[zfs-discuss] Big mistake adding disks to zpool :-(

Gregor Kopka zfs-discuss at kopka.net
Thu Dec 11 16:56:17 EST 2014


No need to preformat the disks (unless they have been managed by zfs
before, then there might be issues with zfs detecting the old pool on them).

Please post the output of /zpool status/ so we can tell you more.

Gregor

Am 11.12.2014 um 21:04 schrieb Smithies, Russell:
>
> I think I did something silly and attached a lot of extra disks a
> vdevs to a zpool and those disks still contained data (that I don’t
> care about) but I think I should have formatted them first? Half of
> these 70 new disks are showing as “corrupted data”  and “UNAVAIL”, the
> rest are “ONLINE” and “resilvering” so I don’t think I’ve completely
> screwed the pool. All 70 of the original disks look and are “ONLINE”.
>
> At this stage I’m going to give it a few days to recover or is there
> another solution?
>
> Next time I add more disks, what’s the correct procedure? Do I zero
> the disks with dd then format them with parted first?
>
> This is replicated data so it’s not a total loss if I have to rebuild
> the zpool but I’d rather not have to 50TB over the network again.
>
>  
>
> Thanx,
>
>  
>
> Russell
>
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