> %% "Shantanu Goel" <[email protected]> writes:
>=20
> sg> 1. Check out a CVS repository into an NFS mounted directory.
> sg> 2. Move files from CVS working directory into another=20
> directory in the
> sg> same filesystem.
> sg> 3. Tar up the resultant directory.
> sg> 4. Tar prints lots of "file changed after we read it" messages.
>=20
> Interesting: I see this exact same message when taring up the contents
> of a ClearCase view (in 2.4.20-x)... even though I'm 100%=20
> positive that
> no one but me is touching those files. Is this scenario relevant to a
> kernel that old as well?
yes, steve dickson at red hat also found this problem in 2.4.21.
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Stock 2.4 kernels don't exhibit this behaviour because they always
invalidate attributes for the last component of the path if CTO is
enabled, see fs/nfs/dir.c:nfs_lookup_verify_inode(). In 2.6 and 2.4
kernels such as AS3's 2.4.21, with the newer CTO patches, this code was
changed to only do so when the file is being opened. I am surprised you
are seeing this on 2.4.20 since I can't replicate it on 2.4.22.
Shantanu
Lever, Charles wrote:
>>%% "Shantanu Goel" <[email protected]> writes:
>>
>> sg> 1. Check out a CVS repository into an NFS mounted directory.
>> sg> 2. Move files from CVS working directory into another
>>directory in the
>> sg> same filesystem.
>> sg> 3. Tar up the resultant directory.
>> sg> 4. Tar prints lots of "file changed after we read it" messages.
>>
>>Interesting: I see this exact same message when taring up the contents
>>of a ClearCase view (in 2.4.20-x)... even though I'm 100%
>>positive that
>>no one but me is touching those files. Is this scenario relevant to a
>>kernel that old as well?
>>
>>
>
>yes, steve dickson at red hat also found this problem in 2.4.21.
>
>
>
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