On Thu, 2011-04-21 at 14:49 +0900, Daichi GOTO wrote: > It is adjustable with sysctl value 'vfs.unionfs.recursive_limit' as > multiple mounts limits. The default value is 1 and it means two-layered ok. > Max value of 'vfs.unionfs.recursive_limit' is 8, it is heuristic value. > I couldn't get a system panic unless 'vfs.unionfs.recursive_limit' is over 8. >
Hmm, 8 is not enough for me, i need more :) On the other hand, why do we need recursion in unionfs_statfs at all? IMHO recursion in kernel is evil because it has a potencial of resource exhaustion. This recursion in unionfs_statfs is used to gather statistic (some of which is faked according to comments in the procedure) why not replace recursion with cycle? (I'm not skilled enough do do that :) and a feature request: it would be great if it was possible to umount one of multiple unionfs: mount -t unionfs /var/ftpdata1 /var/ftp mount -t unionfs /var/ftpdata2 /var/ftp how to unmount /var/ftpdata1 only? _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
