[CentOS] How to force iscsi to see the new LUN size

Peter Blajev pblajev at ucsd.edu
Tue Jan 19 22:53:18 UTC 2010

Pasi Kärkkäinen wrote:
> On Fri, Jan 15, 2010 at 05:34:47PM -0800, Peter Blajev wrote:
>> Hi,
>> I increased the size of one of the LUNs and on CentOS 5.4 if I restart 
>> iscsi (`service iscsi restart`) I'll see the the new size but this will 
>> disconnect all other LUNs.
>> I'm hoping that there is isciadm or some other command that will force 
>> iscsi to rediscover the LUNs but I can't seem to be able to come up with 
>> one.
>> Resize2fs says that there is nothing to be done. I'm not using LVM.
>> Any ideas?
> Try: iscsiadm -m node -R
> It should work with CentOS 5.3 and newer.
> Also you might be interested of this:
> http://pasik.reaktio.net/rhel5-online-iscsi-resize-test.txt
> -- Pasi
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Thank you to all that replied.

I studied and followed the document Pasi provided:

Great step-by-step instructions, right on the point. It worked for me.

Thanks again.


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