The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

  • My badges

  • Twitter Updates

  • My Flickr Stream

  • Pages

  • All categories

  • Enter your email address to subscribe to this blog and receive notifications of new posts by email.

    Join 2,352 other followers

Time Machine taking a very long time for “Preparing backup…” and causing Finder to use 100% of one CPU core

Posted by jpluimers on 2021/04/26

Just in case I get Finder at 100% of one CPU core again while Time Machine is performing “Preparing backup…” for > 6 hours, I might take another look at these links:

This did not reveal much interesting back then:

clear; printf '\e[3J' && log show --predicate 'subsystem == "com.apple.TimeMachine"' --info --last 24h | grep -F 'eMac' | grep -Fv 'etat' | awk -F']' '{print substr($0,1,19), $NF}'

I was at Mac OS 10.3 High Sierra back then with 4 TB external backup disks backing up from the internal 1TB PCIe NVMe.

–jeroen

2019-05-03 10:03:18  Starting automatic backup
2019-05-03 10:03:18  Destination 2TBSlimBUP could not be found (url: (null) destinationID: 402658B7-EBD7-495A-ADA7-59C9252BAE0B)
2019-05-03 10:03:19  Backup failed with error 18: The backup disk could not be found.
2019-05-03 10:03:19  Starting automatic backup
2019-05-03 10:03:19  Destination 4TBMyPassportJWP could not be found (url: (null) destinationID: 2126483F-7989-467B-9E38-82C4F4515BBA)
2019-05-03 10:03:19  Backup failed with error 18: The backup disk could not be found.
2019-05-03 10:03:19  Starting automatic backup
2019-05-03 10:03:19  Backing up to /dev/disk5: /Volumes/4TBSeagateExpansionDriveJWP/Backups.backupdb
2019-05-03 10:03:24  Failed to remove attribute 'com.apple.backupd.SnapshotVolumeFSEventStoreUUID' from 'file:///', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
2019-05-03 10:03:24  Failed to remove attribute 'com.apple.backupd.SnapshotVolumeLastFSEventID' from 'file:///', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
2019-05-03 10:03:24  Failed to remove attribute 'com.apple.backupd.SnapshotVolumeUUID' from 'file:///', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
2019-05-03 10:03:24  Failed to remove attribute 'com.apple.backupd.PreviousSnapshotVolumeUUID' from 'file:///', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
2019-05-03 10:03:24  Failed to remove attribute 'com.apple.backupd.PreviousSnapshotVolumeName' from 'file:///', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
2019-05-03 10:03:24  Failed to remove attribute 'com.apple.backupd.VolumeBytesUsed' from 'file:///', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
2019-05-03 10:03:24  Failed to remove attribute 'com.apple.backupd.VolumeIsCaseSensitive' from 'file:///', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
2019-05-03 10:03:24  Failed to remove attribute 'com.apple.backupd.fstypename' from 'file:///', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
2019-05-03 10:03:24  Failed to remove attribute 'com.apple.backupd.VolumeIsEncrypted' from 'file:///', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
2019-05-03 10:03:24  Starting age based thinning of Time Machine local snapshots on disk '/'
2019-05-03 10:03:24  Skipping age based thinning of Time Machine reference snapshot 'com.apple.TimeMachine.2019-04-11-055115' on disk '/'
2019-05-03 10:03:24  Skipping age based thinning of Time Machine reference snapshot 'com.apple.TimeMachine.2019-04-11-070153' on disk '/'
2019-05-03 10:03:24  Age based thinning deleted Time Machine snapshot 'com.apple.TimeMachine.2019-05-02-093335' on disk '/
2019-05-03 10:03:24  Age based thinning deleted Time Machine snapshot 'com.apple.TimeMachine.2019-05-02-172759' on disk '/
2019-05-03 10:04:01  Completed thinning of snapshots on disk '/' in 36.4 seconds - current free space: 99.69 GB (99,693,531,136 bytes), target free space: 25 GB (25,000,000,000 bytes), initial free space: 100.5 GB (100,503,789,568 bytes), urgency: 0, remaining snapshots: (
    "com.apple.Time     "com.apple.TimeMachine.2019-04-11-055115",
    "com.apple.Time     "com.apple.TimeMachine.2019-04-11-070153",
    "com.apple.Time     "com.apple.TimeMachine.2019-05-02-102904",
    "com.apple.Time     "com.apple.TimeMachine.2019-05-02-130954",
    "com.apple.Time     "com.apple.TimeMachine.2019-05-02-151801",
    "com.apple.Time     "com.apple.TimeMachine.2019-05-02-175834"
2019-05-03 10:04:01  Failed to write unlock record UUIDs as extended attribute for disk '/', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
2019-05-03 10:04:01  Created Time Machine local snapshot with name 'com.apple.TimeMachine.2019-05-03-100401' on disk '/'
2019-05-03 10:04:02  Declared stable snapshot: com.apple.TimeMachine.2019-05-03-100401
2019-05-03 10:04:02  Mounted stable snapshot: com.apple.TimeMachine.2019-05-03-100401 at path: /Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/RMBPro1TBJWP/2019-05-03-100401/Macintosh HD source: Macintosh HD
2019-05-03 10:04:02  Mounted reference snapshot: com.apple.TimeMachine.2019-04-11-070153 at path: /Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/RMBPro1TBJWP/2019-04-11-070153/Macintosh HD source: Macintosh HD
2019-05-03 10:04:04  Event store UUIDs don't match for volume: SamsungEvo512GB
2019-05-03 10:04:04  Event store UUIDs don't match for volume: Macintosh HD
2019-05-03 10:04:04  Deep event scan at path:/Volumes/SamsungEvo512GB reason:must scan subdirs|new event db|
2019-05-03 10:04:05  Running deep scan - looking for changes after 2019-04-11 05:01:53 +0000
2019-05-03 10:05:22  Finished scan
2019-05-03 10:05:22  Saved event cache at /Volumes/4TBSeagateExpansionDriveJWP/Backups.backupdb/RMBPro1TBJWP/2019-05-03-100403.inProgress/9AA8BCAC-21A0-4BF8-AF17-D06FAD2A3E23/.DE4B183B-A6E1-395E-B263-BF33344206AF.eventdb
2019-05-03 10:05:22  Not using file event preflight for /Volumes/SamsungEvo512GB
2019-05-03 10:05:43  Will copy (71.78 GB) from SamsungEvo512GB
2019-05-03 10:05:43  Deep event scan at path:/Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/RMBPro1TBJWP/2019-05-03-100401/Macintosh HD reason:must scan subdirs|new event db|
2019-05-03 10:05:43  Running deep scan - looking for changes after 2019-04-11 05:01:53 +0000
2019-05-03 16:30:20  Unmounted local snapshot: com.apple.TimeMachine.2019-05-03-100401 at path: /Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/RMBPro1TBJWP/2019-05-03-100401/Macintosh HD source: Macintosh HD
2019-05-03 16:30:20  Unmounted local snapshot: com.apple.TimeMachine.2019-04-11-070153 at path: /Volumes/com.apple.TimeMachine.localsnapshots/Backups.backupdb/RMBPro1TBJWP/2019-04-11-070153/Macintosh HD source: Macintosh HD
2019-05-03 16:30:20  Backup canceled.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.

 
%d bloggers like this: