Sun Storage D1000 Array
 
Sun Storage D2 Array
 
Solaris Cluster
 

PLA-Support>Sun Systems>DISK>Sun Cluster>SN-DK: Cluster
 
.Old GCS Categories>Sun Microsystems>Enterprise Computing>High Availability Clustering
 

Applies to:

Goal

Solution

• If you have SC3.0 you need Solaris 8 HW 02/02 (Update7) or higher
  with 110648-21 () or you need Solaris 9 FCS or higher with 112563-01 ().

In the examples the following configuration was used.

# metastat -p -s nfsset
nfsset/d10 -m nfsset/d11 metaset/d12 1
nfsset/d11 1 1 d49s0
nfsset/d12 1 1 d50s0
# scdidadm -l d50
50       node0:/dev/rdsk/c3t2d0        /dev/did/rdsk/d50
# metadb -s nfsset
flags           first blk       block count
a m     luo   r    16              8192            /dev/did/dsk/d49s7
a       luo   r    16              8192            /dev/did/dsk/d50s7

1.) Change the quorum device if it's on the broken disk. Check the status with

 # scstat -q

Use scsetup to change the quorum device. From the main menu select 1.

 # scsetup 

2.) Identify the broken metadevice and did_instance number.
Use metaset and metastat commands to find the "Maintenance" State of
affected metadevice and did instance number.
Use scdidadm to find the physical device.

 # metaset
 # metastat -s nfsset
 # metastat -p -s nfsset
 # scdidadm -l d50

3.) Preserve the disk label, if needed. When the disk is not readable
use the mirror disk!

 # prtvtoc /dev/rdsk/c3t2d0s2 > /var/tmp/c3t2d0.vtoc

4.) Identify the failed disk drive's physical DID node0 and node 1.

 # scdidadm -o diskid -l d50

5.) Delete metareplicas on that disk

 # metadb -s nfsset -d /dev/did/dsk/d50s7

6.) If hot spare disk is "In Use" go to step 10.

7.) Detach the broken mirror.

 # metadetach -s nfsset -f d10 d12

8.) Preserve metadevice configuration

 # metastat -s nfsset -p > /var/tmp/meta.txt

9.) Delete metadevice

 # metaclear -s nfsset d12

10.) Remove from metaset

 # metaset -s nfsset -d /dev/did/dsk/d50

11.) Unconfigure disk node0 and node 1.

 # cfgadm -c unconfigure c3::dsk/c3t2d0

12.) Physically replace disk !

13.) Configure disk node0 and node 1.

 # cfgadm -c configure c3::dsk/c3t2d0

14.) Update the DID pseudo device on all nodes that have access to the disk.

 # scdidadm -R d50

15.) Verify that the new diskid is in place on all nodes that have access to
the disk.

 # scdidadm -o diskid -l d50

16.) Reconfigure the global devices on all nodes.

 # scgdevs 

17.) Label the disk, if needed.

 # fmthard -s /var/tmp/c3t2d0.vtoc /dev/rdsk/c3t2d0s2

18.) Add disk back to metaset

 # metaset -s nfsset -a /dev/did/dsk/d50

19.) If hot spare disk is "In Use" go to 23.

20.) Check that the metadevice was deleted in step 9. And then re-create it.

 # metastat -s nfsset d12
 # metainit -s nfsset d12 1 1 /dev/did/dsk/d50s0

21.) Re-attach the detached mirror.

 # metattach -s nfsset d10 d12

22.) Go to step 24.

23.) Re-attach the detached mirror.

 # metareplace -s nfsset -e d10 /dev/did/dsk/d50s0

24.) If you want you can move the quorum device back to the old disk location
check the status with

 # scstat -q 

Use scsetup to change the quorum

 # scsetup

22.) Check that everything is ok

 # metastat -s nfsset
 # metadb -s nfsset

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