YIKES! I am going to need some help

Baho Utot baho-utot at columbus.rr.com
Mon Sep 12 20:25:52 UTC 2016

On 09/12/16 03:19, Matthew Seaman wrote:
> On 11/09/2016 15:41, Baho Utot wrote:
>> - Install 4  1TB hard drives for ZFS raid Z array.
>> - Load FreeBSD ( current USB image ) from USB using ZFS.
>>          Will the installer do this or do I need to tweak it?
> The installer will create a RAIDZ array for you no problem, and FreeBSD
> will be able to boot from it.


>>          Will my present 10.3 version still function while I am setting
>> this up?
> I don't see why not.  I'm not sure how you're intending to switch
> between each of these three different OSes while you're building your
> RAIDZ based system -- normally you'ld use something like grub, but given
> this is only intended to be a temporary state, you probably don't want
> the bother of setting that up.

I boot to win7 and freebsd using the freebsd loader.  Just did not know 
if it would automatically find the Raidz and boot

It needs to boot to win7 10.3 and the new 11.x as it will take me some 
time to get the 11.x going and all the ports built.
After I get it functional I will mount the UFS 10.3 file systems and 
copy what I need over to 11.x

> If you want to copy files between the existing 10.3 setup and the new
> 11.0 RAIDZ then it will be pretty trivial to boot into one of those OSes
> and mount the filesystems from the other -- but there are pitfalls to
> booting into 10.3 and trying to mount the 11.0 files:
> - When you import the 11.0 ZFS remember to use the '-R /mnt' flags, or
> it will overlay your exising root directory
> - As I recall, there are some new feature flags in ZFS under 11.0 that
> aren't supported in 10.x, which you need to avoid using to maintain
> compatibility.  See zpool-features(7) for the full details.
> Best to render the whole question moot and boot into 11.0 and then mount
> any 10.3 filesystems onto that.
>>          I will have win7 on the first primary drive an SSD and then
>> remove the second drive after I get this going.
>>          I want to create filesystems on the Raid Z array like /usr/home
>> /usr/ports /usr/ports/packages etc.
>>              You can suggest any other filesystems if it will be helpful.
> One thing you might want to consider is using some space on your SSDs
> for a separate ZIL and/or ARC device -- this can give you a significant
> performance boost, although how much does depend greatly on your
> workload and mix of files.

Will have to look into that

> The other thing when creating ZFSes is to resist the temptation to make
> huge numbers of them.  Just because you can, doesn't mean that you
> should.  Given the shared storage nature of ZFS, you really only need a
> separate ZFS as a hook to apply different flags to a specific tree of
> files.  On the whole, it is easier to manage one big ZFS than many small
> ones.
> 	Cheers,
> 	Matthew
Just want to separate some of the filesystems thats all


More information about the freebsd-questions mailing list