Re: Linux Native Multipath, ASM and Instance Failures

From: Ls Cheng <exriscer_at_gmail.com>
Date: Fri, 27 Jul 2012 11:41:03 +0200
Message-ID: <CAJ2-Qb_gS0EAt1qW3oAEWZ==h62DF02ts77XVxEyWZRqy3uyQg_at_mail.gmail.com>

Hi
Good timing, I was setting up multipath yesterday for 10.2.0.4 ASM on 3PAR and Device Mapper.

I have a doubt, how did you fdisk the disk, did you use /dev/mapper/* or
/dev/sd*? According to 3PAR doco we have to use /dev/sd* but I have always
used /dev/mapper/* then kpartx.

I noticed that in old storage, HP EVA, when I run iostat I can see that all
/dev/sd* corresponding to a /dev/mapper/ have activity but with 3PAR I only
see one of them active, can you try and see if you observe samething? I dont know why it looks like this!

--
LSC


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Received on Fri Jul 27 2012 - 04:41:03 CDT