btrfs scrub under linux with ck-patchset - oops

btrfs scrub under linux with ck-patchset - oops

[Leonidas Spyropoulos]

Hi list,

Before I give all the information to this email and then find that's not
the right place to do so..

Does anyone experience issues with I/O intensive operations using btrfs
and BFQ io scheduler? I had a kernel panic while running (almost at the
start) a scrub and I glimpsed the elevator.c filename on the kernel dump
before I had to hard-reset.

If this is not the place to ask because maybe BFQ or ck patchset is not
supported under this list please let me know and I will redirect the
question elsewhere. Otherwise I can provide all informations to
reproduce it - it was reproducable.

Regards,
Leonidas

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Re: btrfs scrub under linux with ck-patchset - oops

[Holger Hoffstätte]

On Fri, 08 May 2015 11:10:02 +0100, Leonidas Spyropoulos wrote:

> Does anyone experience issues with I/O intensive operations using btrfs
> and BFQ io scheduler? I had a kernel panic while running (almost at the
> start) a scrub and I glimpsed the elevator.c filename on the kernel dump
> before I had to hard-reset.

You may want to check the BFQ list, specifically [1]. It seems to be a
bug in BFQ itself and unrelated to btrfs.

-h

[1] https://groups.google.com/forum/#!topic/bfq-iosched/3T0t2JWl3bk