Bug 589174
Summary: | fix iscsi/iser functioning and failover time under DM multipath | ||||||
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Product: | Red Hat Enterprise Linux 6 | Reporter: | Or Gerlitz <ogerlitz> | ||||
Component: | kernel | Assignee: | Mike Christie <mchristi> | ||||
Status: | CLOSED CURRENTRELEASE | QA Contact: | Barry Donahue <bdonahue> | ||||
Severity: | high | Docs Contact: | |||||
Priority: | low | ||||||
Version: | 6.0 | CC: | bdonahue, mchristi, qcai, yuji.furui | ||||
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: | 2010-11-11 16:13:49 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: | |||||||
Bug Depends On: | |||||||
Bug Blocks: | 534151 | ||||||
Attachments: |
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Description
Or Gerlitz
2010-05-05 15:08:02 UTC
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux major release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Major release. This request is not yet committed for inclusion. Created attachment 411882 [details] patch that fixes the problem validated with RHEL6 beta (Santiago), kernel 2.6.32-19.el6.x86_64 and DM multipath being device-mapper-multipath-0.4.9-12.el6.x86_64 I added the proposed upstream patches into one patch, its 99% the 3rd patch, the other two are really tiny. [PATCH 1/3] ib/iser: add event handler http://marc.info/?l=linux-rdma&m=127306981509687 [PATCH 2/3] ib/iser: remove buggy back-pointer setting http://marc.info/?l=linux-rdma&m=127306983909726 [PATCH 3/3] ib/iser: enhance disconnection logic for multi-pathing http://marc.info/?l=linux-rdma&m=127306994909954 We can set up multipath to the Equallogic array. This will have to be done manually on a system with multiple NICs. We can't actually bounce the switch port but we could do a cable pull at the NIC. So, I guess we could do it. You actually need infinniband to test it, so the EQL target will not work. You need scsi-target-utils and then 2 boxes with ib cards. We are working closely with the Voltaire guys. They have been testing iser in RHEL6, and this patch was made by them as a result of their testing. They have said they will re-test (they made and tested the patch before they sent it) the patch when it gets merged. (In reply to comment #6) > They have said they will re-test (they made and tested the patch before they > sent it) the patch when it gets merged sure, once we have access to RHEL kernel that has the patch merged, I will test multi-pathing and update here (In reply to comment #8) > Patch(es) available on kernel-2.6.32-29.el6 The latest kernel @ http://people.redhat.com/arozansk/el6 is 2.6.32-19.el6 ... how do I get the -29 kernel? Any feedback from Voltaire on this BZ? (In reply to comment #12) > Any feedback from Voltaire on this BZ? Yes, I tested with -30 (i.e 2.6.32-30.el6) and multi-pathing worked well with iser Red Hat Enterprise Linux 6.0 is now available and should resolve the problem described in this bug report. This report is therefore being closed with a resolution of CURRENTRELEASE. You may reopen this bug report if the solution does not work for you. |