From: Greg Smith <greg@2ndquadrant.com>
To: Mark Kirkwood <mark.kirkwood@catalyst.net.nz>
Cc: Grzegorz Jaśkiewicz <gryzman@gmail.com>
Cc: postgres performance list <pgsql-performance@postgresql.org>
Subject: Re: serveRAID M5014 SAS
Date: Thu, 26 May 2011 19:19:27 -0400
Message-ID: <4DDEDFFF.1060304@2ndquadrant.com> (raw)
In-Reply-To: <4DDE0E77.6070804@catalyst.net.nz>
References: <BANLkTi=fE2YCS0Lra42ei1hFrKqXdVk2jA@mail.gmail.com>
<4DDD81BB.4080801@catalyst.net.nz>
<4DDD85C7.6030109@catalyst.net.nz>
<BANLkTi=PAymQvudx1eyuuOV9vAAoydan9g@mail.gmail.com>
<4DDE0E77.6070804@catalyst.net.nz>
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@2ndQuadrant.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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To: pgsql-performance@postgresql.org
Cc: greg@2ndquadrant.com, mark.kirkwood@catalyst.net.nz, gryzman@gmail.com
Subject: Re: serveRAID M5014 SAS
In-Reply-To: <4DDEDFFF.1060304@2ndquadrant.com>
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