Data just vanished ...

All your general support questions for OpenZFS on OS X.

Data just vanished ...

Postby Scrappy » Mon Oct 19, 2020 10:56 pm

No idea what happened ... one minute, all is running fine, the next ... my data is gone. Or rather, the data appears to still be there, but something somehow corrupted the root of the volume ... ?

Code: Select all
/dev/disk10s1  7.0Ti  6.3Ti  753Gi    90%   10759   197507213    0%   /Volumes/Plex


Code: Select all
# ls -l /Volumes/Plex
total 591
-rw-r--r--@  1 scrappy  staff    8196 Oct 19 23:30 .DS_Store
drwx------   4 root     wheel       4 Apr  2  2020 .Spotlight-V100
d-wx--x--t   5 root     wheel       5 Jul  4 14:42 .Trashes
-rw-r--r--   1 root     wheel  239735 Apr  2  2020 .VolumeIcon.icns
drwx------  29 root     wheel      29 Oct 19 23:37 .fseventsd


There *used* to be a few directories at the top, more important being: /Volumes/Plex/Seasons

Now, this is probably my fault, and am going to have to work the next while recovering the data ( possible, just very painful ), but after a reboot, I had 6 CKSUM errors on the middle volume:

Code: Select all
# zpool status -v Plex
  pool: Plex
 state: ONLINE
  scan: scrub repaired 0 in 0 days 00:00:03 with 0 errors on Mon Oct 19 23:34:19 2020
config:

   NAME                                            STATE     READ WRITE CKSUM
   Plex                                            ONLINE       0     0     0
     raidz1-0                                      ONLINE       0     0     0
       media-42DDE7B7-C87E-064B-A6B8-02107230D7AD  ONLINE       0     0     0
       media-167372F3-4258-FF4D-B26E-EA6E0A47C565  ONLINE       0     0     0
       media-C29C64DE-EF26-FB47-BD29-8C789CF57000  ONLINE       0     0     0

errors: No known data errors


Without thinking of checking /Volume/Plex, I ran zpool clear Plex since everything looked to be fine ... the reason why I power cycled the machine was due to that middle drive appearing to power off ( its in a RAID enclosure, so not sure how that could have happened, but neither here nor there ) ... when I powered back up, all three drives were found and running ...

I didn't create the files listed above, so it *looks* like the non .* directories were removed, but not the .* ones ...

From df, it looks like the underlying files still exist, just not the file name to match the inode at the top of it all ... ?

Is there anything that I can do / check to get that 6.3TB of data accessible again? Or is it just lost?

I haven't upgrade anything recently, but am running Catalina 10.15.7 with

Code: Select all
# zfs version
zfs-1.9.4-0
zfs-kmod-1.9.4-0


And ZetaWatch r43

Nothing critical on those drives, but if I can somehow avoid rebuilding what was on there that would be optimal ...

Have checked what log files in /var/log I can find, nothing is jumping out at me ...

Thanks for any help ... am not touching anything on that file system until I hear back ;(
Scrappy
 
Posts: 5
Joined: Fri Apr 10, 2020 10:35 pm

Re: Data just vanished ...

Postby Scrappy » Mon Oct 19, 2020 11:31 pm

Figured it out ... not sure how it happened, but the "missing files" were all in my Trash ... select, click on put back and everything is recovered ...

No idea *how* that happened, as I didn't consciously delete, but *wipe brow*
Scrappy
 
Posts: 5
Joined: Fri Apr 10, 2020 10:35 pm


Return to General Help

Who is online

Users browsing this forum: No registered users and 3 guests