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Re: [linux-lvm] Re: LVM on dmraid breakage



On Thu, Aug 02, 2007 at 11:45:53AM +0100, Bryn M. Reeves wrote:
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Luca Berra wrote:
Two things come to mind
1) dmraid should use ioctl BLKPG_DEL_PARTITION, to clean up any eventual
partition table on component devices

2) lvm tool filter could be modified to check if a device has been
already claimed by device-mapper.


But device-mapper already opens devices exclusively when a target claims
them.

No, it does not,
sorry

[root localhost ~]# dmsetup create foobar
0 281329664 linear /dev/md2 0
[root localhost ~]# dmsetup table
foobar: 0 281329664 linear 9:2 0
[root localhost ~]# dmsetup create foobar1
0 281329664 linear /dev/md2 0
[root localhost ~]# dmsetup create foobar2
0 281329664 linear /dev/md2 0
[root localhost ~]# dmsetup create foobar2
0 281329664 linear /dev/md2 0
[root localhost ~]# dmsetup table
foobar3: 0 281329664 linear 9:2 0
foobar2: 0 281329664 linear 9:2 0
foobar1: 0 281329664 linear 9:2 0
foobar: 0 281329664 linear 9:2 0

L.
--
Luca Berra -- bluca comedia it
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