I noticed some VMs and Dockers weren't working so I logged into the server and the cache drive doesn't have a file system and cant be mounted. Attached is the diagnostic file, I'll look into getting a SMART report for that drive also.

 

Mods: I posted a very similar thread the other day without diagnostics, please delete that.

homeserver-diagnostics-20190321-1917.zip

There are apparent connection problems with the SSD:

 

Mar 20 15:51:31 HomeServer kernel: ata2: failed to read log page 10h (errno=-5)
Mar 20 15:51:31 HomeServer kernel: ata2.00: exception Emask 0x1 SAct 0xc00 SErr 0x0 action 0x0
Mar 20 15:51:31 HomeServer kernel: ata2.00: irq_stat 0x40000008
Mar 20 15:51:31 HomeServer kernel: ata2.00: failed command: WRITE FPDMA QUEUED
Mar 20 15:51:31 HomeServer kernel: ata2.00: cmd 61/00:50:f8:6e:b7/02:00:02:00:00/40 tag 10 ncq dma 262144 out
Mar 20 15:51:31 HomeServer kernel:         res 40/00:5c:e0:2d:1f/00:00:00:00:00/40 Emask 0x1 (device error)
Mar 20 15:51:31 HomeServer kernel: ata2.00: status: { DRDY }
Mar 20 15:51:31 HomeServer kernel: ata2.00: failed command: READ FPDMA QUEUED
Mar 20 15:51:31 HomeServer kernel: ata2.00: cmd 60/20:58:e0:2d:1f/00:00:00:00:00/40 tag 11 ncq dma 16384 in
Mar 20 15:51:31 HomeServer kernel:         res 40/00:5c:e0:2d:1f/00:00:00:00:00/40 Emask 0x1 (device error)
Mar 20 15:51:31 HomeServer kernel: ata2.00: status: { DRDY }
Mar 20 15:51:31 HomeServer kernel: ata2.00: model number mismatch 'Crucial_CT240M500SSD1' != ''
Mar 20 15:51:31 HomeServer kernel: ata2.00: revalidation failed (errno=-19)
Mar 20 15:51:31 HomeServer kernel: ata2: limiting SATA link speed to 1.5 Gbps
Mar 20 15:51:31 HomeServer kernel: ata2.00: limiting speed to UDMA/133:PIO3
Mar 20 15:51:31 HomeServer kernel: ata2: hard resetting link
Mar 20 15:51:31 HomeServer kernel: ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
Mar 20 15:51:31 HomeServer kernel: ata2.00: supports DRM functions and may not be fully accessible
Mar 20 15:51:31 HomeServer kernel: ata2.00: disabling queued TRIM support
Mar 20 15:51:31 HomeServer kernel: ata2.00: supports DRM functions and may not be fully accessible
Mar 20 15:51:31 HomeServer kernel: ata2.00: disabling queued TRIM support
Mar 20 15:51:31 HomeServer kernel: ata2.00: configured for UDMA/133
Mar 20 15:51:31 HomeServer kernel: ata2: EH complete

 

Replace both cables and try again, but cache filesystem might already be corrupted.

I tried new cables and got the errors that I screenshot, the attached log and the same "unmountable" error that I had before.

 

I am going to lose everything on the cache drive? I've got time tomorrow to replace it but I would rather not lose everything that was on it.

homeserver-diagnostics-20190326-1319.zip

See here for help to try and recover the cache data:

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

 

I needed to get the server back up so I replaced the cache drive. I'll look into getting the data off the old drive from the above link. Any additional help appreciated.

My server is back up with a new cache drive but I’m wondering what the best way to make sure I don’t lose my dockers and vms again. Should I move appdata to the pool? Do some sort of backup of appdata? If I add a second cache drive do they mirror each other?

23 minutes ago, potts.mike said:

Do some sort of backup of appdata

https://forums.unraid.net/topic/61211-plugin-ca-appdata-backup-restore-v2/

 

24 minutes ago, potts.mike said:

If I add a second cache drive do they mirror each other?

Yes, mirror (raid1) is the default for cache pool.

Exactly what I needed, thanks.