May 25May 25 I’m having lots of issues lately with time machine backups failing. They fail with an error that destination is not available try again later. Happens roughly 50% of the time and with multiple computers. I’m using stock Unraid SMB settings for these backups. This behavior started with 7.2.5 and continues with 7.3.brunnhildeii-diagnostics-20260525-1606.zip Edited May 25May 25 by wgstarks Typo
May 26May 26 Community Expert Recommend removing all the extra SMB parameters and retesting. If nothing else, they are spamming the log.
May 26May 26 Author There don’t appear to be any SMB settings related to time machine but I have commented out all the settings.First attempt after the change failed. Second one worked.
May 27May 27 Author 23 hours ago, JorgeB said:Reboot to clear the logs, and post new diags after it fails again.Here you go. Backup worked properly one time and then failed the next.brunnhildeii-diagnostics-20260527-0726.zip
May 27May 27 Community Expert Looks like the sparse bundle got corrupt:fruit_get_bandsize: Didn't find band-size key in .../Info.plistfruit_tmsize_do_dirent: Processing sparsebundle failedThe best bet is to delete the TM backup bundle for that Mac and start a new one.
May 27May 27 Author 15 minutes ago, JorgeB said:The best bet is to delete the TM backup bundle for that Mac and start a new one.I'll give that a try. This is a brand new backup so nothing really lost.Thanks
May 28May 28 Author Still failing with a not available error.brunnhildetwo-diagnostics-20260528-0859.zip
May 28May 28 Community Expert May 28 08:57:00 BrunnhildeTwo smbd[140213]: build_sam_account: smbpasswd database is corrupt! username htmini with uid 1002 is not in unix passwd database!May 28 08:57:00 BrunnhildeTwo smbd[140213]: [2026/05/28 08:57:00.933085, 0] ../../source3/smbd/msdfs.c:107(parse_dfs_path_strict)smbpasswd also is corrupt, try deleting that from the flash drive/internal boot. Note that I think it will reset the passwords for all SMB users.
May 28May 28 Author 51 minutes ago, JorgeB said:May 28 08:57:00 BrunnhildeTwo smbd[140213]: build_sam_account: smbpasswd database is corrupt! username htmini with uid 1002 is not in unix passwd database!May 28 08:57:00 BrunnhildeTwo smbd[140213]: [2026/05/28 08:57:00.933085, 0] ../../source3/smbd/msdfs.c:107(parse_dfs_path_strict)smbpasswd also is corrupt, try deleting that from the flash drive/internal boot. Note that I think it will reset the passwords for all SMB users.No idea how to do this?
May 28May 28 Author Just now, wgstarks said:No idea how to do this?Oh wait. It’s a file in /boot/config/?
May 28May 28 Author 1 hour ago, JorgeB said:try deleting that from the flash drive/internal bootDeleted the file on /boot. Do I also need to reboot the server?
May 28May 28 Author Had to change all the user passwords to recreate the file. We'll see what happens now.
May 29May 29 Community Expert Solution The problem now appears to be the network; the Mac is losing its network connection mid-transfer, which may be what was causing the files to corrupt in the first place.sendfile failed for file ... (Connection reset by peer) ... remote=ipv4:10.0.1.177:53402, local=ipv4:10.0.1.20:445. Terminating
May 29May 29 Author 3 hours ago, JorgeB said:The problem now appears to be the networkYou think it might be port congestion? I’m going to be switching to an sfp+ DAC connection this weekend probably, assuming all the parts deliver on time.
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