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Thin snapshots having external origins missed the "snapshot" keyword for lv_type field. Also, thin external origins which are thin devices (from another pool) were not recognized properly. For example, external origin itself can be either non-thin volume (lvol0 below) or it can be a thin volume from another pool (lvol3 below): Before this patch: $ lvs -o name,vg_name,attr,pool_lv,origin,layout,type Internal error: Failed to properly detect layout and type for for LV vg/lvol3 Internal error: Failed to properly detect layout and type for for LV vg/lvol3 LV VG Attr Pool Origin Layout Type lvol0 vg ori------- linear external,origin,thin lvol2 vg Vwi-a-tz-- pool lvol0 thin thin lvol3 vg ori---tz-- pool unknown external,origin,thin,thin lvol4 vg Vwi-a-tz-- pool1 lvol3 thin thin pool vg twi-a-tz-- pool,thin pool,thin pool1 vg twi-a-tz-- pool,thin pool,thin - lvol2 as well as lvol4 have missing "snapshot" in type field - lvol3 has unrecognized layout (should be "thin"), but has double "thin" in lv_type which is incorrect - (also there's double "for" in the internal error message) With this patch applied: $ lvs -o name,vg_name,attr,pool_lv,origin,layout,type LV VG Attr Pool Origin Layout Type lvol0 vg ori------- linear external,origin,thin lvol2 vg Vwi-a-tz-- pool lvol0 thin snapshot,thin lvol3 vg ori---tz-- pool thin external,origin,thin lvol4 vg Vwi-a-tz-- pool1 lvol3 thin snapshot,thin pool vg twi-a-tz-- pool,thin pool,thin pool1 vg twi-a-tz-- pool,thin pool,thin
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.