ZFS and disk usage

[Volodymyr Kostyrko]

Mark Schouten wrote:
>>> [root at storage ~]# zfs list -o name,used,referenced,usedbychildren,usedbydataset,usedbysnapshots,available,mountpoint,quota,reserv,refquota,refreserv "$@" | sed -r "s/none/   -/g"
>>> NAME                                    USED  REFER  USEDCHILD  USEDDS  USEDSNAP  AVAIL  MOUNTPOINT  QUOTA  RESERV  REFQUOTA  REFRESERV
>>> storage                                1.60T   431G      1.18T    431G         0   138G  /storage        -       -         -          -
>>> storage/av.https-ict.nl..OS               20G    16K          0     16K         0   158G  -               -       -         -        20G
>>> storage/bestandonline.https-ict.nl.OS    20G    16K          0     16K         0   158G  -               -       -         -        20G
>>
>> Let's take this one for example. It's not mounted! It shouldn't be
>> listed in next command output.
>
> They are zvols, they shouldn't be mounted. They're exported by iscsitgt as devices.

As they are zvols they do exists at /dev/zvol/storage/ and not 
/storage/. Where did all that files came from?

Can you post your iscsitgt setup?

>
>> This is not a zfs dataset. This is a file. It has no relevance to named
>> dataset. And it drains space from /storage.
>
> That's absolutely true. There are indeed three files that could be removed.
> bestandonline.https-ict.nl.DATA
> documentatievm.https-ict.nl
> testvm1.https-ict.nl
>
> But still, there is only 16K referenced by the zvols...
>

-- 
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