Configuring AdvFS parameters

You must change the Tru64 5.1B Unix AdvfsIORetryControl parameter to prevent Tru64 UNIX® advanced file system (AdvFS) from losing access to SAN Volume Controller disks.

As a result of temporary path loss, the AdvFS may lose access to the SAN Volume Controller disks. Therefore, the AdvfsIORetryControl parameter must be changed from its default value of 0. See Figure 1.

Figure 1. Setting the AdvfsIORetryControl parameter

# sysconfig -q advfs AdvfsIORetryControl
advfs:
AdvfsIORetryControl = 0
# sysconfig -r advfs AdvfsIORetryControl=2
# sysconfig -q advfs AdvfsIORetryControl
advfs:
AdvfsIORetryControl = 2

To prevent the AdvfsIORetryControl parameter from resetting after a reboot, enter the parameters in Figure 2.

Figure 2. Example entries to maintain the AdvfsIORetryControl parameter

# sysconfig -q advfs AdvfsIORetryControl > /tmp/advfs.out
# vi /tmp/advfs.out
advfs:
AdvfsIORetryControl=2

# sysconfigdb -af /tmp/advfs.out advfs

-> New entry in the /etc/sysconfigtab


# sysconfig -d advfs
advfs:
AdvfsIORetryControl = 2