On 2019-01-03 16:27, Andrea Gelmini wrote:
On Thu, Jan 03, 2019 at 11:52:05AM +0900, Tomasz Chmielewski wrote:
Did you use 4.19.x kernels earlier than 4.19.8?
They had a bug which would corrupt filesystems (mostly ext4 users
would be
reporting it, but I saw it with other filesystems, like xfs and btrfs,
too):
Well, just for the record, it triggers when you have
scsi devices using elevator=none over blkmq.
And it's not a default/usual configuration.
Still - it is a default configuration for some distributions. I.e.
Ubuntu "ppa" kernels[1] have this enabled by default (at least 4.19.x
and 4.20.x).
[1] https://kernel.ubuntu.com/~kernel-ppa/mainline/
Tomasz Chmielewski
https://lxadm.com
