releasing space after rapid grwoth

[Max Veprinsky <max.veprinsky@livetext.com>]

Hello all,

I'm trying to reclaim disk space on stable storage which was consumed
by a crashed apache process at a rate of ~100GB/hour. This issue has
happened a few times before and normally resolved by discovering a
.nfsXXXXX file, stopping the process on the the application server
that was holding the file. Sometimes the used filespace is recovered
quickly without manual intervention, other times I had to delete the
.nfsXXXX file manually.

Last time this happened 3 TB of disk space was consumed and no
.nfsXXXX file of that size was discovered, nor. I dismounted all of
the volumes from the clients 1/2 of the space was recovered.

showmount shows clients connected but there are no network nfs
connections open to any client. I have not restarted nfs server
service fearing that the used space would not be recovered.

Any suggestion greatly appreciated

Regards,
-- Max