8x00 Enterprise Virtual Array updating product software guide (XCS 6.200) (5697-7958, February 2009)

• discovery_threads=1

To check or set Linux parameters, use the set_parm executable found in the /opt/hp/<driver-

specific> directory. When executed, the options to change timeout values are displayed.

NOTE:

• The timeout values must be increased for Emulex single path (without multipath support) and QLogic

single path being used in the environment. This is not only important for online upgrades but for

general data integrity.

• Online controller ﬁrmware upgrades are supported with Linux boot devices.

Solaris

Solaris supports online controller upgrades with the following driver timeouts:

• Sun Drivers (qlc or emlxs): 60 seconds

• QLogic (qla2300) : 60 seconds

• Emulex (lpfc): 60 seconds

Checking or changing timeouts

For Sun drivers, add the following lines to /etc/system ﬁle:

set sd:sd_io_time = 60

set ssd:ssd_io_time = 60

For QLogic, edit the /kernel/drv/qla2300.conf ﬁle and change the hbax-link-down-timeout

value to 60 as follows:

hba0-link-down-timeout=60;

For Emulex, edit the /kernel/drv/lpfc.conf ﬁle and change the linkdown-tmo value to 60

as follows:

linkdown-tmo=60;

Tru64

Tru64 has a 60 second timer for m e d ia command timeouts. In most cases, up to 5 retries can o ccur within

the kernel's I/O stack, which results in a 5–6 minute window before I/O is returned to the ﬁle system. No

changes should be made to any Tru64 settings when performing an online ﬁrmware upgrade.

Online controller ﬁrmware upgrad es are supported in Trucluster 4–node environments where the EVA is

the cluster boot device.

OpenVMS

The limit for LUN timeout is 120 seconds.

NOTE:

OpenVMS handles the controller reboot seen at the conclusion of the ﬁrmware update process. Disks on

the controller display a Mount Verify status during the controller reboot but regain Mounted status and

resume I/O operations upon the completion of the controller reboot. No changes need to be made to

any OpenVMS default settings when performing an online ﬁrmware upgrade.

Online controller ﬁrmware upgrades are supported in OpenVMS cluster environments where the EVA is

the clus

ter boot device.

HP Stora g eWorks 4x00/6x00/8x0 0 Enterprise Virtual Array updating product software guide (XCS 6.200)