Maxim Kozover <maximkoz@xxxxxxxxxxxxxxxx> wrote: > > Hi! (cc's added) > Most of the problem seems to be a QLogic driver problem. > HBAs are connected to target via FC switch. > > 1. If I have several LUNs on each HBA, with QLogic only 1 directory > per adapter (for LUN 0) is created in /sys/class/fc_remote_ports, > while with Emulex a directory for every LUN is created. > > 2. The situation I described occurs with QLogic only if the cable > connecting between HBA and switch is pulled out/in. If I > connect/disconnect the cable between switch and target, disks come > back. > > 3. With Emulex in both cases disks come back. > > However, both with Emulex and QLogic stale directories in > /sys/classfc_remote_ports are left. > For example, with Emulex if I had in the beginning > rport-6:0-0 rport-6:0-1 rport-6:0-2 rport-7:0-0 rport-7:0-1 rport-7:0-2 > then disconnected adapter 7, got > rport-6:0-0 rport-6:0-1 rport-6:0-2 rport-7:0-0 rport-7:0-2 > (7-0-0 and 7-0-2 didn't disappear while 7-0-1 did) > connected 7 back > rport-6:0-0 rport-6:0-1 rport-6:0-2 rport-7:0-2 rport-7:0-4 > rport-7:0-5 rport-7:0-6 > (7-0-0 disappeared, but 7-0-2 is still here). > > Thanks, > > Maxim. > > MK> Hi! > MK> I'm checking 2.6.16-rc5 with 2 QLogic 2312 adapters using qla2xxx > MK> driver from 2.6.16-rc5. > MK> As with earlier kernels, I think > 2.6.12 (since scsi_transport_fc > MK> gained functionality) I have the following problem. > MK> 2 scsi hosts available, 4 and 5 (for QLogic). > MK> I disconnect the cable from one of QLogic cards. After timeout I have > MK> the message > MK> rport-4:0-0: blocked FC remote port time out: removing target and saving binding > MK> and appropriate SCSI devices that came from adapter 4 disappear from > MK> /proc/scsi/scsi. > MK> So far, so good. > MK> I reconnect the cable, the directory > MK> /sys/class/fc_remote_ports/rport-4:0-1 appears along with the old > MK> ones rport-4:0-0 and rport-5:0-0, so currently I have 3. > MK> However, no automatic rescan appears on adapter 4. > MK> What's worse, if I try echo "0 1 0" > /sys/class/scsi_host/host4/scan > MK> the process is stuck. > MK> Please advise. > > MK> Thanks, > > MK> Maxim. > > > - > : send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
