On Wed, Mar 04, 2009 at 02:13:51PM -0700, Lisa Week wrote:
> (pnfs-17-21:/home/lisagab):6 % zfs list -o  
> name,type,used,avail,refer,mountpoint
> NAME                           TYPE           USED  AVAIL  REFER   
> MOUNTPOINT
> rpool                          filesystem    30.0G  37.0G  32.5K  /rpool
> rpool/ROOT                     filesystem    18.2G  37.0G    18K  legacy
> rpool/ROOT/snv_105             filesystem    18.2G  37.0G  6.86G  /
> rpool/ROOT/snv_105/var         filesystem    11.4G  37.0G  11.4G  /var
> rpool/dump                     volume        9.77G  37.0G  9.77G  -
> rpool/export                   filesystem      40K  37.0G    21K  / 
> export
> rpool/export/home              filesystem      19K  37.0G    19K  / 
> export/home
> rpool/pnfsds                   pnfs-dataset    31K  37.0G    15K  -
> rpool/pnfsds/47C80414080A4A42  pnfs-dataset    16K  37.0G    16K  -
> rpool/swap                     volume        1.97G  38.9G  4.40M  -

Note that "filesystem" is really a dataset, so "pnfs-dataset" seems odd.
Could it be made "pnfs-data"? 

> Having the above be the default "zfs list" output is a simple change  
> to make, but I can't commit do doing it unless, of course, there is  
> buy in from the ZFS team.  Does anyone have insight into any known  
> problems it may cause to add the "type" property to the default output  
> or why it was left out in the first place?

It should cause no problems -- scripts should be using -o and -H -- but
I suppose it might.  But I don't see why it's necessary.  It's already
hard to tell if a dataset is a filesystem or a zvol from the default
output when you consider filesystems that are not mounted anywhere, thus
pNFS wouldn't be creating an ambiguity -- the ambiguity exists now and
it's not really a big deal.

Nico
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