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Re: How to increase existing size 350GB to 500GB in




On Jan 13, 2013, at 12:48 AM, Azahary Omar <azaharyo yahoo com> wrote:

> Hi,
> 
> For information my environment as below :-
> 
> IBM system p ( p520 )
> Linux 2.6.18-194.el5 #1 SMP Tue Mar 16 22:03:12 EDT 2010 ppc64 ppc64 ppc64 GNU/Linux
> 
> I'm using IBM SAN DS8K storage installed by IBM Storage Engineer. I do mostly DBA task/job.
> 
> Currently my existing allocation almost full, only 1.5GB left at the mount point /u01.
> 
> I need help on how to increase the size from 350GB to 500GB. Appreciate some guideline/steps 
> on how to perform this activity. 
> 
> 
> # df -h
> Filesystem            Size  Used Avail Use% Mounted on
> /dev/mapper/VolGroup00-LogVol00
>                       220G  132G   77G  64% /
> /dev/sda2              99M   18M   77M  19% /boot
> tmpfs                  32G     0   32G   0% /dev/shm
> /dev/mapper/mpath4p1  345G  326G  1.5G 100% /u01 
> 
> mpath4 (3600507630affc39e0000000000000005) dm-2 IBM,2107900
> 
> [size=350G][features=1 queue_if_no_path][hwhandler=0][rw]
> \_ round-robin 0 [prio=4][active]
>  \_ 2:0:0:0 sdc 8:32  [active][ready]
>  \_ 2:0:1:0 sdf 8:80  [active][ready]
>  \_ 3:0:0:0 sdi 8:128 [active][ready]
>  \_ 3:0:1:0 sdl 8:176 [active][ready]
> 
> 
> Thank you very much and regards
> Azahary
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Hello,

Based on my experience. You cannot increase the size. Because your LUN is already configured with 350GB.
> mpath4 (3600507630affc39e0000000000000005) dm-2 IBM,2107900
> 
> [size=350G][features=1 queue_if_no_path][hwhandler=0][rw]
> \_ round-robin 0 [prio=4][active]
>  \_ 2:0:0:0 sdc 8:32  [active][ready]
>  \_ 2:0:1:0 sdf 8:80  [active][ready]
>  \_ 3:0:0:0 sdi 8:128 [active][ready]
>  \_ 3:0:1:0 sdl 8:176 [active][ready]

But, if you really need to increase the size, backup the data, reconfigure the size disk of LUN (mpath4). Contact the storage engineer to resize the LUN. And reinitiate the multipath in your Linux machine. 

Regards,
Adit



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