linux-ext4 - Re: e2fsck dies with error "this should never happen!!!"

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Date:	Fri, 07 Mar 2008 17:29:49 +0100
From:	Bas van Schaik <bas@...es.nl>
To:	Eric Sandeen <sandeen@...hat.com>
CC:	linux-ext4@...r.kernel.org
Subject: Re: e2fsck dies with error "this should never happen!!!"

Eric Sandeen wrote:
> Bas van Schaik wrote:
>
>   
>> Why is e2image refusing to restore the metadata, and what does "File too
>> large" mean?
>>     
> How big are things really?  stracing the command would show you what is
> returning the error...
>   
The image file is 35335922 kbytes (= about 33GB), but is of course
sparse and actually uses 4218560 kbytes (= about 4 GB). The original
filesystem is 550502400 blocks long (block size 4096, number of inodes:
275251200).

The last few lines of output when using strace:
> close(4)                                = 0
> open("/usr/lib/gconv/ISO8859-1.so", O_RDONLY) = 4
> read(4, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\200\4\0"...,
> 512) = 512
> fstat64(4, {st_mode=S_IFREG|0644, st_size=9436, ...}) = 0
> mmap2(NULL, 8228, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4,
> 0) = 0xb1ab3000
> mmap2(0xb1ab4000, 8192, PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0x1) = 0xb1ab4000
> close(4)                                = 0
> write(2, "e2image-pre-e2fsck-snapshot_2008"...,
> 55e2image-pre-e2fsck-snapshot_2008-03-06: File too large
> ) = 55
> exit_group(1)                           = ?
> Process 6218 detached
I can't see what's going wrong here.

  -- Bas


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