Unmountable Cache Drive - lost dockers - 6.5.3

[spidie2000]

Hey all, I am fairly new to unraid so forgive me.  I have a 4 drive array and 4 cache drives.  I had plex and all my dockers installed on one of the cache drives.  My trial recently expired and I activated a new pro license.  Upon reboot I found I was having permissions issues in windows.  I could access my files, but plex could not seem to play any of my media, also utorrent kept getting write errors and would not write to my array.  I found the New Permissions tool and ran it on all my disks as well as all my user shares.  It looks like this was a mistake, after this was done all my dockers went missing and one of my 4 cache drives (the one the dockers were installed on) now shows unmountable.  I can no longer access my files in windows as the shares are gone.  I'm not sure what my best course of action is.  Do I need to reformat that cache drive, re-create all my shares, and reinstall all my dockers?  Are the files on my array still safe? 

 

[trurl]

33 minutes ago, spidie2000 said:

one of my 4 cache drives (the one the dockers were installed on)

This part doesn't make any sense because there is no way to access drives in the cache pool separately.

 

Go to Tools - Diagnostics and post the complete zip.

[spidie2000]

Ok, I may be mistaken, my friend help me set up this server.  I thought that plex was installed on the cache drive.  I just noticed that on my shares tab all of my shares are missing.  Here is the diagnostic file tower-diagnostics-20181017-1450.zip

 

Edited October 17, 2018 by spidie2000

[spidie2000]

54 minutes ago, trurl said:

This part doesn't make any sense because there is no way to access drives in the cache pool separately.

 

Go to Tools - Diagnostics and post the complete zip.

I think he did not have that 1st drive as part of the cache pool, I believe he was just using it as a 100G SSD to run plex.  Does this make more sense?

[JorgeB]

The 4 devices are part of the cache pool, but the filesystem is corrupt, see here to try and recover your data before re-formatting the pool:

https://forums.unraid.net/topic/46802-faq-for-unraid-v6/?do=findComment&comment=543490

 

[JorgeB]

2 hours ago, spidie2000 said:

Are the files on my array still safe? 

Just to be clear, the array data and shares are safe, if there's no important data on the cache pool you can just format.

[spidie2000]

so I went to my shares and hit add new share.  re-created my plex media share.  But it still shows I have no SMB shares

 

 

[JonathanM]

58 minutes ago, spidie2000 said:

so I went to my shares and hit add new share.  re-created my plex media share.  But it still shows I have no SMB shares

User shares are a combination of folders on the array drives and the cache pool. Until you resolve the corruption issue with the cache pool, you can't see your shares.

[spidie2000]

7 hours ago, johnnie.black said:

The 4 devices are part of the cache pool, but the filesystem is corrupt, see here to try and recover your data before re-formatting the pool:

https://forums.unraid.net/topic/46802-faq-for-unraid-v6/?do=findComment&comment=543490

 

Linux 4.14.49-unRAID.
root@Tower:~# mkdir /x
root@Tower:~# mount -o recovery,ro /dev/sgd1 /x
mount: /x: special device /dev/sgd1 does not exist.
root@Tower:~# mount -o recovery,ro /dev/sdg1 /x
mount: /x: can't read superblock on /dev/sdg1.
root@Tower:~# mount -o degraded,recovery,ro /dev/sdg1 /x
mount: /x: can't read superblock on /dev/sdg1.

 

I am trying option #1, getting errors.  sdg1 is the unmountable drive.  Not sure if I am doing this correct.  Let me know if I am doing something wrong or if I should move on to option #2

[JorgeB]

Doesn't look good, reboot and then post the output of:

 btrfs rescue super-recover -v /dev/sdg1

[spidie2000]

16 hours ago, johnnie.black said:

Doesn't look good, reboot and then post the output of:
 

 btrfs rescue super-recover -v /dev/sdg1

 

 

Sorry i've had a busy day.  Here is what I got.  I will say when i first reboot everything looks good for a few minutes and my shares show up, but they disappear after 5 minutes or so.  This output was run while my share still show present.  When the shares disappear again I'll run this again and see if the output changes.

 

Linux 4.14.49-unRAID.
root@Tower:~# btrfs rescue super-recover -v /dev/sdg1
All Devices:
        Device: id = 4, name = /dev/sdj1
        Device: id = 2, name = /dev/sdh1
        Device: id = 3, name = /dev/sdi1
        Device: id = 1, name = /dev/sdg1

Before Recovering:
        [All good supers]:
                device name = /dev/sdj1
                superblock bytenr = 65536

                device name = /dev/sdj1
                superblock bytenr = 67108864

                device name = /dev/sdh1
                superblock bytenr = 65536

                device name = /dev/sdh1
                superblock bytenr = 67108864

                device name = /dev/sdi1
                superblock bytenr = 65536

                device name = /dev/sdi1
                superblock bytenr = 67108864

                device name = /dev/sdg1
                superblock bytenr = 65536

                device name = /dev/sdg1
                superblock bytenr = 67108864

        [All bad supers]:

All supers are valid, no need to recover

 

[spidie2000]

Ok somewhere between 30 minutes and 1 hour of uptime the shares disappeared.  I ran the command again and now i get an error on the output.

 

Linux 4.14.49-unRAID.
Last login: Thu Oct 18 18:04:57 -0600 2018 on /dev/pts/0.
root@Tower:~# btrfs rescue super-recover -v /dev/sdg1
ERROR: mount check: cannot open /dev/sdg1: No such file or directory
ERROR: could not check mount status: No such file or directory

[JorgeB]

7 hours ago, spidie2000 said:

cannot open /dev/sdg1: No such file or directory

That would imply cache device dropped offline, diags would show.

[spidie2000]

On 10/19/2018 at 3:29 AM, johnnie.black said:

That would imply cache device dropped offline, diags would show.

here is the zip, i'm not sure where to go from here.  is reformatting going to be my only option?

[trurl]

32 minutes ago, spidie2000 said:

here is the zip,

looks like you forgot something

[spidie2000]

tower-diagnostics-20181022-0720.zip

 

Sorry i coulda swore I attached it.

[JorgeB]

Diags are after rebooting so not much help there, all cache devices are back online now, but if the btrfs recovery options in the FAQ don't work either format the pool or you can ask for help in the btrfs mailing list.