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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 "${install_dir}" prepare
The build requires just half of space that the build for dm-snapshot,
since there is no ext4 img ;)
Just to remember: there is no space gain in .sfs (just about 2M)
There is at least one thing during boot with machine-id service:
Dec 24 03:31:39 archiso systemd-machine-id-commit[183]: Failed to unmount transient /etc/machine-id file in our private namespace: Invalid argument
Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@gmail.com>
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Copying big amount of data results in bad performance as data is
written in chunks of 4kiB (8 * 512 bytes).
The default is not changed but can be overwritten.
Signed-off-by: Christian Hesse <mail@eworm.de>
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Signed-off-by: Christian Hesse <mail@eworm.de>
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Since now cowspace_size == cowfile_size (only one file inside)
Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@gmail.com>
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Move from percent to explicit size and set a default of 256M (sparse)
Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@gmail.com>
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Currently, when booting via HTTP, the airootfs.md5 file is downloaded to
/run/archiso/bootmnt/arch/. However, the checksum file is later assumed
to be located at "/run/archiso/bootmnt/arch/${arch}". Fix the _curl_get
invocation and directly place the file in the right directory.
Fixes a regression introduced in commit b3e1d31 ([archiso] Rework
checksum function, 2014-06-28).
Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
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Among other things, 36459f3 ([archiso] Drop aitab support, 2014-06-28)
removed the possibility to manually set a specific architecture by using
kernel parameters. This, however, is useful, e.g. when installing Arch
Linux on a device that reports itself as i586 but works fine with the
i686 flavor.
Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
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* Make it ISO9660 friendly (extra dot "." is replaced by "_")
* Was used when support both .fs.sfs and .sfs
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Always create one filesystem of a fixed size (32G), format (ext4) and
know name "airootfs".
Simplify logic a lot.
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On low memory systems installing via PXE is not possible.
Do not force copytoram=y for NFS/NDB.
Broken/hang things:
* On shutdown.
* On run-time if some network settings changed.
Implements FS#32006.
Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>
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If not set, nothing is changed in current behaviour.
Since dm-snapshot allows to use as "COW" a file with any size,
without caring about the the size of "origin", we can avoid creating a
"COW" file of the same size as the "origin". This is really useful,
when using as cow_device= a filesystem that is VFAT where sparse files
are not supported, so if root-image.fs is 1000M, passing cowfile_size=25%
will create a root-image.cow of 250M instead of 1000M.
Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>
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This fixes FS#31815
Signed-off-by: Pierre Schmitz <pierre@archlinux.de>
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Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>
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