[SSI-devel] [ ssic-linux-Bugs-924258 ] NFS server: down exported chard mount hangs nfs

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Bugs item #924258, was opened at 2004-03-26 14:29
Message generated for change (Tracker Item Submitted) made by Item Submitter
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Category: Filesystem
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: David B. Zafman (dzafman)
Assigned to: David B. Zafman (dzafman)
Summary: NFS server: down exported chard mount hangs nfs

Initial Comment:

Currently, if a chard mount which is being exported goes down, 
and can't failover, nfsd processes will hang.  After all the nfsd 
processes are hung, the cluster won't respond to any NFS clients 
until the down filesystem can be brought back into the cluster.

This is another reason we need a NOHANG type flag which nfsd can 
set, so that a down chard filesystem won't hang it.  The nfsd 
processes would have to get a special error and then drop the 
response to the NFS client.  This way the nfsd is available to 
handle traffic for other available filesystems, and the NFS client 
will keep trying.

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