On Sunday 11 February 2007 07:54, Jurij Smakov wrote: > The config variable CONFIG_DEBUG_FS, enabled recently for all kernel > flavours adds over 400K to the size of the compressed image size on > sparc32. As a result, it does not boot anymore (uncompressed image > does not fit into the allotted space).
I see that this variable is also set for the 486 kernel for i386, which means that the size of the kernel for d-i images was also increased by the CONFIG_DEBUG_FS change, even though DEBUG options are not really of any use in a D-I environment. This is a real issue for continued support of installations from floppy, and also from a general "D-I should use as little memory as possible" POV. As you can see from the output below, there is currently precious little space left on the boot floppy, practically only because of the size of the kernel. And we've already left out USB support (for USB-keyboards). The only other thing that could be left out is the splash image. $ df Filesystem 1K-blocks Used Available Use% Mounted on /home/fjp/boot.img 1424 1258 166 89% /mnt $ ls -l total 1258 -rwxr-xr-x 1 root root 67 2007-02-15 11:04 boot.txt -rwxr-xr-x 1 root root 65 2007-02-15 11:04 disk.lbl -rwxr-xr-x 1 root root 568 2007-02-15 11:04 f10.txt -rwxr-xr-x 1 root root 865 2007-02-15 11:04 f1.txt -rwxr-xr-x 1 root root 666 2007-02-15 11:04 f2.txt -rwxr-xr-x 1 root root 616 2007-02-15 11:04 f3.txt -rwxr-xr-x 1 root root 416 2007-02-15 11:04 f4.txt -rwxr-xr-x 1 root root 806 2007-02-15 11:04 f5.txt -rwxr-xr-x 1 root root 1069 2007-02-15 11:04 f6.txt -rwxr-xr-x 1 root root 916 2007-02-15 11:04 f7.txt -rwxr-xr-x 1 root root 1102 2007-02-15 11:04 f8.txt -rwxr-xr-x 1 root root 766 2007-02-15 11:04 f9.txt -rwxr-xr-x 1 root root 117155 2007-02-15 11:04 initrd.gz -r-xr-xr-x 1 root root 9964 2007-02-15 11:04 ldlinux.sys -rwxr-xr-x 1 root root 1137546 2007-02-15 11:04 linux -rwxr-xr-x 1 root root 9519 2007-02-15 11:04 splash.rle -rwxr-xr-x 1 root root 591 2007-02-15 11:04 syslinux.cfg Post Etch I will be looking if the size of the kernel can be reduced significantly by playing with the config and IMO we should then consider using a different kernel config for D-I kernels from the 486 one. That would of course potentially reduce the compatibility of the D-I kernel with the installed kernel. Of course, it would be even better if options that are not strictly necessary could be disabled in the 486 kernel flavor. The same goes for other arches of course, though most don't have the floppy problem. Cheers, FJP
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