Hi Andrew! Today I tested disconnecting QLogic port. Adapter 4 is connected via switch to a storage and 3 LUNs are seen via the adapter. Only 1 rport is created (for FCP Target) while in Emulex case there were 3: (Fabric Port, Directory Server and FCP Target, FCP Initiator). # ls /sys/class/fc_remote_ports/ rport-4:0-0 # cat /sys/class/fc_remote_ports/*/roles FCP Target Default dev_loss_tmo is 6 (1+5) while in Emulex case the default was 35. After disconnecting the cable between the HBA and the switch qla2xxx 0000:03:01.0: LOOP DOWN detected (2). rport-4:0-0: blocked FC remote port time out: removing target and saving binding # ls /sys/class/fc_remote_ports/ rport-4:0-0 # cat /sys/class/fc_remote_ports/*/roles unknown Relevant scsi devices are removed from /proc/scsi/scsi. After reconnecting the cable qla2xxx 0000:03:01.0: LIP reset occured (f7f7). qla2xxx 0000:03:01.0: LOOP UP detected (2 Gbps). # ls /sys/class/fc_remote_ports/ rport-4:0-0 # cat /sys/class/fc_remote_ports/*/roles FCP Target However, scsi devices don't reappear in /proc/scsi/scsi. When I issue rescan, the command is stuck echo - - - > /sys/class/scsi_host/host4/scan Please advise. Thanks, Maxim. I'm including /var/log/messages output: # egrep -v 'Vendor|cron' /var/log/messages Mar 2 19:13:49 multipath kernel: QLogic Fibre Channel HBA Driver Mar 2 19:13:49 multipath kernel: GSI 24 sharing vector 0xE9 and IRQ 24 Mar 2 19:13:49 multipath kernel: ACPI: PCI Interrupt 0000:03:01.0[A] -> GSI 48 (level, low) -> IRQ 233 Mar 2 19:13:49 multipath kernel: qla2xxx 0000:03:01.0: Found an ISP2312, irq 233, iobase 0xffffc20000004000 Mar 2 19:13:49 multipath kernel: qla2xxx 0000:03:01.0: Configuring PCI space... Mar 2 19:13:49 multipath kernel: qla2xxx 0000:03:01.0: Configure NVRAM parameters... Mar 2 19:13:49 multipath kernel: qla2xxx 0000:03:01.0: Verifying loaded RISC code... Mar 2 19:13:49 multipath kernel: qla2xxx 0000:03:01.0: Waiting for LIP to complete... Mar 2 19:13:51 multipath kernel: qla2xxx 0000:03:01.0: LIP reset occured (f7f7). Mar 2 19:13:51 multipath kernel: qla2xxx 0000:03:01.0: LOOP UP detected (2 Gbps). Mar 2 19:13:51 multipath kernel: qla2xxx 0000:03:01.0: Topology - (F_Port), Host Loop address 0xffff Mar 2 19:13:52 multipath kernel: scsi4 : qla2xxx Mar 2 19:13:52 multipath kernel: qla2xxx 0000:03:01.0: Mar 2 19:13:52 multipath kernel: QLogic Fibre Channel HBA Driver: 8.01.04-k Mar 2 19:13:52 multipath kernel: QLogic QLA2340 - Mar 2 19:13:52 multipath kernel: ISP2312: PCI-X (133 MHz) @ 0000:03:01.0 hdma-, host#=4, fw=3.03.18 IPX Mar 2 19:13:52 multipath kernel: GSI 25 sharing vector 0x32 and IRQ 25 Mar 2 19:13:52 multipath kernel: ACPI: PCI Interrupt 0000:06:01.0[A] -> GSI 72 (level, low) -> IRQ 50 Mar 2 19:13:52 multipath kernel: qla2xxx 0000:06:01.0: Configuring PCI space... Mar 2 19:13:52 multipath kernel: qla2xxx 0000:06:01.0: Configure NVRAM parameters... Mar 2 19:13:52 multipath kernel: Type: Direct-Access ANSI SCSI revision: 05 Mar 2 19:13:52 multipath kernel: SCSI device sdb: 33554432 512-byte hdwr sectors (17180 MB) Mar 2 19:13:52 multipath kernel: sdb: Write Protect is off Mar 2 19:13:52 multipath kernel: SCSI device sdb: drive cache: write through Mar 2 19:13:52 multipath kernel: SCSI device sdb: 33554432 512-byte hdwr sectors (17180 MB) Mar 2 19:13:52 multipath kernel: sdb: Write Protect is off Mar 2 19:13:52 multipath kernel: SCSI device sdb: drive cache: write through Mar 2 19:13:52 multipath kernel: sdb: unknown partition table Mar 2 19:13:52 multipath kernel: sd 4:0:0:0: Attached scsi disk sdb Mar 2 19:13:52 multipath kernel: qla2xxx 0000:06:01.0: Verifying loaded RISC code... Mar 2 19:13:52 multipath kernel: Type: Direct-Access ANSI SCSI revision: 05 Mar 2 19:13:52 multipath scsi.agent[4288]: disk at /devices/pci0000:00/0000:00:02.0/0000:01:00.2/0000:03:01.0/host4/rport-4:0-0/target4:0:0/4:0:0:0 Mar 2 19:13:52 multipath kernel: SCSI device sdc: 67108864 512-byte hdwr sectors (34360 MB) Mar 2 19:13:52 multipath kernel: sdc: Write Protect is off Mar 2 19:13:52 multipath kernel: SCSI device sdc: drive cache: write through Mar 2 19:13:52 multipath kernel: SCSI device sdc: 67108864 512-byte hdwr sectors (34360 MB) Mar 2 19:13:52 multipath kernel: sdc: Write Protect is off Mar 2 19:13:52 multipath kernel: SCSI device sdc: drive cache: write through Mar 2 19:13:52 multipath kernel: sdc: unknown partition table Mar 2 19:13:52 multipath kernel: sd 4:0:0:1: Attached scsi disk sdc Mar 2 19:13:52 multipath kernel: Type: Direct-Access ANSI SCSI revision: 05 Mar 2 19:13:52 multipath kernel: sdd : very big device. try to use READ CAPACITY(16). Mar 2 19:13:52 multipath kernel: SCSI device sdd: 9797894144 512-byte hdwr sectors (5016522 MB) Mar 2 19:13:52 multipath kernel: sdd: Write Protect is off Mar 2 19:13:52 multipath kernel: SCSI device sdd: drive cache: write through Mar 2 19:13:52 multipath kernel: sdd : very big device. try to use READ CAPACITY(16). Mar 2 19:13:52 multipath kernel: SCSI device sdd: 9797894144 512-byte hdwr sectors (5016522 MB) Mar 2 19:13:52 multipath kernel: sdd: Write Protect is off Mar 2 19:13:52 multipath kernel: SCSI device sdd: drive cache: write through Mar 2 19:13:52 multipath scsi.agent[4313]: disk at /devices/pci0000:00/0000:00:02.0/0000:01:00.2/0000:03:01.0/host4/rport-4:0-0/target4:0:0/4:0:0:1 Mar 2 19:13:52 multipath kernel: sdd: unknown partition table Mar 2 19:13:52 multipath kernel: sd 4:0:0:2: Attached scsi disk sdd Mar 2 19:13:52 multipath scsi.agent[4331]: disk at /devices/pci0000:00/0000:00:02.0/0000:01:00.2/0000:03:01.0/host4/rport-4:0-0/target4:0:0/4:0:0:2 Mar 2 19:13:52 multipath kernel: qla2xxx 0000:06:01.0: Waiting for LIP to complete... Mar 2 19:14:12 multipath kernel: qla2xxx 0000:06:01.0: Cable is unplugged... Mar 2 19:14:12 multipath kernel: scsi5 : qla2xxx Mar 2 19:14:12 multipath kernel: qla2xxx 0000:06:01.0: Mar 2 19:14:12 multipath kernel: QLogic Fibre Channel HBA Driver: 8.01.04-k Mar 2 19:14:12 multipath kernel: QLogic QLA2340 - Mar 2 19:14:12 multipath kernel: ISP2312: PCI-X (133 MHz) @ 0000:06:01.0 hdma-, host#=5, fw=3.03.18 IPX Mar 2 19:14:17 multipath kernel: qla2xxx 0000:06:01.0: Unable to retrieve host statistics (65535). Mar 2 19:14:18 multipath last message repeated 19 times Mar 2 19:22:02 multipath kernel: qla2xxx 0000:03:01.0: LOOP DOWN detected (2). Mar 2 19:22:08 multipath kernel: rport-4:0-0: blocked FC remote port time out: removing target and saving binding Mar 2 19:24:04 multipath kernel: qla2xxx 0000:03:01.0: LIP reset occured (f7f7). Mar 2 19:24:04 multipath kernel: qla2xxx 0000:03:01.0: LOOP UP detected (2 Gbps). - : 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
