problem with increase volume disk iscsi

[alireza baghery]

Red Hat
recommends that this type of scan be used *only when necessary*. In
addition, the following restrictions
must be observed when scanning storage interconnects
server is live and do not interupt in services

On Tue, Jan 13, 2015 at 6:35 PM, Fran Garcia <franchu.garcia at gmail.com>
wrote:

> On Tue, Jan 13, 2015 at 1:59 PM, alireza baghery <> wrote:
> > hi
> > i have one redhat 5.9 and add on one disk scsi (fibre)
> > problem:
> > when we increase volume disk (from 100G to 500G) iscsi in (hp p2000) do
> not
> > see change on redhat
> > i execute echo "- - -">/sys/class/fc_host/host2/scan
> > and rescan-script-bus.sh
> > but یdoes not anythong change
> > how to solve problem
>
> By reading the fine documentation :-)
>
> https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/5/pdf/Online_Storage_Reconfiguration_Guide/Red_Hat_Enterprise_Linux-5-Online_Storage_Reconfiguration_Guide-en-US.pdf
>
> · Rescaning the controller won't rescan the disks.
> · You need to instruct the kernel to check for block changes in the disk:
> echo 1 > /sys/block/sdX/device/rescan
>
> if you're using multipath, you'll need to iterate through  each
> individual path, and the reconfigure the multipatah device with
> multipathd -k"resize mpathX"
>
> cheers
>
> ~f
>
> --
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