10.0.3 update killed Time Machine backups

Since the 10.0.3 update around 6am this morning, every Time Machine on Big Sur 11.2.1 backup fails.  The last Time Machine backup that worked was around 5:30am.

Once the backup failed because target disk could not be found, the rest of the failures had no error listed.  I've rebooted the NAS and rebooted the MacBook Pro multiple times.  Nothing works.

Any suggestions?



spelling error fixed
[edited by: Brian Bresnan at 7:29 PM (GMT -8) on 11 Feb 2021]
  • Here's the Time Machine log:

    2021-02-11 14:35:09.521588-0500 0x4b7ed    Info        0x0                  6573   0    backupd: (TimeMachine) [com.apple.TimeMachine:General] Starting automatic backup

    2021-02-11 14:35:09.534255-0500 0x4b7ed    Info        0x0                  6573   0    backupd: (TimeMachine) [com.apple.TimeMachine:General] Network destination already mounted at: /Volumes/.timemachine/NAS2._smb._tcp.local./2BBE5A07-59F0-4286-B0B5-5AD4790365CD/TimeMachine2020

    2021-02-11 14:35:09.552503-0500 0x4b7ed    Info        0x0                  6573   0    backupd: (TimeMachine) [com.apple.TimeMachine:General] Initial network volume parameters for 'TimeMachine2020' {disablePrimaryReconnect: 0, disableSecondaryReconnect: 0, reconnectTimeOut: 30, QoS: 0x20, attributes: 0x1C}

    2021-02-11 14:35:09.565302-0500 0x4b7ed    Info        0x0                  6573   0    backupd: (TimeMachine) [com.apple.TimeMachine:General] Configured network volume parameters for 'TimeMachine2020' {disablePrimaryReconnect: 0, disableSecondaryReconnect: 0, reconnectTimeOut: 30, QoS: 0x20, attributes: 0x1C}

    2021-02-11 14:35:11.029180-0500 0x4b7ed    Info        0x0                  6573   0    backupd: (TimeMachine) [com.apple.TimeMachine:General] Found matching sparsebundle 'MacBookPro.sparsebundle' with host UUID '98995D84-43D4-5EC2-82E8-AA8AE425DF18' and MAC address '(null)'

    2021-02-11 14:35:11.301935-0500 0x4b7ee    Info        0x0                  6573   0    backupd: (TimeMachine) [com.apple.TimeMachine:General] Mountpoint '/Volumes/.timemachine/NAS2._smb._tcp.local./2BBE5A07-59F0-4286-B0B5-5AD4790365CD/TimeMachine2020' is still valid

    2021-02-11 14:35:11.302709-0500 0x4b7ee    Error       0x0                  6573   0    backupd: (TimeMachine) [com.apple.TimeMachine:General] Invalid mountpoint '/Volumes/Backups of MacBookPro' - failed to open '/Volumes/Backups of MacBookPro/.iotest', error: 5 Input/output error

    2021-02-11 14:35:11.302828-0500 0x4b7f2    Info        0x0                  6573   0    backupd: (TimeMachine) [com.apple.TimeMachine:General] Stopping backup to allow volume '/Volumes/Backups of MacBookPro' to be unmounted.

    2021-02-11 14:35:11.302859-0500 0x4b7f2    Info        0x0                  6573   0    backupd: (TimeMachine) [com.apple.TimeMachine:General] Backup cancel was requested.

    2021-02-11 14:35:21.308142-0500 0x4b7f2    Error       0x0                  6573   0    backupd: (TimeMachine) [com.apple.TimeMachine:General] backupd exiting - cancelation timed out

    2021-02-11 14:35:21.311120-0500 0x445aa    Error       0x0                  223    0    backupd-helper: (TimeMachine) [com.apple.TimeMachine:General] XPC error for connection com.apple.backupd.xpc: Connection interrupted

    2021-02-11 14:35:21.311230-0500 0x445aa    Error       0x0                  223    0    backupd-helper: (TimeMachine) [com.apple.TimeMachine:General] Not starting scheduled Time Machine backup: Failed to send message to backupd

  • The SDU is fb42f1ab-2718-f431-781e-d406dd3194f8_2021-02-11-19-59-45.zip 

  • On the positive side, NordVPN and Tunnelblik work fine.  Also, eicars.com was detected and cleaned on download.  The txt file was not detected on downloading or opening.  The eicars zip files were not detected on download but they were detected on unzipping.

  • Hi, I'm getting the same.

    Worked fine until 00:14 today, then nothing

  • Hello Brian,

    my name is Frank and I'm an engineer here at Sophos and look right now into your TimeMachine issue.

    especially in 10.0.3 we made improvements to not fail backups to SMB shares on NAS devices, so here are some questions:

    1) what type of NAS device are you using?

    2) does the error persist if you turn off 'file scanning' and/or 'ransomware detection'?

    3) does a backup succeed after you remove and then re-add the backup volume in the time machine preferences?

    Frank

    ESG - Mac Endpoint

  • Hi Frank,

    Here are the answers:

    1. Synology DS-918+ with DSM 6.2.3-25426 Update 3 (not the DSM 7 beta)

    2.  Yes. I turned off file scanning, ransomware, and then both.  Nothing worked.

    3.  No.

  • Hi Frank,

    For your information, I have

    1) WD EX2 Ultra, f/w 5.09.115

    2) I have turned off file scanning and ransomware and it works. I will send more info when the backup has finished (it's a bit big)

    3) Did not have any effect.

  • Update - the backup starts, slows to crawl, then gets stuck on 'Calculation time remaining', Although it is still backing up at a ridiculously slow rate.

  • I just was researching this "failed to open '/Volumes/Backups of MacBookPro/.iotest', error: 5 Input/output error". Are you willing to create a temporary new share on your NAS and assign it to time machine and communicate the results of a backup attempt?

  • Sure, give me a moment to set it up.