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Hi,
Eddie Horng:
> I have another workaround is to touch all dirs right after aufs mount, this
> will force aufs always return copied-up file handle, although the cost is
> extra time and space, but it does work for me to complete the building of
> my codebase.
Here is another workaround from
Eddie Horng:
> I noticed that ls(1) and "stat ." work but getcwd(2) still fail after those
> commands, I got so confused when I just beginning to understand this issue.
Yes, that is why I wrote that I could not reproduce in the beginning.
All commands I have tried worked.
I might be confused
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Eddie Horng:
> I printed some logs of above test case, looks like my trace in initial post
> is not exactly correct, d_invalidate is not directly call from mkdir
> syscall, but I think mkdir triggers nfsd send a changed file handler then
> d_invalidate is eventually invoked.
Ok, so the scenario
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Eddie Horng:
> VFS does re-lookup the dropped dentry, but seems only happened if there's a
> user-mode command trigger it, for example "cd ."
> Look at below log, the dropped dentry instance 0x8fc22d3066c0 is
> exactly the one getcwd used and is unlinked no matter how many times getcwd
> is
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Eddie Horng:
> I printed some logs of above test case, looks like my trace in initial post
> is not exactly correct, d_invalidate is not directly call from mkdir
> syscall, but I think mkdir triggers nfsd send a changed file handler then
> d_invalidate is eventually invoked.
I don't think
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sf...@users.sourceforge.net:
> I have confirmed on Ubuntu-4.10.0-34.38 kernel. The kernel configuration
> is for my test environment, so it must be different from yours. But I am
> not sure whether the config is related.
I mean that I could not reproduce the problem.
J. R. Okajima
Eddie Horng:
> e. in step 8, mkdir invokes nfs_lookup_revalidate
> f. server side again run into: nfsd -> nfsd_lookup -> aufs::aufs_encode_fh
> g. this time, aufs_encode_fh returns filehander of folderA in br0(rw)
> i. in nfs_lookup_revalidate, nfs_compare_fh(NFS_FH(inode), fhandle) is
> called
Hello Eddie,
Eddie Horng:
> I encountered a getcwd() failure problem on a NFS mounted dir, in server
> side, the dir is aufs mounted.
> This problem can be always reproduced as below steps:
:::
Thanx for the detailed report and the analysis.
But I could not reproduce the problem on my
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