dracut/modules.d/95nfs/nfsroot.sh

#!/bin/sh
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh

type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
. /lib/nfs-lib.sh

[ "$#" = 3 ] || exit 1

# root is in the form root=nfs[4]:[server:]path[:options], either from
# cmdline or dhcp root-path
netif="$1"
root="$2"
NEWROOT="$3"

nfs_to_var $root $netif
[ -z "$server" ] && die "Required parameter 'server' is missing"

mount_nfs $root $NEWROOT $netif && { [ -e /dev/root ] || >/dev/root ; }

# inject new exit_if_exists
echo 'settle_exit_if_exists="--exit-if-exists=/dev/root"; rm "$job"' > $hookdir/initqueue/nfs.sh
# force udevsettle to break
> $hookdir/initqueue/work

need_shutdown
nfsroot: mount NFS root from udev rules Work-in-progress to mount NFS root from udev, using the DHCP options and allowing an override from the kernel command line. Supports NFSv4 w/locking and NFSv2/v3 with nolock. This is just an RFC patch, you'll note all the XXX markings where I've been thinking about how to best do things. In addition, we really want to retry DHCP and NFS mounting in a loop, in case the servers are down or overloaded like when booting a full diskless cluster. 16 years ago			`#!/bin/sh`
reformat source code removed tabs and set indention to 4 spaces added emacs and vi format headers 15 years ago			`# -- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; --`
			`# ex: ts=8 sw=4 sts=4 et filetype=sh`
nfsroot: mount NFS root from udev rules Work-in-progress to mount NFS root from udev, using the DHCP options and allowing an override from the kernel command line. Supports NFSv4 w/locking and NFSv2/v3 with nolock. This is just an RFC patch, you'll note all the XXX markings where I've been thinking about how to best do things. In addition, we really want to retry DHCP and NFS mounting in a loop, in case the servers are down or overloaded like when booting a full diskless cluster. 16 years ago
check for getarg() function before sourcing dracut-lib.sh make use of "type getarg" to check, if we really need to source dracut-lib.sh 14 years ago			`type getarg >/dev/null 2>&1 \|\| . /lib/dracut-lib.sh`
port nfsroot to nfs-lib Rewrite nfsroot to use nfs-lib. The functionality should be unchanged. Signed-off-by: Will Woods <wwoods@redhat.com> 13 years ago			`. /lib/nfs-lib.sh`
nfsroot: mount NFS root from udev rules Work-in-progress to mount NFS root from udev, using the DHCP options and allowing an override from the kernel command line. Supports NFSv4 w/locking and NFSv2/v3 with nolock. This is just an RFC patch, you'll note all the XXX markings where I've been thinking about how to best do things. In addition, we really want to retry DHCP and NFS mounting in a loop, in case the servers are down or overloaded like when booting a full diskless cluster. 16 years ago
port nfsroot to nfs-lib Rewrite nfsroot to use nfs-lib. The functionality should be unchanged. Signed-off-by: Will Woods <wwoods@redhat.com> 13 years ago			`[ "$#" = 3 ] \|\| exit 1`
netroot handlers: Add argument checking This is probably not necessary, but paranoia dictates that the actual netroot handlers should check if all three required arguments (netif, root, NEWROOT) are there and useable. 16 years ago
netroot: Introduce detailed cmdline parsers This introduces detailed cmdline parsing, warning or aborting if the cmdline does not contain arguments according to the spec. Makeing sure the parsers don't just call getarg for netroot et al, allows their reuse inside netroot to analyse dhcp root-path as well. Hence we can get rid of the current netroot hooks. The hook itself stays in order to add further modules which should run before netroot handlers are called. This has one drawback: nfsroot needs some more logic to handle nfs specific data inside dhcp root-path. The parsers have been writting according to current discussions about cmdline arguments. This lead to the "discovery" that some test-cases violate the spec. These tests have not been removed, but change to "must fail". 16 years ago			`# root is in the form root=nfs[4]:[server:]path[:options], either from`
			`# cmdline or dhcp root-path`
nfsroot: move to netroot framework Parse and convert commandline options in the cmdline hook, and fill in the missing pieces in the netroot hook. This also allows root=dhcp to work as expected. 16 years ago			`netif="$1"`
			`root="$2"`
netroot: Don't export NEWROOT Exporting NEWROOT to handlers when we already pass them two other arguments doesn't make sense. Passing it as a third argument is better. 16 years ago			`NEWROOT="$3"`
nfsroot: mount NFS root from udev rules Work-in-progress to mount NFS root from udev, using the DHCP options and allowing an override from the kernel command line. Supports NFSv4 w/locking and NFSv2/v3 with nolock. This is just an RFC patch, you'll note all the XXX markings where I've been thinking about how to best do things. In addition, we really want to retry DHCP and NFS mounting in a loop, in case the servers are down or overloaded like when booting a full diskless cluster. 16 years ago
port nfsroot to nfs-lib Rewrite nfsroot to use nfs-lib. The functionality should be unchanged. Signed-off-by: Will Woods <wwoods@redhat.com> 13 years ago			`nfs_to_var $root $netif`
netroot: Introduce detailed cmdline parsers This introduces detailed cmdline parsing, warning or aborting if the cmdline does not contain arguments according to the spec. Makeing sure the parsers don't just call getarg for netroot et al, allows their reuse inside netroot to analyse dhcp root-path as well. Hence we can get rid of the current netroot hooks. The hook itself stays in order to add further modules which should run before netroot handlers are called. This has one drawback: nfsroot needs some more logic to handle nfs specific data inside dhcp root-path. The parsers have been writting according to current discussions about cmdline arguments. This lead to the "discovery" that some test-cases violate the spec. These tests have not been removed, but change to "must fail". 16 years ago			`[ -z "$server" ] && die "Required parameter 'server' is missing"`
NFS root: add support for default root path and %s substitution This implements a default path of /tftpboot/%s if no path is provided, and adds host name substitution for %s, with a fall back to the IP address, as provided by the kernel's nfsroot handling. The test suite is updated to test this functionality. 16 years ago
port nfsroot to nfs-lib Rewrite nfsroot to use nfs-lib. The functionality should be unchanged. Signed-off-by: Will Woods <wwoods@redhat.com> 13 years ago			`mount_nfs $root $NEWROOT $netif && { [ -e /dev/root ] \|\| >/dev/root ; }`
network: break udevsettle early 16 years ago
			`# inject new exit_if_exists`
Move all hooks to "$hookdir" hookdir=/lib/dracut/hooks for now, to keep the root directory clean 14 years ago			`echo 'settle_exit_if_exists="--exit-if-exists=/dev/root"; rm "$job"' > $hookdir/initqueue/nfs.sh`
network: break udevsettle early 16 years ago			`# force udevsettle to break`
Move all hooks to "$hookdir" hookdir=/lib/dracut/hooks for now, to keep the root directory clean 14 years ago			`> $hookdir/initqueue/work`
network: break udevsettle early 16 years ago
shutdown on demand Do not save and restore the initramfs, but instead, just unpack the default initramfs for shutdown on shutdown. 13 years ago			`need_shutdown`