QLogic driver setting best practice
From: Yong Huang <yong321_at_yahoo.com>
Date: Mon, 25 Nov 2013 10:15:12 -0800 (PST)
Message-ID: <1385403312.60544.YahooMailNeo_at_web184802.mail.gq1.yahoo.com>
Is there any best practice document for setting up the QLogic HBA qla2xxx driver? On our Red Hat Linux 6, we leave everything except ql2xextended_error_logging at default. But some parameter values, as viewed under /sys/module/qla2xxx/parameters, may not be optimal. For example, qlport_down_retry and ql2xloginretrycount are currently 0.
Date: Mon, 25 Nov 2013 10:15:12 -0800 (PST)
Message-ID: <1385403312.60544.YahooMailNeo_at_web184802.mail.gq1.yahoo.com>
Is there any best practice document for setting up the QLogic HBA qla2xxx driver? On our Red Hat Linux 6, we leave everything except ql2xextended_error_logging at default. But some parameter values, as viewed under /sys/module/qla2xxx/parameters, may not be optimal. For example, qlport_down_retry and ql2xloginretrycount are currently 0.
According to
Configuring device-mapper for CRS/ASM (Doc ID 357472.1)
the recommended value may be 1, while according to
Bug 17580496 : APM DOCS GIVE LINUX 5 INSTRUCTIONS IN THE LINUX 6.3 INSTALL GUIDE
it should be 45. The actual number may be unimportant as long as there're at least a few retries.
Another problem with changing these params is that on Red Hat Linux 6, after I put
options qla2xxx qlport_down_retry=45
in
/etc/modprobe.d/qla2xxx.conf and reboot, the params are still not
changed. I think I need to rebuild initrd/initramfs.
Any comment is appreciated. (Our kernel is 2.6.32-358.18.1.el6.x86_64, driver version 8.04.00.08.06.4-k)
Yong Huang
-- http://www.freelists.org/webpage/oracle-lReceived on Mon Nov 25 2013 - 19:15:12 CET