How to flap a SAN device path without rebooting in Solaris

To flap a failed path just run Note: This will bring up/down that FC SCSI path

luxadm -e forcelip /dev/cfg/c2

Before:
Ap_Id                          Type         Receptacle   Occupant     Condition
c2::500104f0007ef447           tape         connected    configured   failed

After:
Ap_Id                          Type         Receptacle   Occupant     Condition
c2::500104f0007ef447           tape         connected    configured   unknown

If the above dose not work Just run the below procedure

luxadm -e port
/devices/pci@7c0/pci@0/pci@8/SUNW,qlc@0,1/fp@0,0:devctl            CONNECTED
/devices/pci@7c0/pci@0/pci@8/SUNW,qlc@0/fp@0,0:devctl              CONNECTED

Then dump the mapped data

luxadm -e dump_map /devices/pci@7c0/pci@0/pci@8/SUNW,qlc@0/fp@0,0:devctl
Pos  Port_ID Hard_Addr Port WWN         Node WWN         Type
0    62f401  0         50060e80058cab20 50060e80058cab20 0x0  (Disk device)
1    630513  0         50060e8014397e20 50060e8014397e20 0x0  (Disk device)
2    634013  0         50060e8014397f20 50060e8014397f20 0x0  (Disk device)
3    634713  0         2100001b3205d150 2000001b3205d150 0x1f (Unknown Type,Host Bus Adapter)

And last re-run a configure

cfgadm -c configure cx

How to remove SAN devices without rebooting in Solaris

Here are all my devices (local and SAN)

echo | format
Searching for disks...done


AVAILABLE DISK SELECTIONS:
0. c1t0d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w21000004cf835d3a,0
1. c1t1d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w21000004cf4c72b6,0
2. c3t50001FE150061AA9d1 <HP-HSV210-5031 cyl 254 alt 2 hd 128 sec 128>
/pci@8,700000/QLGC,qla@2/fp@0,0/ssd@w50001fe150061aa9,1

let’s offline the LUNs now:

luxadm -e offline /dev/rdsk/c3t50001FE150061AA9d1s2

Quiet straight forward, right ? Now, if you run you should notice all those LUNs are now in an ‘unusable’ state.

cfgadm -al -o show_FCP_dev

Let’s fully unconfigure them:

cfgadm -o unusable_FCP_dev -c unconfigure c3::50001fe150061aa9

And finally, let’s cleanup the devices pathes

devfsadm -C

Note: In a cluster configuration run also

scdidadm -C

All done !! To make sure run the device should not show in format any more.

echo | format
Searching for disks...done


AVAILABLE DISK SELECTIONS:
0. c1t0d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w21000004cf835d3a,0
1. c1t1d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w21000004cf4c72b6,0

Now, you can completely remove those LUNs from the SAN, destroy them on the array,… as far as Solaris is concerned, they don’t exist anymore Want to make them reappear ? Just run ‘cfgadm -c configure’ on the controllers What if you’re running a non Sun volume management software like VxVM ? This was also tested with VxVM 5.0mp1 + DMP instead of MPXIO and it works really well Just make sure to deport those diskgroups and ‘vxdisk offline’ the Vx devices before running the luxadm offline

Another way to offline luns

To clean up the device tree after you remove LUNs The removed devices show up as drive not available in the output of the format command:

413. c3t5006048ACAFE4A7Cd252 <drive not available>
/pci@1d,700000/SUNW,qlc@1,1/fp@0,0/ssd@w5006048acafe4a7c,fc

After the LUNs are unmapped using Array management or the command line, Solaris also displays the devices as either unusable or failing.

bash-3.00# cfgadm -al -o show_SCSI_LUN | grep -i unusable
c2::5006048acafe4a73,256   disk  connected  configured unusable
c3::5006048acafe4a7c,255   disk  connected  configured unusable
 
bash-3.00# cfgadm -al -o show_SCSI_LUN | grep -i failing
c2::5006048acafe4a73,71    disk  connected configured  failing 
c3::5006048acafe4a7c,252   disk  connected configured  failing

If the removed LUNs show up as failing, you need to force a LIP on the HBA.

This operation probes the targets again, so that the device shows up as unusable. Unless the device shows up as unusable, it cannot be removed from the device tree.

luxadm -e forcelip /devices/pci@1d,700000/SUNW,qlc@1,1/fp@0,0:devctl

To remove the device from the cfgadm database

run the following commands on the HBA:

cfgadm -c unconfigure -o unusable_SCSI_LUN c2::5006048acafe4a73
cfgadm -c unconfigure -o unusable_SCSI_LUN c3::5006048acafe4a7c

Repeat step 2 to verify that the LUNs have been removed. Clean up the device tree. The following command removes the /dev/rdsk… links to /devices. $devfsadm -Cv