Date: Tue, 9 Feb 1999 19:55:20 -0800 (PST) From: Matthew Dillon <dillon@apollo.backplane.com> To: Bjoern Fischer <bfischer@Techfak.Uni-Bielefeld.DE> Cc: freebsd-stable@FreeBSD.ORG Subject: Re: NFS + cdda2wav Message-ID: <199902100355.TAA77997@apollo.backplane.com> References: <19990209233951.A402@broccoli.no-support.loc>
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:
:Hello Matthew,
:
:here's s.t. I can reproduce on all machines: If you try to
:read audio data from a CDROM using cdda2wav (latest version;
:shipped with cdrecord-1.8a16) and the resulting audio file
:is on an NFS, it will be 50k-100k too small. I tried this
:with all flavors NFS v2/v3 TCP/UDP--the same.
:
:cdda2wav writing to a local FS works perfectly. Not that I
:need to use it w/ NFS--it's a bad idea anyway--but it may
:help to get NFS more stable.
:
: Bjoern
Bjoern, ktrace the program run. I suspect the problem is not
NFS but that the write() latency is causing one of cdda2wav's
forked processes to exit and kill its child before the child
finishes writing.
ktrace -t cn -i cdda2wav ....
kdump -R | less
Try to match up reads from the CD to writes to the output file.
See if the final couple of read/write's match up.
-Matt
Matthew Dillon
<dillon@backplane.com>
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