nerval

Thank you so much! That is incredible. Will save what can be saved and install a new cache drive.

Sorry for probably being a bit slow, but how would I go forward with copying the contents of the cache drive to for example the folder "cacherec" on disk6? I downloaded Krusader and tried browsing as well but can't find the cache drive there so I'm guessing I'll have to use a command for this in the terminal? Thanks again!

Well, I'll be damned. Did not notice I made a type there. Thanks! Now the result gives a lot more sense. Overall: Device size: 447.13GiB Device allocated: 335.02GiB Device unallocated: 112.11GiB Device missing: 0.00B Device slack: 0.00B Used: 158.32GiB Free (estimated): 286.36GiB (min: 286.36GiB) Free (statfs, df): 286.36GiB Data ratio: 1.00 Metadata ratio: 1.00 Global reserve: 108.31MiB (used: 0.00B) Multiple profiles: no Data Metadata System Id Path single single single Unallocated Total Slack -- -------------- --------- --------- -------- ----------- --------- ----- 1 /dev/nvme0n1p1 332.01GiB 3.01GiB 4.00MiB 112.11GiB 447.13GiB - -- -------------- --------- --------- -------- ----------- --------- ----- Total 332.01GiB 3.01GiB 4.00MiB 112.11GiB 447.13GiB 0.00B Used 157.76GiB 580.64MiB 64.00KiB That's what I get for starting testing your suggestions before making my morning coffee. Very much appreciate your help and patience.

Yeah, doesn't seem to have created the folder from what I can gather. root@Minilith:~# btrfs fi usage -T /recoverytemp ERROR: cannot access '/recoverytemp': No such file or directory Hmm, ls shows the folders alongside the other folders but with a green square. I can browse through the folders and it seems to be the correct cache drive folders from what I can gather.

Thank you. Well, that at least didn't give an error message in the log. Having a hard time sorting out what to do from there though. Used the command "mkdir /recovertemp" but can't seem to locate anything by that name anywhere. Dec 17 09:32:32 Minilith kernel: BTRFS info (device nvme0n1p1): enabling all of the rescue options Dec 17 09:32:32 Minilith kernel: BTRFS info (device nvme0n1p1): ignoring data csums Dec 17 09:32:32 Minilith kernel: BTRFS info (device nvme0n1p1): ignoring bad roots Dec 17 09:32:32 Minilith kernel: BTRFS info (device nvme0n1p1): disabling log replay at mount time Dec 17 09:32:32 Minilith kernel: BTRFS info (device nvme0n1p1): using free space tree Dec 17 09:32:32 Minilith kernel: BTRFS info (device nvme0n1p1): has skinny extents Dec 17 09:32:32 Minilith kernel: BTRFS info (device nvme0n1p1: state C): enabling ssd optimizations

Thanks, got the following error message when trying that: mount: /temp: wrong fs type, bad option, bad superblock on /dev/nvme0n1, missing codepage or helper program, or other error. dmesg(1) may have more information after failed mount system call. Log says the following: Dec 16 21:55:52 Minilith kernel: squashfs: Unknown parameter 'rescue' Dec 16 21:55:52 Minilith kernel: fuseblk: Unknown parameter 'rescue' Dec 16 21:55:52 Minilith kernel: UDF-fs: bad mount option "rescue=all" or missing value Dec 16 21:55:52 Minilith kernel: xfs: Unknown parameter 'rescue'

Thanks for the heads up, tested with read only enabled now and didn't seem to work either. That's a bummer. Dec 16 19:04:31 Minilith unassigned.devices: Adding partition 'nvme0n1p1'... Dec 16 19:04:31 Minilith unassigned.devices: Mounting partition 'nvme0n1p1' at mountpoint '/mnt/disks/50026B7282104CC2'... Dec 16 19:04:31 Minilith unassigned.devices: Mount drive command: /sbin/mount -t 'btrfs' -o ro,noatime,nodiratime,space_cache=v2,discard '/dev/nvme0n1p1' '/mnt/disks/50026B7282104CC2' Dec 16 19:04:31 Minilith kernel: BTRFS info (device nvme0n1p1): turning on sync discard Dec 16 19:04:31 Minilith kernel: BTRFS info (device nvme0n1p1): using free space tree Dec 16 19:04:31 Minilith kernel: BTRFS info (device nvme0n1p1): has skinny extents Dec 16 19:04:31 Minilith kernel: BTRFS info (device nvme0n1p1): enabling ssd optimizations Dec 16 19:04:31 Minilith kernel: BTRFS info (device nvme0n1p1): start tree-log replay Dec 16 19:04:31 Minilith kernel: nvme0n1: I/O Cmd(0x0) @ LBA 18446744073709551615, 0 blocks, I/O Error (sct 0x1 / sc 0x82) Dec 16 19:04:31 Minilith kernel: critical medium error, dev nvme0n1, sector 0 op 0x1:(WRITE) flags 0x800 phys_seg 0 prio class 0 Dec 16 19:04:31 Minilith kernel: BTRFS error (device nvme0n1p1): bdev /dev/nvme0n1p1 errs: wr 0, rd 0, flush 1, corrupt 0, gen 0 Dec 16 19:04:31 Minilith kernel: BTRFS warning (device nvme0n1p1): chunk 1048576 missing 1 devices, max tolerance is 0 for writable mount Dec 16 19:04:31 Minilith kernel: BTRFS: error (device nvme0n1p1) in write_all_supers:4368: errno=-5 IO failure (errors while submitting device barriers.) Dec 16 19:04:31 Minilith kernel: BTRFS warning (device nvme0n1p1: state E): Skipping commit of aborted transaction. Dec 16 19:04:31 Minilith kernel: BTRFS: error (device nvme0n1p1: state EA) in cleanup_transaction:1982: errno=-5 IO failure Dec 16 19:04:31 Minilith kernel: BTRFS: error (device nvme0n1p1: state EA) in btrfs_replay_log:2500: errno=-5 IO failure (Failed to recover log tree) Dec 16 19:04:31 Minilith kernel: BTRFS error (device nvme0n1p1: state EA): open_ctree failed Dec 16 19:04:31 Minilith unassigned.devices: Mount of 'nvme0n1p1' failed: 'mount: /mnt/disks/50026B7282104CC2: can't read superblock on /dev/nvme0n1p1. dmesg(1) may have more information after failed mount system call. ' Dec 16 19:04:31 Minilith unassigned.devices: Partition '50026B7282104CC2' cannot be mounted.

Planned on doing that but got a message I'd hit my limit of posts for the day so thought adding it to the OP was the best solution to that. Will remember to post it in a separate post in the future though. Seems that's a no-go for data recovery. Appreciate the help though! Dec 16 18:40:56 Minilith unassigned.devices: Adding partition 'nvme0n1p1'... Dec 16 18:40:56 Minilith unassigned.devices: Mounting partition 'nvme0n1p1' at mountpoint '/mnt/disks/50026B7282104CC2'... Dec 16 18:40:56 Minilith unassigned.devices: Mount drive command: /sbin/mount -t 'btrfs' -o rw,noatime,nodiratime,space_cache=v2,discard '/dev/nvme0n1p1' '/mnt/disks/50026B7282104CC2' Dec 16 18:40:56 Minilith kernel: BTRFS info (device nvme0n1p1): turning on sync discard Dec 16 18:40:56 Minilith kernel: BTRFS info (device nvme0n1p1): using free space tree Dec 16 18:40:56 Minilith kernel: BTRFS info (device nvme0n1p1): has skinny extents Dec 16 18:40:56 Minilith kernel: BTRFS info (device nvme0n1p1): enabling ssd optimizations Dec 16 18:40:56 Minilith kernel: BTRFS info (device nvme0n1p1): start tree-log replay Dec 16 18:40:56 Minilith kernel: nvme0n1: I/O Cmd(0x0) @ LBA 18446744073709551615, 0 blocks, I/O Error (sct 0x1 / sc 0x82) Dec 16 18:40:56 Minilith kernel: critical medium error, dev nvme0n1, sector 0 op 0x1:(WRITE) flags 0x800 phys_seg 0 prio class 0 Dec 16 18:40:56 Minilith kernel: BTRFS error (device nvme0n1p1): bdev /dev/nvme0n1p1 errs: wr 0, rd 0, flush 1, corrupt 0, gen 0 Dec 16 18:40:56 Minilith kernel: BTRFS warning (device nvme0n1p1): chunk 1048576 missing 1 devices, max tolerance is 0 for writable mount Dec 16 18:40:56 Minilith kernel: BTRFS: error (device nvme0n1p1) in write_all_supers:4368: errno=-5 IO failure (errors while submitting device barriers.) Dec 16 18:40:56 Minilith kernel: BTRFS warning (device nvme0n1p1: state E): Skipping commit of aborted transaction. Dec 16 18:40:56 Minilith kernel: BTRFS: error (device nvme0n1p1: state EA) in cleanup_transaction:1982: errno=-5 IO failure Dec 16 18:40:56 Minilith kernel: BTRFS: error (device nvme0n1p1: state EA) in btrfs_replay_log:2500: errno=-5 IO failure (Failed to recover log tree) Dec 16 18:40:56 Minilith kernel: BTRFS error (device nvme0n1p1: state EA): open_ctree failed Dec 16 18:40:56 Minilith unassigned.devices: Mount of 'nvme0n1p1' failed: 'mount: /mnt/disks/50026B7282104CC2: can't read superblock on /dev/nvme0n1p1. dmesg(1) may have more information after failed mount system call. ' Dec 16 18:40:56 Minilith unassigned.devices: Partition '50026B7282104CC2' cannot be mounted.

Hi, Came home to a cache disk showing as unmountable yesterday and have been trying to troubleshoot the issue. Would love any help finding out if it's recoverable or a goner. minilith-diagnostics-20221216-1801.zip