03-04-2014 11:14 AM
Hello dear all,
OS:Solaris 9....server:,Sun-Fire-V890
I have 4 disk group which I should mirror. I added the secondary disks each of them. After that one of this disk group I mirrored .
I mirrored one by one each volume.. e.g. vxassist -b -g oracledg mirror vol1 layout=nostripe e.t.c.
By this way it taking more time.Because there are many volumes.
If I use vxmirror -g diskgroup -a command ,how it would start the mirroring process?
It will start on all volumes or one by one?
Because I am afraid of to be high I/O on disks.And even it will effect performance of system.
This macine is very critic. So I want to be in discuss with you on this question.
Thank you in advance.
Solved! Go to Solution.
03-05-2014 06:51 AM
Hi,
Using vxmirror -a should trigger the mirror creation (in the DG) in a sequential fashion, one at a time
If you fire several vxmirror commands say for different DGs, then you may get syncs in parallel
cheers
tony
03-04-2014 08:35 PM
Hi,
In my experience, if you issue a vxmirror -a , it will take the command for mirroring however at any point if you observe "vxtask list" maximum of 2-3 volumes will be mirrored/synced at a time. Multiple tasks will be queued though however 2-3 will progress at a time. This should have a dependency on number of threads configured for vxconfigd though most people don't tune this variable & keep running as default.
G
03-05-2014 06:51 AM
Hi,
Using vxmirror -a should trigger the mirror creation (in the DG) in a sequential fashion, one at a time
If you fire several vxmirror commands say for different DGs, then you may get syncs in parallel
cheers
tony
03-05-2014 10:30 AM
Thank you all,
Yes Tony.. as you mentioned it is working sequential on each dg.. thank you very much..