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Mirroring Setup Step


 
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Operating Systems Solaris Mirroring Setup Step
# 1  
Old 10-01-2009
Mirroring Setup Step

Hi gurus

I had 2 hdd, each had 146GB, i want do the mirror for it,
and will mount on /u01

/dev/dsk/c0t1d0s6
/dev/dsk/c1t1d0s6

Can you all help me check or advice if i do the step wrongly,
coz this is my first time for this:
Code:
#metainit d11 1 1 c0t1d0s6
#metainit d12 1 1 c1t1d0s6
#metainit d10 -m d11
#metastat
#metaattach d10 d12
#metastat

Am i need to update in my vfstab?
am i need to restart?

kindly advise

Last edited by SmartAntz; 10-01-2009 at 05:46 AM..
# 2  
Old 10-01-2009
If you are using Solaris 10 or newer, you can forget old style volume management and use zfs instead.
Code:
zpool create d10 mirror c0t1d0s6 c1t1d0s6

and that's it.
No vfstab, no newfs, no growfs, no fsck, no nothing ...
# 3  
Old 10-01-2009
after i run it, it come out an error

Code:
# zpool create d10 mirror c0t1d0s6 c1t1d0s6
invalid vdev specification
use '-f' to override the following errors:
/dev/dsk/c0t1d0s6 contains a ufs filesystem.



---------- Post updated at 06:30 PM ---------- Previous update was at 06:11 PM ----------

Code:
zpool create -f d10 mirror c0t1d0s6 c1t1d0s6

i had success use above command to create a mirror disk

---------- Post updated at 07:11 PM ---------- Previous update was at 06:30 PM ----------

Code:
#metainit d11 1 1 c0t1d0s6
#metainit d12 1 1 c1t1d0s6
#metainit d10 -m d11
#metastat

edit the vfstab

#metattach d10 d12
#metastat

but may i know the above step is it correct?
after that is it need to update in vfstab?

Last edited by SmartAntz; 10-01-2009 at 08:21 AM..
# 4  
Old 10-01-2009
Quote:
Originally Posted by SmartAntz
Hi gurus

I had 2 hdd, each had 146GB, i want do the mirror for it,
and will mount on /u01

/dev/dsk/c0t1d0s6
/dev/dsk/c1t1d0s6

Can you all help me check or advice if i do the step wrongly,
coz this is my first time for this:
Code:
#metainit d11 1 1 c0t1d0s6
#metainit d12 1 1 c1t1d0s6
#metainit d10 -m d11
#metastat
#metaattach d10 d12
#metastat

Am i need to update in my vfstab?
am i need to restart?

kindly advise
If you use ufs you'll need to update vfstab.
If you mirror simple filesystem (not root-filesystem) you do not need to reboot. Create mirror and mount it to mountpoint.
Code:
mount -F ufs /dev/md/dsk/d10 /u01

# 5  
Old 10-01-2009
Is it the ZFS have better IO rate compare with UFS ?
This is because, this file storage in my project is using for heavy IO.
# 6  
Old 10-02-2009
It might. That depends on the IO profile and ZFS tuning/settings. Enabling ZFS compression often improve IO figures.
# 7  
Old 10-02-2009
if i want to switch from ZFS to UFS
is it need to format the disk first before switch to UFS?

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