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When --nolocking is used (by vgs, lvs, pvs): . don't use lvmlockd at all (set use_lvmlockd to 0) . allow lockd VGs to be read When --readonly is used (by vgs, lvs, pvs, vgdisplay, lvdisplay, pvdisplay, lvmdiskscan, lvscan, pvscan, vgcfgbackup): . skip actual lvmlockd locking calls . allow lockd VGs to be read . check that only shared gl/vg locks are being requested (even though the actually locking is being skipped) . check that no LV locks are requested, because no LVs should be activated or used in readonly mode . disable using lvmetad so VGs are read from disk It is important to note the limited commands that accept the --nolocking and --readonly options, i.e. no commands that change/write a VG or change/activate LVs accept these options, only commands that read VGs.
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.