Based on documentation of the manufacturer: - FlashSystem 820 and FlashSystem 900: http://www.redbooks.ibm.com/redbooks/pdfs/sg248271.pdf vendor "IBM" product "FlashSystem-9840" path_selector "queue-length 0" # Linux 6.2, if available path_grouping_policy multibus path_checker tur rr_min_io_rq 4 # Linux 6.x rr_weight uniform no_path_retry fail failback immediate dev_loss_tmo 300 fast_io_fail_tmo 25 - FlashSystem 710/810/720/820: http://www.ibm.com/support/knowledgecenter/ST2NVR/com.ibm.storage.flashsystem.1.1.doc/rsaa6.pdf vendor "IBM" product "FlashSystem" path_selector "round-robin 0" # Linux 5, Linux 6 path_grouping_policy multibus path_checker tur rr_min_io_rq 4 # 6.x,FlashSystem 720/820 rr_min_io_ 4 # 5.x,FlashSystem 720/820 rr_weight uniform no_path_retry fail failback immediate dev_loss_tmo 300 fast_io_fail_tmo 25 Cc: Hannes Reinecke <hare@xxxxxxx> Cc: Christophe Varoqui <christophe.varoqui@xxxxxxxxxxx> Cc: device-mapper development <dm-devel@xxxxxxxxxx> Signed-off-by: Xose Vazquez Perez <xose.vazquez@xxxxxxxxx> --- libmultipath/hwtable.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/libmultipath/hwtable.c b/libmultipath/hwtable.c index 673148a..6ea20b2 100644 --- a/libmultipath/hwtable.c +++ b/libmultipath/hwtable.c @@ -465,6 +465,18 @@ static struct hwentry default_hw[] = { .pgfailback = 15, .minio = 15, }, + { + /* FlashSystem */ + .vendor = "IBM", + .product = "FlashSystem", + .selector = "queue-length 0", + .pgpolicy = MULTIBUS, + .minio = 4, + .minio_rq = 4, + .no_path_retry = NO_PATH_RETRY_FAIL, + .dev_loss = 300, + .fast_io_fail = 25, + }, /* * IBM Power Virtual SCSI Devices * -- 2.7.4 -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
