dump -> restore to nfs volume hangs NFS server ( 6.2-RELEASE )

[Steven Hartland]

I've just performed the following from one machine
to another.
dump -a0uL -C 32 -f - /usr | ( cd /mnt && restore rf - )

Both boxes running 6.2-RELEASE src box on em0 dest on
bge0. shortly after starting the above I tried to do an
ls -l in an ssh session I had open on the destination box.
This hung and never returned so I tried to open a new
session again shortly before gaining a command prompt.

I left this and waited for the backup to finish, which
it did, hoping the machine would spark back into life
once the backup completed. Unfortunately not although
still responding to ping and being able to ls via other
nfs mounts the machine was otherwise dead. Even a
console login via kvm proved fruitless as did
CTRL+ALT+DEL.

The machine seems to be still stuck in this state of
trying to reboot due to the CTRL+ALT+DEL but not getting
very far very quick, ssh is now off and syslogd has
quit but nothing else so far on the console.

So has anyone else experienced this before? Should I
try this again once I get the affected machine back
online? If so what steps should I do to debug this
so we can find a fix?

    Steve


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