Re: LVM RAID1 thin-pool shows “alignment incons istency” warnings

Dne 18. 09. 25 v 21:07 Alessandro Brega napsal(a):
> Hello everyone,
> 
> on a new debian trixie server (kernel 6.12.43-1, lvm2 2.03.31-2) I’m
> trying to set up an LVM RAID-1 thin-pool with these commands:
> 
> pvcreate /dev/nvme0n1p5
> pvcreate /dev/nvme1n1p5
> vgcreate nvme /dev/nvme0n1p5 /dev/nvme1n1p5
> lvcreate --type raid1 --mirrors 1 --name thin_raid1_data --size 100G nvme
> lvcreate --type raid1 --mirrors 1 --name thin_raid1_metadata --size 100MiB nvme
> lvconvert --yes --thin-pool nvme/thin_raid1_data --poolmetadata
> nvme/thin_raid1_metadata
> lvrename nvme/thin_raid1_data nvme/thin_raid1
> 
> The thin pool is created successfully and works as expected, but the
> kernel logs warnings such as:
> 
> device-mapper: table: 253:4: adding target device (start sect 0 len
> 209715200) caused an alignment inconsistency


Hi

Recently solved in kernel - see this patch:

"dm-raid: don't set io_min and io_opt for raid1"

https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux.git/+/a86556264696b797d94238d99d8284d0d34ed960


Regards


Zdenek