Slow output from ls and bdf command

[toni osta]

Hi
I have a two nodes RAC CFS Cluster ,
the nodes are RX servers
when i lunch the command ls or ls -ltr also bdf , it take about 1 to 3 minutes to give the output ,
this problem is temporary , after waiting the 3 minutes time and have the output , the second time the output of ls command is immediate
what could cause this problem ?

[Duncan Edmonstone]

are you seeing the error only on CFS filesystems or for all filesystems?

does "bdf -ls" come back quicker?

HTH

Duncan

[toni osta]

Hi
the hanging is going on on the mounted file systems and not on the local)

for the ls command it hangs on the SAN file system (shared CFS file system )

[JASH_2]

Sounds a lot like a SAN communications problem. This could be caused by many things. I would guess, as it is intermittant, that it could be caused by the amount of traffic using the disks/network at any one time. Have you got more than one path to the san and have these been load balanced properly.

Do an ioscan -fnC disk and make sure all the paths are active (CLAIMED) and none are stating NO_HW, which means they have lost connectivity.

Regards,
Jash