From: Alasdair G Kergon <agk@redhat.com>
To: ghudson@MIT.EDU
Cc: linux-lvm@redhat.com
Subject: Re: [linux-lvm] Page cache corruption when creating a snapshot
Date: Fri, 29 Feb 2008 18:31:48 +0000 [thread overview]
Message-ID: <20080229183148.GI1788@agk.fab.redhat.com> (raw)
In-Reply-To: <200802291732.m1THWfD7013248@outgoing.mit.edu>
On Fri, Feb 29, 2008 at 12:32:41PM -0500, ghudson@MIT.EDU wrote:
> The reproduction recipe looks like:
> rm -rf /tmp/test
> mkdir /tmp/test
> # Put around 60MB of files into /tmp/test
> find /tmp/test -type f | xargs md5sum > /tmp/sum.pre
> lvcreate --size 2G --snapshot /dev/dink/gutsy-i386-sbuild --name testsnapshot
> find /tmp/test -type f | xargs md5sum > /tmp/sum.post
Can you do that twice?
find /tmp/test -type f | xargs md5sum > /tmp/sum.post2
and check the two post files are the same?
And add some syncs/blockdev --flushbufs at different places
in the script to see if you can make it go away.
Alasdair
--
agk@redhat.com
next prev parent reply other threads:[~2008-02-29 18:31 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-29 17:32 [linux-lvm] Page cache corruption when creating a snapshot ghudson
2008-02-29 18:31 ` Alasdair G Kergon [this message]
2008-02-29 19:11 ` Greg Hudson
2008-02-29 19:10 ` Bryn M. Reeves
2008-02-29 19:35 ` Greg Hudson
2008-02-29 20:14 ` Alasdair G Kergon
2008-03-04 23:57 ` Greg Hudson
2008-02-29 19:29 ` malahal
2008-02-29 19:53 ` Stuart D. Gathman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20080229183148.GI1788@agk.fab.redhat.com \
--to=agk@redhat.com \
--cc=ghudson@MIT.EDU \
--cc=linux-lvm@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).