> This is only true if the pool is not protected. Please protect your
> pool with mirroring or raidz*.
>  -- richard
> 

Yes. We use a raidz2 without any spares. In theory, with one disk broken,
there should be no problem. But in reality, we saw NFS service interrupted:

Jun  9 23:28:59 cn03 scsi_vhci: [ID 734749 kern.warning] WARNING: 
vhci_scsi_reset 0x1
Jun  9 23:28:59 cn03 scsi: [ID 365881 kern.info] 
/pci@0,0/pci8086,3410@9/pci1000,72@0 (mpt_sas0):
Jun  9 23:28:59 cn03    Log info 0x31140000 received for target 11.
Jun  9 23:28:59 cn03    scsi_status=0x0, ioc_status=0x8048, scsi_state=0xc

....
....
Truncating similar scsi error
....
....


Jun 10 08:04:38 cn03 svc.startd[9]: [ID 122153 daemon.warning] 
svc:/network/nfs/server:default: Method or service exit timed out.  Killing 
contract 71840.
Jun 10 08:04:38 cn03 svc.startd[9]: [ID 636263 daemon.warning] 
svc:/network/nfs/server:default: Method "/lib/svc/method/nfs-server stop 105" 
failed due to signal KILL.

....
....
Truncating scsi similar error
....
....

Jun 10 09:04:38 cn03 svc.startd[9]: [ID 122153 daemon.warning] 
svc:/network/nfs/server:default: Method or service exit timed out.  Killing 
contract 71855.
Jun 10 09:04:38 cn03 svc.startd[9]: [ID 636263 daemon.warning] 
svc:/network/nfs/server:default: Method "/lib/svc/method/nfs-server stop 105" 
failed due to signal KILL.

This is out of my original assumption when I designed this file box.
But this NFS interruption may **NOT** be due to the degraded zpool although one 
broken disk is almost the only **obvious** event in the night.
I will add a hot spare and enable autoreplace to see if it will happen again.

Thanks.

Fred
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