From: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>
To: Pavel <pavel2000@areainter.net>
Cc: linux-raid@vger.kernel.org
Subject: Re: Misbehavior of md-raid RAID on failed NVMe.
Date: Wed, 8 Jun 2022 11:11:08 +0200 [thread overview]
Message-ID: <20220608111108.000037c0@linux.intel.com> (raw)
In-Reply-To: <8b0c4bf1-a165-95ca-9746-8ef7be46092e@areainter.net>
On Wed, 8 Jun 2022 15:52:14 +0700
Pavel <pavel2000@areainter.net> wrote:
> 08.06.2022 15:32, Mariusz Tkaczyk пишет:
> > Hi Pavel,
> > IMO it is not a RAID problem. In this case some part of requests hangs
> > inside nvme driver and raid1d hanged too. It is rather nvme problem not a
> > raid. RAID should handle it well if IO errors are continuously reported.
> >
> > Thanks,
> > Mariusz
>
> Hi,
>
> When we get I/O error on "generic" drive (not NVMe), we get device in
> failed state and degraded array.
> For reasons unknown to me, RAID on NVMe behaves in different way.
Because some IO requests are blocked inside nvme driver and RAID engine hangs
when it tries to flush next requests.
In "It is rather nvme problem" I meant nvme driver in kernel. Sorry for
confusion.
Thanks,
Mariusz
next prev parent reply other threads:[~2022-06-08 9:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-08 3:48 Misbehavior of md-raid RAID on failed NVMe Pavel
2022-06-08 8:32 ` Mariusz Tkaczyk
[not found] ` <8b0c4bf1-a165-95ca-9746-8ef7be46092e@areainter.net>
2022-06-08 9:11 ` Mariusz Tkaczyk [this message]
2022-06-08 16:52 ` Wol
2022-06-08 18:16 ` Pavel
[not found] ` <CAAMCDef5jamJa+um=DSM08CPdzoTvEQuFOdrGo7jiNivrNVbpg@mail.gmail.com>
2022-06-09 6:43 ` Pavel
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