Hi and sorry for resurrecting this old topic
Wojciech Puchar wrote:
As I mentioned in first email I did have 4 drives, but new host wasnt
able to accept all 4 drives so I gave a shot with 3 drives expecting
that it should work.
1. Base system running on gmirror volume consisting of 4 mirrors booted
up normally in degraded mode with 3 of 4 drives online.
2. /data powered by raidz1 zfs was showing 3 drives, 2 online and 1
faulted. zfs list was showing that volume is unavailable due lack of
you told about having raidz over 4 drives.
so while it reports 2 online and 1 faulted, not 3 online and 1 faulted?
The day after I got new cablings and connected all 4 drives and all
worked like charm.
Point is that raidz1 refused to work in somewhat degraded mode with 3
drives. It showed 1 out of 3 drive as faulted :/
IIRC, I didnt do:
# zpool export tank
It might be source of the problem, but I'm not sure.
So lesson learned: always export your ZFS volumes before doing anything
like that :)
What was wrong when 3 drives were connected? Wasnt supposed to raidz1
survive lack of 1 drive? Or I did something wrong there?
yes it should work normally. in case of raid-z - with just a bit
slower speed according to ZFS theory.
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