Current dracut network only will be setup when netroot is used. But there are
some cases we need network even without netroot. For example kdump will need
copy vmcore to remote machine via scp or nfs mount. OTOH, if we use dracut as
a recovery system the network is helpful even root is not a network device.
This implementation is based on the manually bring up method. Here add a kernel
cmdline argument rd.neednet. If rd.neednet is set dracut will bring up network
with ifup $INTERFACE -m. If netroot is used we still keep original behavior.
Signed-off-by: Dave Young <dyoung@redhat.com>
fstab-sys will mount nonroot nfs as well, so we need to split the necessary
code from nfsroot to start rpc daemon as hook script.
Signed-off-by: Dave Young <dyoung@redhat.com>
If /etc/fstab.sys does not exist installing fstab-sys module will fail.
Fix this by checking use_fstab and fstab_lines as well
Signed-off-by: Dave Young <dyoung@redhat.com>
For kdump we need scp vmcore to remote machine, the nic to be used is
not limited to netroot one. we need a feature for manually bringing up
network interface. Also it is useful for emergency shell with
ssh-client for recovery or test purpose
I implement this by adding one argument to ifup script, user can use
`/sbin/ifup eth0 -m` to bring up eth0, note ifup will regard it a
manual operation for the nic specified in 1st argument if there's
the 2nd argument.
If same nic is used for netroot the 2nd argument will be ignored,
in this case we will leave netroot bring up it automatically to
avoid side effect. And in this case hooks such as kdump will need to
execute after netroot mounted.
`ifup eth0 -m` will create /tmp/net.eth0.manualup stamp file,
later dhclient-script can check this and pass $2 to netroot,
then netroot script will bring eth0 up
Thanks for comments and suggestions from David Dillow.
Signed-off-by: Dave Young <dyoung@redhat.com>
First, $host_fs_types is an array.
Second, use strstr to match btrfs type.
Cc: Harald Hoyer <harald@redhat.com>
Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
The line "source_all netroot" was trying to source netroot hooks from
/netroot, which doesn't exist, so netroot hooks were never executed.
Signed-off-by: Will Woods <wwoods@redhat.com>
When booting with nfsroot, dracut doesn't necessarily set the initial
hostname correctly.
According to dhcp-options(5), the name may or may not be qualified with
the local domain. It goes on to say "it is preferable to use the
domain-name option to specify the domain name".
So dhclient-script needs to be able to handle the cases: a) where
host-name is fully qualified and domain name is also specified; b)
where hostname is fully qualified and the domain is not separately
specified; c) where host-name is "short" and domain-name is also
specified; and d) do its best where host-name is short but domain-name
is not specified.
The dhclient-script in initramfs does not handle case "c", apparently
the preferred situation properly, setting hostname to "short".
https://bugzilla.redhat.com/show_bug.cgi?id=756347
This rewrites a portion of the module to support xz, as well as allow
an easier expansion should future compression methods for kernel
modules ever materialize.
Add ssh client module which support ssh key mode and interactive mode.
with --sshkey option you can provide the ssh key to be installed
>why not call it "ssh" module?
ssh-client is better, maybe future there will be ssh-server come in.
In debian these are also two different packages.
Usage:
1. sshkey mode:
transfer your public key to remote machine with ssh-copy-id or do it mannaully
example of options:
./dracut -l -H -a ssh-client --sshkey /root/.ssh/id_rsa i.img
2. interactive mode:
need use --ctty option, ie.:
./dracut -l -H -a ssh-client --ctty i.img
[v2 changes]:
per wangcong: add patch description about module name
add help line in usage()
remove useless comment
Signed-off-by: Dave Young <dyoung@redhat.com>
Option --ctty will optionally add setsid binary to dracut's image.
During runtime, if rd.ctty is set and is a character device,
emergency shells will be spawned with job control.
in case no ctty was provided, shell was spawned without caring about
/dev/console. Also, the ctty is more opportunistic. If the image was
generated with --ctty, we will fallback to /dev/tty1 if rc.ctty is
invalid or missing. Otherwise we spawn standard shell on /dev/console
[dyoung@redhat.com: Rebased to usrmove branch]
Signed-off-by: Michal Soltys <soltys@ziu.info>
Signed-off-by: Dave Young <dyoung@redhat.com>
ssh module will need root user in /etc/passwd, so add root and nobody
to /etc/passwd in 99base instead of nfs module
Signed-off-by: Dave Young <dyoung@redhat.com>
While the documentation states that ifname MAC addresses must be
lower case, we silently accept upper case ones and fail later on
when udev doesn't rename the device.
Instead of adding sanity checking on the MAC address just convert
it to lower case and remove the requirement completely.
fstab-sys now also handles device passed by dracut argument "--mount"
The "--mount" mount point is possible not exist in $NEWROOT. Thus mount it
in initramfs if mount point is not exist in real rootfs
It is useful to know that loop device that the live image's / is mounted
from. Make a /run/initramfs/live-baseloop symlink that points to it.
Edited-By: harald@redhat.com: changed /dev/live-baseloop
to /run/initramfs/live-baseloop
Like -H, we need to poll every module to check if it is needed
to mount a specific device in '--mount'.
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Dave Young