On Mon, Nov 23, 2020 at 6:43 PM Bryn M. Reeves <bmr@xxxxxxxxxx> wrote:
This is a classic (aka CoW/copy-on-write or "thick") snapshot since it
was created with a size (-L 70GB). When creating a thin snapshot you do
not specify a size for the snapshot LV - it consumes space from the
associated thin pool as needed.
Generally you can find information about the LVs on your system using
the "lvs" command. The "Attr" field displays lv attributes including the
volume type - see the NOTES section of 'man lvs' for the meaning of the
values. The lvs report can also show you whether a snapshot is using CoW
or thinp and the amount of data it is consuming.
I have now migrated to thin snapshots:
These are my logical volumes:
# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
fedora vgfedora Vwi-a-tz-- 700.00g pool00 16.61
fedora vgfedora Vwi-a-tz-- 700.00g pool00 16.61
pool00 vgfedora twi-aotz-- 929.75g 12.50 16.61
But I am unable to boot now due to these errors:
Nov 24 10:44:00 localhost.HPNotebook dracut-initqueue[886]: inactive '/dev/vgfedora/pool00' [929.75 GiB] inherit
Nov 24 10:44:00 localhost.HPNotebook dracut-initqueue[886]: inactive '/dev/vgfedora/fedora' [700.00 GiB] inherit
Nov 24 10:44:00 localhost.HPNotebook dracut-initqueue[888]: modprobe: FATAL: Module dm-thin-pool not found in directory /lib/modules/5.8.18-200.fc32.x86_64
Nov 24 10:44:00 localhost.HPNotebook dracut-initqueue[888]: /usr/sbin/modprobe failed: 1
Nov 24 10:44:00 localhost.HPNotebook dracut-initqueue[888]: Can't process LV vgfedora/fedora: thin target support missing from kernel?
I have tried to mark the volumes as active by :
lvchange -kn vgfedora/pool00
lvchange -kn vgfedora/fedora
But no change.
How do I add the
dm-thin-pool module ? I can't even boot.
--
Regards,
Sreyan Chakravarty
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