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author | Gerardo Exequiel Pozzi <vmlinuz386@gmail.com> | 2015-01-27 14:37:05 -0300 |
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committer | Gerardo Exequiel Pozzi <vmlinuz386@gmail.com> | 2015-01-27 14:37:05 -0300 |
commit | a637bdb8574168ab4cddef13d5de7f458650bda5 (patch) | |
tree | ec3b5bb312b9c1f987d6a14a3e996a1dad4eef3d /configs | |
parent | fe29d5f334608f5ae93a40d4947aab1cb8517340 (diff) | |
download | archiso32-a637bdb8574168ab4cddef13d5de7f458650bda5.tar.xz |
[archiso] Add optional OverlayFS support
This is the first attemp to test overlayfs in archiso.
The current dm-snapshot mode is keep and is enabled by default,
while the new mode is enabled via "-s sfs" to mkarchiso.
No new boot parameters are added, since archiso hooks detects
if the .sfs file is for dm-snapshot (airootfs.img inside)
or for overlayfs.
Persistence is supported in overlayfs mode using the same options
(cowlabel or cowdevice), but warning while in dm-snapshot mode,
only one file is used (airootfs.cow), in overlayfs mode internal
files for workdir/ and upperdir/ are allocated, so you can not use
VFAT or NTFS.
To test this, you need to enable [testing] in pacman.conf from
releng profile and edit build.sh then add "-s sfs" in make_prepare()
Look at:
setarch ${arch} mkarchiso ${verbose} -w "${work_dir}" -D "${install_dir}" prepare
Replace with:
setarch ${arch} mkarchiso ${verbose} -w "${work_dir}" -s sfs -D "${install_dir}" prepare
The build requires just half of space that the build for dm-snapshot,
since there is no ext4 img ;)
Just to remember: there is no space gain in .sfs (just about 2M)
There is at least one thing during boot with machine-id service:
Dec 24 03:31:39 archiso systemd-machine-id-commit[183]: Failed to unmount transient /etc/machine-id file in our private namespace: Invalid argument
Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@gmail.com>
Diffstat (limited to 'configs')
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