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тАО02-13-2007 11:05 AM
тАО02-13-2007 11:05 AM
MSA30 D-B
I want to setup the second 3 drives on the second channel (B) to mirror the drives on the first channel (A).
How do I do that? I have the mirror software from HP already as I am mirring the two drives in my server.
disk 3 0/4/1/0.0.0 sdisk CLAIMED DEVICE COMPAQ BF07288285
/dev/dsk/c6t0d0 /dev/rdsk/c6t0d0
disk 4 0/4/1/0.1.0 sdisk CLAIMED DEVICE COMPAQ BF07288285
/dev/dsk/c6t1d0 /dev/rdsk/c6t1d0
disk 5 0/4/1/0.2.0 sdisk CLAIMED DEVICE COMPAQ BF07288285
/dev/dsk/c6t2d0 /dev/rdsk/c6t2d0
disk 9 0/4/1/1.0.0 sdisk CLAIMED DEVICE COMPAQ BF07288285
/dev/dsk/c7t0d0 /dev/rdsk/c7t0d0
disk 10 0/4/1/1.1.0 sdisk CLAIMED DEVICE COMPAQ BF07288285
/dev/dsk/c7t1d0 /dev/rdsk/c7t1d0
disk 11 0/4/1/1.2.0 sdisk CLAIMED DEVICE COMPAQ BF07288285
/dev/dsk/c7t2d0 /dev/rdsk/c7t2d0
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тАО02-13-2007 12:54 PM
тАО02-13-2007 12:54 PM
Re: MSA30 D-B
If you wish to keep your data, then expand your array to include the new 3 drives. Once the expansion is complete. You can do a RAID Migration from RAID 5 to RAID 1+0. The first drives from each bus will be mirrored followed by the next one, down the line.
I would set your expansion to High before doing anything.
jk
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тАО02-13-2007 05:37 PM
тАО02-13-2007 05:37 PM
Re: MSA30 D-B
it looks like you are using the disk chassis without a smartarray controller (no problem at all, but different procedure - so the post above does not apply).
The disks on the first channel are
/dev/dsk/c6t0d0
/dev/dsk/c6t1d0
/dev/dsk/c6t2d0
on the second
/dev/dsk/c7t0d0
/dev/dsk/c7t1d0
/dev/dsk/c7t2d0
First find out what disks are in use (vgdisplay -v).
Lets assume you are using the c6... disks in a VG named vg01.
You should create PVs on the "new" disks, e.g.
pvcreate /dev/rdsk/c7t0d0
and add them to your vg01:
vgextend vg01 /dev/dsk/c7t0d0
Now go ahead and mirror the LVOLs:
lvextend -m 1 /dev/vg01/lvol1 /dev/dsk/c7t0d0
and so on.
You may alternatively use physical volume groups instead of specifying each disk while mirroring. See
http://docs.hp.com/en/B2355-60105/lvmpvg.4.html
Hope this helps!
Regards
Torsten.
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тАО02-13-2007 10:41 PM
тАО02-13-2007 10:41 PM
Re: MSA30 D-B
Didn't even see the "software mirror" comment in your question. I thought you were trying to perform a Hardware RAID mirror.
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тАО02-14-2007 04:28 AM
тАО02-14-2007 04:28 AM
Re: MSA30 D-B
I didn├в t know that my MSA30 D-B had a smartarray controller option. Is that an add on option or something that I should have purchased when I bought the MSA30 D-B?
You are right about how the disk drives are configured on the two different channels and the c6├в ┬ж disks are in vg01.
Once I do the pvcreate and add the disks to vg01 then I have to do an lvextend to every volume on vg01 to the new disks. Is there an easier way to do that? I was hopping that I could do it with SAM but couldn├в t find a place to do it.
When I create a new volume I am going to have to manually mirror it too, right? What about when I have to increase the size of a volume?
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тАО02-14-2007 04:46 AM
тАО02-14-2007 04:46 AM
Re: MSA30 D-B
It will work the same way like on Proliant servers - more or less.
Regarding the mirroring:
If you create PVGs, (see again http://docs.hp.com/en/B2355-60105/lvmpvg.4.html )
the command will work like this:
lvextend -m 1 /dev/vg01/lvol1 PVG1
(this has to be configured in /etc/lvmpvg file like
VG vg01
PVG PVG1
/dev/dsk/c7t0d0
/dev/dsk/c7t1d0
/dev/dsk/c7t2d0
PVG PVG2
/dev/dsk/c6t0d0
/dev/dsk/c6t1d0
/dev/dsk/c6t2d0
...
Regarding new lvols:
create new lvols with a zero size, mirror it and then extend it, like
lvextend -L 400 /dev/vg01/lvol3
(this will increase the vg01/lvol3 to 400MB, mirrored)
Hope this helps!
Regards
Torsten.
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those who understand binary, and those who don't.
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тАО02-14-2007 04:56 AM
тАО02-14-2007 04:56 AM
Re: MSA30 D-B
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тАО02-15-2007 11:27 AM
тАО02-15-2007 11:27 AM