Quote:
Originally Posted by bharathyb4u
yes this is the full error message.Some suggested to reboot the server and some suggested to recreate the dac and dar. I dont know how to recreate the dac and dar devices.
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Honestly, the DS4800 device can be a bear to configure. Calling IBM is your best bet.
Otherwise, just running cfgmgr *SHOULD* recreate your DAC devices, but the DS4800 is not a true MPIO array. You have to go into the array firmware and define things, such as the primary path for each LUN. Then, check the attributes on the devices ("lsattr -El hdisk#"). Other than the queue depth, there won't be much to chdev, after a reboot.
Some helpful commands:
Code:
lspv
Displays the information about the physical volumes attached to your system.
fget_config -Av
Should show you your DAR's
lsdev | grep disk
Shows LUN MAC's
lsdev -Ccadapter
Shows FC adapters
fcstat
Status of your FC cards
You can also try these steps:
- umount all SAN-Filesystems
- exportvg all SAN-VG
- rmdev all 4800-hdisks
- rmdev all dar-devices
- rmdev -Rdl all fcs-Adapter
- cfgmgr
But again, know what you're doing first, and I'd STRONGLY suggest contacting IBM.