Re: [storage-discuss] Making zfs HA

2009-09-10 Thread Roman Naumenko
I've heard about Nexenta. 
But we're just started to move away from another linux-build appliance, so I 
don't feel like start using another Linux once again.

Hopefully, sometime we'll just order proper hardware from SUN to provide 
clustering or whatever is needed.

Anyway, thanks for suggestions. 
Is it possible to use the code of plugins you've mentioned in Opensolaris? 
Anyway, it's still not a true clustering solution, but sounds promising. 

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Roman
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Re: [storage-discuss] Making zfs HA

2009-09-10 Thread Erast
All public plugins CDDL licensed, however they really depends on NMS and 
component APIs. More public plugins coming soon such us: UPS and 
ClamAV/ZFS - but also, this website can host projects which are related 
to OpenSolaris / Nexenta, such as kernel gate:


http://www.nexentastor.org/projects/nexenta-gate

Roman Naumenko wrote:
I've heard about Nexenta. 
But we're just started to move away from another linux-build appliance, so I don't feel like start using another Linux once again.


Hopefully, sometime we'll just order proper hardware from SUN to provide 
clustering or whatever is needed.

Anyway, thanks for suggestions. 
Is it possible to use the code of plugins you've mentioned in Opensolaris? Anyway, it's still not a true clustering solution, but sounds promising. 


--
Roman

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Re: [storage-discuss] Making zfs HA

2009-09-09 Thread Erast

Hi Roman,

take a look on what NexentaStor is providing:

auto-cdp - a commercial plugin which simplifies significantly ZFS/AVS 
management of primary/secondary hosts


auto-sync - a free service which supports sophisticated ZFS send/recv 
over SSH, NC. Or use send snapshots over RSYNC - which could be ideal 
for clouds. This service can be ideal solution for asynchronous ZFS 
replication


auto-tier - a free service which supports RSYNC tiering. This service 
works really well as a second tier archiving solution. Think of Netapp 
over NFS periodic backups, etc


the development portal is http://www.nexentastor.org - the place where 
NexentaStor open source developers and Partners getting together, so 
this can provide you a free community support for open sourced plugins.


Roman Naumenko wrote:

Hello list,

What are the options for building clustering storage using opensolaris? I'm 
interested in HA solutions.

I tried only one option - AVS replication. Unfortunately, AVS configuration is too complicated. Groups, bitmaps, queues, rcp timeouts, slicing - it's just a nightmare to make it work and support in production when there are more that a couple of pools. And probably it's gonna be slow if there are jbods attached to a storage controller, or will require half of Ethernet ports to replicated more or less reliably. 10Gige interface for it - did anybody try? 


Another option I'm looking into is sending snapshots. But regardless what we've 
heard from sun - it's gonna slow down zfs operations. Creating a snapshot is 
not quick on loaded pool, especially if storage controller manages many pools. 
So, it's probably dozens of minutes delays in transferring snapshots over to a 
standby server.

--
Roman

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