Red Hat Bugzilla – Bug 238413
[NetApp-S 4.6 feat] iscsi lun resize dosen't take effect without a restart
Last modified: 2010-10-22 10:38:17 EDT
Description of problem: Currently, when resizing a LUN on the filer, from say 40G to 50G, the changes aren't reflected on the host. For example, you started the iscsid daemon and mapped a LUN of size 40G. Then you resize the LUN on the filer to 50G. Now if you reload the iscsi service, still the LUN is reported of size 40G on the host. To get the newly updated size a restart of the iscsid daemon is required which is disruptive is other LUNs are also mapped and mounted. Version-Release number of selected component (if applicable): RHEL4 U4/U5 How reproducible: Very Reproducible Steps to Reproduce: 1. Start the iscsid service mapping a LUN. 2. Now resize the LUN on the filer. 3. Do an iscsi reload on the host. 4. The LUN size reported is still the old size Actual results: The LUN is still reported to be of the older size. Expected results: The new LUN size should be reported on a reload
bug 238414 is a corresponding bug for RHEL 5.1.
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release.
This is dangerously close to moving to RHEL 4.7. This is a non-trivial feature request with little info/business case.
Created attachment 160293 [details] rescan devices Here is a real simple patch, which does the basics. You can either run iscsi-rescan by hand to pick up the size changes or you can run "service iscsi reload". This just echos into the /sys/block/sdX/device/rescan attribute. So the user still needs to do whatever admin task they need to do before rescanning. For example the app may have to reread the new size or the FS may have to be unmounted and remounted.
A fix for this issue should have been included in the packages contained in the RHEL4.6 Beta released on RHN (also available at partners.redhat.com). Requested action: Please verify that your issue is fixed to ensure that it is included in this update release. After you (Red Hat Partner) have verified that this issue has been addressed, please perform the following: 1) Change the *status* of this bug to VERIFIED. 2) Add *keyword* of PartnerVerified (leaving the existing keywords unmodified) If this issue is not fixed, please add a comment describing the most recent symptoms of the problem you are having and change the status of the bug to FAILS_QA. If you cannot access bugzilla, please reply with a message to Issue Tracker and I will change the status for you. If you need assistance accessing ftp://partners.redhat.com, please contact your Partner Manager.
A fix for this issue should have been included in the packages contained in the RHEL4.6-Snapshot1 on partners.redhat.com. Requested action: Please verify that your issue is fixed to ensure that it is included in this update release. After you (Red Hat Partner) have verified that this issue has been addressed, please perform the following: 1) Change the *status* of this bug to VERIFIED. 2) Add *keyword* of PartnerVerified (leaving the existing keywords unmodified) If this issue is not fixed, please add a comment describing the most recent symptoms of the problem you are having and change the status of the bug to FAILS_QA. If you cannot access bugzilla, please reply with a message about your test results to Issue Tracker. If you need assistance accessing ftp://partners.redhat.com, please contact your Partner Manager.
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2007-0810.html