[SOLVED] Partitions in the same zfs pool share the same UUID

[a9udn9u]

My old drive failed, I followed a guide to replace it, since the drives in my pool are partitioned, one of the steps was using `sgdisk` to copy partition info from a healthy drive to the new one, (I guess) that's why the two disks share the same UUID. The failed drive was replaced with `zpool replace` so files should be fine.

I only have one mirrored pool so I can't check if partitions in a proper pool share UUID, can't find reliable answer on Google either. ChatGPT told me they shouldn't share UUID but I'm skeptical about that answer since it can make things up.

Can anyone run the `blkid` command to check if partitions in your pool share the same UUID?

 

[LnxBil]

Yes, the UUID is the same for the two partitions that have the actual zpool on it, but the sub and part uuidis different:

root@proxmox ~ > blkid | grep -Ee 'sd[ab]'
/dev/sda1: PARTUUID="99b0108a-9bcb-4a69-aa66-f51c3f13507d"
/dev/sdb1: PARTUUID="45ecfa8e-c916-4f49-a12b-1be6d76d00e1"
/dev/sda2: UUID="5E72-C120" BLOCK_SIZE="512" TYPE="vfat" PARTUUID="016a6a6b-bac5-4b13-83a1-2d23a9ef2737"
/dev/sdb2: UUID="A378-8DA0" BLOCK_SIZE="512" TYPE="vfat" PARTUUID="e783a40c-422a-4979-a8e0-df3a44bdd980"
/dev/sdb3: LABEL="rpool" UUID="8825829414086323725" UUID_SUB="11895330607541008868" BLOCK_SIZE="8192" TYPE="zfs_member" PARTUUID="1acfeee2-0795-4390-b4b0-3b4e10c9bf64"
/dev/sda3: LABEL="rpool" UUID="8825829414086323725" UUID_SUB="1009680264309797166" BLOCK_SIZE="8192" TYPE="zfs_member" PARTUUID="2241526e-b1a8-4eb0-842f-a44c74c7e357"

 

[a9udn9u]

Yes, the UUID is the same for the two partitions that have the actual zpool on it, but the sub and part uuidis different:

Nice!! Thanks for checking, mine also shows different part UUIDs and subs!