[PC-BSD Dev] ZFS 'Device Busy' error
claudio at hpgcc3.org
Wed Jul 10 16:17:10 PDT 2013
Following up on this issue:
I've found that the process that is keeping the filesystems locked is
gam_server is a file monitoring deamon used to get notifications of file
From what I read, gam_server needs to, by design (this is
FreeBSD-specific), obtain a file descriptor for every file on every
directory it monitors, and keep the file descriptor open forever. This
is in order to receive notifications of file changes.
As a side effect, when it starts it gets a file descriptor on the ZFS
volume, effectively "locking" it.
Disabling it would be bad for the GUI's, since at least XFCE is using it
to discover changes in folders.
I guess I'll have to work around it with a nasty hack, get gam_server's
process ID, then use 'fuser' to make sure the only process using the
filesystem is gam_server, then issue a 'zfs unmount -f'.
Does anyone know of another solution? Is there any other alternative to
PS: This gam_server deamon is evil, keeps so many descriptors open...
what a waste of resources.
More information about the Dev