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path: root/drivers/md/dm-mpath-hp-sw.c
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2008-04-29block: no need to initialize rq->cmd with blk_get_requestFUJITA Tomonori
blk_get_request initializes rq->cmd (rq_init does) so the users don't need to do that. The purpose of this patch is to remove sizeof(rq->cmd) and &rq->cmd, as a preparation for large command support, which changes rq->cmd from the static array to a pointer. sizeof(rq->cmd) will not make sense and &rq->cmd won't work. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Alasdair G Kergon <agk@redhat.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-10-20dm mpath: hp retry if not readyDave Wysochanski
This patch adds retries to the hp hardware handler, and utilizes the MP_RETRY flag of dm-multipath. For now in the hp handler, if we get a pg_init completed with a check condition we just assume we can retry the pg_init command. We make this assumption because of incomplete data on specific check condition code of the HP hardware, and because testing has shown the HP path initialization command to be idempotent. The number of times we retry is settable via the "pg_init_retries" multipath map feature. Signed-off-by: Dave Wysochanski <dwysocha@redhat.com> Acked-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2007-10-20dm mpath: add hp handlerDave Wysochanski
This patch adds the most basic dm-multipath hardware support for the HP active/passive arrays. Signed-off-by: Dave Wysochanski <dwysocha@redhat.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Acked-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>