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From: Martin Wilck <mwilck@suse.com>
To: He Zhe <zhe.he@windriver.com>, Christoph Hellwig <hch@lst.de>,
	jack@suse.cz, Jens Axboe <axboe@kernel.dk>,
	viro@zeniv.linux.org.uk, bvanassche@acm.org,
	keith.busch@intel.com, tglx@linutronix.de, yuyufen@huawei.com,
	linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: disk revalidation updates and OOM
Date: Wed, 11 Mar 2020 16:11:28 +0100	[thread overview]
Message-ID: <47735babf2f02ce85e9201df403bf3e1ec5579d6.camel@suse.com> (raw)
In-Reply-To: <209f06496c1ef56b52b0ec67c503838e402c8911.camel@suse.com>

On Wed, 2020-03-11 at 11:29 +0100, Martin Wilck wrote:
> On Mon, 2020-03-02 at 11:55 +0800, He Zhe wrote:
> > Hi,
> > 
> > Since the following commit
> > https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?h=for-5.5/disk-revalidate&id=6917d0689993f46d97d40dd66c601d0fd5b1dbdd
> > until now(v5.6-rc4),
> > 
> > If we start udisksd service of systemd(v244), systemd-udevd will
> > scan
> > /dev/hdc
> > (the cdrom device created by default in qemu(v4.2.0)). systemd-
> > udevd
> > will
> > endlessly run and cause OOM.
> 
> I've tried to reproduce this, but so far I haven't been able to.
> Perhaps because the distro 5.5.7 kernel I've tried (which contains
> the
> offending commit 142fe8f) has no IDE support - the qemu IDE CD shows
> up
> as sr0, with the ata_piix driver. I have systemd-udevd 244. Enabling
> udisksd makes no difference, the system runs stably. ISO images can
> be "ejected" and loaded, single uevents are received and processed.
> 
> Does this happen for you if you use ata_piix?

I have enabled the ATA drivers on my test system now, and I still don't
see the issue. "hd*" for CDROM devices has been marked deprecated in
udev since 2009 (!).

Is it possible that you have the legacy udisksd running, and didn't
disable CD-ROM polling?

Martin



  reply	other threads:[~2020-03-11 15:11 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-02  3:55 He Zhe
2020-03-04 13:37 ` Jan Kara
2020-03-04 16:26   ` Christoph Hellwig
2020-03-07 14:29     ` Christoph Hellwig
2020-03-08 11:00       ` He Zhe
2020-03-10  7:40 ` Christoph Hellwig
2020-03-10 15:30   ` He Zhe
2020-03-10 16:26     ` Christoph Hellwig
2020-03-11  4:03       ` He Zhe
2020-03-11 15:54         ` Christoph Hellwig
2020-03-16 11:01           ` He Zhe
2020-03-16 11:37             ` Christoph Hellwig
2020-03-17  8:50               ` He Zhe
2020-03-17 12:42                 ` Christoph Hellwig
2020-03-18  6:33                   ` He Zhe
2020-03-11 10:29 ` Martin Wilck
2020-03-11 15:11   ` Martin Wilck [this message]
2020-03-16 11:02     ` He Zhe
2020-03-16 11:17       ` Martin Wilck
2020-03-17  8:51         ` He Zhe

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