----- "Antonio da Silva Martins Junior" <asmartins@xxxxxx> escreveu:
> De: "Antonio da Silva Martins Junior" <asmartins@xxxxxx>
> Para: centos@xxxxxxxxxx
> Enviadas: Quinta-feira, 13 de Outubro de 2011 15:58:34 (GMT-0300) Auto-Detected
> Assunto: pvresize on a cLVM
>
> Hi,
>
> I'm needing to expand a LUN on my EMC CX4-120 SAN. (Well I already
> had done it).
>
> On this LUN I had a PV of a cLVM VG. Know I need to run pvresize on
> it.
>
> Has anybody done this on a cLVM PV ?
>
> I'm trying to rescan the devices, but I can't "see" the new size.
> And, googling on it I can only find RHEL5.2 responses.
>
Well, I did it :D
After more search I found this:
http://serverfault.com/questions/66638/how-to-extend-a-san-based-vdisk-in-red-hat-without-rebooting
With this instructions:
1) Increase size of LUN in SAN
2) Check with "multipath -ll" which devices belong to said LUN
3) For each device above, do "echo 1 > /sys/block/sdX/device/rescan"
4) Go to multipath command line with "multipathd -k"
5) For each device, do "del path sdX", "add path sdX" while hoping that
the multipathing functionality works as advertised and fails over properly.
6) "resize map multipath-map-name"
7) Exit multipath command line (Ctrl-D), check with "multipath -ll" that
new size is seen.
8) pvresize, lvextend, resize2fs
9) Profit!
Well, to do steps 4, 5 and 6 on a 10 node cluster will be a litte slow... then I did:
1) Increase size of LUN in SAN
2) Check with "multipath -ll" which devices belong to said LUN
3) For each device above, do "echo 1 > /sys/block/sdX/device/rescan"
4) service multipathd restart
5) pvresize, lvextend, resize2fs
The steps on 3, 4 and 5 where did with cexec (from C3 package).
Works!! Solved!!
Thanks,
Antonio.
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| Antonio S. Martins Jr. - Support Analyst | "Only The Shadow Knows |
| Universidade Estadual de Maringá - Brasil| what evil lurks in the |
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