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Code uses target driver version for better estimation of max size of COW device for snapshot. The bug can be tested with this script: VG=vg1 lvremove -f $VG/origin set -e lvcreate -L 2143289344b -n origin $VG lvcreate -n snap -c 8k -L 2304M -s $VG/origin dd if=/dev/zero of=/dev/$VG/snap bs=1M count=2044 oflag=direct The bug happens when these two conditions are met * origin size is divisible by (chunk_size/16) - so that the last metadata area is filled completely * the miscalculated snapshot metadata size is divisible by extent size - so that there is no padding to extent boundary which would otherwise save us Signed-off-by:Mikulas Patocka <mpatocka@redhat.com>
This tree contains the LVM2 and device-mapper tools and libraries. For more information about LVM2 read the changelog in the WHATS_NEW file. Installation instructions are in INSTALL. There is no warranty - see COPYING and COPYING.LIB. Tarballs are available from: ftp://sources.redhat.com/pub/lvm2/ The source code is stored in git: http://git.fedorahosted.org/git/lvm2.git git clone git://git.fedorahosted.org/git/lvm2.git Mailing list for general discussion related to LVM2: linux-lvm@redhat.com Subscribe from https://www.redhat.com/mailman/listinfo/linux-lvm Mailing lists for LVM2 development, patches and commits: lvm-devel@redhat.com Subscribe from https://www.redhat.com/mailman/listinfo/linux-lvm lvm2-commits@lists.fedorahosted.org (Read-only archive of commits) Subscribe from https://fedorahosted.org/mailman/listinfo/lvm2-commits Mailing list for device-mapper development, including kernel patches and multipath-tools: dm-devel@redhat.com Subscribe from https://www.redhat.com/mailman/listinfo/dm-devel The source code repository used until 7th June 2012 is accessible here: http://sources.redhat.com/cgi-bin/cvsweb.cgi/LVM2/?cvsroot=lvm2.