Date: Fri, 27 Sep 2013 14:29:38 +0200 From: Attila Nagy <bra@fsn.hu> To: freebsd-fs@FreeBSD.org Subject: zfs: the exponential file system from hell Message-ID: <52457A32.2090105@fsn.hu>
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Hi, Did anyone try to fill a zpool with multiple zfs in it and graph the space accounted by df and zpool list? If not, here it is: https://picasaweb.google.com/104147045962330059540/FreeBSDZfsVsDf#5928271443977601554 The zpool in question: NAME STATE READ WRITE CKSUM mnt ONLINE 0 0 0 raidz2-0 ONLINE 0 0 0 da1 ONLINE 0 0 0 da2 ONLINE 0 0 0 da3 ONLINE 0 0 0 da4 ONLINE 0 0 0 raidz2-1 ONLINE 0 0 0 da5 ONLINE 0 0 0 da6 ONLINE 0 0 0 da7 ONLINE 0 0 0 da8 ONLINE 0 0 0 raidz2-2 ONLINE 0 0 0 da9 ONLINE 0 0 0 da10 ONLINE 0 0 0 da11 ONLINE 0 0 0 da13 ONLINE 0 0 0 And the zfs-es on it: NAME USED AVAIL REFER MOUNTPOINT mnt 23.3G 0 53.8K /mnt mnt/p1 3.89G 0 3.89G /mnt/p1 mnt/p2 3.89G 0 3.89G /mnt/p2 mnt/p3 3.89G 0 3.89G /mnt/p3 mnt/p4 3.89G 0 3.89G /mnt/p4 mnt/p5 3.89G 0 3.89G /mnt/p5 mnt/p6 3.89G 0 3.89G /mnt/p6 I have evenly filled the six zfs in 1/100th percents of the full space available, and graphed the results of zpool list's capacity and df's capacity. The x scale is the real space usage in percents. It's quite annoying when df says the file systems are 20% full, while in reality, they are at 60%. Any chance that it will be solved?
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