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authorGerardo Exequiel Pozzi <vmlinuz386@gmail.com>2015-01-27 14:37:05 -0300
committerGerardo Exequiel Pozzi <vmlinuz386@gmail.com>2015-01-27 14:37:05 -0300
commita637bdb8574168ab4cddef13d5de7f458650bda5 (patch)
treeec3b5bb312b9c1f987d6a14a3e996a1dad4eef3d /docs/README.bootparams
parentfe29d5f334608f5ae93a40d4947aab1cb8517340 (diff)
downloadarchiso32-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>
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