HP StorageWorks Enterprise Virtual Array 3000/5000 updating product software guide (VCS 3.110) (5697-7959, 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 increase d 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 b oot 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 media command tim eouts. In most cases, up to 5 retries can occur within
the kernel’s IO 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 a n online firmware upgrade.
Online controller firmware upgrades are suppor ted in Trucluster 4–node environments where the EVA is
the cluster boot device.
Open VMS
The limit for LUN timeout is 120 seconds.
Online controller firmware upgrades are supported in Open VMS cluster environments where the EVA is
the cluster boot device.
IBM AIX
Checking or changing timeouts
AIX requires the disk settings shown in Table 6 for the native multipath drives.
HP StorageWorks Enterprise Virtual Array 3000/5000 updating product software guide (VCS 3.110)
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