This is a low-priority bug and has missed the window for 18.04. I'm nack'ing this for FFe.
The original request remains valid, so I'm resetting this to a non-FFe bug rather than closing it. ** Summary changed: - [FFe] Add LZ4 support to initramfs-tools + Add LZ4 support to initramfs-tools ** Description changed: - Feature Freeze Justification - ============================ - - Initramfs-tools uses gzip compression by default which served us well - for quite some time but LZ4 offers way faster decompression while - making a only slightly bigger initramfs files. - - Having lz4 supported by initramfs-tools would allow users to opt-in for - faster boot in Bionic from day 1. - - On my old laptop the initramfs extraction time decreased from ~1.2s to ~0.24s: - (with lz4) - kernel: [ 0.285692] Unpacking initramfs... - kernel: [ 0.518806] Freeing initrd memory: 65148K - kernel: [ 0.289731] Unpacking initramfs... - kernel: [ 0.522823] Freeing initrd memory: 65148K - (with gzip) - kernel: [ 0.273748] Unpacking initramfs... - kernel: [ 1.490066] Freeing initrd memory: 57140K - kernel: [ 0.281729] Unpacking initramfs... - kernel: [ 1.498493] Freeing initrd memory: 57140K - - Discussion on ubuntu-devel: - https://lists.ubuntu.com/archives/ubuntu-devel/2018-March/040258.html - - IMO the attached patch is minimally intrusive and it is safe to make - this change even at this late hour of the release cycle. - - I have uploaded the package to this PPA for testing the build: - https://launchpad.net/~rbalint/+archive/ubuntu/scratch - - I'm also using the updated package on my system. - Original Bug Text ================= I found that I could enable LZ4 compression for initramfs on my vivid machine by installing liblz4-tool package, adding one line to mkinitramfs and installing a kernel compiled with CONFIG_CRYPTO_LZ4=y. Please include support for (legacy) LZ4. Attached patch includes changes made to the latest version (initramfs- tools_0.120ubuntu3). -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to initramfs-tools in Ubuntu. https://bugs.launchpad.net/bugs/1488620 Title: Add LZ4 support to initramfs-tools Status in initramfs-tools package in Ubuntu: New Bug description: Original Bug Text ================= I found that I could enable LZ4 compression for initramfs on my vivid machine by installing liblz4-tool package, adding one line to mkinitramfs and installing a kernel compiled with CONFIG_CRYPTO_LZ4=y. Please include support for (legacy) LZ4. Attached patch includes changes made to the latest version (initramfs- tools_0.120ubuntu3). To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1488620/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
