Re: ext2 warning in Linux 2.2.7

H. Peter Anvin (hpa@transmeta.com)
Mon, 31 May 1999 17:05:29 -0700

Alexander Viro wrote:
>
> That's fine, but there is one huge but. First of all, with many
> filesystems you simply *don't have* an invariant that would be preserved
> across umount;mount, let along reboot and would fit into 64 bits.
> For FAT-derived filesystems you don't have an invariant that would survive
> _both_ remount and rename. There is nothing to do about that and no OS can
> help here. Period.
>

I almost hate to suggest this, but for some filenames (where such an
invariant exists but wouldn't fit into 64 bits) it might be worthwhile
for the NFS server to keep some persistent state (i.e. extra metadata;
presumably in a special file.)

-- 
"The user's computer downloads the ActiveX code and simulates a 'Blue
Screen' crash, a generally benign event most users are familiar with
and that would not necessarily arouse suspicions."
-- Security exploit description on http://www.zks.net/p3/how.asp


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