Ibm Aix; Checking Or Changing Timeouts; Linux; Ibm Aix Timeout Settings - HP 6100 Software Manual

IBM AIX

Checking or changing timeouts

AIX requires the disk settings shown in
Table 4 IBM AIX timeout settings
Setting
PR_key_value
Algorithm
hcheck_interval
hcheck_mode
queue_depth
reserve_policy
rw_timeout

Linux

The following configuration recommendations apply to both RedHat and SuSE.
QLogic Driver parameters (failover enabled):
• qdepth = 16
• port_down_retry_count = 30
• login_retry_count = 30
• failover = 1
• load_balancing = 1
• excludemodel = 0x0
• auto_restore = 0xA6
QLogic Driver parameters (single path):
• qdepth = 16
• port_down_retry_count = 64
• login_retry_count = 30
• failover = 1
• load_balancing = 1
• excludemodel = 0x0
• auto_restore = 0xA6
Emulex Driver parameters (single path)
30 Pre-upgrade tasks
Table 4
Value Description
Sets the key value for persistent reservations. Persistent reservations
NA
are not supported.
Sets the load balancing algorithm to fail_over. All I/O uses a single
fail_over path. The remaining paths are in standby mode. The value round_robin
is not supported.
60 Sets the path health feature to check each device every 60 seconds.
Specifies the I/O paths monitored by the path health checking feature:
nonactive nonactive—Checks all I/O paths for Failed status, and checks standby
paths for Used/Opened devices.
8 Sets the queue depth.
Single path Sets the reserve policy to standard SCSI-2 reservations.
60 Sets the read/write timeout to 60 seconds.
for the native multipath drives.