experimenting with dmraid - disk status
Sandra Escandor
sescandor at evertz.com
Mon May 2 19:19:45 UTC 2011
After I installed the dmeventd package, I notice the following:
(general setup: ICH10R controller, raid0+1, 4 member disks)
- When I pull out a drive, then run dm_dso_reg_tool -m, the section
"Error Events Recorded by Kernel" for the superset and two subsets are
still 0. Is this expected?
- (Drive still physically disconnected) when I run dmraid -n, the
metadata shows that the status of the disk that I pulled out still has
the same status as the other disks which are plugged in (i.e
disk[0].status: 0x53a is shown for all of the disks, even the one that
I pulled out).
The steps that I took to set up the device mapper raid event monitoring
are basically the same as the one found in: "How to Setup Device Mapper
Raid event Monitoring_0.74.pdf"
(http://sources.redhat.com/lvm2/wiki/DMRAID_Eventing)
EXCEPT:
* I obtained the dmeventd package from the Ubuntu repository (Maverick)
* I didn't install the patch (since I'm using kernel 2.6.35)
* I changed the makefile of libdmraid-events so that it would link with
the pthread library (i.e added -lpthread to the makefile).
Is there another package that I need to install, or have I not set this
up properly?
Thanks for the clarifications,
Sandra
-----Original Message-----
From: Heinz Mauelshagen [mailto:heinzm at redhat.com]
Sent: Friday, April 29, 2011 10:14 AM
To: Sandra Escandor
Subject: RE: experimenting with dmraid - disk status
On Fri, 2011-04-29 at 08:00 -0400, Sandra Escandor wrote:
> I forgot to mention my metadata type. Yes, I'm using Intel software
raid
> (so it's in isw format). Where would I be able to get this plugin?
You should get them with any distros dmraid-events package.
Heinz
>
> Thanks,
> Sandra
>
> -----Original Message-----
> From: ataraid-list-bounces at redhat.com
> [mailto:ataraid-list-bounces at redhat.com] On Behalf Of Heinz
Mauelshagen
> Sent: Friday, April 29, 2011 3:58 AM
> To: ataraid-list at redhat.com
> Subject: Re: experimenting with dmraid - disk status
>
> On Thu, 2011-04-28 at 09:30 -0400, Sandra Escandor wrote:
> > Hello,
> >
> >
> >
> > I was doing a bit of experimenting with dmraid. What I have done is
to
> > create a raid0+1 array, and then physically pull one of the disks
out.
> > I then use the command "dmraid -n" to look at the metadata on the
> > member disks. I notice that the member disk listed by the output
that
> > has the specific serial number of the disk that I pulled, whose
status
> > I expect to be different from the other disks listed, still has the
> > same status as the other still physically plugged in. (i.e
> > disk[0].status: 0x53a is shown for all of the disks, even the one
that
> > I pulled out). Is this normal?
>
> Yes, unless it's isw format, where a plugin exists to update the
> metadata.
>
> Heinz
>
> >
> >
> >
> > The following is the output of "dmraid -V":
> >
> > dmraid version: 1.0.0.rc16 (2009.09.16) shared
> >
> > dmraid library version: 1.0.0.rc16 (2009.09.16)
> >
> > device-mapper version: 4.13.0
> >
> >
> >
> > Thanks for clarifying,
> >
> > Sandra
> >
> >
> > _______________________________________________
> > Ataraid-list mailing list
> > Ataraid-list at redhat.com
> > https://www.redhat.com/mailman/listinfo/ataraid-list
>
>
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