[linux-lvm] Page cache corruption when creating a snapshot
Alasdair G Kergon
agk at redhat.com
Fri Feb 29 18:31:48 UTC 2008
On Fri, Feb 29, 2008 at 12:32:41PM -0500, ghudson at 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 at redhat.com
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