I've been running into (what I believe) is the same issue ever since
upgrading to 4.19:
[28950.083040] BTRFS error (device dm-0): bad tree block start, want
1815648960512 have 0
[28950.083047] BTRFS: error (device dm-0) in __btrfs_free_extent:6804:
errno=-5 IO failure
[28950.083048] BTRFS info
I was having the same issue with kernels 4.19.2 and 4.19.4. I don’t appear to
have the issue with 4.20.0-0.rc1 on Fedora Server 29.
The issue is very easy to reproduce on my setup, not sure how much of it is
actually relevant, but here it is:
- 3 drive RAID5 created
- Some data moved to it
-
I obviously can't be sure (due to obscure nature of this issue) but I
think I observed similar behavior. For me it usually kicked in during
scheduled de-fragmentation runs. I initially suspected it might have
something to do with running defrag on files which are still opened
for appending writes
I started having a host freeze randomly when running a 4.18 kernel. The
host was stable when running 4.17.12.
At first, it appeared that it was only IO that was frozen since I could
run common commands that were likely cached in RAM and that did not
touch storage. Anything that did touch
