ZFS install on a partition

[Damien Fleuriot]

On 18 May 2013, at 01:15, Joshua Isom <jrisom at gmail.com> wrote:

> Your hardware raid should be faster than ZFS raid.  Don't use zfs raid because there will be no benefit.  


Self healing much ?

I wouldn't dream of dropping it for a 20mb/s performance increase from a HW controller.

What if the controller derps and writes bad data ?



> You'll get the performance of software raid using CPU time, along with lost space for already backed up data.
> 
> ZFS should work fine.  A lot of the tuning on the wiki page isn't needed anymore, so it's not too bad.  The biggest thing to be careful with is upgrading your zpool, every so often your boot blocks may need updated and if you forget, you can't boot.  You won't upgrade your pool often of course.  Reliability shouldn't be an issue, it's FreeBSD.  ZFS will make it easier to play around with jails, have fun and create a 1000 node beowulf on one system.
> 
> On 5/17/2013 5:24 PM, bsd at todoo.biz wrote:
>> Hi,
>> 
>> I have a question regarding ZFS install on a system setup using an Intel Modular.
>> 
>> This system runs various flavor of FreeBSD and Linux using a shared pool (LUNs).
>> These LUNs have been configured in RAID 6 using the internal controller (LSI logic).
>> 
>> So from the OS point of view there is just a volume available.
>> 
>> 
>> I know I should install a system using HBA and JBOD configuration - but unfortunately this is not an option for this server.
>> 
>> What would you advise ?
>> 
>> 1. Can I use an existing partition and setup ZFS on this partition using a standard Zpool (no RAID).
>> 
>> 2. Should I use any other solution in order to setup this (like full ZFS install on disk using the entire pool with ZFS).
>> 
>> 3. Should I avoid using ZFS since my system is not well tuned and It would be asking for trouble to use ZFS in these conditions.
>> 
>> 
>> P.S. Stability is a must for this system - so I won't die if you answer "3" and tell me to keep on using UFS.
>> 
>> 
>> Thanks.
>> 
>> 
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