From: Ioan Nemes (Inemes@fairfieldcity.nsw.gov.au)
Date: Tue Mar 20 2007 - 00:06:49 EST
Greetings,
I have an Sun--Fire 280R (Solaris 8), which runs some Oracle
databases.
-----------------------------------------------------------------------
SunOS sf280r 5.8 Generic_117350-24 sun4u sparc SUNW,Sun-Fire-280R
/u01/oradata is mounted on a metadevice d7 which is a mirrored pair
of two RAID5 (see configuration below). One of the disks failed in
metadevice d47 (`Needs Maintenance`), so I have to replace it.
I am not very familiar with DiskSuite, but I draw up a plan, please
comment and correct me if I am wrong or I missed something:
a) stop database software running, and bring the system in single
user mode;
b) unmount /u01/oradata;
c) edit/rem out the mount point for /u01/oradata in vfstab;
d) metadetech d7 d47 (detach softdisk d47 from d7 - the mirror);
e) metaclear d47 (clear the RAID5 configuration for d47);
f) shutdown the system;
g) replace faulty disk;
h) restart the system in single user mode;
i) run fdisk to format the new disk (c4t9d0), allocate all available
space on the disk to slice 7 (as per current configuration);
j) metainit d47 -r c4t8d0s2 c4t9d0s2 c4t10d0s2 (recreate metadevice
d47);
k) metattach d7 d47 (recreate the mirror);
l) metastst d7 (to see/check the status of d7);
m) recreate the entry for d7 in vfstab and mount /u01/oradata;
n) bring the system in multiuser mode;
o) if everything is OK, restart the RDBMS.
Regards,
Ioan
---------------------------------------
current d7 configuration
---------------------------------------
sf280r@root # metastat d7
d7: Mirror
Submirror 0: d37
State: Okay
Submirror 1: d47
State: Needs maintenance
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 213369984 blocks
d37: Submirror of d7
State: Okay
Size: 213369984 blocks
Stripe 0: (interlace: 128 blocks)
Device Start Block Dbase State Hot Spare
c3t8d0s2 0 No Okay
c3t9d0s2 2889 No Okay
c3t10d0s2 2889 No Okay
d47: Submirror of d7
State: Needs maintenance
Invoke: metareplace d7 c4t9d0s2 <new device>
Size: 213369984 blocks
Stripe 0: (interlace: 128 blocks)
Device Start Block Dbase State Hot Spare
c4t8d0s2 0 No Okay
c4t9d0s2 2889 No Maintenance
c4t10d0s2 2889 No Okay
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