From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Brian King <brking@linux.vnet.ibm.com>
Cc: James.Bottomley@HansenPartnership.com,
martin.petersen@oracle.com, linux-scsi@vger.kernel.org,
tyreld@linux.vnet.ibm.com
Subject: Re: [PATCH 1/1] ibmvfc: Fix I/O hang when port is not mapped
Date: Mon, 19 Sep 2016 16:54:41 -0400 [thread overview]
Message-ID: <yq1oa3j8vam.fsf@sermon.lab.mkp.net> (raw)
In-Reply-To: <20160919135919.689C528041@b01ledav001.gho.pok.ibm.com> (Brian King's message of "Mon, 19 Sep 2016 08:59:19 -0500")
>>>>> "Brian" == Brian King <brking@linux.vnet.ibm.com> writes:
Brian> If a VFC port gets unmapped in the VIOS, it may not respond with
Brian> a CRQ init complete following H_REG_CRQ. If this occurs, we can
Brian> end up having called scsi_block_requests and not a resulting
Brian> unblock until the init complete happens, which may never occur,
Brian> and we end up hanging I/O requests. This patch ensures the host
Brian> action stay set to IBMVFC_HOST_ACTION_TGT_DEL so we move all
Brian> rports into devloss state and unblock unless we receive an init
Brian> complete.
Applied to 4.9/scsi-queue.
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2016-09-19 20:54 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-19 13:59 [PATCH 1/1] ibmvfc: Fix I/O hang when port is not mapped Brian King
2016-09-19 16:14 ` Tyrel Datwyler
2016-09-19 20:54 ` Martin K. Petersen [this message]
2016-09-19 21:21 ` Tyrel Datwyler
2016-09-19 23:51 ` Martin K. Petersen
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