Copying Time Machine Disk - one more permission problem

[gilby101]

Can BackupLoupe be used with backups made with CCC?

No. But I have asked that question of both CCC and BackupLoupe. Informative answer from Mike 1) how he sees the issue of managing size of backups and 2) saying that searching across multiple snapshots is one of his longer term goals (I hope I have interpreted that correctly). No response yet from BackupLoupe.

 

[toke lahti]

No. But I have asked that question of both CCC and BackupLoupe. Informative answer from Mike 1) how he sees the issue of managing size of backups and 2) saying that searching across multiple snapshots is one of his longer term goals (I hope I have interpreted that correctly). No response yet from BackupLoupe.

I'm curious because I have understood that both Tm and CCC relies on snapshots of APSF.
So there is some differences...?

Does BackupLoupe work similarly with hfs+-backups?
I didn't succeed in copying my old TM disk to a new one with Finder. Maybe because one of the many, many, many backups is corrupted. Might of course be the whole FS.
Can BackupLoupe copy TM-backups?

 

[gilby101]

Does BackupLoupe work similarly with hfs+-backups?
Can BackupLoupe copy TM-backups?

Yes and no. It has always been something to inspect TM backups.

 

[toke lahti]

Yes and no. It has always been something to inspect TM backups.

So the snapshots of TM and CCC are different, because BackupLoupe can insepct one but not the other?
How different they are?

 

[toke lahti]

I might have some corrupted backups in my TM drive.
And my TM does not always succeed to make a backup maybe because of this.
Anyway the drive is full, so I bought a double sized disk (8TB->16TB).

For my past experience, when I notice something is missing, it is usually acidentally deleted months ago.
So, I want to keep the old backups, but I also want to format the old drive to clear it's corruption and use it to something else.
I also want to use the new TM disk with older macs, so this means that both old and new disk are HFS+.
I guess that this should also speed up the copying since TM with APFS disk is a whole different beast than with HFS+.

For the discussions I've googled, I understood that Finder is the only way to do that.
First it takes about 30 hours for Finder to Find Out how many items it needs to copy (over 25M).
Then it starts to copy and hilariously tells that this will take about 30 days. Fun.
It is of course a bit faster but after about one day it had copied about 2.7TB of 7.8TB and tells me:
View attachment 2011556
Anybody have experience with this?

Monterey changes TM disk to "read only" for the (super)user and now it can't even read it by itself.
Even after I have removed it from Time Machine Preferences to be used as a TM disk.
Ie. TM seems to not change the settings back, when the disk is removed from it's duties as a TM disk.

What next?

Seems like Monterey's TM is really flawed with hfs+ TM-disks.
Now it says, that it can't make a backup to my other old backup disk.

The reason for this error is simple: it is an error.

2022-09-18 17:53:03.116648+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Starting manual backup
2022-09-18 17:53:03.158811+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Mountpoint '/Volumes/aikaKone2token' is still valid
2022-09-18 17:53:03.208676+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Mountpoint '/Volumes/aikaKone2token' is still valid
2022-09-18 17:53:04.108501+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Checking identity of target volume '/Volumes/aikaKone2token'
2022-09-18 17:53:04.122164+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Mountpoint '/Volumes/aikaKone2token' is still valid
2022-09-18 17:53:04.208006+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Mountpoint '/Volumes/aikaKone2token' is still valid
2022-09-18 17:53:04.208553+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Backing up 2 volumes to aikaKone2token (/dev/disk7s2,1e): /Volumes/aikaKone2token
2022-09-18 17:53:04.211305+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:IOCheck] Checking destination IO performance at "/Volumes/aikaKone2token"
2022-09-18 17:53:07.073985+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:IOCheck] Failed destination write test with error Error Domain=NSPOSIXErrorDomain Code=60 "Operation timed out". Wrote 8 KB in 1 file.
2022-09-18 17:53:07.172389+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:Inheritance] Found matching machine store '/Volumes/aikaKone2token/Backups.backupdb/Toke’sMini2018' for computer named 'Toke’sMini2018', no machine store inheritance needed
2022-09-18 17:53:43.665185+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Mountpoint '/Volumes/aikaKone2token' is still valid
2022-09-18 17:53:44.175671+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Starting age based thinning of Time Machine local snapshots on disk '/Volumes/Macintosh HD - Data'
2022-09-18 17:53:44.175681+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Starting age based thinning of Time Machine local snapshots on disk '/System/Volumes/Data'
2022-09-18 17:53:44.175705+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Starting age based thinning of Time Machine local snapshots on disk '/Volumes/HDDhomeDir'
2022-09-18 17:53:44.175729+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Starting age based thinning of Time Machine local snapshots on disk '/Volumes/Macintosh HD'
2022-09-18 17:53:44.179228+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Skipping age based thinning of Time Machine reference snapshot 'com.apple.TimeMachine.2022-06-21-213819.local' on disk '/Volumes/Macintosh HD - Data'
2022-09-18 17:53:44.223889+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Skipping age based thinning of Time Machine reference snapshot 'com.apple.TimeMachine.2022-06-21-213819.local' on disk '/Volumes/HDDhomeDir'
2022-09-18 17:53:44.224000+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Skipping age based thinning of Time Machine reference snapshot 'com.apple.TimeMachine.2022-08-15-010018.local' on disk '/Volumes/HDDhomeDir'
2022-09-18 17:53:44.224090+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Skipping age based thinning of Time Machine reference snapshot 'com.apple.TimeMachine.2022-06-21-213819.local' on disk '/System/Volumes/Data'
2022-09-18 17:53:44.224120+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Skipping age based thinning of Time Machine reference snapshot 'com.apple.TimeMachine.2022-08-15-010018.local' on disk '/System/Volumes/Data'
2022-09-18 17:53:44.226682+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Age-based thinning deleted Time Machine snapshot 'com.apple.TimeMachine.2022-09-17-173352.local' on disk '/Volumes/HDDhomeDir
2022-09-18 17:53:44.265496+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Age-based thinning deleted Time Machine snapshot 'com.apple.TimeMachine.2022-09-17-173352.local' on disk '/System/Volumes/Data
2022-09-18 17:54:15.017398+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalSnapshotManagement] File coordination timed out after 30 seconds while preparing for reading '/System/Volumes/Data'
2022-09-18 17:54:15.715414+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Failed to prepare spotlight indexing for '/System/Volumes/Data' (elapsed time: 30.10 seconds)
2022-09-18 17:54:19.723060+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalSnapshotManagement] Created Time Machine local snapshot with name 'com.apple.TimeMachine.2022-09-18-175415.local' on disk '/Volumes/HDDhomeDir'
2022-09-18 17:54:19.979099+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalSnapshotManagement] Created Time Machine local snapshot with name 'com.apple.TimeMachine.2022-09-18-175415.local' on disk '/System/Volumes/Data'
2022-09-18 17:54:20.019389+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Declared stable snapshot: com.apple.TimeMachine.2022-09-18-175415.local
2022-09-18 17:54:20.168080+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalSnapshotManagement] Mounted stable snapshot: com.apple.TimeMachine.2022-09-18-175415.local at path: /Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-09-18-175415/macOS 12 - Data source: macOS 12 - Data
2022-09-18 17:54:20.179251+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalSnapshotManagement] Mounted stable snapshot: com.apple.TimeMachine.2022-09-18-175415.local at path: /Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-09-18-175415/HDDhomeDir source: HDDhomeDir
2022-09-18 17:54:20.268512+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalSnapshotManagement] Mounted reference snapshot: com.apple.TimeMachine.2022-08-15-010018.local at path: /Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-08-15-010018/macOS 12 - Data source: macOS 12 - Data
2022-09-18 17:54:20.315338+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalSnapshotManagement] Mounted reference snapshot: com.apple.TimeMachine.2022-08-15-010018.local at path: /Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-08-15-010018/HDDhomeDir source: HDDhomeDir
2022-09-18 17:54:21.228755+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Failed to get inode change date for '(null)'!
2022-09-18 17:54:22.067047+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:Inheritance] Found existing volume store '/Volumes/aikaKone2token/Backups.backupdb/Toke’sMini2018/2022-08-15-010314/macOS 12 - Data' for disk '/System/Volumes/Data'
2022-09-18 17:54:22.080726+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Collecting events on 2 volumes...
2022-09-18 17:54:22.420547+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Got new file ID based proportions for 2 devices
2022-09-18 17:54:22.816773+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Event store UUIDs don't match for volume: HDDhomeDir (saved: 4BE8E938-E025-4F25-956E-EC4403F4AF6D current: 92CFA62E-351E-46A0-94AD-F15DFD4ADD73)
2022-09-18 17:54:22.819074+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Event store UUIDs don't match for volume: macOS 12 - Data (saved: 9053CBFC-B1F5-423F-A7E2-AA7AA4CB5299 current: A7444C0F-4931-4209-9908-2D6D65A0C9FA)
2022-09-18 17:54:22.820464+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Using APFS snapshot diffing for source: "HDDhomeDir" (device: /dev/disk6s1 mount: '/Volumes/HDDhomeDir' fsUUID: DE4B9586-ED5A-48FB-B94A-669A77C8FB0D eventDBUUID: 92CFA62E-351E-46A0-94AD-F15DFD4ADD73) snapshotDiffing(liveVolumeMountPoint: file:///Volumes/HDDhomeDir/, earlierXID: 998536, laterXID: 1069365, startDate: 2022-08-14 22:02:03 +0000, previousCloneCacheURL: Optional(file:///Volumes/aikaKone2token/Backups.backupdb/Toke%E2%80%99sMini2018/2022-08-15-010314/.DE4B9586-ED5A-48FB-B94A-669A77C8FB0D.clonedb))
2022-09-18 17:54:22.823583+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Using APFS snapshot diffing for source: "macOS 12 - Data" (device: /dev/disk3s1 mount: '/System/Volumes/Data' fsUUID: 2F8943D7-CFD9-359F-AEF0-5705F2140577 eventDBUUID: A7444C0F-4931-4209-9908-2D6D65A0C9FA) snapshotDiffing(liveVolumeMountPoint: file:///System/Volumes/Data/, earlierXID: 5593634, laterXID: 6552884, startDate: 2022-08-14 22:01:50 +0000, previousCloneCacheURL: Optional(file:///Volumes/aikaKone2token/Backups.backupdb/Toke%E2%80%99sMini2018/2022-08-15-010314/.2F8943D7-CFD9-359F-AEF0-5705F2140577.clonedb))
2022-09-18 17:54:22.864700+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:CloneCollection] Read 22 clone families from /Volumes/aikaKone2token/Backups.backupdb/Toke’sMini2018/2022-08-15-010314/.2F8943D7-CFD9-359F-AEF0-5705F2140577.clonedb
2022-09-18 17:54:22.864780+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:CloneCollection] Read 221 clone families from /Volumes/aikaKone2token/Backups.backupdb/Toke’sMini2018/2022-08-15-010314/.DE4B9586-ED5A-48FB-B94A-669A77C8FB0D.clonedb
2022-09-18 17:54:22.974598+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Resolving events for "/System/Volumes/Data" concurrently
2022-09-18 17:54:23.218203+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Resolving events for "/Volumes/HDDhomeDir" concurrently
2022-09-18 17:54:23.226063+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:TMSnapshotDiffer] Diffing from 998536 to 1069365 for /Volumes/HDDhomeDir
2022-09-18 17:54:23.614619+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:TMSnapshotDiffer] Diffing from 5593634 to 6552884 for /System/Volumes/Data
2022-09-18 17:54:32.665982+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollectionProgress] 5001 (-):
    - - "HDDhomeDir" 2 % : CountedEvents:-,0,0/0,FileIDDistribution:-,0,FileIDCount:-,0
    - - "macOS 12 - Data" 98 % : CountedEvents:-,0,0/0,FileIDDistribution:-,0,FileIDCount:-,0
        Speed: 949.82 events/s Average: 783.38 events/s
        Current: "Users/ext-toke/Library/Application Support/MobileSync/Backup/00008101-001C25390E88001E/9c"
2022-09-18 17:54:37.117900+0300  localhost backupd-helper[394]: (TimeMachine) [com.apple.TimeMachine:General] Failed to determine if '/Volumes/tokenTMhfs+8TB' is a recovery volume, error: Disk object invalid or unable to serialize
2022-09-18 17:56:15.064886+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Failed to enumerate snapshot diffs, error: Error Domain=NSPOSIXErrorDomain Code=92 "Illegal byte sequence"
2022-09-18 17:56:15.067281+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Failed to collect events for "HDDhomeDir" (device: /dev/disk6s1 mount: '/Volumes/HDDhomeDir' fsUUID: DE4B9586-ED5A-48FB-B94A-669A77C8FB0D eventDBUUID: 92CFA62E-351E-46A0-94AD-F15DFD4ADD73), strategy: snapshotDiffing(liveVolumeMountPoint: file:///Volumes/HDDhomeDir/, earlierXID: 998536, laterXID: 1069365, startDate: 2022-08-14 22:02:03 +0000, previousCloneCacheURL: Optional(file:///Volumes/aikaKone2token/Backups.backupdb/Toke%E2%80%99sMini2018/2022-08-15-010314/.DE4B9586-ED5A-48FB-B94A-669A77C8FB0D.clonedb)) , error: Error Domain=com.apple.backupd.ErrorDomain Code=304 "(null)"
2022-09-18 17:56:32.668110+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollectionProgress] 528371 (-):
    - - "HDDhomeDir" 2 % : CountedEvents:-,0,0/0,FileIDDistribution:-,0,FileIDCount:-,0
    - - "macOS 12 - Data" 98 % : CountedEvents:-,0,0/0,FileIDDistribution:-,0,FileIDCount:-,0
        Speed: 16596.93 events/s Average: 8302.97 events/s
        Current: "System/Library/AssetsV2/com_apple_MobileAsset_phoneNumberResolver/0d6249400f983be7e0c305a481eb01dd0453f38f.asset"
2022-09-18 17:58:31.680057+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Failed to collect events for "macOS 12 - Data" (device: /dev/disk3s1 mount: '/System/Volumes/Data' fsUUID: 2F8943D7-CFD9-359F-AEF0-5705F2140577 eventDBUUID: A7444C0F-4931-4209-9908-2D6D65A0C9FA), strategy: snapshotDiffing(liveVolumeMountPoint: file:///System/Volumes/Data/, earlierXID: 5593634, laterXID: 6552884, startDate: 2022-08-14 22:01:50 +0000, previousCloneCacheURL: Optional(file:///Volumes/aikaKone2token/Backups.backupdb/Toke%E2%80%99sMini2018/2022-08-15-010314/.2F8943D7-CFD9-359F-AEF0-5705F2140577.clonedb)) , error: Error Domain=com.apple.backupd.ErrorDomain Code=22 "(null)"
2022-09-18 17:58:32.472836+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Unmounted '/Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-09-18-175415/macOS 12 - Data'
2022-09-18 17:58:32.476072+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Unmounted local snapshot: com.apple.TimeMachine.2022-09-18-175415.local at path: /Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-09-18-175415/macOS 12 - Data source: macOS 12 - Data
2022-09-18 17:58:32.618163+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Unmounted '/Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-09-18-175415/HDDhomeDir'
2022-09-18 17:58:32.619819+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Unmounted local snapshot: com.apple.TimeMachine.2022-09-18-175415.local at path: /Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-09-18-175415/HDDhomeDir source: HDDhomeDir
2022-09-18 17:58:32.765770+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Unmounted '/Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-08-15-010018/macOS 12 - Data'
2022-09-18 17:58:32.769043+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Unmounted local snapshot: com.apple.TimeMachine.2022-08-15-010018.local at path: /Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-08-15-010018/macOS 12 - Data source: macOS 12 - Data
2022-09-18 17:58:33.014707+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Unmounted '/Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-08-15-010018/HDDhomeDir'
2022-09-18 17:58:33.023347+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Unmounted local snapshot: com.apple.TimeMachine.2022-08-15-010018.local at path: /Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-08-15-010018/HDDhomeDir source: HDDhomeDir
2022-09-18 17:58:33.375545+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Mountpoint '/Volumes/aikaKone2token' is still valid
2022-09-18 17:58:33.921835+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Mountpoint '/System/Volumes/Data' is still valid
2022-09-18 17:58:33.924142+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Mountpoint '/Volumes/HDDhomeDir' is still valid
2022-09-18 17:58:33.928215+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Backup failed (304: BACKUP_FAILED_PREFLIGHT_STAGE_SNAPSHOT_DIFFING)
2022-09-18 18:11:58.872743+0300  localhost backupd-helper[394]: (TimeMachine) [com.apple.TimeMachine:PowerManagement] TMPowerState: 2
2022-09-18 18:11:59.023551+0300  localhost backupd-helper[394]: (TimeMachine) [com.apple.TimeMachine:General] Skipping scheduled Time Machine backup: Automatic backups disabled
2022-09-18 18:11:59.126892+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Starting age based thinning of Time Machine local snapshots on disk '/System/Volumes/Data'
2022-09-18 18:11:59.126913+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Starting age based thinning of Time Machine local snapshots on disk '/Volumes/Macintosh HD - Data'
2022-09-18 18:11:59.126932+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Starting age based thinning of Time Machine local snapshots on disk '/Volumes/HDDhomeDir'
2022-09-18 18:11:59.126949+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Starting age based thinning of Time Machine local snapshots on disk '/Volumes/Macintosh HD'
2022-09-18 18:12:00.730148+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Skipping age based thinning of Time Machine reference snapshot 'com.apple.TimeMachine.2022-06-21-213819.local' on disk '/Volumes/Macintosh HD - Data'
2022-09-18 18:12:00.731943+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Skipping age based thinning of Time Machine reference snapshot 'com.apple.TimeMachine.2022-06-21-213819.local' on disk '/System/Volumes/Data'
2022-09-18 18:12:00.731964+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Skipping age based thinning of Time Machine reference snapshot 'com.apple.TimeMachine.2022-06-21-213819.local' on disk '/Volumes/HDDhomeDir'
2022-09-18 18:12:00.731970+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Skipping age based thinning of Time Machine reference snapshot 'com.apple.TimeMachine.2022-08-15-010018.local' on disk '/System/Volumes/Data'
2022-09-18 18:12:00.731983+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Skipping age based thinning of Time Machine reference snapshot 'com.apple.TimeMachine.2022-08-15-010018.local' on disk '/Volumes/HDDhomeDir'
2022-09-18 18:12:01.927575+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Failed to wait for snapshot deletion to complete on disk '/Volumes/Macintosh HD', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
2022-09-18 18:16:34.970207+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Starting manual backup
2022-09-18 18:16:38.819421+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Mountpoint '/Volumes/aikaKone2token' is still valid
2022-09-18 18:16:39.073776+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Mountpoint '/Volumes/aikaKone2token' is still valid
2022-09-18 18:16:40.676303+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Checking identity of target volume '/Volumes/aikaKone2token'
2022-09-18 18:16:40.919741+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Mountpoint '/Volumes/aikaKone2token' is still valid
2022-09-18 18:16:41.135592+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Mountpoint '/Volumes/aikaKone2token' is still valid
2022-09-18 18:16:41.169581+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Backing up 2 volumes to aikaKone2token (/dev/disk7s2,1e): /Volumes/aikaKone2token
2022-09-18 18:16:41.171747+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:IOCheck] Checking destination IO performance at "/Volumes/aikaKone2token"
2022-09-18 18:16:43.570195+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:Inheritance] Found matching machine store '/Volumes/aikaKone2token/Backups.backupdb/Toke’sMini2018' for computer named 'Toke’sMini2018', no machine store inheritance needed
2022-09-18 18:16:57.733530+0300  localhost lsd[204]: (TimeMachine) [com.apple.TimeMachine:General] Failed to enumerate URLs under /private/var/folders/qc/yyk4wjlx23509_slfl9t915r0000gq/T/AppTranslocation/4B16A456-4FB7-4F6E-B5A4-E53152D12991 for SnapshotStorage reuse with error Error Domain=NSCocoaErrorDomain Code=256 "The file “4B16A456-4FB7-4F6E-B5A4-E53152D12991” couldn’t be opened." UserInfo={NSURL=file:///private/var/folders/qc/yyk4wjlx23509_slfl9t915r0000gq/T/AppTranslocation/4B16A456-4FB7-4F6E-B5A4-E53152D12991, NSFilePath=/private/var/folders/qc/yyk4wjlx23509_slfl9t915r0000gq/T/AppTranslocation/4B16A456-4FB7-4F6E-B5A4-E53152D12991, NSUnderlyingError=0x7fc80950e4c0 {Error Domain=NSPOSIXErrorDomain Code=34 "Result too large"}}
2022-09-18 18:17:01.449807+0300  localhost lsd[549]: (TimeMachine) [com.apple.TimeMachine:General] Failed to enumerate URLs under /private/var/folders/qc/yyk4wjlx23509_slfl9t915r0000gq/T/AppTranslocation/4B16A456-4FB7-4F6E-B5A4-E53152D12991 for SnapshotStorage reuse with error Error Domain=NSCocoaErrorDomain Code=256 "The file “4B16A456-4FB7-4F6E-B5A4-E53152D12991” couldn’t be opened." UserInfo={NSURL=file:///private/var/folders/qc/yyk4wjlx23509_slfl9t915r0000gq/T/AppTranslocation/4B16A456-4FB7-4F6E-B5A4-E53152D12991, NSFilePath=/private/var/folders/qc/yyk4wjlx23509_slfl9t915r0000gq/T/AppTranslocation/4B16A456-4FB7-4F6E-B5A4-E53152D12991, NSUnderlyingError=0x7ff629b2e7b0 {Error Domain=NSPOSIXErrorDomain Code=34 "Result too large"}}
2022-09-18 18:17:55.776317+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Mountpoint '/Volumes/aikaKone2token' is still valid
2022-09-18 18:17:57.822173+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Starting age based thinning of Time Machine local snapshots on disk '/Volumes/HDDhomeDir'
2022-09-18 18:17:57.822251+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Starting age based thinning of Time Machine local snapshots on disk '/System/Volumes/Data'
2022-09-18 18:17:57.822311+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Starting age based thinning of Time Machine local snapshots on disk '/Volumes/Macintosh HD - Data'
2022-09-18 18:17:57.822380+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Starting age based thinning of Time Machine local snapshots on disk '/Volumes/Macintosh HD'
2022-09-18 18:17:57.826390+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Skipping age based thinning of Time Machine reference snapshot 'com.apple.TimeMachine.2022-06-21-213819.local' on disk '/Volumes/Macintosh HD - Data'
2022-09-18 18:17:57.832521+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Skipping age based thinning of Time Machine reference snapshot 'com.apple.TimeMachine.2022-06-21-213819.local' on disk '/Volumes/HDDhomeDir'
2022-09-18 18:17:57.832651+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Skipping age based thinning of Time Machine reference snapshot 'com.apple.TimeMachine.2022-08-15-010018.local' on disk '/Volumes/HDDhomeDir'
2022-09-18 18:17:57.832719+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Skipping age based thinning of Time Machine reference snapshot 'com.apple.TimeMachine.2022-06-21-213819.local' on disk '/System/Volumes/Data'
2022-09-18 18:17:57.832775+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalThinning] Skipping age based thinning of Time Machine reference snapshot 'com.apple.TimeMachine.2022-08-15-010018.local' on disk '/System/Volumes/Data'
2022-09-18 18:18:06.870166+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalSnapshotManagement] Created Time Machine local snapshot with name 'com.apple.TimeMachine.2022-09-18-181806.local' on disk '/Volumes/HDDhomeDir'
2022-09-18 18:18:08.669518+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalSnapshotManagement] Created Time Machine local snapshot with name 'com.apple.TimeMachine.2022-09-18-181806.local' on disk '/System/Volumes/Data'
2022-09-18 18:18:08.672101+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Declared stable snapshot: com.apple.TimeMachine.2022-09-18-181806.local
2022-09-18 18:18:08.819358+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalSnapshotManagement] Mounted stable snapshot: com.apple.TimeMachine.2022-09-18-181806.local at path: /Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-09-18-181806/macOS 12 - Data source: macOS 12 - Data
2022-09-18 18:18:08.825400+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalSnapshotManagement] Mounted stable snapshot: com.apple.TimeMachine.2022-09-18-181806.local at path: /Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-09-18-181806/HDDhomeDir source: HDDhomeDir
2022-09-18 18:18:08.870951+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalSnapshotManagement] Mounted reference snapshot: com.apple.TimeMachine.2022-08-15-010018.local at path: /Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-08-15-010018/macOS 12 - Data source: macOS 12 - Data
2022-09-18 18:18:08.875523+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:LocalSnapshotManagement] Mounted reference snapshot: com.apple.TimeMachine.2022-08-15-010018.local at path: /Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-08-15-010018/HDDhomeDir source: HDDhomeDir
2022-09-18 18:18:13.524636+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Failed to get inode change date for '(null)'!
2022-09-18 18:18:13.524664+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Failed to get inode change date for '(null)'!
2022-09-18 18:18:16.875533+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:Inheritance] Found existing volume store '/Volumes/aikaKone2token/Backups.backupdb/Toke’sMini2018/2022-08-15-010314/macOS 12 - Data' for disk '/System/Volumes/Data'
2022-09-18 18:18:18.869540+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Collecting events on 2 volumes...
2022-09-18 18:18:22.274139+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Got new file ID based proportions for 2 devices
2022-09-18 18:18:24.123830+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Event store UUIDs don't match for volume: HDDhomeDir (saved: 4BE8E938-E025-4F25-956E-EC4403F4AF6D current: 92CFA62E-351E-46A0-94AD-F15DFD4ADD73)
2022-09-18 18:18:24.126781+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Using APFS snapshot diffing for source: "HDDhomeDir" (device: /dev/disk6s1 mount: '/Volumes/HDDhomeDir' fsUUID: DE4B9586-ED5A-48FB-B94A-669A77C8FB0D eventDBUUID: 92CFA62E-351E-46A0-94AD-F15DFD4ADD73) snapshotDiffing(liveVolumeMountPoint: file:///Volumes/HDDhomeDir/, earlierXID: 998536, laterXID: 1069428, startDate: 2022-08-14 22:02:03 +0000, previousCloneCacheURL: Optional(file:///Volumes/aikaKone2token/Backups.backupdb/Toke%E2%80%99sMini2018/2022-08-15-010314/.DE4B9586-ED5A-48FB-B94A-669A77C8FB0D.clonedb))
2022-09-18 18:18:25.772590+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Event store UUIDs don't match for volume: macOS 12 - Data (saved: 9053CBFC-B1F5-423F-A7E2-AA7AA4CB5299 current: A7444C0F-4931-4209-9908-2D6D65A0C9FA)
2022-09-18 18:18:25.774356+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Using APFS snapshot diffing for source: "macOS 12 - Data" (device: /dev/disk3s1 mount: '/System/Volumes/Data' fsUUID: 2F8943D7-CFD9-359F-AEF0-5705F2140577 eventDBUUID: A7444C0F-4931-4209-9908-2D6D65A0C9FA) snapshotDiffing(liveVolumeMountPoint: file:///System/Volumes/Data/, earlierXID: 5593634, laterXID: 6553790, startDate: 2022-08-14 22:01:50 +0000, previousCloneCacheURL: Optional(file:///Volumes/aikaKone2token/Backups.backupdb/Toke%E2%80%99sMini2018/2022-08-15-010314/.2F8943D7-CFD9-359F-AEF0-5705F2140577.clonedb))
2022-09-18 18:18:26.177704+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:CloneCollection] Read 22 clone families from /Volumes/aikaKone2token/Backups.backupdb/Toke’sMini2018/2022-08-15-010314/.2F8943D7-CFD9-359F-AEF0-5705F2140577.clonedb
2022-09-18 18:18:27.832266+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:CloneCollection] Read 221 clone families from /Volumes/aikaKone2token/Backups.backupdb/Toke’sMini2018/2022-08-15-010314/.DE4B9586-ED5A-48FB-B94A-669A77C8FB0D.clonedb
2022-09-18 18:18:27.871307+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Resolving events for "/Volumes/HDDhomeDir" concurrently
2022-09-18 18:18:28.028955+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Resolving events for "/System/Volumes/Data" concurrently
2022-09-18 18:18:28.029062+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:TMSnapshotDiffer] Diffing from 5593634 to 6553790 for /System/Volumes/Data
2022-09-18 18:18:29.620236+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:TMSnapshotDiffer] Diffing from 998536 to 1069428 for /Volumes/HDDhomeDir
2022-09-18 18:18:31.471307+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollectionProgress] 1 (-):
    - - "macOS 12 - Data" 98 % : CountedEvents:-,0,0/0,FileIDDistribution:-,0,FileIDCount:-,0
    - - "HDDhomeDir" 2 % : CountedEvents:-,0,0/0,FileIDDistribution:-,0,FileIDCount:-,0
        Speed: - events/s Average: 0.00 events/s
        Current: "-"
2022-09-18 18:19:59.519404+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Failed to enumerate snapshot diffs, error: Error Domain=NSPOSIXErrorDomain Code=92 "Illegal byte sequence"
2022-09-18 18:19:59.520832+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Failed to collect events for "HDDhomeDir" (device: /dev/disk6s1 mount: '/Volumes/HDDhomeDir' fsUUID: DE4B9586-ED5A-48FB-B94A-669A77C8FB0D eventDBUUID: 92CFA62E-351E-46A0-94AD-F15DFD4ADD73), strategy: snapshotDiffing(liveVolumeMountPoint: file:///Volumes/HDDhomeDir/, earlierXID: 998536, laterXID: 1069428, startDate: 2022-08-14 22:02:03 +0000, previousCloneCacheURL: Optional(file:///Volumes/aikaKone2token/Backups.backupdb/Toke%E2%80%99sMini2018/2022-08-15-010314/.DE4B9586-ED5A-48FB-B94A-669A77C8FB0D.clonedb)) , error: Error Domain=com.apple.backupd.ErrorDomain Code=304 "(null)"
2022-09-18 18:20:31.473769+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollectionProgress] 531826 (-):
    - - "macOS 12 - Data" 98 % : CountedEvents:-,0,0/0,FileIDDistribution:-,0,FileIDCount:-,0
    - - "HDDhomeDir" 2 % : CountedEvents:-,0,0/0,FileIDDistribution:-,0,FileIDCount:-,0
        Speed: 19593.75 events/s Average: 9436.85 events/s
        Current: "Users/ext-toke/Library/Application Support/Google/Chrome/Default/Service Worker/ScriptCache/6f190baf73a73318_1"
2022-09-18 18:22:19.572340+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:EventCollection] Failed to collect events for "macOS 12 - Data" (device: /dev/disk3s1 mount: '/System/Volumes/Data' fsUUID: 2F8943D7-CFD9-359F-AEF0-5705F2140577 eventDBUUID: A7444C0F-4931-4209-9908-2D6D65A0C9FA), strategy: snapshotDiffing(liveVolumeMountPoint: file:///System/Volumes/Data/, earlierXID: 5593634, laterXID: 6553790, startDate: 2022-08-14 22:01:50 +0000, previousCloneCacheURL: Optional(file:///Volumes/aikaKone2token/Backups.backupdb/Toke%E2%80%99sMini2018/2022-08-15-010314/.2F8943D7-CFD9-359F-AEF0-5705F2140577.clonedb)) , error: Error Domain=com.apple.backupd.ErrorDomain Code=22 "(null)"
2022-09-18 18:22:20.170606+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Unmounted '/Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-09-18-181806/macOS 12 - Data'
2022-09-18 18:22:20.171764+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Unmounted local snapshot: com.apple.TimeMachine.2022-09-18-181806.local at path: /Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-09-18-181806/macOS 12 - Data source: macOS 12 - Data
2022-09-18 18:22:20.620861+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Unmounted '/Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-09-18-181806/HDDhomeDir'
2022-09-18 18:22:20.622090+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Unmounted local snapshot: com.apple.TimeMachine.2022-09-18-181806.local at path: /Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-09-18-181806/HDDhomeDir source: HDDhomeDir
2022-09-18 18:22:20.869324+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Unmounted '/Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-08-15-010018/macOS 12 - Data'
2022-09-18 18:22:20.870539+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Unmounted local snapshot: com.apple.TimeMachine.2022-08-15-010018.local at path: /Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-08-15-010018/macOS 12 - Data source: macOS 12 - Data
2022-09-18 18:22:21.119340+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Unmounted '/Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-08-15-010018/HDDhomeDir'
2022-09-18 18:22:21.120945+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Unmounted local snapshot: com.apple.TimeMachine.2022-08-15-010018.local at path: /Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/Toke’sMini2018/2022-08-15-010018/HDDhomeDir source: HDDhomeDir
2022-09-18 18:23:35.923883+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Mountpoint '/Volumes/aikaKone2token' is still valid
2022-09-18 18:23:37.200030+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Mountpoint '/System/Volumes/Data' is still valid
2022-09-18 18:23:37.221441+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Mountpoint '/Volumes/HDDhomeDir' is still valid
2022-09-18 18:23:37.223518+0300  localhost backupd[254]: (TimeMachine) [com.apple.TimeMachine:General] Backup failed (304: BACKUP_FAILED_PREFLIGHT_STAGE_SNAPSHOT_DIFFING)

 

[toke lahti]

Interesting parts in that log might be:

[com.apple.TimeMachine:General] Failed to get inode change date for '(null)'!

and

[com.apple.TimeMachine:EventCollection] Event store UUIDs don't match for volume: HDDhomeDir (saved: 4BE8E938-E025-4F25-956E-EC4403F4AF6D current: 92CFA62E-351E-46A0-94AD-F15DFD4ADD73)

and

[com.apple.TimeMachine:EventCollection] Event store UUIDs don't match for volume: macOS 12 - Data (saved: 9053CBFC-B1F5-423F-A7E2-AA7AA4CB5299 current: A7444C0F-4931-4209-9908-2D6D65A0C9FA)

?

 

[ThrowerGB]

I've used TM since it first came out. I can't recall ever having a serious problem. If I did, it was fixed with Disk Utility or some such thing. I have several suggestions.

• My TM disks are 8 GB WD hard disks connected via USB. I have a dual disk setup, an A and a B so if one fails, I have the other right there.
• Both disks are formatted as Mac OS Extended (Journaled) and as a single partition on each disk. No point in trying to format a hard disk as APFS. APFS is designed for SSDs. I've never tried to create more than one partition for TM with different TMs all being written to a separate partition on the single disk.
• Presuming you've got a working 4GB drive: To copy a good TM drive to another so that on the second drive, new backup is added to the old files. For example your TM drive is 4GB and you want to replace it with a new 8GB drive, and have the new backups contiguous with the old ones. Use Disk Utility to make an image of the 4GB drive.
  • It will go a bit faster if you build the disk image on a different drive. It goes faster because the R/W heads on the 4GB hard drive won't have to do duty of both reading the TM files at the same time as writing out the image file on the same disk. And who knows, but perhaps macOS reads some data off the 4GB and pulls it over the USB connection to memory on the computer, where it might or might not get written to the main system disk virtual storage, then gets pulled off the system virtual storage, converted to a segment of an image file, which itself may get written to virtual storage, which is then sent back out over the USB link and written to the image file on the 4GB drive. Lots of reading and writing, particularly on the 4GB hard drive and if the system drive is a hard disk, it will be thrashing about too. An then there's two way contention over the USB link as well as the main system bus.
  • It will also avoid the problem of not enough free space on the 4GB drive for the image file to fit on it, and it will error out.
• Never let a disk get more than about 75-80% full. Yes this is an old rule of thumb, it used to be about 65%. As a disk fills, there's less and less space to write new files and after a while the drive is looking for lots of bits of free space and that slows things down a lot.
• Now to copy to the new 8GB disk, first format it as Mac OS Extended (Journaled).
• Leave the image of the 4GB where you created it. Don't copy it to the 8GB drive to avoid having the R/W heads trash about as mentioned above.
• Then expand the image of the 4GB drive with the output going onto the new 8GB drive.

Hope you find this useful.

 

[HDFan]

Both disks are formatted as Mac OS Extended (Journaled) and as a single partition on each disk. No point in trying to format a hard disk as APFS.

Is that true? When I had to rebuild HFS TM disks from scratch HDs were reformatted as APFS on Monterey. There was no choice.

 

[gilby101]

Is that true?

No. Apart from other benefits of APFS, Time Machine to APFS is much more robust than old TM to HFS+. TM to HFS+ was always fragile due to hard linked directories.

There are all sorts of reasons espoused to not use APFS, but I find APFS on HDD has advantages over HFS+ which outweigh the supposed performance penalty.

 

[ThrowerGB]

Is that true? When I had to rebuild HFS TM disks from scratch HDs were reformatted as APFS on Monterey. There was no choice.

Well, I've never been forced into APFS by setting up TM. When I moved from a single 4TB drive for TM to dual 8TB hard drives, I made an image using Disk Utility of the 4TB drive, then formatted the two 8TB drives the same as the previous 4TB ones. Then expanded the image onto each 8TB drive. Then when I pointed TM to dual 8TB drives, it just worked.

 

[toke lahti]

I've used TM since it first came out. I can't recall ever having a serious problem. If I did, it was fixed with Disk Utility or some such thing. I have several suggestions.

• My TM disks are 8 GB WD hard disks connected via USB. I have a dual disk setup, an A and a B so if one fails, I have the other right there.
• Both disks are formatted as Mac OS Extended (Journaled) and as a single partition on each disk. No point in trying to format a hard disk as APFS. APFS is designed for SSDs. I've never tried to create more than one partition for TM with different TMs all being written to a separate partition on the single disk.
• Presuming you've got a working 4GB drive: To copy a good TM drive to another so that on the second drive, new backup is added to the old files. For example your TM drive is 4GB and you want to replace it with a new 8GB drive, and have the new backups contiguous with the old ones. Use Disk Utility to make an image of the 4GB drive.
  • It will go a bit faster if you build the disk image on a different drive. It goes faster because the R/W heads on the 4GB hard drive won't have to do duty of both reading the TM files at the same time as writing out the image file on the same disk. And who knows, but perhaps macOS reads some data off the 4GB and pulls it over the USB connection to memory on the computer, where it might or might not get written to the main system disk virtual storage, then gets pulled off the system virtual storage, converted to a segment of an image file, which itself may get written to virtual storage, which is then sent back out over the USB link and written to the image file on the 4GB drive. Lots of reading and writing, particularly on the 4GB hard drive and if the system drive is a hard disk, it will be thrashing about too. An then there's two way contention over the USB link as well as the main system bus.
  • It will also avoid the problem of not enough free space on the 4GB drive for the image file to fit on it, and it will error out.
• Never let a disk get more than about 75-80% full. Yes this is an old rule of thumb, it used to be about 65%. As a disk fills, there's less and less space to write new files and after a while the drive is looking for lots of bits of free space and that slows things down a lot.
• Now to copy to the new 8GB disk, first format it as Mac OS Extended (Journaled).
• Leave the image of the 4GB where you created it. Don't copy it to the 8GB drive to avoid having the R/W heads trash about as mentioned above.
• Then expand the image of the 4GB drive with the output going onto the new 8GB drive.

Hope you find this useful.

Well, I also have used TM since it came out.
TM was the reason I switched to Macs.
I really relied to TM just when I stopped using cMP, which had raid1 and cloning, and moved to using mini due to heat and electricity bill.
Now I have 2 corrupted hfs+ TM disks, that can't be copied with Apple's official methods.
(My 3rd one failed few years ago...)

I'll try that image technique very soon. My prediction is that it doesn't help when FS is corrupted, but you never know...

 

[HDFan]

I made an image using Disk Utility of the 4TB drive, then formatted the two 8TB drives the same as the previous 4TB ones. Then expanded the image onto each 8TB drive.

Sure. But if you build it from scratch, i.e. start TM on an erased disk without populating it will be formatted as APFS.

 

[toke lahti]

Quite amazing!

I fired up my old TM drives to test the "image method".
Somehow, for unknown reason, my oldest (in use) TM disk started working!

I'm using 12.5.1.

I guess there's no public list of TM versions and their updates?
What is the underlying process called?

sysinfo tells:
Apps:

Time Machine:

Version: 1.3

Obtained from: Apple

Last Modified: 11.8.22, 9.44

Kind: Universal

Signed by: Software Signing, Apple Code Signing Certification Authority, Apple Root CA

Location: /System/Applications/Time Machine.app

and Frameworks:

Backup:

Version: 2.5

Obtained from: Unknown

Last Modified: 11.8.22, 9.44

Location: /System/Library/PrivateFrameworks/Backup.framework


Private: Yes

Maybe Apple fixed something in August?

 

[toke lahti]

Is that true? When I had to rebuild HFS TM disks from scratch HDs were reformatted as APFS on Monterey. There was no choice.

How do you "rebuild" a TM disk?
You can format a disk to hfs+ with Disk Utility or diskutil and then take it in use in TM.app.
Or does this not work anymore?

 

[gilby101]

You can format a disk to hfs+ with Disk Utility or diskutil and then take it in use in TM.app.

Monterey and Ventura will reformat the partition (APFS) when used to start a new TM backup.

 

[toke lahti]

Quite amazing!

I fired up my old TM drives to test the "image method".
Somehow, for unknown reason, my oldest (in use) TM disk started working!
View attachment 2115628
I'm using 12.5.1.

I guess there's no public list of TM versions and their updates?
What is the underlying process called?

sysinfo tells:
Apps:

Time Machine:

Version: 1.3

Obtained from: Apple

Last Modified: 11.8.22, 9.44

Kind: Universal

Signed by: Software Signing, Apple Code Signing Certification Authority, Apple Root CA

Location: /System/Applications/Time Machine.app

and Frameworks:

Backup:

Version: 2.5

Obtained from: Unknown

Last Modified: 11.8.22, 9.44

Location: /System/Library/PrivateFrameworks/Backup.framework


Private: Yes

Maybe Apple fixed something in August?

Funniest thing is, that to use my newest apfs formatted TM disk, I still have to remove it from TM disks and add it to there to get it working.
Plenty of bugs still available.

 

[HDFan]

How do you "rebuild" a TM disk?
You can format a disk to hfs+ with Disk Utility or diskutil and then take it in use in TM.app.
Or does this not work anymore?

My "rebuild from scratch" meant wiping the disk in Disk Utility. Normally just delete and recreate the partition since a manual deletion of files via the finder on a TM disk could take days.

Monterey and Ventura will reformat the partition (APFS) when used to start a new TM backup.

Yep, even if you wiped and formatted as HFS.

 

[toke lahti]

Yep, even if you wiped and formatted as HFS.

Yep,
I partitioned my new 16TB TM disk to 2 halves: 8TB apfs and 8TB hfs+.
When I started to use the apfs half as a TM backup, the other half was also formatted as apfs.
Now I formatted it again and try to copy my older hpf+ TM disk to that half.
'cause they could have fixed the copying of TM drive at the same time than that "false corruption".

 

[toke lahti]

Btw,
even if "corruption" has disappeared, copying does not still work.
I got the same message than in the message #1.
(20 hours of preparing to copy and 30 hours of copying, 4.46TB of 7.15TB copied.)

I still don't know if there's any reasonable way to fix permissions in Monterey.
People, any ideas?

To try the "make an image" route, I'd need another empty 8TB drive.
This hobby is getting too expensive for me in this economy.

 

[toke lahti]

And not surprisingly TM has stopped working again.
To APFS I can't make a backup even with removing and adding the disk back to TM disks.
Strangely enough, the hfs+ disk managed to do one backup yesterday. Before and after, no backups, because of an error. Reason for that error is error.

Speculations about file systems' robustness is not very relevant, when the software is so buggy that with a little more compex situation, it rarely works.

Moving on...

 

[toke lahti]

I copied one of my mac's backups from "corrupted" drive to a new drive's hfs+-partition (dragging in Finder, which is the only working way with "Backups.backupdb" folder).
The source folder seems to be 464GB and the destination 1307GB.

IT seems that copying only the part of "Backups.backupdb" breaks the incremental way that TM works.
Which is the sole reason not to make dozens of clones, but to use TM.

ps. Managed to do new backups for both hfs+ and apfs. After multiple restarts ande removing and adding the disks to TM preferences.