This one is about Solaris Volume Manager and all those meta commands you can think of.. (metadb, metadettach, metattach, metaclear etc)…

Yesterday we had to replace a failed disk that belongs to a mirror. The disk is running in a Sparc Solaris 10 box. It’s a 72GB from Fujitsu

c1t1d0           Soft Errors: 440 Hard Errors: 12 Transport Errors: 124
Vendor: FUJITSU  Product: MAY2073RCSUN72G  Revision: 0501 Serial No: 0711S0935R
Size: 73.40GB <73400057856 bytes>

As you can see from the iostat -En command, the disk is spitting hard errors and must be replaced before it can cause a lot more headache. It’s in c1t1, right.

Here’s what we’re supposed to do:

• we could delete the meta data base that corresponds to the failed disk
• detached the failed disk/slices to the mirror
• clear it
• unconfigure the disk
• replace the disk
• configure the disk
• create new meta device database
• Initialize the disk
• Attached it to mirror
• and sync

Here’s the detailed job:

Info:
metadb | grep c1t1
metadb –d c1t1d0s7

Detach:
metadetach d30 d32
metadetach d40 d42
metadetach d20 d22
metadetach d10 d12

metaclear d32
metaclear d42
metaclear d22
metaclear d12

Verify:
metastat -p | grep c1t1d0
metadb | grep c1t1d0
[root@localhost] /> cfgadm -al
Ap_Id Type Receptacle Occupant Condition
c0 scsi-bus connected configured unknown
c0::dsk/c0t0d0 CD-ROM connected configured unknown
c1 scsi-bus connected configured unknown
c1::dsk/c1t0d0 disk connected configured unknown
c1::dsk/c1t1d0 disk connected configured unknown
c1::dsk/c1t2d0 disk connected configured unknown
c1::dsk/c1t3d0 disk connected configured unknown
usb0/1 unknown empty unconfigured ok
usb0/2 unknown empty unconfigured ok
usb1/1.1 unknown empty unconfigured ok
usb1/1.2 unknown empty unconfigured ok
usb1/1.3 unknown empty unconfigured ok
usb1/1.4 unknown empty unconfigured ok
usb1/2 unknown empty unconfigured ok

Unconfigure:
cfgadm -c unconfigure c1::dsk/c1t1d0

Verify ulit, note the red text above:
cfgadm –al
SWAP DISK

Undo what has been done….

Configure:
cfgadm -c configure c1::dsk/c1t1d0

format (to label disk)

prtvtoc /dev/rdsk/c1t0d0s2 | fmthard -s – /dev/rdsk/c1t1d0s2

metadb -a –c 2 c1t1d0s7

Attach!!

metainit d32 1 1 c1t1d0s6
metainit d42 1 1 c1t1d0s4
metainit d22 1 1 c1t1d0s1
metainit d12 1 1 c1t1d0s0
metattach d30 d32
metattach d40 d42
metattach d20 d22
metattach d10 d12
metastat -p
metadevadm -u c1t1d0

And you’re done! Grab a cup of coffee and wait till the synchronization is done.