[NFS] nfsd hangs 2.6.28 through 2.6.28.7

[David Warren <warren-qmPYOCrcNLLyFCzt5hm0YvZ8FUJU4vz8@public.gmane.org>]

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We are seeing nfsd getting stuck in d wait at boot time. The fix seems 
to be stopping in single user mode prior to nfs starting, renaming 
/var/lib/nfs/v4recovery/ and making a new one, then letting the system 
continue. When it boots and hangs, all processes that touch 
/var/lib/nfs/v4recovery/ go into D-wait. However, if you rename it and 
let it boot you can look in the old directory. Any ideas what could be 
happening?
Also, is there any documentation on the files in 
/var/lib/nfs/v4recovery/? We would like to possibly be able to decode 
the names.

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fn:David Warren
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adr:Dept of Atmospheric Sciences, Box 351640;;University of Washington;Seattle;WA;98195-1640;USA
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title:Software Engineer
tel;work:206 543-0945
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