zfs discuss - Aug 2010 - How to identify user-created zfs filesystems?

Folks,

In my application, I need to present user-created filesystems. For my test, I
created a zfs pool called mypool and two file systems called cifs1 and cifs2.
However, when I run "zfs list," I see a lot more entries:

# zfs list
NAME                     USED  AVAIL  REFER  MOUNTPOINT
mypool                  1.31M  1.95G    33K  /volumes/mypool
mypool/cifs1            1.12M  1.95G  1.12M  /volumes/mypool/cifs1
mypool/cifs2              44K  1.95G    44K  /volumes/mypool/cifs2
syspool                 3.58G  4.23G  35.5K  legacy
syspool/dump             716M  4.23G   716M  -
syspool/rootfs-nmu-000  1.85G  4.23G  1.36G  legacy
syspool/rootfs-nmu-001  53.5K  4.23G  1.15G  legacy
syspool/swap            1.03G  5.19G  71.4M  -

I just need to present cifs1 and cifs2 to the user. Is there a property on the
filesystem that I can use to determine user-created filesystems?

Thank you in advance for your help.

Regards,
Peter
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Hi Peter,

I don''t think we have any property that determines who created
the file system.

Would this work instead:

# zfs list -r mypool
NAME           USED  AVAIL  REFER  MOUNTPOINT
mypool         172K   134G    33K  /mypool
mypool/cifs1    31K   134G    31K  /mypool/cifs1
mypool/cifs2    31K   134G    31K  /mypool/cifs2

Or, take a look at user properties, which is text that
you can apply to a file system for whatever purpose you
choose.

Thanks,

Cindy


On 08/04/10 12:55, Peter Taps wrote:
> Folks,
> 
> In my application, I need to present user-created filesystems. For my test,
I created a zfs pool called mypool and two file systems called cifs1 and cifs2.
However, when I run "zfs list," I see a lot more entries:
> 
> # zfs list
> NAME                     USED  AVAIL  REFER  MOUNTPOINT
> mypool                  1.31M  1.95G    33K  /volumes/mypool
> mypool/cifs1            1.12M  1.95G  1.12M  /volumes/mypool/cifs1
> mypool/cifs2              44K  1.95G    44K  /volumes/mypool/cifs2
> syspool                 3.58G  4.23G  35.5K  legacy
> syspool/dump             716M  4.23G   716M  -
> syspool/rootfs-nmu-000  1.85G  4.23G  1.36G  legacy
> syspool/rootfs-nmu-001  53.5K  4.23G  1.15G  legacy
> syspool/swap            1.03G  5.19G  71.4M  -
> 
> I just need to present cifs1 and cifs2 to the user. Is there a property on
the filesystem that I can use to determine user-created filesystems?
> 
> Thank you in advance for your help.
> 
> Regards,
> Peter

You can use ''zpool history -l syspool'' to show the username of
the person
who created the dataset.  The history is in a ring buffer, so if too many 
pool operations have happened since the dataset was created, the 
information is lost.


On Wed, 4 Aug 2010, Peter Taps wrote:
> Folks,
>
> In my application, I need to present user-created filesystems. For my test,
I created a zfs pool called mypool and two file systems called cifs1 and cifs2.
However, when I run "zfs list," I see a lot more entries:
>
> # zfs list
> NAME                     USED  AVAIL  REFER  MOUNTPOINT
> mypool                  1.31M  1.95G    33K  /volumes/mypool
> mypool/cifs1            1.12M  1.95G  1.12M  /volumes/mypool/cifs1
> mypool/cifs2              44K  1.95G    44K  /volumes/mypool/cifs2
> syspool                 3.58G  4.23G  35.5K  legacy
> syspool/dump             716M  4.23G   716M  -
> syspool/rootfs-nmu-000  1.85G  4.23G  1.36G  legacy
> syspool/rootfs-nmu-001  53.5K  4.23G  1.15G  legacy
> syspool/swap            1.03G  5.19G  71.4M  -
>
> I just need to present cifs1 and cifs2 to the user. Is there a property on
the filesystem that I can use to determine user-created filesystems?
>
> Thank you in advance for your help.
>
> Regards,
> Peter
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> This message posted from opensolaris.org
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> zfs-discuss at opensolaris.org
> http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
>

Regards,
markm

Thank you all for your help. It turns out that I just need to ignore the ones
that have their mount points either not defined or are marked as
"legacy."

It is good to learn about history command. Could come in handy.

Regards,
Peter
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This message posted from opensolaris.org