Re: [CentOS] Re: Shrinking a volume group

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Scott Silva wrote:
Steve Bergman spake the following on 9/13/2006 8:21 AM:
OK.  Now I'm a bit confused.  Raid 1 read performance is not what I
expected.

md does not stripe reads in raid-1. As can be clearly seen on my raid-1 setup on two ide drives:

[root@balrog ~]# hdparm -t /dev/hde

/dev/hde:
 Timing buffered disk reads:  136 MB in  3.01 seconds =  45.17 MB/sec
[root@balrog ~]# hdparm -t /dev/hdg

/dev/hdg:
 Timing buffered disk reads:  126 MB in  3.03 seconds =  41.52 MB/sec
[root@balrog ~]# hdparm -t /dev/md0

/dev/md0:
 Timing buffered disk reads:  124 MB in  3.01 seconds =  41.24 MB/sec
[root@balrog ~]#


--

//Morten Torstensen
//Email: morten@xxxxxxxxxxx
//IM: Cartoon@xxxxxxxxx morten.torstensen@xxxxxxxxx

And if it turns out that there is a God, I don't believe that he is evil.
The worst that can be said is that he's an underachiever.
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