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* [linux-lvm] RAID-less parity?
@ 2020-07-13 14:34 Janne Heß
  2020-07-14 15:15 ` Gionatan Danti
  2020-07-14 16:05 ` David Teigland
  0 siblings, 2 replies; 5+ messages in thread
From: Janne Heß @ 2020-07-13 14:34 UTC (permalink / raw)
  To: linux-lvm

Hello everyone,

I'm currently testing dm-integrity and its use with LVM.
For RAID 1,5,6 LVM should just be able to recover the RAID when integrity fails (and the block device returns a read error).
However some of my systems are single-disk systems. For those, RAIDs are not possible so I was thinking if LVM has some support for single-PV setups with parity on the same PV.
While this is probably a niche feature right now, I can see other projects like Stratis benefit from the integrity checks provided by dm-integrity (and dm-crypt in the future) to detect (and thanks to parity fix) bit rots.
So is there any way to get a parity setup with the current state of LVM? I was thinking of a RAID-4 with one PV but the current tooling (more specifically lvcreate) doesn't let me do that.

Thanks and regards

^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2020-07-30 20:49 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-07-13 14:34 [linux-lvm] RAID-less parity? Janne Heß
2020-07-14 15:15 ` Gionatan Danti
2020-07-14 16:05 ` David Teigland
2020-07-14 20:32   ` Gionatan Danti
2020-07-30 20:49   ` Janne Heß

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