From: | Greg Smith <greg(at)2ndquadrant(dot)com> |
---|---|
To: | Mark Kirkwood <mark(dot)kirkwood(at)catalyst(dot)net(dot)nz> |
Cc: | Grzegorz Jaśkiewicz <gryzman(at)gmail(dot)com>, postgres performance list <pgsql-performance(at)postgresql(dot)org> |
Subject: | Re: serveRAID M5014 SAS |
Date: | 2011-05-26 23:19:27 |
Message-ID: | 4DDEDFFF.1060304@2ndquadrant.com |
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Lists: | pgsql-performance |
Mark Kirkwood wrote:
> You can interrogate the config of the card and the raid 10 array using
> the megaraid cli package - you need to read the (frankly terrible)
> manual to discover which switches to use to determine battery and
> cache status etc. If you email me privately I'll get you a link to the
> relevant docs!
That's assuming the MegaCli utility will work against IBM's version of
the card. They use an LSI chipset for the RAID parts, but I don't know
if the card is so similar that it will talk using that utility or not.
The main useful site here is
http://tools.rapidsoft.de/perc/perc-cheat-sheet.html ; here's how to
dump all the main config info from an LSI card:
MegaCli64 -LDInfo -Lall -aALL
You want to see a line like this:
Current Cache Policy: WriteBack, ReadAheadNone, Direct, No Write Cache
if Bad BBU
For the arrays. And then check the battery like this:
MegaCli64 -AdpBbuCmd -aALL
--
Greg Smith 2ndQuadrant US greg(at)2ndQuadrant(dot)com Baltimore, MD
PostgreSQL Training, Services, and 24x7 Support www.2ndQuadrant.us
"PostgreSQL 9.0 High Performance": http://www.2ndQuadrant.com/books
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