05-22-2008
AIX: chpath command fails
Hi Guys,
i'm having trouble changing the path-priority. Now both priorities are 1 as you can see in the lspath-output.
Any ideas why the chpath command fails?
# chpath -l hdisk3 -p fscsi1 -a priority=10
Method error (/etc/methods/chgdisk):
0514-080 Invalid routine argument detected.
config:
# lspath | grep hdisk3
Enabled hdisk3 fscsi0
Enabled hdisk3 fscsi1
#lspath -El hdisk3 -p fscsi1
scsi_id 0xa11a00 SCSI ID False
node_name 0x5006048c52a51cc9 FC Node Name False
priority 1 Priority True
# lspath -El hdisk3 -p fscsi0
scsi_id 0x3d0600 SCSI ID False
node_name 0x5006048c52a51cc6 FC Node Name False
priority 1 Priority True
# lspv
hdisk3 none None
# lsdev | grep hdisk3
hdisk3 Available 07-08-01 EMC Symmetrix FCP MPIO Raid5
thanx!
Raba
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nice(3) Library Functions Manual nice(3)
Name
nice - set program priority
Syntax
int nice(incr)
int incr;
Description
The scheduling priority of the process is augmented by incr. Positive priorities get less service than normal. Priority 10 is recommended
to users who wish to execute long-running programs without flack from the administration.
Negative increments are ignored except on behalf of the super-user. The priority is limited to the range -20 (most urgent) to 20 (least).
The priority of a process is passed to a child process by For a privileged process to return to normal priority from an unknown state,
should be called successively with arguments -40 (goes to priority -20 because of truncation), 20 (to get to 0), then 0 (to maintain com-
patibility with previous versions of this call).
Environment
In any mode, nice returns -1 and sets on an error. On success, the return value depends on the mode in which your program was compiled.
In POSIX or System V mode, it is the new priority; otherwise, it is zero. Note that, in POSIX and System V mode, -1 can indicate either
success or failure; must be used to determine which.
See Also
nice(1), fork(2), setpriority(2), renice(8)
nice(3)