From: Matteo Beccati <php@beccati.com>
To: Greg Smith <greg@2ndquadrant.com>
Cc: Ireneusz Pluta <ipluta@wp.pl>
Cc: pgsql-performance@postgresql.org
Subject: Re: 3ware vs. MegaRAID
Date: Wed, 31 Mar 2010 14:43:18 +0200
Message-ID: <4BB34366.2050606@beccati.com> (raw)
In-Reply-To: <4BB23254.2040109@2ndquadrant.com>
References: <4BB1FAAF.7050406@wp.pl>
<4BB23254.2040109@2ndquadrant.com>
On 30/03/2010 19:18, Greg Smith wrote:
> The MegaRAID SAS 84* cards have worked extremely well for me in terms of
> performance and features for all the systems I've seen them installed
> in. I'd consider it a modest upgrade from that 3ware card, speed wise.
> The main issue with the MegaRAID cards is that you will have to write a
> lot of your own custom scripts to monitor for failures using their
> painful MegaCLI utility, and under FreeBSD that also requires using
> their Linux utility via emulation:
> http://www.freebsdsoftware.org/sysutils/linux-megacli.html
Getting MegaCLI to work was a slight PITA, but once it was running it's
been just a matter of adding:
daily_status_mfi_raid_enable="YES"
to /etc/periodic.conf to get the following data in the daily reports:
Adpater: 0
------------------------------------------------------------------------
Physical Drive Information:
ENC SLO DEV SEQ MEC OEC PFC LPF STATE
1 0 0 2 0 0 0 0 Online
1 1 1 2 0 0 0 0 Online
1 2 2 2 0 0 0 0 Online
1 3 3 2 0 0 0 0 Online
1 4 4 2 0 0 0 0 Online
1 5 5 2 0 0 0 0 Online
1 255 248 0 0 0 0 0 Unconfigured(good)
Virtual Drive Information:
VD DRV RLP RLS RLQ STS SIZE STATE NAME
0 2 1 0 0 64kB 69472MB Optimal
1 2 1 3 0 64kB 138944MB Optimal
BBU Information:
TYPE TEMP OK RSOC ASOC RC CC ME
iTBBU 29 C -1 94 93 816 109 2
Controller Logs:
+++ /var/log/mfi_raid_0.today Sun Mar 28 03:07:36 2010
@@ -37797,3 +37797,25 @@
Event Description: Patrol Read complete
Event Data:
None
+
+========================================================================
+seqNum: 0x000036f6
+Time: Sat Mar 27 03:00:00 2010
+
+Code: 0x00000027
+Class: 0
+Locale: 0x20
+Event Description: Patrol Read started
+Event Data:
+ None
etc...
Cheers
--
Matteo Beccati
Development & Consulting - http://www.beccati.com/
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To: pgsql-performance@postgresql.org
Cc: php@beccati.com, greg@2ndquadrant.com, ipluta@wp.pl
Subject: Re: 3ware vs. MegaRAID
In-Reply-To: <4BB34366.2050606@beccati.com>
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