On 10/10/11 02:26 PM, Shawn Walker wrote:
On 10/10/11 11:45, Orvar Korvar wrote:
Regarding Containers, are they sparse yet?

And as someone pointed out, S11 is coming in november.
http://www.oracle.com/webapps/events/ns/EventsDetail.jsp?p_eventId=140654&src=7255745&src=7255745&Act=27

Solaris 11 does not support sparse zones.

My understanding is that sparse zones were an implementation artifiact of support for diskless systems and when a split '/' and '/usr' was an expected norm.

-Shawn
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Just thought I'd add a note on sparse zones, not specifically the latest Solaris 11 release. I use Solaris 10 sparse zones extensively, they've been very handy for saving disk space (post install size of ~800 meg versus 2-3 gig). Also, I'm fairly sure that when the same binary is used in multiple zones (not copies of the same binary, but same actual binary through lofs - usually under /usr), the code and static memory pages of the binary only have one copy in memory, allowing for considerable memory savings for things like apache running in multiple zones. The big minus for me was patching - a huge PITA unless you're doing live upgrade.

I've been playing with Solaris 11 express zones, and yep, no such thing as sparse. I originally thought I'd hate not having sparse zones, but I've found that 'pkg' packaging has so many handy features the SVR4 packaging tools didn't that I actually like working with them. Of course, I haven't managed to try doing a major patch install or upgrade yet, but if it's anything like how OpenIndiana works, I'm thrilled.

cheers,
Brian

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Brian Wilson, Solaris SE, UW-Madison DoIT
Room 3114 CS&S            608-263-8047
bfwilson(a)doit.wisc.edu
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