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тАО12-07-2007 12:50 AM
тАО12-07-2007 12:50 AM
Mirror breaking
We have a rx3600 server with p400 SAS controller ,configured hardware mirror.Now i want to break that hardware mirror and i want to use that hard disk to another VG.please give me the suggestion how to break hardware mirroring in SAS controller.
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тАО12-07-2007 12:55 AM
тАО12-07-2007 12:55 AM
Re: Mirror breaking
just lvreduce -m 0 /dev/vgxx/lvxx /dev/dsk/cxtxdx, vgreduce /dev/vgxx /dev/dsk/cxtxdx
-yut-
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тАО12-07-2007 03:03 AM
тАО12-07-2007 03:03 AM
Re: Mirror breaking
I'm not aware of an option to reduce anything (except spares), but you can delete and recreate.
run "saconfig" without any option to see all possibilities.
Hope this helps!
Regards
Torsten.
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those who understand binary, and those who don't.
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тАО12-08-2007 01:59 AM
тАО12-08-2007 01:59 AM
Re: Mirror breaking
I dont think there is any difference for sas disks when it comes to breaking of mirror.
#lvreduce -m 0 /dev/vgxx/lvolx /dev/dsk/cxtxd0
#vgreduce /dev/vgxx /dev/dsk/cxtxd0
But when you need to replace a failed disk the sasmgr comes into picture.
When a disk fails, and a new disk is put into the same bay that the failed disk came out of, the SAS controller knows it is a different disk by its SAS address. The O/S driver assigns the next available target for the hardware path (viewed with ioscan) and special device file if insf -e is executed. The sasmgr(1M) command must be used with the ├в replace_tgt├в command to replace the special device file used by LVM with the hardware path to the new disk
Best Regards,
Prashanth
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тАО12-09-2007 10:26 PM
тАО12-09-2007 10:26 PM
Re: Mirror breaking
The Smartarray P400 is a hardware RAID controller and you can handle it by sautil and saconfig together with the controller device file like /dev/cissx.
Each created logical drive is presented as a single disk device even it is a hardware mirrored RAID1 or RAID 5 or RAID 6 ... or whatever.
Hope this helps!
Regards
Torsten.
__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.
__________________________________________________
No support by private messages. Please ask the forum!
If you feel this was helpful please click the KUDOS! thumb below!