Public bug reported:
The initrd on amd64 includes libraries in usr/lib/i386-linux-gnu which
are not needed. That are 3.2 MB wasted.
```
$ sudo 3cpio -t /boot/initrd.img *i386-linux-gnu*
etc/ld.so.conf.d/i386-linux-gnu.conf
usr/lib/i386-linux-gnu
usr/lib/i386-linux-gnu/ld-linux.so.2
usr/lib/i386-linux-gnu/libc.so.6
usr/lib/i386-linux-gnu/libgcc_s.so.1
usr/lib/i386-linux-gnu/libnss_compat.so.2
usr/lib/i386-linux-gnu/libnss_dns.so.2
usr/lib/i386-linux-gnu/libnss_files.so.2
usr/lib/i386-linux-gnu/libnss_hesiod.so.2
usr/lib/i386-linux-gnu/libresolv.so.2
usr/lib/i386-linux-gnu/libudev.so.1
usr/lib/i386-linux-gnu/libudev.so.1.7.12
$ sudo 3cpio -t /boot/initrd.img *i386-linux-gnu* -v | cut -w -f 5 | awk
'{s+=$1} END{print s}'
3228349
```
`/etc/ld.so.conf.d/i386-linux-gnu.conf` adds `/usr/lib/i386-linux-gnu`
to the search path. `_detect_library_directories` picks it up and
`inst_libdir_file` installs all found libraries.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: dracut 110-11
ProcVersionSignature: Ubuntu 7.0.0-15.15-generic 7.0.0
Uname: Linux 7.0.0-15-generic x86_64
ApportVersion: 2.34.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Wed May 20 15:21:40 2026
DracutModulesPackages: dracut-core 110-11
InstallationDate: Installed on 2025-07-28 (296 days ago)
InstallationMedia: Ubuntu 25.04 "Plucky Puffin" - Release amd64 (20250415.3)
PackageArchitecture: all
SourcePackage: dracut
UpgradeStatus: Upgraded to resolute on 2026-03-13 (68 days ago)
** Affects: dracut
Importance: Unknown
Status: Unknown
** Affects: dracut (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
** Description changed:
The initrd on amd64 includes libraries in usr/lib/i386-linux-gnu which
- are not needed:
+ are not needed. That are 3.2 MB wasted.
```
$ sudo 3cpio -t /boot/initrd.img *i386-linux-gnu*
etc/ld.so.conf.d/i386-linux-gnu.conf
usr/lib/i386-linux-gnu
usr/lib/i386-linux-gnu/ld-linux.so.2
usr/lib/i386-linux-gnu/libc.so.6
usr/lib/i386-linux-gnu/libgcc_s.so.1
usr/lib/i386-linux-gnu/libnss_compat.so.2
usr/lib/i386-linux-gnu/libnss_dns.so.2
usr/lib/i386-linux-gnu/libnss_files.so.2
usr/lib/i386-linux-gnu/libnss_hesiod.so.2
usr/lib/i386-linux-gnu/libresolv.so.2
usr/lib/i386-linux-gnu/libudev.so.1
usr/lib/i386-linux-gnu/libudev.so.1.7.12
+ $ sudo 3cpio -t /boot/initrd.img *i386-linux-gnu* -v | cut -w -f 5 | awk
'{s+=$1} END{print s}'
+ 3228349
```
`/etc/ld.so.conf.d/i386-linux-gnu.conf` adds `/usr/lib/i386-linux-gnu`
to the search path. `_detect_library_directories` picks it up and
`inst_libdir_file` installs all found libraries.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: dracut 110-11
ProcVersionSignature: Ubuntu 7.0.0-15.15-generic 7.0.0
Uname: Linux 7.0.0-15-generic x86_64
ApportVersion: 2.34.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Wed May 20 15:21:40 2026
DracutModulesPackages: dracut-core 110-11
InstallationDate: Installed on 2025-07-28 (296 days ago)
InstallationMedia: Ubuntu 25.04 "Plucky Puffin" - Release amd64 (20250415.3)
PackageArchitecture: all
SourcePackage: dracut
UpgradeStatus: Upgraded to resolute on 2026-03-13 (68 days ago)
** Bug watch added: github.com/dracut-ng/dracut/issues #2452
https://github.com/dracut-ng/dracut/issues/2452
** Also affects: dracut via
https://github.com/dracut-ng/dracut/issues/2452
Importance: Unknown
Status: Unknown
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https://bugs.launchpad.net/bugs/2153430
Title:
initrd on amd64 includes libraries in usr/lib/i386-linux-gnu
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