Date: Wed, 16 Aug 2017 07:13:18 -0500 From: "Dean E. Weimer" <dweimer@dweimer.net> To: Johan Helsingius <julf@julf.com> Cc: freebsd-questions@freebsd.org, owner-freebsd-questions@freebsd.org Subject: Re: ZFS and free space Message-ID: <8aa7a9097f9145db160ace4363c8c3e2@dweimer.net> In-Reply-To: <cc88861f-944c-3640-c746-54d3d51117b2@julf.com> References: <c4f933a5-e9c7-6df4-b443-dc3f4e964827@julf.com> <a4854ec0e37de576e636dac7f468e975@dweimer.net> <c9b62f68-199b-eafd-79bf-e47c44885f9a@julf.com> <126aaff1-58af-f7d5-b47e-c7d894b45606@gmail.com> <a179f76a-19ef-7576-4fc5-55ed5ce348b2@julf.com> <CADqw_g%2B4vLrS0oUdyLUgxZDTJy=z88fP-wC-EYwydSuAH3WtOA@mail.gmail.com> <db074f22-dc8b-5407-fb8f-6253851ce0a8@julf.com> <20170816105759.GA16608@vps.markoturk.info> <cc88861f-944c-3640-c746-54d3d51117b2@julf.com>
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On 2017-08-16 7:02 am, Johan Helsingius wrote:
> Marko,
>
>> What is the output of
>> $ zfs list -o name,mountpoint,mounted,used,refer,ratio,compress
>
> NAME MOUNTPOINT MOUNTED USED REFER RATIO
> COMPRESS
> zroot /zroot yes 10.2T 140K 1.07x
> lz4
> zroot/ROOT none no 3.01G 140K 2.61x
> lz4
> zroot/ROOT/default / yes 3.01G 3.01G 2.61x
> lz4
> zroot/home /home/storage yes 5.98T 5.98T 1.06x
> lz4
> zroot/tmp /tmp yes 163K 163K 1.01x
> lz4
> zroot/usr /usr no 4.17T 140K 1.09x
> lz4
> zroot/usr/home /usr/home yes 4.17T 4.17T 1.09x
> lz4
> zroot/usr/ports /usr/ports yes 1.26G 1.26G 2.19x
> lz4
> zroot/usr/src /usr/src yes 140K 140K 1.00x
> lz4
> zroot/var /var no 1.43M 140K 4.82x
> lz4
> zroot/var/audit /var/audit yes 140K 140K 1.00x
> lz4
> zroot/var/crash /var/crash yes 140K 140K 1.05x
> lz4
> zroot/var/log /var/log yes 767K 767K 5.61x
> lz4
> zroot/var/mail /var/mail yes 140K 140K 1.00x
> lz4
> zroot/var/tmp /var/tmp yes 140K 140K 1.00x
> lz4
>
> So I guess it is zroot/usr (/usr) that isn't mounted for
> some reason but holds a bunch of stuff!
>
> Julf
zroot/usr contains the datasets under it even if not mounted, its used
to pass inherited information to the data sets under it.
Its the symbolic link issue, they are hiding data.
you have two symbolic links mentioned earlier:
# file /home
/home: symbolic link to usr/home
# ls -id /usr/home/storage/ /home/storage
18 /home/storage 18 /usr/home/storage/
the zroot/home is mounted to /home/storage
and zroot/usr/home is mounted to /usr/home
There is something funny going on here, use:
du -shx /home/*
the -x will keep it from showing a different file system
If it still shows /usr/home/storage as 4.2T then the zroot/home data set
has a hidden storage folder
If it changes size the zroot/usr/home dataset has a hidden storage
folder that you are not seeing
--
Thanks,
Dean E. Weimer
http://www.dweimer.net/
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