From: Carlos Carvalho <carlos@fisica.ufpr.br>
To: linux-raid@vger.kernel.org
Subject: Re: problem with recovered array
Date: Tue, 31 Oct 2023 16:20:06 -0300 [thread overview]
Message-ID: <ZUFTZnuylkjHNeHu@fisica.ufpr.br> (raw)
In-Reply-To: <CAAMCDed1HMxPzRoikxM9L-zi8m4FvGWDg=jXL=NevZ+tkwiogA@mail.gmail.com>
Roger Heflin (rogerheflin@gmail.com) wrote on Tue, Oct 31, 2023 at 11:19:24AM -03:
> You might also want to look at the io for the sd* devices under the md
> device as that would show what MD is doing under the covers to make
> the io happen (sar and/or iostat).
Exactly. Guess what disks are doing? Nothing! That's the whole point. The
kernel becomes unable to send writes to the disks and the flushd thread remains
using 100% cpu.
Again: this is not an excess of writes that the array cannot cope with. On the
contrary, it's an absence of writes.
next prev parent reply other threads:[~2023-10-31 19:20 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-30 13:35 problem with recovered array eyal
2023-10-30 16:14 ` Roger Heflin
2023-10-31 2:35 ` eyal
2023-10-31 2:50 ` eyal
2023-10-31 3:21 ` Carlos Carvalho
2023-10-31 6:25 ` eyal
2023-10-31 9:29 ` eyal
2023-10-31 10:24 ` Roger Heflin
2023-10-31 21:40 ` eyal
2023-11-01 10:30 ` Roger Heflin
2023-11-01 13:08 ` eyal
2023-11-01 14:29 ` Roger Heflin
2023-11-02 8:34 ` Johannes Truschnigg
2023-11-02 11:27 ` eyal
2023-11-02 11:57 ` Roger Heflin
2023-11-02 13:05 ` eyal
2023-11-02 17:05 ` Roger Heflin
2023-11-02 23:23 ` eyal
2023-11-03 12:08 ` Roger Heflin
2023-11-02 12:29 ` eyal
2023-11-02 12:46 ` Reindl Harald
2023-11-03 14:16 ` Carlos Carvalho
2023-11-03 14:32 ` Dirty page flushing regression in 6.5.x vs 6.1.x Roman Mamedov
2023-11-03 15:57 ` problem with recovered array Roger Heflin
2023-11-03 22:38 ` eyal
2023-11-04 0:48 ` eyal
2023-11-04 1:01 ` Roger Heflin
2023-11-04 10:04 ` eyal
2023-10-31 12:39 ` Carlos Carvalho
2023-10-31 14:19 ` Roger Heflin
2023-10-31 19:20 ` Carlos Carvalho [this message]
2023-10-31 21:44 ` problem with recovered array [more details] eyal
2023-10-31 22:00 ` eyal
2023-11-01 4:31 ` [now urgent] problem with recovered array eyal
2023-11-01 6:44 ` eyal
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