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

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On Sun, Apr 16, 2023 at 11:01 PM Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
>
> 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

Disappointing but fair (default kernel for Ubuntu Jammy, they offer no
lts options unfortunately) - thanks for taking a look anyway.

K.

On Sun, Apr 16, 2023 at 11:01 PM Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
>
> 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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