Date: Sun, 5 Jul 2009 00:56:21 +0300 From: Dan Naumov <dan.naumov@gmail.com> To: freebsd-fs@freebsd.org Subject: ZFS and df weirdness Message-ID: <cf9b1ee00907041456w590b3bcdie4829af226159e2@mail.gmail.com> In-Reply-To: <cf9b1ee00907041455v57b1e1eatf7b4cf0a060b938c@mail.gmail.com> References: <cf9b1ee00907041455v57b1e1eatf7b4cf0a060b938c@mail.gmail.com>
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Hello list. I have a single 2tb disk used on a 7.2-release/amd64 system with a small part of it given to UFS and most of the disk given to a single "simple" zfs pool with several filesystems without redundancy. I've noticed a really weird thing regarding what "df" reports regarding the "total space" of one of my filesystems: atom# zpool list NAME =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0SIZE =A0 =A0USED =A0 AVAIL =A0 = =A0CAP =A0HEALTH =A0 =A0 ALTROOT tank =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 1.80T =A0 =A0294G =A0 1.51T =A0 = =A015% =A0ONLINE =A0 =A0 - atom# zfs list NAME =A0 =A0 =A0 =A0 =A0 =A0 =A0USED =A0AVAIL =A0REFER =A0MOUNTPOINT tank =A0 =A0 =A0 =A0 =A0 =A0 =A0294G =A01.48T =A0 =A018K =A0none tank/DATA =A0 =A0 =A0 =A0 292G =A01.48T =A0 292G =A0/DATA tank/home =A0 =A0 =A0 =A0 216K =A01.48T =A0 =A021K =A0/home tank/home/jago =A0 =A0132K =A01.48T =A0 132K =A0/home/jago tank/home/karni =A0 =A062K =A01.48T =A0 =A062K =A0/home/karni tank/usr =A0 =A0 =A0 =A0 1.33G =A01.48T =A0 =A018K =A0none tank/usr/local =A0 =A0455M =A01.48T =A0 455M =A0/usr/local tank/usr/obj =A0 =A0 =A0 18K =A01.48T =A0 =A018K =A0/usr/obj tank/usr/ports =A0 =A0412M =A01.48T =A0 412M =A0/usr/ports tank/usr/src =A0 =A0 =A0495M =A01.48T =A0 495M =A0/usr/src tank/var =A0 =A0 =A0 =A0 =A0320K =A01.48T =A0 =A018K =A0none tank/var/log =A0 =A0 =A0302K =A01.48T =A0 302K =A0/var/log atom# df Filesystem =A0 =A0 =A01K-blocks =A0 =A0 =A0 Used =A0 =A0 =A0Avail Capacity = =A0Mounted on /dev/ad12s1a =A0 =A0 =A016244334 =A0 1032310 =A0 13912478 =A0 =A0 7% =A0 = =A0/ devfs =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A01 =A0 =A0 =A0 =A0 1 =A0 =A0 = =A0 =A0 =A00 =A0 100% =A0 =A0/dev linprocfs =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A04 =A0 =A0 =A0 =A0 4 =A0 =A0 =A0 = =A0 =A00 =A0 100% =A0 =A0/usr/compat/linux/proc tank/DATA =A0 =A0 =A0 1897835904 306397056 1591438848 =A0 =A016% =A0 =A0/DA= TA tank/home =A0 =A0 =A0 1591438848 =A0 =A0 =A0 =A0 0 1591438848 =A0 =A0 0% = =A0 =A0/home tank/home/jago =A01591438976 =A0 =A0 =A0 128 1591438848 =A0 =A0 0% =A0 =A0/= home/jago tank/home/karni 1591438848 =A0 =A0 =A0 =A0 0 1591438848 =A0 =A0 0% =A0 =A0/= home/karni tank/usr/local =A01591905024 =A0 =A0466176 1591438848 =A0 =A0 0% =A0 =A0/us= r/local tank/usr/obj =A0 =A01591438848 =A0 =A0 =A0 =A0 0 1591438848 =A0 =A0 0% =A0 = =A0/usr/obj tank/usr/ports =A01591860864 =A0 =A0422016 1591438848 =A0 =A0 0% =A0 =A0/us= r/ports tank/usr/src =A0 =A01591945600 =A0 =A0506752 1591438848 =A0 =A0 0% =A0 =A0/= usr/src tank/var/log =A0 =A01591439104 =A0 =A0 =A0 256 1591438848 =A0 =A0 0% =A0 = =A0/var/log atom# df -h Filesystem =A0 =A0 =A0 =A0 Size =A0 =A0Used =A0 Avail Capacity =A0Mounted o= n /dev/ad12s1a =A0 =A0 =A0 =A015G =A0 =A01.0G =A0 =A0 13G =A0 =A0 7% =A0 =A0/ devfs =A0 =A0 =A0 =A0 =A0 =A0 =A01.0K =A0 =A01.0K =A0 =A0 =A00B =A0 100% = =A0 =A0/dev linprocfs =A0 =A0 =A0 =A0 =A04.0K =A0 =A04.0K =A0 =A0 =A00B =A0 100% =A0 = =A0/usr/compat/linux/proc tank/DATA =A0 =A0 =A0 =A0 =A01.8T =A0 =A0292G =A0 =A01.5T =A0 =A016% =A0 = =A0/DATA tank/home =A0 =A0 =A0 =A0 =A01.5T =A0 =A0 =A00B =A0 =A01.5T =A0 =A0 0% =A0 = =A0/home tank/home/jago =A0 =A0 1.5T =A0 =A0128K =A0 =A01.5T =A0 =A0 0% =A0 =A0/home= /jago tank/home/karni =A0 =A01.5T =A0 =A0 =A00B =A0 =A01.5T =A0 =A0 0% =A0 =A0/ho= me/karni tank/usr/local =A0 =A0 1.5T =A0 =A0455M =A0 =A01.5T =A0 =A0 0% =A0 =A0/usr/= local tank/usr/obj =A0 =A0 =A0 1.5T =A0 =A0 =A00B =A0 =A01.5T =A0 =A0 0% =A0 =A0/= usr/obj tank/usr/ports =A0 =A0 1.5T =A0 =A0412M =A0 =A01.5T =A0 =A0 0% =A0 =A0/usr/= ports tank/usr/src =A0 =A0 =A0 1.5T =A0 =A0495M =A0 =A01.5T =A0 =A0 0% =A0 =A0/us= r/src tank/var/log =A0 =A0 =A0 1.5T =A0 =A0256K =A0 =A01.5T =A0 =A0 0% =A0 =A0/va= r/log Considering that every single filesystem is part of the exact same pool, with no custom options whatsoever used during filesystem creation (except for mountpoints), why is the size of tank/DATA 1.8T while the others are 1.5T? - Sincerely, Dan Naumov
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