From: "Bryn M. Reeves" <bmr@redhat.com>
To: device-mapper development <dm-devel@redhat.com>
Cc: John Utz <John.Utz@wdc.com>
Subject: Re: creating a dm-linear.ko in a current kernel.
Date: Tue, 25 Feb 2014 10:53:16 +0000 [thread overview]
Message-ID: <530C761C.5010809@redhat.com> (raw)
In-Reply-To: <8A51900D08212F40B3DE22453052F6980B97CFA3@wdscexmb02>
On 02/24/2014 10:44 PM, John Utz wrote:
> Solved my own issue methinks, the name of the module that i am
> finding in drivers/md/ is linear.ko, not dm-linear.ko. that was
That's the MD linear personality not the device-mapper linear target. It
allows you to build JBOD (concatentation) arrays using the MD RAID
subsystem.
> unexpected. i note further that there are other non 'dm- decorated'
> lkms in md as well, such as multipath, faulty, raid0, etc.
These are also MD personalities.
> is there an implication associated with things decorated with dm- vs
> things not decorated with dm- in the md directory?
The device-mapper targets all have a dm-* prefix (there are other files
in drivers/md with names beginning with 'dm', e.g. dm.c, dm-table.c but
those are part of the device-mapper core).
The dm-linear target is always built into the core dm-mod - see the
Makefile rules in drivers/md/Makefile for details. The device-mapper
bits are right at the top.
Regards,
Bryn.
next prev parent reply other threads:[~2014-02-25 10:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-24 22:01 creating a dm-linear.ko in a current kernel John Utz
2014-02-24 22:44 ` John Utz
2014-02-25 10:53 ` Bryn M. Reeves [this message]
2014-02-25 16:23 ` John Utz
-- strict thread matches above, loose matches on Subject: below --
2014-02-25 21:48 johnstra10
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