I am mounting a few filesystems from one F10 machine to another. Mount works rapidly but umount of each of the filesystems takes about 20 seconds. Is this normal? Could I have the systems misconfigured in any obvious way? Both machines have x86_64 processors.
Here is the file /etc/exports on the server machine: / amito(ro,sync,no_root_squash) and here is the corresponding mount command on the client machine: # mount -t nfs claremont:/ /mnt/claremont Here is a typical umount command on the client machine: # time umount /mnt/claremont/ real 0m21.029s user 0m0.001s sys 0m0.004s
Any ideas? Thanks - jon
On Fri, 2009-04-03 at 19:08 -0700, Jonathan Ryshpan wrote:
I am mounting a few filesystems from one F10 machine to another. Mount works rapidly but umount of each of the filesystems takes about 20 seconds. Is this normal? Could I have the systems misconfigured in any obvious way? Both machines have x86_64 processors.
Here is the file /etc/exports on the server machine: / amito(ro,sync,no_root_squash) and here is the corresponding mount command on the client machine: # mount -t nfs claremont:/ /mnt/claremont Here is a typical umount command on the client machine: # time umount /mnt/claremont/ real 0m21.029s user 0m0.001s sys 0m0.004s
Any ideas? Thanks - jon
Flushing write data because of sync? Is it equally slow if you just mount and immediately unmount with no intervening activity?
poc
On Fri, 2009-04-03 at 23:11 -0430, Patrick O'Callaghan wrote:
On Fri, 2009-04-03 at 19:08 -0700, Jonathan Ryshpan wrote:
I am mounting a few filesystems from one F10 machine to another. Mount works rapidly but umount of each of the filesystems takes about 20 seconds. Is this normal? Could I have the systems misconfigured in any obvious way? Both machines have x86_64 processors.
Here is the file /etc/exports on the server machine: / amito(ro,sync,no_root_squash) and here is the corresponding mount command on the client machine: # mount -t nfs claremont:/ /mnt/claremont Here is a typical umount command on the client machine: # time umount /mnt/claremont/ real 0m21.029s user 0m0.001s sys 0m0.004s
Any ideas? Thanks - jon
Flushing write data because of sync? Is it equally slow if you just mount and immediately unmount with no intervening activity?
There was not activity between the mount and unmount; no other commands intervened.
jon
Jonathan Ryshpan wrote:
I am mounting a few filesystems from one F10 machine to another. Mount works rapidly but umount of each of the filesystems takes about 20 seconds. Is this normal? Could I have the systems misconfigured in any obvious way? Both machines have x86_64 processors.
Here is the file /etc/exports on the server machine: / amito(ro,sync,no_root_squash) and here is the corresponding mount command on the client machine: # mount -t nfs claremont:/ /mnt/claremont Here is a typical umount command on the client machine: # time umount /mnt/claremont/ real 0m21.029s user 0m0.001s sys 0m0.004s
Any ideas? Thanks - jon
Try strace umount /mnt/claremont/ maybe something interesting comes out.
Best regards.