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https://www.linuxquestions.org/questions/linux-newbie-8/how-to-cancel-merging-in-lvm-snapshot-target-support-missing-from-kernel-4175449647/
Feb 11, 2013 · # lvchange -ay yourevg/suse-root Can't expand LV suse-root: snapshot target support missing from kernel? it explain every thing. my kernel lack of support for merging since it's "Linux debian 2.6.32-5-686" and merging future added in version 2.6.33.
https://access.redhat.com/solutions/316573
Support for snapshot merging in the kernel is only checked when the merge starts. lvconvert does not check if the kernel supports merging when issuing the --merge option. If the logical volume is not open at the time of the merge, the command will fail. # lvconvert --merge VGNAME/LVSNAPNAME Can't process LV lv_origin: snapshot-merge target ...
https://bugs.centos.org/view.php?id=12426
Hello, thanks for your informations. I tested your instructions (see atached file) When I create a new initramfs "dracut -vf" after I cretated a snapshot with a name with a simple(!) name "lvcreate --snapshot --name snap --size 200m /dev/vgsys/root", the machine boots properly.
https://bugzilla.redhat.com/show_bug.cgi?id=1287940
Bug 1287940 - Creating an LVM snapshot can render the system unbootable. Summary: Creating an LVM snapshot can render the system unbootable ... Can't process LV lv_root-snap: snapshot target support missing from kernel? [ 124.470154] localhost.localdomain dracut-initqueue[258]: PARTIAL MODE. Incomplete logical volumes will be processed.
https://access.redhat.com/solutions/58510
Can I merge an LVM snapshot in Red Hat Enterprise Linux 5? ... Can't process LV lv_name: snapshot-merge target support missing from kernel? Check to see if dmsetup lists snapshot-merge as a target type ... To check if your kernel supports the snapshot merge feature, look for ’snapshot-merge’ in the output of ’dmsetup targets’ ...
https://forums.suse.com/showthread.php?1249-Merging-LVM-Snapshots
Jul 10, 2012 · An LVM Snapshot allows you to see a logical volume as it was when the snapshot was created. As new data is added/changed on the original LV the old data is copied to the snapshot volume. If you access the original LV, you see all the most recent changes. If you access the data via the snapshot volume, you will always see the data as it was when the snapshot was created.
https://www.centos.org/forums/viewtopic.php?t=41176
Jan 25, 2006 · lvm2 snapshots are not supported. Not only by CentOS, but even upstream with the lvm2 developers. we are hoping by the time 4.3 is ready, snapshot support would be added into the distro.
https://www.mjmwired.net/kernel/Documentation/device-mapper/snapshot.txt
Documentation / device-mapper / snapshot.txt. Custom Search Based on kernel version 4.16.1. Page generated on 2018-04-09 11:52 EST. 1 Device-mapper snapshot support 2 ===== 3 4 Device-mapper allows you, without massive ... the corresponding 53 snapshot-origin or snapshot-merge …
https://forums.suse.com/printthread.php?t=1249&pp=10&page=1
Jul 10, 2012 · An LVM Snapshot allows you to see a logical volume as it was when the snapshot was created. As new data is added/changed on the original LV the old data is copied to the snapshot volume. If you access the original LV, you see all the most recent changes.
https://stackoverflow.com/questions/1940093/lvm-snapshot-of-mounted-filesystem
LVM snapshot of mounted filesystem. Ask Question Asked 9 years, 9 months ago. ... I understand that because of kernel buffers and general filesystem activity, data on disk might be in some more-or-less undefined state. ... replace the table with a snapshot-merge target instead of a snapshot target:
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