These are DID_BUS_BUSY errors being reported by the QLogic driver. I would check your SAN for congestion, increase the cache in the EVA, or change the queue depth in your qla2xxx driver. Regards, Wayne. -----Original Message----- From: linux-cluster-bounces@xxxxxxxxxx [mailto:linux-cluster-bounces@xxxxxxxxxx] On Behalf Of FM Sent: Friday, August 10, 2007 9:58 AM To: Redhat Cluster Subject: SAN + multipathd + GFS : SCSI error Hello, All servers are RHEL 4.5 SAN is HP EVA 4000 we are using linux qla modules and multipathd cluster server have only one FC Card In the dmesg of servers connected to GFS we have a lot of : SCSI error : <0 0 1 1> return code = 0x20000 end_request: I/O error, dev sdd, sector 37807111 The cluster seems to work fine but I'd like to know if we can avoid this error. here is a multipathd -ll output : [root@como ~]# multipath -ll mpath1 (3600508b4001051e40000900000310000) [size=500 GB][features="1 queue_if_no_path"][hwhandler="0"] \_ round-robin 0 [prio=50][active] \_ 0:0:0:1 sda 8:0 [active][ready] \_ round-robin 0 [prio=10][enabled] \_ 0:0:1:1 sdd 8:48 [active][ready] mpath3 (3600508b4001051e400009000009e0000) [size=150 GB][features="1 queue_if_no_path"][hwhandler="0"] \_ round-robin 0 [prio=50][active] \_ 0:0:1:2 sde 8:64 [active][ready] \_ round-robin 0 [prio=10][enabled] \_ 0:0:0:2 sdb 8:16 [active][ready] and the device in the multipath.conf devices { device { vendor "HP " product "HSV200 " path_grouping_policy group_by_prio getuid_callout "/sbin/scsi_id -g -u -s /block/%n" path_checker tur path_selector "round-robin 0" prio_callout "/sbin/mpath_prio_alua %d" failback immediate no_path_retry 60 } } -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
