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A cachevol LV had the CACHE_VOL status flag in metadata, and the cache LV using it had no new flag. This caused problems if the new metadata was used by an old version of lvm. An old version of lvm would have two problems processing the new metadata: . The old lvm would return an error when reading the VG metadata when it saw the unknown CACHE_VOL status flag. . The old lvm would return an error when reading the VG metadata because it would not find an expected cache pool attached to the cache LV (since the cache LV had a cachevol attached instead.) Change the use of flags: . Change the CACHE_VOL flag to be a COMPATIBLE flag (instead of a STATUS flag) so that old versions will not fail when they see it. . When a cache LV is using a cachevol, the cache LV gets a new SEGTYPE flag CACHE_USES_CACHEVOL. This flag is appended to the segtype name, so that old lvm versions will fail to use the LV because of an unknown segtype, as opposed to failing to read the VG.
This tree contains the LVM2 and device-mapper tools and libraries. This is development branch, for stable 2.02 release see 2018-06-01-stable branch. 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://sourceware.org/pub/lvm2/ ftp://sources.redhat.com/pub/lvm2/ https://github.com/lvmteam/lvm2/releases The source code is stored in git: https://sourceware.org/git/?p=lvm2.git git clone git://sourceware.org/git/lvm2.git mirrored to: https://github.com/lvmteam/lvm2 git clone https://github.com/lvmteam/lvm2.git git clone git@github.com:lvmteam/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/lvm-devel 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 Website: https://sourceware.org/lvm2/ Report upstream bugs at: https://bugzilla.redhat.com/enter_bug.cgi?product=LVM%20and%20device-mapper or open issues at: https://github.com/lvmteam/lvm2/issues The source code repository used until 7th June 2012 is accessible here: http://sources.redhat.com/cgi-bin/cvsweb.cgi/LVM2/?cvsroot=lvm2.