[OpenIndiana-discuss] Finding the "last" snapshot for a zfs volume

[Discussion list for OpenIndiana]

On Wed, 14 May 2014, Discussion list for OpenIndiana wrote:

>> From: Discussion list for OpenIndiana [mailto:openindiana-
>> discuss at openindiana.org]
>>
>> It seems that someone should bring up this issue on the zfs list.  All
>> of the proposed solutions have involved 'tail -1'.  This is a
>> non-scalable solution which does not work efficiently for any number
>> of snapshots.
>
> What's wrong with it?

If there are a million snapshots, a million lines of output need to be 
piped through 'tail -1' until that last line is found.  This is very 
wasteful and non-scalable.  It just gets slower and slower the more 
snapshots there are.

Bob
-- 
Bob Friesenhahn
bfriesen at simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/