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New systemd services for startup: lvm-devices-wait.service Used in place of systemd-udev-settle, this service waits for udev+pvscan to process PVs listed in system.devices. It runs the command "lvmdevices --wait pvsonline". This only waits for PVs that can be matched to a device in sysfs, so it only waits for devices attached to the system. It waits specifically for the /run/lvm/pvs_online/<pvid> files to be created by pvscan. It quits waiting after a configurable number of seconds. This service gives the first activation service a chance to activate VGs from PVs that are available immediately at startup. lvm-activate-vgs-main.service Calls "vgchange -aay" after lvm-devices-wait to activate complete VGs. It only considers PVs that have been processed by udev+pvscan and have pvs_online files. This is expected to activate VGs from basic devices (not virtual device types) that are present at startup. lvm-activate-vgs-last.service Calls "vgchange -aay" after multipathd has started to activate any more VGs that became available after virtual device services were started, e.g. VGs on multipath devices. Like -main, it only looks at PVs that have been processed by pvscan. This vgchange enables event activation by creating the /run/lvm/event-activation-on file. Event-based activation will activate any further VGs that appear on the system after service (the udev rule will run vgchange -aay <vgname> via a transient service lvm-activate-<vgname>.service.) When there are many VGs that need activation during system startup, the two fixed services can activate them all much faster than activating each VG individually via events. lvm.conf auto_activation_settings can be used to configure the behavior (default ["service_and_event", "pvscan_hints"]). "service_and_event" - the behavior described above, where activation services are used first, and event activation is used afterward. "service_only" - only lvm-activate-vgs-* are used, and no event-based activation occurs after the services finish. (Equivalent to setting lvm.conf event_activation=0.) "event_only" - the lvm-activate-vgs* services are skipped, and all VGs are activated individually with event-based activation. "pvscan_hints" - the vgchange autoactivation commands use pvs_online files created by pvscan. This optimization limits the devices scanned by the vgchange command to only PVs that have been processed by pvscan.
This tree contains the LVM2 and device-mapper tools and libraries. This is development branch, for stable 2.02 release see stable-2.02 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/ 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 using CVS: cvs -d :pserver:cvs@sourceware.org:/cvs/lvm2 login cvs cvs -d :pserver:cvs@sourceware.org:/cvs/lvm2 checkout LVM2 The password is cvs.