Bug 593241

Summary:	RFE - Online LUN expansion not mentioned
Product:	Red Hat Enterprise Linux 5	Reporter:	Arnold Sutter <noldi>
Component:	Online_Storage_Reconfiguration_Guide	Assignee:	Don Domingo <ddomingo>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	low
Version:	5.5	CC:	mchristi, revers
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2010-07-13 23:13:21 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Arnold Sutter 2010-05-18 09:52:24 UTC

Description of problem:
Some Storage Arrays support the Online LUN expansion feature (for example HP EVA in a FC SAN Environment with Q-Logic and Emulex HBA's). 

Unfortunately, this feature is not mentioned in the current Online Storage Reconfiguration Guide.

Question: is this feature supported with the current RHEL update release and if yes, why is it not documented in the above guide?

There is at least one other bugzilla Entry on this subject (https://bugzilla.redhat.com/show_bug.cgi?id=450992) that requesting the same feature. 

Version-Release number of selected component (if applicable):
RHEL V5.5


How reproducible:


Steps to Reproduce:
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Actual results:


Expected results:


Additional info:
Please document this feature if Oline LUN expansion it is indeed supported by RHEL 5.

Comment 1 Don Domingo 2010-05-18 22:37:17 UTC

Thanks Arnold. I'll get this documented as soon as I can confirm whether it's supported for any specific RHEL minor updates.

Comment 3 Rob Evers 2010-05-20 19:52:28 UTC

Does this help?

http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/html/Online_Storage_Reconfiguration_Guide/online-iscsi-resizing.html

Comment 4 Arnold Sutter 2010-05-24 19:33:39 UTC

Hi all, 

the link from Rob indeed points to the documetation of online resizing an FC LUN. - I must have overlooked it, sorry about that!

While I'm not sure wether the rescan has to be done on all physical paths, I think it dosn't have adverse effects either. 

Thanks much for your speedy reply & best Regards, 

Arnold

Comment 5 Rob Evers 2010-05-24 19:58:43 UTC

(In reply to comment #4)
> Hi all, 
> 
> the link from Rob indeed points to the documetation of online resizing an FC
> LUN. - I must have overlooked it, sorry about that!
> 
> While I'm not sure wether the rescan has to be done on all physical paths, I
> think it dosn't have adverse effects either. 
> 

Hi Arnold,

The documentation indicates that each device needs to be re-scanned in section 14.1 under the 'important' message.

I hope this is helpful.

Thanks, Rob

Comment 6 Arnold Sutter 2010-05-24 20:03:14 UTC

Hi Rob, 

great! - I think you may close this "NOTABUG". 

Thanks & Regards, 

Arnold