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Re: Reiserfs v3 support for grub 2 (alpha version)


From: Hollis Blanchard
Subject: Re: Reiserfs v3 support for grub 2 (alpha version)
Date: Mon, 09 Oct 2006 14:50:31 -0500

Thanks for sending this out Vincent!

I had an opportunity to test it. It works well enough to mount a
filesystem, but unfortunately beyond that it was rather flaky:
        grub> ls -l (disk,3)/boot
        DIR         symtypes-2.6.16.21-0.8-ppc64.gz/
        DIR         vmlinux-2.6.16.21-0.8-ppc64/
        DIR         symsets-2.6.16.21-0.8-ppc64.tar.gz/
        7235441179746107399vmlinux
        DIR         symvers-2.6.16.21-0.8-ppc64.gz/
        
        grub> ls -l (disk,3)/boot/vmlinux-2.6.16.21-0.8-ppc64/
        error: file not found
        grub> ls -l (disk,3)/boot/vmlinux-2.6.16.21-0.8-ppc64
        DIR         ftp/
        DIR         www/
        
        grub> ls -l (disk,3)/boot/vmlinux
        error: not a regular file
        grub> ls -l (disk,3)/boot/vmlinux/
        DIR         gnome/

-Hollis

On Sun, 2006-10-01 at 16:18 +0200, Vincent Pelletier wrote:
> Here is attached the latest working version of reiserfs handling.
> 
> What it does :
> - Recognises the partition type
> - Read the partition label (needs confirmation of the label position)
> - List directory content (see limitations)
> - Read file content (see limitations)
> 
> Limitations :
> - Item (file & dir) size limited to one indirection block. Readable size is a 
> bit less than number_of_contiguous_indirect_pointers * block_size, which 
> means at most 16MB on a 8192 bytes/block reiserfs, 4MB on a 4096 bytes/block, 
> etc.
> - No symlink support : although the symlinks can be read, they are read as a 
> text file containing a path, nothing more.
> - No journal playback
> - Alpha version : will potentially leak memory, be slow, not suitable for 
> your 
> needs, not tested with all kinds of reiserfs options & versions... Play 
> with^W^WUse it at your own risks - risks which should be limited to wasting 
> time because no write is ever done to the partition, of course. 
> 
> Ah, and it's not always 80-columns wordwrapped, other than that the coding 
> style should be respected. This will be fixed in the final version.
> 
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