Date: Thu, 17 Feb 2011 11:52:04 +1300 From: Andrew Thompson <andy@fud.org.nz> To: freebsd-fs@freebsd.org Subject: zfs directory listing Message-ID: <AANLkTinwRumkvSn7wfh4a%2BeNJyFoFDyMMKjk7GOSLAXc@mail.gmail.com>
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Hi,
I have a zfs file system on 8.1-RELEASE amd64 which as a large number
of files in /var/spool/mqueue. loader.conf has vfs.zfs.arc_max=2G for
an 8G box.
NAME USED AVAIL REFER MOUNTPOINT
tank/jails/xena 46.0G 779G 41.8G /jails/xena
Here is the listing of /jails/xena/var/spool,
drwxrwx--- 2 smmsp smmsp 34 Feb 17 11:25 clientmqueue
drwxrwxr-x 2 uucp dialer 3 Feb 17 11:18 lock
drwxr-xr-x 2 root daemon 2 May 1 2009 lpd
drwx------ 2 mailnull daemon 2 Dec 28 2004 milter-regex
drwxr-xr-x 2 root daemon 522824 Feb 17 11:10 mqueue
drwx------ 2 root daemon 2 May 1 2009 opielocks
drwxr-xr-x 3 root daemon 3 May 1 2009 output
drwxr-xr-x 2 spamd spamd 2 Jun 29 2005 spamd
mqueue has a link count of 522824. I can not list the contents of this
directory, when I do the number of read IOPS sits > 100 and it will
never complete
# zpool iostat 1
capacity operations bandwidth
pool used avail read write read write
---------- ----- ----- ----- ----- ----- -----
tank 127G 793G 340 326 1.23M 1.83M
tank 127G 793G 146 0 937K 0
tank 127G 793G 135 0 870K 0
tank 127G 793G 136 0 875K 0
tank 127G 793G 125 0 812K 0
tank 127G 793G 135 0 869K 0
...
if I ^C the ls then the read ops drops back to zero. If I leave a `ls`
or `find /var/spool/mqueue` running then they will churn the disks
indefinitely without producing output.
Andrew
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