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Add this functionality to lvconvert: 'lvconvert --thin cachedLV --thinpool vg/poll' Converts cachedLV to external origin (which will be read-only). New thin volume is created in thinpool LV and it's using external origin as source for unprovisioned chunks. This conversion happens online (while volume is in use). Thin LV remains fully writable. Cached external origin no longer could be written so cache will be used ONLY for read operations. For this limitation we require cache mode to be writethrough (as writeback cannot write to read-only volumes). When thinLV is later removed cached external origin is again fully usable, just note, LV remain in 'read-only' mode. When read-write is needed, 'lvchange -prw' has to be used. Single external origin could be user by multiple thinLV in multiple differen thin pool.
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/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 The source code repository used until 7th June 2012 is accessible here: http://sources.redhat.com/cgi-bin/cvsweb.cgi/LVM2/?cvsroot=lvm2.