To eliminate a race condition that occurs when unlocking one device
depends on the result of unlocking a device before it, the crypt
module must wait for udev to settle between each unlock attempt.
Example
/etc/crypttab:
keyfile /dev/md1 none luks
sda4_crypt /dev/sda4 /dev/mapper/keyfile luks
sdb4_crypt /dev/sdb4 /dev/mapper/keyfile luks
Without this patch, sometimes /dev/sda4 fails to unlock because udev
doesn't have time to create /dev/mapper/keyfile before it's needed.
Prevents following error message:
I: *** Including module: crypt ***
/usr/lib/dracut/modules.d/90crypt/module-setup.sh: line 31: /etc/crypttab: No such file or directory
kernel-tegra is now part of the base kernel package, so bits and pieces
ended up modular, and as a result, if you boot off the internal USB, you
drop to a dracut shell with no way of getting to root.
In the kernel comments PARTUUID is shown using uppercase A-F:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/init/do_mounts.c?id=HEAD#n183
However, dracut tries to use the value of PARTUUID directly in
/dev/disks/by-partuuid/ which expects the hex to be lowercase. This will
cause root to never be found, oops!
Fix dracut so it can, like the Kernel, accept either casing.
Untested but I added a hack on my local system that was similar.
$NEWROOT/dev and its submounts should be umounted after we use it.
Otherwise it fails other scripts that umount /sysroot only.
Signed-off-by: WANG Chao <chaowang@redhat.com>
configured_ifaces is a function that returns the names of each interface
that the user wanted configured.
Currently, this is accomplished by reading the list from
/tmp/net.ifaces. But if we want to allow the user to specify an
interface by its MAC address or IP or something, we need a function that
will read the cache and convert the MACs etc. to names.
(Obviously this conversion only works once udev starts, so it will warn
you if you try it too early.)
Harald Hoyer