[SOLVED] quick question about replacing disk ZFS

[killmasta93]

Hi,
Recently changed a disk on my home lab because got an alert of failing disk, i went though the tutorial on replacing a disk with installing grub. the issue im having is when i try to install the grub on the disk i get this

root@prometheus:~# grub-install /dev/sdc
Installing for i386-pc platform.
grub-install: warning: this GPT partition label contains no BIOS Boot Partition; embedding won't be possible.
grub-install: error: filesystem `zfs' doesn't support blocklists.

im going on a limb and say the sdc mirror 1 is using the same partition label as sdd which those two do not have the grub, so if i undestand correclty on a raid 10 the mirror 0 is always the grub and the mirror 1 just data as looking at the partition scheme the others two dont have the same as sda or sdb.

Thank you

This my pool

    NAME                     STATE     READ WRITE CKSUM
    rpool                    DEGRADED     0     0     0
      mirror-0               ONLINE       0     0     0
        sda3                 ONLINE       0     0     0
        sdb3                 ONLINE       0     0     0
      mirror-1               DEGRADED     0     0     0
        2189043043796446516  UNAVAIL      0     0     0  was /dev/sdc1
        sdd                  ONLINE       0     0     0

and my disks

sda         8:0    0   3.7T  0 disk
|-sda1      8:1    0  1007K  0 part
|-sda2      8:2    0   512M  0 part
`-sda3      8:3    0   3.7T  0 part
sdb         8:16   0   3.7T  0 disk
|-sdb1      8:17   0  1007K  0 part
|-sdb2      8:18   0   512M  0 part
`-sdb3      8:19   0   3.7T  0 part
sdc         8:32   0   3.7T  0 disk
|-sdc1      8:33   0   3.7T  0 part
`-sdc9      8:41   0     8M  0 part
sdd         8:48   0   3.7T  0 disk
|-sdd1      8:49   0   3.7T  0 part
`-sdd9      8:57   0     8M  0 part

 

[Stoiko Ivanov]

im going on a limb and say the sdc mirror 1 is using the same partition label as sdd which those two do not have the grub, so if i undestand correclty on a raid 10 the mirror 0 is always the grub and the mirror 1 just data as looking at the partition scheme the others two dont have the same as sda or sdb.

This is correct - PVE configures the first vdev as bootable device (all disks in a RAIDZ{123}, both disks in a RAID1, the first mirror (2 disks) in RAID10)

The choice is made, since without the first (or any other) vdev the pool cannot be imported anyways

I hope this helps!

 

[killmasta93]

Thanks for the reply, just wanted to make sure just in case thank you again