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Date:      Tue, 2 Oct 2007 05:28:08 +0000 (UTC)
From:      Duane Hill <d.hill@yournetplus.com>
To:        Zbigniew Szalbot <zszalbot@gmail.com>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: determining the space used in / partition
Message-ID:  <20071002052548.S57595@duane.dbq.yournetplus.com>
In-Reply-To: <94136a2c0710012223q64102a41y93f3f983fcfc0137@mail.gmail.com>
References:  <94136a2c0710012212x506ebc0ajf76ef69ec2f36720@mail.gmail.com>  <20071002051809.R57595@duane.dbq.yournetplus.com> <94136a2c0710012223q64102a41y93f3f983fcfc0137@mail.gmail.com>

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On Tue, 2 Oct 2007 at 07:23 +0200, zszalbot@gmail.com confabulated:

> Hello again,
>
>>> Through df I realized my / partiotion is out of space:
>>> Filesystem  1K-blocks     Used    Avail Capacity  Mounted on
>>> /dev/ad0s1a    198126   196070   -13794   108%    /
>>> devfs               1        1        0   100%    /dev
>>> /dev/ad0s1e  44511308  4217762 36732642    10%    /usr
>>> /dev/ad0s1d  30462636  3210580 24815046    11%    /var
>>> devfs               1        1        0   100%    /var/named/dev
>>> /dev/da0s1c  75685352 34308200 35322324    49%    /mnt/usbck
>>>
>>> How can I determine what occupies the space in it? That is, it is not
>>> big as you can see. So I issued:
>>> du -hs /
>>> but it was taking ages (I am not sure but maybe du -hs counts all
>>> directories on the HD?
>>>
>>> Anyway, I do not really know where to look what has eaten the / space.
>>> Were it for /usr or /var,  it would be obvious to me where to look for
>>> information.
>>>
>>> Many thanks!
>>
>> I don't see you have defined a /tmp partition. Perhaps /tmp is taking up
>> all the space. Try:
>>
>>    du -h /tmp
>>
>> and see how much /tmp is taking up.
> du -hs /tmp
> 1.4M    /tmp
>
> du -hs /
> 40GB
>
> One thing that comes to my mind. Each Sunday I have a script which
> makes a full dump of the HD to a back-up USB drive. Last weekend
> someone cleaining the computer room, must have accidentally powered
> off the USB drive. As a result, the dump has not been completed
> because the USB drive was not mounted at that time. I use cron for
> this task. Does it matter could have caused this?

If the '-L' switch is used (telling dump it is dumping a live file system) 
it will first dump everything into a .snap directory before performing the 
dump. What does:

   du -hs /.snap

give for a result?

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