Hello there,
I got a problem while trying to umount NFS. I have two web servers,
one exports its /var/www for NFS share and the other mounts it as its own
DocumentRoot too, thus I got two web servers with exactly the same
contents. If the one as NFS server malfunctions, the other NFS
client should umount its /var/www and link it to the other place.
Well, how can I umount the NFS client's /var/www while the NFS
services is not available? I use "-o bg,soft,intr,retry=5,timeo=2"
as mount arguments and "-f" as umount option. I found that if the
NFS client's active interface, eth0 here, is down, I can umount
/var/www after a short time due to NFS error. Otherwise, the console
is full of messages like "NFS not responding, time out", and it always
says "/var/www: Device busy" While I try to umount it.
I wonder what makes this happen, and I think that controlling the
interface directly to meet my need is a bad idea. Any comment or
advice is appreciated.
Thanks,
Chih-An
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