This repository has been archived by the owner on Aug 25, 2021. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 27
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
For redeploying the rootfs
- Loading branch information
Showing
6 changed files
with
154 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,41 @@ | ||
#!/bin/bash | ||
set -euo pipefail | ||
|
||
rootmnt=/mnt/rootfs | ||
mkdir -p $rootmnt | ||
mount /dev/disk/by-label/root $rootmnt | ||
igntmp=/run/ignition-rootfs | ||
|
||
case "${1:-}" in | ||
save) | ||
for toplevel in boot ostree; do | ||
mkdir -p ${igntmp}/${toplevel} | ||
chcon -h --reference=${rootmnt}/${toplevel} ${igntmp}/${toplevel} | ||
done | ||
# We copy the repo, /var and the .origin file; if we tried to copy | ||
# everything with e.g. `cp` we'd end up breaking hardlinks. | ||
repo=${igntmp}/ostree/repo | ||
ostree --repo=${repo} init --mode=bare | ||
cp ${rootmnt}/ostree/repo/config ${repo}/config | ||
ostree --repo=${repo} pull-local ${rootmnt}/ostree/repo | ||
stateroot=$(ls ${rootmnt}/ostree/deploy) | ||
statepath=ostree/deploy/${stateroot} | ||
mkdir -p ${igntmp}/${statepath} | ||
cp -a ${rootmnt}/${statepath}/var ${igntmp}/${statepath}/var | ||
mkdir -p ${igntmp}/${statepath}/deploy | ||
cp -a ${rootmnt}/${statepath}/deploy/*.origin ${igntmp}/${statepath}/deploy/ | ||
commit=$(cd ${stateroot} && ls *.0 | cut -f 1 -d '.') | ||
echo "${commit}" > ${igntmp}/ostree-commit | ||
;; | ||
restore) | ||
echo "Restoring ostree repo..." | ||
mv -T ${igntmp}/ostree ${rootmnt}/ostree | ||
echo "...done" | ||
commit=$(cat ${igntmp}/ostree-commit) | ||
echo "Redeploying OSTree commit ${commit} ..." | ||
ostree admin --sysroot=${rootmnt} deploy ${commit} | ||
;; | ||
*) | ||
echo "Unsupported operation: ${1:-}" | ||
;; | ||
esac |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,45 @@ | ||
#!/bin/bash | ||
set -euo pipefail | ||
|
||
rootmnt=/mnt/rootfs | ||
mkdir -p $rootmnt | ||
mount /dev/disk/by-label/root $rootmnt | ||
tmproot=/run/ignition-rootfs | ||
|
||
case "${1:-}" in | ||
save) | ||
echo "HACK: Setting SELinux permissive" | ||
echo "https://github.com/coreos/ignition-dracut/pull/79#issuecomment-488446949" | ||
setenforce 0 | ||
echo "Moving rootfs to RAM..." | ||
mkdir ${tmproot} | ||
# OSTree added the immutable bit on the deployment root, and | ||
# cosa's create_disk added it to the rootfs | ||
chattr -i ${rootmnt} ${rootmnt}/ostree/deploy/*/deploy/*.0 | ||
for x in boot ostree; do | ||
# TODO; copy instead of mv to avoid writes, since we're just | ||
# about to blow away the whole FS anyways? | ||
ls -al ${rootmnt}/${x} | ||
mv -Tn ${rootmnt}/${x} ${tmproot}/${x} | ||
done | ||
umount ${rootmnt} | ||
# Just directly re-init here so we can test things as if | ||
# ignition-disks blew away the root fs. | ||
mkfs.xfs -f /dev/disk/by-label/root -L root -m reflink=1 | ||
echo "done!" | ||
;; | ||
restore) | ||
echo "Restoring rootfs from RAM..." | ||
ls -al ${tmproot} | ||
for x in boot ostree; do | ||
ls -al ${tmproot}/${x} | ||
mv -Tn ${tmproot}/${x} ${rootmnt}/${x} | ||
done | ||
# And restore the immutable bits | ||
chattr +i ${rootmnt}/ostree/deploy/*/deploy/*.0 ${rootmnt} | ||
echo "...done" | ||
;; | ||
*) | ||
echo "Unsupported operation: ${1:-}" | ||
;; | ||
esac |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,15 @@ | ||
[Unit] | ||
Description=Ignition OSTree: restore rootfs | ||
DefaultDependencies=false | ||
After=ignition-disks.service | ||
Before=initrd-root-fs.target | ||
Before=sysroot.mount | ||
ConditionKernelCommandLine=ostree | ||
|
||
[Service] | ||
Type=oneshot | ||
RemainAfterExit=yes | ||
EnvironmentFile=/run/ignition.env | ||
# So we can transiently mount sysroot | ||
MountFlags=slave | ||
ExecStart=/usr/libexec/ignition-dracut-rootfs restore |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,26 @@ | ||
[Unit] | ||
Description=Ignition OSTree: save rootfs | ||
DefaultDependencies=false | ||
After=basic.target | ||
Before=ignition-disks.service | ||
ConditionKernelCommandLine=ostree | ||
|
||
# Run after ignition-setup has run because ignition-setup | ||
# may copy in new/different ignition configs for us to consume. | ||
After=ignition-setup-base.service | ||
After=ignition-setup-user.service | ||
|
||
# Network may be used to fetch userdata content. | ||
After=network.target | ||
|
||
# This stage requires udevd to detect disk partitioning changes. | ||
Requires=systemd-udevd.service | ||
After=systemd-udevd.service | ||
|
||
[Service] | ||
Type=oneshot | ||
RemainAfterExit=yes | ||
EnvironmentFile=/run/ignition.env | ||
# So we can transiently mount sysroot | ||
MountFlags=slave | ||
ExecStart=/usr/libexec/ignition-dracut-rootfs save |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,26 @@ | ||
#!/bin/bash | ||
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*- | ||
# ex: ts=8 sw=4 sts=4 et filetype=sh | ||
|
||
depends() { | ||
echo ignition ostree | ||
} | ||
|
||
install_ignition_unit() { | ||
local unit="$1"; shift | ||
local target="${1:-ignition-complete.target}"; shift | ||
local instantiated="${1:-$unit}"; shift | ||
inst_simple "$moddir/$unit" "$systemdsystemunitdir/$unit" | ||
mkdir -p "$initdir/$systemdsystemunitdir/$target.requires" | ||
ln_r "../$unit" "$systemdsystemunitdir/$target.requires/$instantiated" | ||
} | ||
|
||
install() { | ||
inst_multiple ostree tar chattr setenforce | ||
|
||
inst_script "$moddir/ignition-dracut-rootfs.sh" \ | ||
"/usr/libexec/ignition-dracut-rootfs" | ||
|
||
install_ignition_unit ignition-rootfs-save.service | ||
install_ignition_unit ignition-rootfs-restore.service | ||
} |