From: Patrick Caulfield <caulfield@sistina.com>
To: linux-lvm@sistina.com
Subject: Re: [linux-lvm] read hangs when snapshot gets full
Date: Tue Dec 11 02:27:02 2001 [thread overview]
Message-ID: <20011211082914.GA1181@tykepenguin.com> (raw)
In-Reply-To: <OF4A9F315E.E34E5EC4-ONC1256B1E.00574810@de.ibm.com>
On Mon, Dec 10, 2001 at 06:18:15PM +0100, Martin Petermann wrote:
> Hi all,
>
> I'm using a SuSE Linux (V7.2) with a 2.4.4 kernel. If I start a program
> which reads from a snapshot (e.g. cat /dev/vg/snapshot > /tmp/file) with a
> low priority (nice -20), sometimes the program hangs within the
> read() call if the snapshot gets full. If this is the case I'm not able to
> kill the process of the application (even SIGKILL). In my application I
> reduced the number of blocks in each read() call reads and I stop
> reading after the snapshot is full of more then 90%. But this solution is
> not completely avoiding the problem.
>
> Is there any fix in a newer kernel version?
I think this is fixed in 1.0.1 - it certainly works for me on Linux 2.4.16
patrick
next prev parent reply other threads:[~2001-12-11 2:27 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-10 11:16 [linux-lvm] read hangs when snapshot gets full Martin Petermann
2001-12-11 2:27 ` Patrick Caulfield [this message]
-- strict thread matches above, loose matches on Subject: below --
2001-12-13 5:05 Martin Petermann
2001-12-13 5:46 ` Patrick Caulfield
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