Need to know whch disk to pull out.

UNIX Solaris
1

Hi all.
This may be a stupid question but here goes:

I lost a disk on my Sun-Fire 480-r and want to replace it. I don't care about the data, I just need to get a new disk in which I have.

The problem I have is that there are two disks and both have the green lights on them... and I'm not sure which one to pull out. They are in HDD0 and HDD1.

Is there any way I can find out which one I would have to replace aside from pulling one out, rebooting and seeing?

metastat output is as follows:

 
# metastat
d4: Mirror
    Submirror 0: d14
      State: Needs maintenance
    Submirror 1: d24
      State: Needs maintenance
    Pass: 1
    Read option: roundrobin (default)
    Write option: parallel (default)
    Size: 286169472 blocks (136 GB)
d14: Submirror of d4
    State: Needs maintenance
    Invoke: metareplace d4 c2t11d0s6 <new device>
    Size: 286169472 blocks (136 GB)
    Stripe 0:
        Device      Start Block  Dbase        State Reloc Hot Spare
        c2t11d0s6          0     No     Maintenance   Yes
 
d24: Submirror of d4
    State: Needs maintenance
    Invoke: after replacing "Maintenance" components:
                metareplace d4 c3t11d0s6 <new device>
    Size: 286169472 blocks (136 GB)
    Stripe 0:
        Device      Start Block  Dbase        State Reloc Hot Spare
        c3t11d0s6          0     No      Last Erred   Yes
 
d3: Mirror
    Submirror 0: d13
      State: Needs maintenance
    Submirror 1: d23
      State: Needs maintenance
    Pass: 1
    Read option: roundrobin (default)
    Write option: parallel (default)
    Size: 430017408 blocks (205 GB)
d13: Submirror of d3
    State: Needs maintenance
    Invoke: metareplace d3 c2t8d0s0 <new device>
    Size: 430017408 blocks (205 GB)
    Stripe 0: (interlace: 32 blocks)
        Device      Start Block  Dbase        State Reloc Hot Spare
        c2t8d0s0           0     No     Maintenance   Yes
        c2t9d0s0       10176     No     Maintenance   Yes
        c2t10d0s0      10176     No     Maintenance   Yes
 
d23: Submirror of d3
    State: Needs maintenance
    Invoke: after replacing "Maintenance" components:
                metareplace d3 c3t8d0s0 <new device>
    Size: 430017408 blocks (205 GB)
    Stripe 0: (interlace: 32 blocks)
        Device      Start Block  Dbase        State Reloc Hot Spare
        c3t8d0s0           0     No      Last Erred   Yes
        c3t13d0s0      10176     No      Last Erred   Yes
        c3t10d0s0      10176     No      Last Erred   Yes
 
Device Relocation Information:
Device    Reloc Device ID
c3t11d0   Yes   id1,sd@SFUJITSU_MAW3147NCSUN146G000704C0ANVR____DAC0P710ANVR
c2t11d0   Yes   id1,sd@SFUJITSU_MAW3147NCSUN146G000703C0ALDG____DAC0P710ALDG
c3t8d0    Yes   id1,sd@SSEAGATE_ST373307LSUN72G_3HZ68F2S00007416TZS2
c3t13d0   Yes   id1,sd@SFUJITSU_MAW3073NCSUN72G_000806B0PRAS____DAN0P820PRAS
c3t10d0   Yes   id1,sd@SSEAGATE_ST373307LSUN72G_3HZ10FP200007337K0ES
c2t8d0    Yes   id1,sd@SSEAGATE_ST373307LSUN72G_3HZ1279H000073384J6U
c2t9d0    Yes   id1,sd@SSEAGATE_ST373307LSUN72G_3HZ101B100007337JKGR
c2t10d0   Yes   id1,sd@SSEAGATE_ST373307LSUN72G_3HZ10FEG000073386DB6

Here is what was reported from /var/adm/messages at the time we lost the disk:

Jan 23 14:19:52 rcworarpt scsi: [ID 107833 kern.warning] WARNING: /pci@8,600000/pci@1/scsi@5/sd@a,0 (sd25):
Jan 23 14:19:52 rcworarpt       SCSI transport failed: reason 'incomplete': retrying command
Jan 23 14:19:53 rcworarpt scsi: [ID 107833 kern.warning] WARNING: /pci@8,600000/pci@1/scsi@5/sd@a,0 (sd25):
Jan 23 14:19:53 rcworarpt       disk not responding to selection
Jan 23 14:19:53 rcworarpt md_stripe: [ID 641072 kern.warning] WARNING: md: d23: write error on /dev/dsk/c3t10d0s0
Jan 23 14:19:55 rcworarpt scsi: [ID 107833 kern.warning] WARNING: /pci@8,600000/pci@1/scsi@5/sd@a,0 (sd25):
Jan 23 14:19:55 rcworarpt       disk not responding to selection

Thanks in advance for all replies.

2

It seems, your faulted disk is an external Ultra320 SCSI disk (c3t10d0s0, Seagate ST 373307) in an external storage system - please check there. The SunFire V480 uses FC disks as their internal disks and there are the target IDs are 0 and 1 and not >= 8.

3

Thanks for your reply, I found the disk...
Is it safe to assume its the one in the third row labeled 10 with the light blinking beside it?

Given that we are using mirroring I need to know the steps in replacing it.

Can I just detach the mirror, replace the disk and reattach it?

Thanks

4

Replace both the failed disks, one at a time.
cfgadm -c unconfigure <device>
pull out OLD
devfsadm -C -> verify format
plug in NEW
devfsadm -C -> verify format (by right should be auto configured)
use metareplace

If you use metadetach at the beginning, you should use metattach