Mirroring Disk Drive Question. Using SVM for Disk Mirroring.
Hello,
I am trying to do mirror in solaris 9 using Solaris Volume Manager. I have total 0-7 disks
4 5 6 7
0 1 2 3
Drive 0 and Drive 4 = Boot Drives
Need to Mirror following drives.
Drive 1 and Drive 5 = Need to mirror
Drive 1 was mounted on: /prod1, /prod2, /prod3, /prod4, /prod5.
Drive 5 was mounted on:/prod16--/prod20
Then i have umounted both drives and then using format command to equalize the parititions.
Then
I have done following steps.
metadb -a -f /dev/dsk/c1t1d0s7
metadb -a -f /dev/dsk/c1t5d0s7
2)
metainit -f d100 1 1 c1t1d0s0
metainit -f d101 1 1 c1t5d0s0
metainit d0 -m d100
metattach d0 d101
3)
# newfs /dev/md/rdsk/d0
newfs: /dev/md/rdsk/d0 last mounted as /prod16
newfs: construct a new file system /dev/md/rdsk/d0: (y/n)? y
4)
# mount -F ufs /dev/md/dsk/d0 /prod16
Now, target 5 is submirror with target 1 mirror. I was wanted to do /prod1 but some reason it showing /prod16. How can i change this to /prod1?
OR
2nd question: do i need to mirror each drive vice verse?
for example:
metainit -f d102 1 1 c1t5d0s0
metainit -f d103 1 1 c1t1d0s0
metainit d1 -m d102
metattach d1 d103
Let me know.
Thanks
Adeel
[1349 byte] By [
deal732a] at [2007-11-27 3:01:07]
# 1
I do it a little differently, as follows, which I gleaned from http://slacksite.com/solaris/disksuite/disksuite.html
Create state replicas on slices 6 & 7 (any could be used but we usually use 6/7)
metadb -a -f /dev/dsk/c1t0d0s6
metadb -a /dev/dsk/c1t0d0s7
metadb -a -f /dev/dsk/c1t1d0s6
metadb -a /dev/dsk/c1t1d0s7
Initialize submirrors for root slice 0 on both drives, and create one-way mirror between metadevice d0 & first sub-mirror
metainit -f d10 1 1 c1t1d0s0
metainit -f d20 1 1 c1t1d0s0
metainit d0 -m d10
update root entry in /etc/vfstab
metaroot d0
Initialize submirrors for swap slice on both drives, and create one-way mirror between metadevice d1 & first sub-mirror
metainit -f d11 1 1 c1t0d0s1
metainit -f d21 1 1 c1t1d0s1
metainit d1 -m d11
Initialize submirrors for /var slice5 on both drives, and create one-way mirror between metadevice d5 & first sub-mirror.
metainit -f d15 1 1 c1t0d0s5
metainit -f d20 1 1 c1t1d0s5
metainit d5 -m d15
Edit /etc/vfstab
add these lines to /etc/vfstab
/dev/md/dsk/d1--swap-no-
/dev/md/dsk/d5/dev/md/rdsk/d5/varufs1nologging
REBOOT server
Attach second half of mirrors to allow two drives to synchronize
metattach d0 d20
metattach d1 d21
metattach d2 d25
I hope this helps.
Stephanie
# 2
> 2)
>
> metainit -f d100 1 1 c1t1d0s0
> metainit -f d101 1 1 c1t5d0s0
> metainit d0 -m d100
> metattach d0 d101
>
> 3)
>
> # newfs /dev/md/rdsk/d0
>
> newfs: /dev/md/rdsk/d0 last mounted as /prod16
> newfs: construct a new file system /dev/md/rdsk/d0:
> (y/n)? y
>
> 4)
>
> # mount -F ufs /dev/md/dsk/d0 /prod16
>
> Now, target 5 is submirror with target 1 mirror. I
> was wanted to do /prod1 but some reason it showing
> /prod16. How can i change this to /prod1?
I don't understand your question. You gave the command in step 4 to mount it as prod16. If you want it to be something else, mount it that way.
> OR
>
> 2nd question: do i need to mirror each drive vice
> verse?
>
> for example:
>
>
> metainit -f d102 1 1 c1t5d0s0
> metainit -f d103 1 1 c1t1d0s0
> metainit d1 -m d102
> metattach d1 d103
You've already created metadevices on those slices. You can't place additional metadevices on them. One to a slice.
--
Darren
