Public bug reported: ---Problem Description--- vios vfc unmap (vfcmap -vadapter vfchost0 -fcp) can result in no i/o being retried nor device offline. ---uname output--- Linux ubuntu16 4.4.0-9136-generic #55-Ubuntu SMP Fri Aug 26 05:56:24 UTC 2016 ppc64le ppc64le ppc64le GNU/Linux Machine Type = Power8 LPAR ---Steps to Reproduce--- Ubuntu 16.10 lpar with two vfc adapters mapped to SAN Storage and configured with mulitpath. In vios do: vfcmap -vadapter vfchost0 -fcp (where vfchost0 maps to test lpar). multipath -ll and lvm commands hang in linux lpar. tail /var/log/message hangs sometimes. multipath doesn't see failing devices and doesn't mark paths down.
Fyi ... .... the following patch fixes the problem, which is now upstream accepted in the scsi tree as http://git.kernel.org/cgit/linux/kernel/git/mkp/scsi.git/commit/?h=for-next&id=07d0e9a847401ffd2f09bd450d41644cd090e81d ("scsi: ibmvfc: Fix I/O hang when port is not mapped") ** Affects: linux (Ubuntu) Importance: Undecided Assignee: Taco Screen team (taco-screen-team) Status: New ** Tags: architecture-ppc64le bugnameltc-147428 severity-high targetmilestone-inin1610 ** Tags added: architecture-ppc64le bugnameltc-147428 severity-high targetmilestone-inin1610 ** Changed in: ubuntu Assignee: (unassigned) => Taco Screen team (taco-screen-team) ** Package changed: ubuntu => linux (Ubuntu) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1632116 Title: Paths not failed properly when unmapping virtual FC ports in VIOS (using ibmvfc) Status in linux package in Ubuntu: New Bug description: ---Problem Description--- vios vfc unmap (vfcmap -vadapter vfchost0 -fcp) can result in no i/o being retried nor device offline. ---uname output--- Linux ubuntu16 4.4.0-9136-generic #55-Ubuntu SMP Fri Aug 26 05:56:24 UTC 2016 ppc64le ppc64le ppc64le GNU/Linux Machine Type = Power8 LPAR ---Steps to Reproduce--- Ubuntu 16.10 lpar with two vfc adapters mapped to SAN Storage and configured with mulitpath. In vios do: vfcmap -vadapter vfchost0 -fcp (where vfchost0 maps to test lpar). multipath -ll and lvm commands hang in linux lpar. tail /var/log/message hangs sometimes. multipath doesn't see failing devices and doesn't mark paths down. Fyi ... .... the following patch fixes the problem, which is now upstream accepted in the scsi tree as http://git.kernel.org/cgit/linux/kernel/git/mkp/scsi.git/commit/?h=for-next&id=07d0e9a847401ffd2f09bd450d41644cd090e81d ("scsi: ibmvfc: Fix I/O hang when port is not mapped") To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1632116/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
