* grub-mkimage ignores compression option
@ 2022-06-14 19:17 Eugene Bright
2022-06-15 9:25 ` Vladimir 'phcoder' Serbinenko
0 siblings, 1 reply; 4+ messages in thread
From: Eugene Bright @ 2022-06-14 19:17 UTC (permalink / raw)
To: grub-devel
Option --compression doesn't affect the core image size.
Does it work at all?
Running it without compression `none`
> # grub-mkimage -v -O i386-pc -p /boot btrfs -C none | wc -c
> grub-mkimage: info: the total module size is 0x1a380.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/kernel.img.
> grub-mkimage: info: locating the section .text at 0x0.
> grub-mkimage: info: locating the section .rodata at 0x5d14.
> grub-mkimage: info: locating the section .data at 0x6f40.
> grub-mkimage: info: locating the section .module_license at 0x77c0.
> grub-mkimage: info: locating the section .bss at 0x77e0.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/crypto.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/gcry_crc.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/gzio.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/diskfilter.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/raid6rec.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/lzopio.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/zstd.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/btrfs.mod.
> grub-mkimage: info: kernel_img=0x7f5fb6bc1010, kernel_size=0x77cf.
> grub-mkimage: info: the core size is 0x10092.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/lzma_decompress.img.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/diskboot.img.
> grub-mkimage: info: writing 0x200 bytes.
> grub-mkimage: info: writing 0x10ba2 bytes.
> grub-mkimage: error: cannot sync `stdout': Invalid argument.
> 69026
Running it without compression `xz`
> # grub-mkimage -v -O i386-pc -p /boot btrfs -C xz | wc -c
> grub-mkimage: info: the total module size is 0x1a380.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/kernel.img.
> grub-mkimage: info: locating the section .text at 0x0.
> grub-mkimage: info: locating the section .rodata at 0x5d14.
> grub-mkimage: info: locating the section .data at 0x6f40.
> grub-mkimage: info: locating the section .module_license at 0x77c0.
> grub-mkimage: info: locating the section .bss at 0x77e0.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/crypto.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/gcry_crc.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/gzio.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/diskfilter.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/raid6rec.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/lzopio.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/zstd.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/btrfs.mod.
> grub-mkimage: info: kernel_img=0x7f42a5b1d010, kernel_size=0x77cf.
> grub-mkimage: info: the core size is 0x10092.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/lzma_decompress.img.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/diskboot.img.
> grub-mkimage: info: writing 0x200 bytes.
> grub-mkimage: info: writing 0x10ba2 bytes.
> grub-mkimage: error: cannot sync `stdout': Invalid argument.
> 69026
Is it a problem or am I missing something?
Compression could alleviate `core.img is unusually large. It
won't fit in the embedding area.` issue.
https://lists.gnu.org/archive/html/grub-devel/2019-11/msg00057.html
--
Eugene Bright
Tel.: +380635426132
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: grub-mkimage ignores compression option
2022-06-14 19:17 grub-mkimage ignores compression option Eugene Bright
@ 2022-06-15 9:25 ` Vladimir 'phcoder' Serbinenko
2022-07-06 12:59 ` Daniel Kiper
0 siblings, 1 reply; 4+ messages in thread
From: Vladimir 'phcoder' Serbinenko @ 2022-06-15 9:25 UTC (permalink / raw)
To: The development of GNU GRUB
[-- Attachment #1: Type: text/plain, Size: 3853 bytes --]
Documentation states that it works only on some platforms. Currently only
on MIPS. i386-pc always uses lzma
Le mer. 15 juin 2022, 00:39, Eugene Bright via Grub-devel <
grub-devel@gnu.org> a écrit :
> Option --compression doesn't affect the core image size.
> Does it work at all?
>
> Running it without compression `none`
> > # grub-mkimage -v -O i386-pc -p /boot btrfs -C none | wc -c
> > grub-mkimage: info: the total module size is 0x1a380.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/kernel.img.
> > grub-mkimage: info: locating the section .text at 0x0.
> > grub-mkimage: info: locating the section .rodata at 0x5d14.
> > grub-mkimage: info: locating the section .data at 0x6f40.
> > grub-mkimage: info: locating the section .module_license at 0x77c0.
> > grub-mkimage: info: locating the section .bss at 0x77e0.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/crypto.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/gcry_crc.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/gzio.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/diskfilter.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/raid6rec.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/lzopio.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/zstd.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/btrfs.mod.
> > grub-mkimage: info: kernel_img=0x7f5fb6bc1010, kernel_size=0x77cf.
> > grub-mkimage: info: the core size is 0x10092.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/lzma_decompress.img.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/diskboot.img.
> > grub-mkimage: info: writing 0x200 bytes.
> > grub-mkimage: info: writing 0x10ba2 bytes.
> > grub-mkimage: error: cannot sync `stdout': Invalid argument.
> > 69026
>
> Running it without compression `xz`
> > # grub-mkimage -v -O i386-pc -p /boot btrfs -C xz | wc -c
> > grub-mkimage: info: the total module size is 0x1a380.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/kernel.img.
> > grub-mkimage: info: locating the section .text at 0x0.
> > grub-mkimage: info: locating the section .rodata at 0x5d14.
> > grub-mkimage: info: locating the section .data at 0x6f40.
> > grub-mkimage: info: locating the section .module_license at 0x77c0.
> > grub-mkimage: info: locating the section .bss at 0x77e0.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/crypto.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/gcry_crc.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/gzio.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/diskfilter.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/raid6rec.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/lzopio.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/zstd.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/btrfs.mod.
> > grub-mkimage: info: kernel_img=0x7f42a5b1d010, kernel_size=0x77cf.
> > grub-mkimage: info: the core size is 0x10092.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/lzma_decompress.img.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/diskboot.img.
> > grub-mkimage: info: writing 0x200 bytes.
> > grub-mkimage: info: writing 0x10ba2 bytes.
> > grub-mkimage: error: cannot sync `stdout': Invalid argument.
> > 69026
>
> Is it a problem or am I missing something?
>
> Compression could alleviate `core.img is unusually large. It
> won't fit in the embedding area.` issue.
>
> https://lists.gnu.org/archive/html/grub-devel/2019-11/msg00057.html
>
> --
> Eugene Bright
> Tel.: +380635426132
>
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> https://lists.gnu.org/mailman/listinfo/grub-devel
>
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: grub-mkimage ignores compression option
2022-06-15 9:25 ` Vladimir 'phcoder' Serbinenko
@ 2022-07-06 12:59 ` Daniel Kiper
0 siblings, 0 replies; 4+ messages in thread
From: Daniel Kiper @ 2022-07-06 12:59 UTC (permalink / raw)
To: eugene; +Cc: phcoder, The development of GNU GRUB
On Wed, Jun 15, 2022 at 11:25:55AM +0200, Vladimir 'phcoder' Serbinenko wrote:
> Documentation states that it works only on some platforms. Currently only on
> MIPS. i386-pc always uses lzma
>
> Le mer. 15 juin 2022, 00:39, Eugene Bright via Grub-devel <grub-devel@gnu.org>
> a écrit :
> Option --compression doesn't affect the core image size.
> Does it work at all?
>
> Running it without compression `none`
> > # grub-mkimage -v -O i386-pc -p /boot btrfs -C none | wc -c
> > grub-mkimage: info: the total module size is 0x1a380.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/kernel.img.
> > grub-mkimage: info: locating the section .text at 0x0.
> > grub-mkimage: info: locating the section .rodata at 0x5d14.
> > grub-mkimage: info: locating the section .data at 0x6f40.
> > grub-mkimage: info: locating the section .module_license at
> 0x77c0.
> > grub-mkimage: info: locating the section .bss at 0x77e0.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/crypto.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/gcry_crc.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/gzio.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/diskfilter.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/raid6rec.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/lzopio.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/zstd.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/btrfs.mod.
> > grub-mkimage: info: kernel_img=0x7f5fb6bc1010, kernel_size=0x77cf.
> > grub-mkimage: info: the core size is 0x10092.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/
> lzma_decompress.img.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/diskboot.img.
> > grub-mkimage: info: writing 0x200 bytes.
> > grub-mkimage: info: writing 0x10ba2 bytes.
> > grub-mkimage: error: cannot sync `stdout': Invalid argument.
> > 69026
>
> Running it without compression `xz`
> > # grub-mkimage -v -O i386-pc -p /boot btrfs -C xz | wc -c
> > grub-mkimage: info: the total module size is 0x1a380.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/kernel.img.
> > grub-mkimage: info: locating the section .text at 0x0.
> > grub-mkimage: info: locating the section .rodata at 0x5d14.
> > grub-mkimage: info: locating the section .data at 0x6f40.
> > grub-mkimage: info: locating the section .module_license at
> 0x77c0.
> > grub-mkimage: info: locating the section .bss at 0x77e0.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/crypto.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/gcry_crc.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/gzio.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/diskfilter.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/raid6rec.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/lzopio.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/zstd.mod.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/btrfs.mod.
> > grub-mkimage: info: kernel_img=0x7f42a5b1d010, kernel_size=0x77cf.
> > grub-mkimage: info: the core size is 0x10092.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/
> lzma_decompress.img.
> > grub-mkimage: info: reading /usr/lib/grub/i386-pc/diskboot.img.
> > grub-mkimage: info: writing 0x200 bytes.
> > grub-mkimage: info: writing 0x10ba2 bytes.
> > grub-mkimage: error: cannot sync `stdout': Invalid argument.
> > 69026
>
> Is it a problem or am I missing something?
>
> Compression could alleviate `core.img is unusually large. It
> won't fit in the embedding area.` issue.
>
> https://lists.gnu.org/archive/html/grub-devel/2019-11/msg00057.html
I want to add we no longer support small MBR gaps. More you can find here [1].
However, if you use Btrfs then this patch should help [2].
Daniel
[1] https://www.gnu.org/software/grub/manual/grub/grub.html#BIOS-installation
[2] http://git.savannah.gnu.org/gitweb/?p=grub.git;a=commit;h=b0f06a81c6f31b6fa20be67a96b6683bba8210c9
^ permalink raw reply [flat|nested] 4+ messages in thread
* grub-mkimage ignores compression option
@ 2022-06-15 6:25 Eugene Bright
0 siblings, 0 replies; 4+ messages in thread
From: Eugene Bright @ 2022-06-15 6:25 UTC (permalink / raw)
To: grub-devel
[-- Attachment #1: Type: text/plain, Size: 3347 bytes --]
Hello!
Option --compression doesn't affect the core image size. Does it work at all?
Running grub-mkimage with compression `none`
> # grub-mkimage -v -O i386-pc -p /boot btrfs -C none | wc -c
> grub-mkimage: info: the total module size is 0x1a380.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/kernel.img.
> grub-mkimage: info: locating the section .text at 0x0.
> grub-mkimage: info: locating the section .rodata at 0x5d14.
> grub-mkimage: info: locating the section .data at 0x6f40.
> grub-mkimage: info: locating the section .module_license at 0x77c0.
> grub-mkimage: info: locating the section .bss at 0x77e0.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/crypto.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/gcry_crc.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/gzio.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/diskfilter.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/raid6rec.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/lzopio.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/zstd.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/btrfs.mod.
> grub-mkimage: info: kernel_img=0x7f5fb6bc1010, kernel_size=0x77cf.
> grub-mkimage: info: the core size is 0x10092.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/lzma_decompress.img.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/diskboot.img.
> grub-mkimage: info: writing 0x200 bytes.
> grub-mkimage: info: writing 0x10ba2 bytes.
> grub-mkimage: error: cannot sync `stdout': Invalid argument.
> 69026
Running grub-mkimage with compression `xz`
> # grub-mkimage -v -O i386-pc -p /boot btrfs -C xz | wc -c
> grub-mkimage: info: the total module size is 0x1a380.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/kernel.img.
> grub-mkimage: info: locating the section .text at 0x0.
> grub-mkimage: info: locating the section .rodata at 0x5d14.
> grub-mkimage: info: locating the section .data at 0x6f40.
> grub-mkimage: info: locating the section .module_license at 0x77c0.
> grub-mkimage: info: locating the section .bss at 0x77e0.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/crypto.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/gcry_crc.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/gzio.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/diskfilter.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/raid6rec.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/lzopio.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/zstd.mod.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/btrfs.mod.
> grub-mkimage: info: kernel_img=0x7f42a5b1d010, kernel_size=0x77cf.
> grub-mkimage: info: the core size is 0x10092.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/lzma_decompress.img.
> grub-mkimage: info: reading /usr/lib/grub/i386-pc/diskboot.img.
> grub-mkimage: info: writing 0x200 bytes.
> grub-mkimage: info: writing 0x10ba2 bytes.
> grub-mkimage: error: cannot sync `stdout': Invalid argument.
> 69026
Is it a problem or am I missing something?
Compression could alleviate "core.img is unusually large. It
won't fit in the embedding area." issue.
https://lists.gnu.org/archive/html/grub-devel/2019-11/msg00057.html
---
Eugene Bright
IT-engineer
Tel: +380635426132
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2022-06-14 19:17 grub-mkimage ignores compression option Eugene Bright
2022-06-15 9:25 ` Vladimir 'phcoder' Serbinenko
2022-07-06 12:59 ` Daniel Kiper
2022-06-15 6:25 Eugene Bright
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