On 2013-01-10 08:51, Jason wrote:
One of my server's zfs faulted and it shows following:
NAME STATE READ WRITE CKSUM
backup UNAVAIL 0 0 0 insufficient replicas
raidz2-0 UNAVAIL 0 0 0 insufficient replicas
c4t0d0 ONLINE 0 0 0
c4t0d1 ONLINE 0 0 0
c4t0d0 FAULTED 0 0 0 corrupted data
c4t0d3 FAULTED 0 0 0 too many errors
c4t0d4 FAULTED 0 0 0 too many errors
...(omit the rest).
My question is why c4t0d0 appeared twice, and c4t0d2 is missing.
Have check the controller card and hard disk, they are all working fine.
This renaming does seem like an error in detecting (and further naming)
of the disks - i.e. if a connector got loose, and one of the disks is
not seen by the system, the numbering can shift in such manner. It is
indeed strange however that only "d2" got shifted or missing and not
all those numbers after it.
So, you did verify that the controller sees all the disks in "format"
command (and perhaps after a cold reboot - in BIOS)? Just in case, try
to unplug and replug all cables (power, data) in case their pins got
oxydized over time.
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