[lvm-devel] master - dmsetup: add warning
Peter Rajnoha
prajnoha at redhat.com
Tue May 27 07:00:50 UTC 2014
On 05/26/2014 11:32 PM, Zdenek Kabelac wrote:
> Gitweb: http://git.fedorahosted.org/git/?p=lvm2.git;a=commitdiff;h=3cb2658fb7ff0bba45e66e79bce8812c819dff52
> Commit: 3cb2658fb7ff0bba45e66e79bce8812c819dff52
> Parent: 6e9105c7bb7f4a1beb34579303670e4510c7d2e6
> Author: Zdenek Kabelac <zkabelac at redhat.com>
> AuthorDate: Mon May 26 22:51:04 2014 +0200
> Committer: Zdenek Kabelac <zkabelac at redhat.com>
> CommitterDate: Mon May 26 22:56:30 2014 +0200
>
> dmsetup: add warning
>
> Warn when --udevcookie/DM_UDEV_COOKIE is used with 'dmsetup remove --force'.
>
> When command is doing multiple ioctl operations on a single device,
> it may invoke udev activity, that is colliding with further ioctl commands.
> The result of such operation becomes unpredictable.
> Use of --retry could partially help...
We could add proper flags to skip all the scanning in udev in case we're
resuming the mapping with error target for the "remove --force"...
--
Peter
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