u/weeglos

▲ 2 r/btrfs

Data corruption recovery

So I have a RAID-5 BTRFS filesystem using 4@6TB drives. I lost a disk, replaced it, and during the reboot, had a power outage longer than my UPS could handle. So my filesystem, when it came back, was extremely corrupted. I was able to recover the files I needed (home movies, etc) but there were a ton of rips of media - around 2500 files - that didn't make it. I knew the risks going in, and the plan has always been if this filesystem barfs I would just re-rip or download the stuff I care about. My question for the group is, are there any options that I have not considered to recover this data?

Scrubs come back with a lot of uncorrectable errors.

UID:             <redacted>
Scrub started:    Fri May  8 14:30:59 2026
Status:           running
Duration:         20:08:08
Time left:        143:02:07
ETA:              Fri May 15 09:41:16 2026
Total to scrub:   12.65TiB
Bytes scrubbed:   1.56TiB  (12.34%)
Rate:             22.58MiB/s (some device limits set)
Error summary:    csum=79663859
  Corrected:      0
  Uncorrectable:  79663859^C

Now, while I am not heartbroken thanks to my plan for this data going in, there will be a lot of effort involved in re-ripping all my media. Are there any options available to me to try to recover additional files?

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u/weeglos — 14 days ago