Fiberchannel Solaris Part 3: SAN Diagnostics

1. Kernel modules loaded?

Check whether the needed kernel modules/drivers are loaded:


# modinfo|grep fc
93 ffffffffef17d000 19ac0 87 1 fcp (SunFC FCP v20090210-1.134) 94 ffffffffef196000 a2a0 - 1 fctl (SunFC Transport v20090210-1.59)157 ffffffffef3e8000 9620 83 1 fcip (SunFC FCIP v20090210-1.50)160 ffffffffef494850 5610 92 1 fcsm (Sun FC SAN Management v20070116)166 ffffffffef4b5bd8 1fc0 151 1 ippctl (IP Policy Configuration Driver )
The needed modules are printed in bold. The last line just matches because it also contains "fc".

2. Which FC interfaces do I have?

Use "fcinfo":


# fcinfo hba-portHBA

Port WWN: 2100001b321fbd9c OS Device Name: /dev/cfg/c4 Manufacturer: QLogic Corp. Model: 375-3355-01 Firmware Version: 4.04.01 FCode/BIOS Version: BIOS: 1.24; fcode: 1.24; EFI: 1.8; Serial Number: 0402R00-0725369970 Driver Name: qlc Driver Version: 20081115-2.29 Type: N-port State: online Supported Speeds: 1Gb 2Gb 4Gb Current Speed: 4Gb Node WWN: 2000001b321fbd9cHBA Port WWN: 2100001b321fe69b OS Device Name: /dev/cfg/c5 Manufacturer: QLogic Corp. Model: 375-3355-01 Firmware Version: 4.04.01 FCode/BIOS Version: BIOS: 1.24; fcode: 1.24; EFI: 1.8; Serial Number: 0402R00-0725369921 Driver Name: qlc Driver Version: 20081115-2.29 Type: N-port State: online Supported Speeds: 1Gb 2Gb 4Gb Current Speed: 4Gb Node WWN: 2000001b321fe69b

Result: Two ports available, one port per fiberchannel card. The WWPNs are printed in bold.
There's also the port type (N_port in this case) and the current data bit rate.

3. Which WWPNs (storage devices) are seen from my fiberchannel interface ports?

Use "fcinfo remote-port -p" with the interface port WWPN found in step 2:


# fcinfo remote-port -p 2100001b321fbd9c
Remote Port WWN: 210000e08b0d82c6 Active FC4 Types: SCSI,IP SCSI Target: no Node WWN: 200000e08b0d82c6Remote Port WWN: 2100001b321fb79d Active FC4 Types: SCSI,IP SCSI Target: no Node WWN: 2000001b321fb79dRemote Port WWN: 210000d0231c50ab Active FC4 Types: SCSI SCSI Target: yes Node WWN: 200000d0231c50abRemote Port WWN: 220000d0232c50be Active FC4 Types: SCSI SCSI Target: yes Node WWN: 200000d0232c50be

"SCSI" types are storage disks (storage volumes).
"SCSI,IP" types are devices capable of talking IP and SCSI (storage). In this case this is a Solaris host with IP configured.

4. Are all disks configured as solaris disks (usable by Solaris)?

Use "cfgadm -al" (this will configure also newly added fc disks):


# cfgadm -al

5. Is multipathing working?

Use "luxadm display" with the target WWPN of the storage disk device to list the paths:


# luxadm display 220000d0232c50be
DEVICE PROPERTIES for disk: /dev/rdsk/c6t600D0230006C1C4C0C50BE16FF1FE200d0s2 Vendor: ADVUNI Product ID: OXYGENRAID 416F4 Revision: 347B Serial Num: 0C50BE16FF1FE200 Unformatted capacity: 0.000 MBytes Write Cache: Enabled Read Cache: Enabled Minimum prefetch: 0x0 Maximum prefetch: 0xffff Device Type: Disk device Path(s): /dev/rdsk/c6t600D0230006C1C4C0C50BE16FF1FE200d0s2 /devices/scsi_vhci/disk@g600d0230006c1c4c0c50be16ff1fe200:c,raw Controller /dev/cfg/c4 Device Address 220000d0232c50be,2 Host controller port WWN 2100001b321fbd9c Class primary State ONLINE Controller /dev/cfg/c5 Device Address 210000d0231c50be,2 Host controller port WWN 2100001b321fe69b Class primary State ONLINEDEVICE PROPERTIES for disk: /dev/rdsk/c6t600D0230006C1C4C0C50BE4DFE511B00d0s2 Vendor: ADVUNI Product ID: OXYGENRAID 416F4 Revision: 347B Serial Num: 0C50BE4DFE511B00 Unformatted capacity: 715144.000 MBytes Write Cache: Enabled Read Cache: Enabled Minimum prefetch: 0x0 Maximum prefetch: 0xffff Device Type: Disk device Path(s): /dev/rdsk/c6t600D0230006C1C4C0C50BE4DFE511B00d0s2 /devices/scsi_vhci/disk@g600d0230006c1c4c0c50be4dfe511b00:c,raw Controller /dev/cfg/c4 Device Address 220000d0232c50be,1 Host controller port WWN 2100001b321fbd9c Class primary State ONLINE Controller /dev/cfg/c5 Device Address 210000d0231c50be,1 Host controller port WWN 2100001b321fe69b Class primary State ONLINEDEVICE PROPERTIES for disk: /dev/rdsk/c6t600D0230006C1C4C0C50BE57396E9F00d0s2 Vendor: ADVUNI Product ID: OXYGENRAID 416F4 Revision: 347B Serial Num: 0C50BE57396E9F00 Unformatted capacity: 0.000 MBytes Write Cache: Enabled Read Cache: Enabled Minimum prefetch: 0x0 Maximum prefetch: 0xffff Device Type: Disk device Path(s): /dev/rdsk/c6t600D0230006C1C4C0C50BE57396E9F00d0s2 /devices/scsi_vhci/disk@g600d0230006c1c4c0c50be57396e9f00:c,raw Controller /dev/cfg/c4 Device Address 220000d0232c50be,0 Host controller port WWN 2100001b321fbd9c Class primary State ONLINE Controller /dev/cfg/c5 Device Address 210000d0231c50be,0 Host controller port WWN 2100001b321fe69b Class primary State ONLINE

There are three LUNs here: 0,1 and 2; in Solaris "FC Device Address" syntax they are defined as wwpn,lun.