Arno Wagner schrieb:
On Fri, Jan 15, 2010 at 03:17:25AM +0100, Sven Eschenberg wrote:
Arno Wagner schrieb:
On Thu, Jan 14, 2010 at 11:16:29PM +0100, Sven Eschenberg wrote:
Hi Arno,
Concerning udev - you could either modify the configuration for the
scsi subsystem, or you could copy it to you own rule file modify it
and override debian's defaults.
This ways you are a little safer, when the distribution modifies some
rules (for some odd reason) and are sure that dmcrypt returns the
name you expect. In general this is true for most device names where
you have special needs.
On my debian there are no rules for creating /dev/scsi/* names, at
least not for scsi disks. Might be you are stuck with an older udev
or some outdated configuration maybe?
I don't know and do not really have time to investigate now.
Come to think of it, it could also have some connection to a
recent kernel upgrade, I am running 2.6.32.2 from kernel.org.
I did not notice the issue before, so maybe the kernel now also
creates device files and there was something about a device
pseudo filesystem or the like in the patchnotes.
Ah, I guess you unfortunately actiavted kernel managed tmpfs in /dev,
which is an experimental feature. Check for CONFIG_DEVTMPFS in your
kernel config, I bet it is turned on.
Good idea, but no. Must be something in the udev configuration
after all. Not that I found anything. Or anything in the logs.
Hmm. Oh, well. It is not that important. But I really hate this
badly documented obscure "automagical" stuff. As soon as anything
breaks, it really sucks.
On the side of where cryptsetup finds the device for a specific
major and minor number, it is indeed a simple recursive directory
traversal. Unfortunately it is in libdevmapper.c, i.e. in the
system lib of that name. That means it cannot easily be changed.
Arno
Bummer.
And I feel with you, don't get me startet on hal's 'auto-magic' though,
compared to hal udev is pretty well documented *g*.
Doesn't libdevmapper come with the lvm2 package? That makes it indeed a
little difficult to change.
Regards
-Sven
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