> So the solution is to never get more than 90% full disk space
while that's true, its not Henrik's main discovery. Henrik points out that 1/4 of the arc is used for metadata, and sometime that's not enough.. if echo "::arc" | mdb -k | egrep ^size isn't reaching echo "::arc" | mdb -k | egrep "^c " and you are maxing out your metadata space, check: echo "::arc" | mdb -k | grep meta_ one can set the metadata space (1G in this case) with: echo "arc_meta_limit/Z 0x4000000" | mdb -kw So while Henrik's FS had some fragmentation, 1/4 of c_max wasn't enough metadata arc space for number of files in /var/pkg/download good find Henrik! Rob _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss