Date: Thu, 02 Oct 2008 01:02:04 +0200 From: Miroslav Lachman <000.fbsd@quip.cz> To: freebsd-fs@FreeBSD.org Cc: pjd@FreeBSD.org Subject: ZFS inodes issue (0 reported by df -hi) Message-ID: <48E4016C.5000909@quip.cz>
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I am stresstesting ZFS filesystem on my test machine and sometimes see
wrong output of df in inodes columns - reporting zero used inodes when
more than 53 milions are used.
Bellow is df -hi reports taken in few seconds / minutes (there are
running some heavy copying tasks in the background)
[other partitions was stripped for clarity]
root@cage ~/# df -hi
Filesystem Size Used Avail Capacity iused ifree %iused Mounted
tank 364G 362G 1.9G 99% 0 15915 0% /tank
^^^^^^ ^^^^^^
root@cage ~/# df -hi
Filesystem Size Used Avail Capacity iused ifree %iused Mounted
tank 364G 362G 1.9G 99% 53382659 15757 100% /tank
root@cage ~/# df -hi
Filesystem Size Used Avail Capacity iused ifree %iused Mounted
tank 364G 362G 1.9G 99% 53391685 15503 100% /tank
root@cage ~/# df -hi
Filesystem Size Used Avail Capacity iused ifree %iused Mounted
tank 364G 363G 1.3G 100% 0 10965 0% /tank
^^^^^^ ^^^^^^
root@cage ~/# df -hi
Filesystem Size Used Avail Capacity iused ifree %iused Mounted
tank 364G 363G 1.3G 100% 53591981 10817 100% /tank
root@cage ~/# df -hi
Filesystem Size Used Avail Capacity iused ifree %iused Mounted
tank 364G 363G 1.0G 100% 0 8267 0% /tank
^^^^^^ ^^^^^^
root@cage ~/# df -hi
Filesystem Size Used Avail Capacity iused ifree %iused Mounted
tank 364G 363G 1.0G 100% 53672433 8245 100% /tank
Next thing that I do not understand is how ZFS uses inodes? The total
number of inodes (iused+ifree) grows by the time as filesystem is more
and more filled.
Version: FreeBSD 7.0-RELEASE-p2 #0: Wed Jun 18 06:48:16 UTC 2008
root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64
Miroslav Lachman
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