Online LUN Expand
I run my Suns with a SAN. I just expanded a LUN and now want to use the bigger LUN. The problem is, that the virtual disk is bigger now, but Solaris doesn't recordnize it.
devfsadm, disks or drvconfig doesn't work. Is it possible, that Solaris reads out the new disk-size and puts the new label on to that disk (that seams to be the problem) WITHOUT leaving data?
My system has to stay online and I hope to solve this problem, because for windows that's no problem. Don't tell me that Solaris is not able to work in an open world with modern SAN-Technologies ...?!
My System:
E3500, Solaris 2.6, Veritas Found. S.
SAN:
EMC Clariion
Greatings,
Dirk.
[714 byte] By [
dzee] at [2007-11-25 23:18:49]
# 1
In my experience, Solaris works very well with SAN technologies. It's AIX that has problems. :)
In my environment, I stay away from expanding an existing LUN (outside of Windows servers, that is) and add disk space by presenting additional LUNs.
Then, I run devfsadm to see the new LUNs, and use Veritas VxVM to add the new LUNs to the diskgroup.
It sounds like it's a different way of thinking from what you expected, but I assure you it works.
# 2
Please forgive my question, but I'm only familiar with administering the EMC Symmetrix products, but when you say that you expanded the lun, I'm assuming you grew the lun online and the system still isn't recognizing the changes - as the reply stated - in the label of the disk.
I think the issue will end up being that you're still running on Solaris 2.6, and as the replier had stated, in later versions you can do some of these things online - kind of like you can in AIX with cfgmgr ;) - but Sun didn't catch on until the most current releases of 8 and 9 that this was a real world demand - to be able to unload and reload drivers in system memory and remove and reattach storage after particular parameters have been changed.
In 2.6, I sadly fear, a reconfiguration boot is in your future to be able to see this happen as you probably have to unbind and rebind your HBA to get the - in Solaris' eyes - the newly presented volume to reappear.
I'm not 100% sure as it's been some time, but let's see about the other replies that float in.
