Can anybody help me with this? I've set up a raidz pool using three snv_103
iSCSI targets. After rebooting one of the targets I can't find out to
reconnect it.
It appears that iSCSI has reconnected since iscsiadm and iscsitadm both show
that there is one connection to the target again (after this dropped to 0
during and immediately after the reboot). However, zfs still reports the
device as offline, and format shows the device as unknown.
These are the steps I used to create the targets, initiators and pool, and what
I'm seeing after the reboot:
************************
1. CREATING TARGETS
************************
# format < /dev/null
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c1t0d0 <DEFAULT cyl 1955 alt 2 hd 255 sec 63>
/[EMAIL PROTECTED],0/pci1000,[EMAIL PROTECTED]/[EMAIL PROTECTED],0
1. c1t1d0 <DEFAULT cyl 2046 alt 2 hd 128 sec 32>
/[EMAIL PROTECTED],0/pci1000,[EMAIL PROTECTED]/[EMAIL PROTECTED],0
Specify disk (enter its number):
# zpool create os4pool c1t1d0
# zfs create -V 2g os4pool/volume
# zfs set shareiscsi=on os4pool/volume
cannot share 'os4pool/volume': iscsitgtd failed request to share
Note: despite this error, the target was created fine, and seems to work
perfectly.
************************
2. CREATING POOL
************************
# iscsiadm add discovery-address 192.168.1.208
# iscsiadm add discovery-address 192.168.1.206
# iscsiadm add discovery-address 192.168.1.199
# iscsiadm modify discovery --sendtargets enable
# format < /dev/null
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c1t0d0 <DEFAULT cyl 1955 alt 2 hd 255 sec 63>
/[EMAIL PROTECTED],0/pci1000,[EMAIL PROTECTED]/[EMAIL PROTECTED],0
1. c2t600144F04933FF6C00005056967AC800d0 <SUN-SOLARIS-1-2.00GB>
/scsi_vhci/[EMAIL PROTECTED]
2. c2t600144F04934FAB300005056964D9500d0 <SUN-SOLARIS-1-2.00GB>
/scsi_vhci/[EMAIL PROTECTED]
3. c2t600144F04934119E000050569675FF00d0 <SUN-SOLARIS-1-2.00GB>
/scsi_vhci/[EMAIL PROTECTED]
# zpool create iscsipool raidz c2t600144F04933FF6C00005056967AC800d0
c2t600144F04934FAB300005056964D9500d0 c2t600144F04934119E000050569675FF00d0
At this point I had a fully working pool, I could even share it out over CIFS.
************************
3. AFTER REBOOTING
************************
After I rebooted the iSCSI target, it looked like the iSCSI initiator
reconnected, and this is what I now see on the target:
# iscsitadm list target
Target: os4pool/volume
iSCSI Name: iqn.1986-03.com.sun:02:912a2204-35d8-48ee-8d95-ed504c6fa024
Connections: 1
And on the client:
# iscsiadm list target
Target: iqn.1986-03.com.sun:02:81993fde-b712-65cc-91d3-8b87412f0f23
Alias: os3pool/volume
TPGT: 1
ISID: 4000002a0000
Connections: 1
Target: iqn.1986-03.com.sun:02:912a2204-35d8-48ee-8d95-ed504c6fa024
Alias: os4pool/volume
TPGT: 1
ISID: 4000002a0000
Connections: 1
Target: iqn.1986-03.com.sun:02:16c99162-39f0-60b1-bada-ad6d3ebb6924
Alias: os2pool/volume
TPGT: 1
ISID: 4000002a0000
Connections: 1
However, ZFS and format seem to be having problems with the disk:
# zpool status
pool: iscsipool
state: DEGRADED
status: One or more devices could not be opened. Sufficient replicas exist for
the pool to continue functioning in a degraded state.
action: Attach the missing device and online it using 'zpool online'.
see: http://www.sun.com/msg/ZFS-8000-2Q
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
iscsipool DEGRADED 0 0 0
raidz1 DEGRADED 0 0 0
c2t600144F04933FF6C00005056967AC800d0 ONLINE 0 0 0
c2t600144F04934FAB300005056964D9500d0 UNAVAIL 3 11.7K 0
cannot open
c2t600144F04934119E000050569675FF00d0 ONLINE 0 0 0
errors: No known data errors
# format < /dev/null
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c1t0d0 <DEFAULT cyl 1955 alt 2 hd 255 sec 63>
/[EMAIL PROTECTED],0/pci1000,[EMAIL PROTECTED]/[EMAIL PROTECTED],0
1. c2t600144F04933FF6C00005056967AC800d0 <SUN-SOLARIS-1-2.00GB>
/scsi_vhci/[EMAIL PROTECTED]
2. c2t600144F04934FAB300005056964D9500d0 <drive type unknown>
/scsi_vhci/[EMAIL PROTECTED]
3. c2t600144F04934119E000050569675FF00d0 <SUN-SOLARIS-1-2.00GB>
/scsi_vhci/[EMAIL PROTECTED]
I tried using zpool replace, to see if that would help, but that just gives
this error:
# zpool replace iscsipool c2t600144F04934FAB300005056964D9500d0
cannot open '/dev/dsk/c2t600144F04934FAB300005056964D9500d0': I/O error
Can anybody tell me what I need to do now to get this disk recognised again by
format and zfs?
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