Re: grub-probe detects ext4 wronly as ext2

[Felix Zielcke]

From: "Bean" <address@hidden>
Sent: Friday, July 04, 2008 8:49 AM


> First of all, grub-setup is conservative enough. It read the data
> twice, one using host os, one using grub, and compare result. If the
> data is corrupted, the comparison will fail and it will refuse to
> install.

I thought a few agos as I started to try out ext4 grub-install did success 
and then on reboot GRUB just failed with file not found.
I just tried it out now again on Debian unstable with GRUB 2 1.96+20080626-1 
with whole / as ext4 with extents,uninit_bg and flex_bg

grub-setup uses 100% CPU and last strace output is this:

open("/dev/sda1", O_RDONLY|O_SYNC)      = 3
ioctl(3, BLKFLSBUF, 0)                  = 0
lseek(3, 523279872, SEEK_SET)           = 523279872
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096) = 
4096
close(3)

Attached is the full strace output
For me personally this isn't a problem, I only use ext4 in VMware and I know 
now that GRUB doestn't work with it :)

strace.txt
Description: Text document