For additional reference, you can refer to lib/SystemImager/Common.pm.
Just search for LABEL. This is something that prepareclient has to do.
Here's the function of interest:
# Usage:
# %array = get_mounted_devs_by_mount_point_array();
# my %mounted_devs_by_mount_point =
# get_mounted_devs_by_mount_point_array();
sub get_mounted_devs_by_mount_point_array {
# Create an array that we can use to put appropriate LABEL and UUID
# info
# into the fstab stanza of the autoinstallscript.conf file. -BEF-
#
my %mounted_devs_by_mount_point;
my $cmd = "mount";
open (FH, "$cmd|") or croak("Couldn't execute $cmd to read the output.");
while (<FH>) {
my ($dev, $on, $mp) = split;
$mounted_devs_by_mount_point{$mp}=$dev;
}
close(FH);
return %mounted_devs_by_mount_point;
}
-Brian
Thus spake Sean Dague ([EMAIL PROTECTED]):
> On Tue, Oct 14, 2003 at 12:18:53AM -0600, dann wrote:
> > On Fri, Oct 10, 2003 at 10:05:40AM -0400, Gary Molenkamp wrote:
> > >
> > > I'm trying to get rid of the hacks in systemconfigurator, but I've hit
> > > this problem.
> > >
> > > When you are calling get_mountinfo to find the boot device, you are doing
> > > a pattern match search for the path as compared to entries in /etc/fstab:
> > >
> > > while(<FSTAB>) {
> > > s/#.*//; ## strip comments
> > > if (m,^\s*(/dev/\S+\d+)\s+$file\s,) {
> > >
> > > However, if the fstab file relies on labels (as is the default install
> > > for redhat/not sure about debian), it will look something like
> > > the following:
> > >
> > > LABEL=/ / ext3 defaults 1 1
> > > LABEL=/boot /boot ext3 defaults 1 2
> > >
> > > The systemconfig will then fail to get the boot device.
> > >
> > > This info can be gleaned from mount in this case.
> >
> > on a normal running system, yes. however, mount just reads /etc/mtab,
> > which is not accurate at the time sc runs.
> >
> > we can assume proc is mounted though, and this information is in
> > /proc/mounts. i wonder if there's an issue with using it instead.
>
> Dann,
>
> Check out lib/Boot/Labels.pm. This was created to do just this for the grub
> device conversion. The iterface isn't as great as I would like, but it does
> get the job done, and will create a mapping of labels to devices to figure
> out this information.
>
> -Sean
>
> --
> __________________________________________________________________
>
> Sean Dague Mid-Hudson Valley
> sean at dague dot net Linux Users Group
> http://dague.net http://mhvlug.org
>
> There is no silver bullet. Plus, werewolves make better neighbors
> than zombies, and they tend to keep the vampire population down.
> __________________________________________________________________
--
---------------------------------------------------------
Brian Elliott Finley Phone: 630.803.8183
GPG: 3FF8 D096 0E0C D3F3 29B7 6518 D20B 1931 10F8 EE52
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