Add a standard --root-size value (maybe 2GB?) to all mkosi default files

[q2dg]

Current images have no space left to add any content to them (like installing one more package, for instance). Maybe a bit more of free space by default would be a great idea to make images more usable. Thanks!

[shibumi]

Hi @q2dg sorry for the late reply, Yes, this makes absolutely sense, I just wonder if this would increase the tarball size as well.

[Edu4rdSHL]

Hello, I've checked the ArchLinux raw image today and I can't reproduce this issue as all raw images are created with a 2.9G root size by default. When I import and boot the image, I got:

archlinux login: root
Password: 
Last login: Tue Mar  2 03:09:29 on pts/0
[root@archlinux ~]# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/loop0p2    2.9G  732M  2.1G  27% /
/dev/loop0p1    253M   39M  214M  16% /efi
tmpfs           3.2G     0  3.2G   0% /tmp
tmpfs           4.0M     0  4.0M   0% /dev
tmpfs           3.2G     0  3.2G   0% /dev/shm
tmpfs           6.3G   64K  6.3G   1% /run
/dev/nvme0n1p5   98G   22G   72G  24% /run/host/os-release
run              16G  1.4M   16G   1% /run/host/incoming
tmpfs           3.2G     0  3.2G   0% /run/user/0

and I can also install packages as well:

[root@archlinux ~]# pacman -Syu pacman-contrib
:: Synchronizing package databases...
 core is up to date
 extra is up to date
 community is up to date
:: Starting full system upgrade...
resolving dependencies...
looking for conflicting packages...

Packages (5) db-5.3.28-5  fakeroot-1.25.3-2  gdbm-1.19-2  perl-5.32.1-1
             pacman-contrib-1.4.0-1

Total Download Size:   16.53 MiB
Total Installed Size:  64.90 MiB

:: Proceed with installation? [Y/n] 
:: Retrieving packages...
 fakeroot-1.25.3-...    70.7 KiB  1178 KiB/s 00:00 [######################] 100%
 gdbm-1.19-2-x86_64    210.7 KiB  2.29 MiB/s 00:00 [######################] 100%
 db-5.3.28-5-x86_64   1098.0 KiB  2.02 MiB/s 00:01 [######################] 100%
 perl-5.32.1-1-x86_64   15.1 MiB  3.70 MiB/s 00:04 [######################] 100%
 pacman-contrib-1...    37.7 KiB  3.68 MiB/s 00:00 [######################] 100%
(5/5) checking keys in keyring                     [######################] 100%
(5/5) checking package integrity                   [######################] 100%
(5/5) loading package files                        [######################] 100%
(5/5) checking for file conflicts                  [######################] 100%
(5/5) checking available disk space                [######################] 100%
:: Processing package changes...
(1/5) installing fakeroot                          [######################] 100%
(2/5) installing gdbm                              [######################] 100%
(3/5) installing db                                [######################] 100%
(4/5) installing perl                              [######################] 100%
(5/5) installing pacman-contrib                    [######################] 100%
Optional dependencies for pacman-contrib
    findutils: for pacdiff --find [installed]
    mlocate: for pacdiff --locate
    sudo: privilege elevation for several scripts
    vim: default merge program for pacdiff
:: Running post-transaction hooks...
(1/3) Reloading system manager configuration...
(2/3) Arming ConditionNeedsUpdate...
(3/3) Warn about old perl modules
[root@archlinux ~]# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/loop0p2    2.9G  820M  2.0G  30% /
/dev/loop0p1    253M   39M  214M  16% /efi
tmpfs           3.2G     0  3.2G   0% /tmp
tmpfs           4.0M     0  4.0M   0% /dev
tmpfs           3.2G     0  3.2G   0% /dev/shm
tmpfs           6.3G   64K  6.3G   1% /run
/dev/nvme0n1p5   98G   22G   72G  24% /run/host/os-release
run              16G  1.4M   16G   1% /run/host/incoming
tmpfs           3.2G     0  3.2G   0% /run/user/0

same with Debian:

Debian GNU/Linux 10 buster console

buster login: root
Password: 
Linux buster 5.11.2-128-tkg-MuQSS #1 TKG SMP PREEMPT Sun, 28 Feb 2021 17:05:15 +0000 x86_64

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
root@buster:~# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/loop0p1    2.9G  200M  2.6G   8% /
tmpfs           3.2G     0  3.2G   0% /tmp
tmpfs           4.0M     0  4.0M   0% /dev
tmpfs           3.2G     0  3.2G   0% /dev/shm
tmpfs           6.3G   68K  6.3G   1% /run
/dev/nvme0n1p5   98G   22G   72G  24% /run/host/os-release
run              16G  1.4M   16G   1% /run/host/incoming
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           3.2G     0  3.2G   0% /run/user/0

@shibumi can you confirm if what I just wrote is what the issue was referring to?

[shibumi]

Looks like I fixed this already and just forgot to close the issue.

The plan for the future is to have systemd automatically enlarge the image. Systemd is capable to do this.

[Edu4rdSHL]

This was fixed in https://github.com/systemd/mkosi/pull/462