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Missing single share says exists on no disks


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Posted

Hi folks. Freaking out, so really hoping this is a simple fix.  My main media share has gone missing, which most importantly includes ALL my digital photos.  Afraid to do anything (reboot or otherwise) until I have some advice for the forum.  I've ran and attached diagnostics. 

 

At first look nothing looks off as far as failures AFAIK, and my individual drives have quite a bit of space in use still according to the dashboard so there's still data on the individual drives.  I've made no changes and everything was there fine 2 days ago.  On second review the main dashboard I believe I have a SMART CDC error on my parity drive (admittedly my drives are all getting rather old.)  I am afraid to reboot or do ANYTHING without some advice, as I don't want to make anything worse.

 

Version: 6.8.2  4 - 3 TB drives, (3 disk/1 parity) and ssd cache.

 

Basically my downloads and appdata shares etc are all there fine. However there's no config for my media share showing in the web console.  When I go to command prompt and browse the individual drives under /mnt I see no media share, and the file in diagnostics says media share is configed for all 3 drives, but share exists on no drives.  

 

Any advice?

Am I safe to reboot to see?

Should I be running a parity check (or replacing the drive, then running one)

 

Help. I'll live if my general media is gone, but please please don't let my digital photos be gone.

 

 

tower-diagnostics-20200530-1846.zip

Posted

Rebooted, media share now listed again in dashboard, but issue not resolved.  Share is not visible via SMB despite being exported, and browsing via terminal or web console, just lists 2 empty directories, TV and Movies.  I notice the media share and subdirs have root:root as opposed to nobody:users.  

 

Again dashboard says HDs have data in use, but I can't see anything through the terminal/web console in the filesystem.  Basically as if the filesystem has lost all the directories, but drives are still 60% in use.

 

Are there other recovery mechanisms I should be considering, like going into maintenance mode and running the appropriate XFS and resierfs filesystem check tools on each drive.  I presume running a read-only check on each disk is safe.  As mentioned just want to ensure I don't do anything taht could further prevent recovery of my photos/documents at the very least.

 

thanks for the help, pretty nervous.

 

attached is a new diagnostics log

 

 

 

 

tower-diagnostics-20200531-0810.zip

Posted

came back clean.  here's the results. no change obviously bringing up the array in normal mode.

 

disk1

reiserfsck 3.6.27

Will read-only check consistency of the filesystem on /dev/md1
Will put log info to 'stdout'
###########
reiserfsck --check started at Sun May 31 09:02:31 2020
###########
Replaying journal: 
Replaying journal: Done.
Reiserfs journal '/dev/md1' in blocks [18..8211]: 0 transactions replayed
Checking internal tree..  finished
Comparing bitmaps..finished
Checking Semantic tree:
finished
No corruptions found
There are on the filesystem:
    Leaves 569768
    Internal nodes 3451
    Directories 2312
    Other files 79516
    Data block pointers 570174106 (2080810 of them are zero)
    Safe links 0
###########
reiserfsck finished at Sun May 31 09:19:39 2020
###########


disk2
reiserfsck 3.6.27

Will read-only check consistency of the filesystem on /dev/md2
Will put log info to 'stdout'
###########
reiserfsck --check started at Sun May 31 09:51:02 2020
###########
Replaying journal: 
Replaying journal: Done.
Reiserfs journal '/dev/md2' in blocks [18..8211]: 0 transactions replayed
Checking internal tree..  finished
Comparing bitmaps..finished
Checking Semantic tree:
finished
No corruptions found
There are on the filesystem:
    Leaves 406906
    Internal nodes 2457
    Directories 1015
    Other files 36894
    Data block pointers 409200349 (1338999 of them are zero)
    Safe links 0
###########
reiserfsck finished at Sun May 31 09:58:33 2020
###########

disk3

Phase 1 - find and verify superblock...
        - block cache size set to 139720 entries
Phase 2 - using internal log
        - zero log...
zero_log: head block 90050 tail block 90050
        - scan filesystem freespace and inode maps...
        - found root inode chunk
Phase 3 - for each AG...
        - scan (but don't clear) agi unlinked lists...
        - process known inodes and perform inode discovery...
        - agno = 0
        - agno = 1
        - agno = 2
        - agno = 3
        - process newly discovered inodes...
Phase 4 - check for duplicate blocks...
        - setting up duplicate extent list...
        - check for inodes claiming duplicate blocks...
        - agno = 0
        - agno = 1
        - agno = 2
        - agno = 3
No modify flag set, skipping phase 5
Phase 6 - check inode connectivity...
        - traversing filesystem ...
        - agno = 0
        - agno = 1
        - agno = 2
        - agno = 3
        - traversal finished ...
        - moving disconnected inodes to lost+found ...
Phase 7 - verify link counts...
No modify flag set, skipping filesystem flush and exiting.

        XFS_REPAIR Summary    Sun May 31 10:50:21 2020

Phase        Start        End        Duration
Phase 1:    05/31 10:50:18    05/31 10:50:19    1 second
Phase 2:    05/31 10:50:19    05/31 10:50:19
Phase 3:    05/31 10:50:19    05/31 10:50:21    2 seconds
Phase 4:    05/31 10:50:21    05/31 10:50:21
Phase 5:    Skipped
Phase 6:    05/31 10:50:21    05/31 10:50:21
Phase 7:    05/31 10:50:21    05/31 10:50:21

Total run time: 3 seconds

 

echo $? returns 0 (no corrpution)

Posted (edited)
1 hour ago, johnnie.black said:

That looks like a permissions issue, run newperms on those shares.

I think that sorted itself somehow to nobody:users since i last posted (not in a helpful way directories are still empty)  My understanding of newperms is it will correct directory/file permissions for unraid, but my question is if I can't see anything in the directories when i browse via terminal does newperms actually fix this?  

 

Ie media share has a TV and Movies subdirectory, but there's nothing in them, and similarly if I browse disk 1, 2 directly there's no media directory despite being configured for it, only on disk 3 is there a media share, with the aforementioned blank Movies and TV directory.  So does newperms actually rescan the drives and find hidden folders/data that i can't see via a terminal and correct permissions?

 

I did also try using unassigned devices plug in to mount and check each drive individually, and same result. I don't see any directory or data structure for media other than the blank on disk 3

 

Does this mean I'm potentially into drive recovery tools?

 

(I've been looking at them, and did a test run on of UFS explorer recovery live CD on a non-unraid drive..)

 

 

 

Edited by Sneaks
Posted
29 minutes ago, Sneaks said:

but my question is if I can't see anything in the directories when i browse via terminal does newperms actually fix this?  

No, I missed this part.

 

31 minutes ago, Sneaks said:

Does this mean I'm potentially into drive recovery tools?

If the data is actually missing it's probably the best bet.

Posted
6 hours ago, johnnie.black said:

No, I missed this part.

 

If the data is actually missing it's probably the best bet.

Thanks, yes that's what I'm thinking. 

 

Basically unraid seems to think the partition is there and there's data on the drives, but if I browse through the individual disks via the web, or /mnt/disk1,2,3 on terminal window nothing there.

 

Posted (edited)

agreed, everything I understand about unraid, this is very odd.  I don't understand what went wrong. Can't help think did I do something.

 

I'm hopeful given the partitions appear to be there, recovery tools will be able to pull out the data at least.  Once I've run through that. Then I plan to swap in an upgraded motherboard/CPU/RAM (just updated my workstation so handing down the parts) and then I plan to rebuild the array and my UNRAID config.

Edited by Sneaks

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