Hi all. 

I've upgraded from the previous stable 6.x release to 7 today, and now my cache drive is showing as "Unmountable: Unsupported or no file system" . 

I've searched through the forums, and googled a bit, but nothing I have tried has fixed the issue. Here are my logs, any help would be very much appreciated. 

DJ

 

djnas-diagnostics-20250114-1132.zip

There is a problem with the filesystem that was possibly going undetected with the previous kernel:

 

Jan 14 11:30:07 DJNAS kernel: BTRFS critical (device sdg1): corrupt leaf: block=1133019136 slot=16 extent bytenr=89140834304 len=24576 invalid data ref root value 3743601316052598789
Jan 14 11:30:07 DJNAS kernel: BTRFS error (device sdg1): read time tree block corruption detected on logical 1133019136 mirror 1
Jan 14 11:30:07 DJNAS kernel: BTRFS error (device sdg1): failed to read block groups: -5
Jan 14 11:30:07 DJNAS kernel: BTRFS error (device sdg1): open_ctree failed

 

I would recommend first downgrading back to the release you were using, if the pool still mounts there, back up all the data and reformat before upgrading again, if it doesn't let me know, there are some recovery options that you can try.

Well, this looks like the spot in the log file. Searching for some of these errors hasn't got me any further unfortunately. I'll leave it on 7 now, see if anyone can help, otherwise I'll roll it back later this week and try it back on 6.x...

Jan 14 11:30:26 DJNAS emhttpd: mounting /mnt/cache
Jan 14 11:30:26 DJNAS emhttpd: shcmd (48): mkdir -m 0666 -p /mnt/cache
Jan 14 11:30:26 DJNAS emhttpd: /sbin/blkid /dev/sdg1 2>&1
Jan 14 11:30:26 DJNAS emhttpd: /dev/sdg1: UUID="25e98a5b-fd2e-4e87-b1c9-afedd927f3f3" UUID_SUB="abef354e-2e2a-4109-990d-751be0d19104" BLOCK_SIZE="4096" TYPE="btrfs"
Jan 14 11:30:26 DJNAS emhttpd: cache: btrfs verify devices
Jan 14 11:30:26 DJNAS emhttpd: /sbin/btrfs filesystem show 25e98a5b-fd2e-4e87-b1c9-afedd927f3f3 2>&1
Jan 14 11:30:26 DJNAS emhttpd: Label: none  uuid: 25e98a5b-fd2e-4e87-b1c9-afedd927f3f3
Jan 14 11:30:26 DJNAS emhttpd:     Total devices 1 FS bytes used 170.78GiB
Jan 14 11:30:26 DJNAS emhttpd:     devid    1 size 447.14GiB used 174.01GiB path /dev/sdg1
Jan 14 11:30:26 DJNAS emhttpd: mounting: cache devices: 1 slots: 1 missing: 0
Jan 14 11:30:26 DJNAS emhttpd: shcmd (49): mount -t btrfs -o noatime,space_cache=v2 -U 25e98a5b-fd2e-4e87-b1c9-afedd927f3f3 /mnt/cache
Jan 14 11:30:26 DJNAS kernel: BTRFS: device fsid 25e98a5b-fd2e-4e87-b1c9-afedd927f3f3 devid 1 transid 4775273 /dev/sdg1 scanned by mount (8413)
Jan 14 11:30:26 DJNAS kernel: BTRFS info (device sdg1): first mount of filesystem 25e98a5b-fd2e-4e87-b1c9-afedd927f3f3
Jan 14 11:30:26 DJNAS kernel: BTRFS info (device sdg1): using crc32c (crc32c-intel) checksum algorithm
Jan 14 11:30:26 DJNAS kernel: BTRFS info (device sdg1): using free space tree
Jan 14 11:30:26 DJNAS kernel: BTRFS critical (device sdg1): corrupt leaf: block=1133019136 slot=16 extent bytenr=89140834304 len=24576 invalid data ref root value 3743601316052598789
Jan 14 11:30:26 DJNAS kernel: BTRFS error (device sdg1): read time tree block corruption detected on logical 1133019136 mirror 1
Jan 14 11:30:26 DJNAS kernel: BTRFS error (device sdg1): failed to read block groups: -5
Jan 14 11:30:26 DJNAS root: mount: /mnt/cache: can't read superblock on /dev/sdg1.
Jan 14 11:30:26 DJNAS root:        dmesg(1) may have more information after failed mount system call.
Jan 14 11:30:26 DJNAS kernel: BTRFS error (device sdg1): open_ctree failed
Jan 14 11:30:26 DJNAS emhttpd: shcmd (49): exit status: 32
Jan 14 11:30:26 DJNAS emhttpd: shcmd (50): rmdir /mnt/cache
Jan 14 11:30:26 DJNAS emhttpd: cache: mount error: wrong or no file system

Thanks JorgeB. I've now rolled back to 6.12.4 and the cache drive has come up, VMs and docker containers are all there. 

I'll copy the data off in the next few days and reformat as you have suggested. Will update this thread. 

Many thanks 

DJ

Thanks JorgeB. I downgraded, copied all the data off and reformated the cached drive. Moved it all back and then upgraded to Unraid 7 and all looking good now. Thanks for your help