Re: btrfs induced data loss (on xfs) - 5.19.0-38-generic

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On Sun, Apr 16, 2023 at 10:20:45PM -0700, Kyle Sanderson wrote:
> The single btrfs disk was at 100% utilization and a wa of 50~, reading
> back at around 2MB/s. df and similar would simply freeze. Leading up
> to this I removed around 2T of data from a single btrfs disk. I
> managed to get most of the services shutdown and disks unmounted, but
> when the system came back up I had to use xfs_repair (for the first
> time in a very long time) to boot into my system. I likely should have
> just pulled the power...
> 
> [1147997.255020] INFO: task happywriter:3425205 blocked for more than
> 120 seconds.
> [1147997.255088]       Not tainted 5.19.0-38-generic #39~22.04.1-Ubuntu

This is a distro-specific kernel, sorry, nothing to do with our releases
as the 5.19 kernel branch is long end-of-life.  Please work with your
distro for this issue if you wish to stick to this kernel version.

good luck!

greg k-h



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