On 2019-01-03 17:22, Andrea Gelmini wrote:
On Thu, Jan 03, 2019 at 04:43:20PM +0900, Tomasz Chmielewski wrote:
> 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).
a) he is not using Ubuntu;
b) I use this PPA;
c) if you look at the config, you see the default scheduler is not
"none", also
the mq is compiled as module and - anyway - on release with the bug
you have to
force the kernel to use it with boot parameter.
Hmmm, is it the case?
# uname -r
4.20.0-042000-generic
# cat /sys/block/sda/queue/scheduler
[none]
# cat /sys/block/sdb/queue/scheduler
[none]
I could see filesystem corruption on every system using with PPA 4.19
lower than .8. Didn't do any kernel boot parameter changes when
upgrading from 4.18.
