zfs discuss - May 2008 - [osol-help] >1TB ZFS thin provisioned partition prevents Opensolaris from booting.

On Fri, May 30, 2008 at 10:37 AM, Akhilesh Mritunjai
<mritun+opensolaris at gmail.com> wrote:
> I think it''s right. You''d have to move to a 64 bit
kernel. Any reasons to stick to a 32 bit
> kernel ?
My reason would be lack of 64bit hardware :(
Is this an iscsi specific limitation? or will any multi-TB pool have
problems on 32bit hardware?
If so whats the upper bound to pool size on 32bit?

-- 
Hugh Saunders

On Fri, May 30, 2008 at 7:07 AM, Hugh Saunders <hugh at mjr.org>
wrote:
> On Fri, May 30, 2008 at 10:37 AM, Akhilesh Mritunjai
> <mritun+opensolaris at gmail.com> wrote:
>> I think it''s right. You''d have to move to a 64 bit
kernel. Any reasons to stick to a 32 bit
>> kernel ?
>
> My reason would be lack of 64bit hardware :(
> Is this an iscsi specific limitation? or will any multi-TB pool have
> problems on 32bit hardware?
> If so whats the upper bound to pool size on 32bit?
>
I''ve noticed its only a problem of per-LUN sizes on 32bit Solaris
clients trying to import them into ZFS. You can build a ZFS volume of
any* size as long as the underlying LUNs are less than 1.4TB each I
believe. Or so I''ve seen by experimentation. * is because the total
pool size and the the per-LUN size was simply something that worked
for me, but in the end, I did go w/ 64-bit processors as the memory
crunch that ZFS has makes 32bit unusable for any heavy use beyond .5TB
of disk, again by observation.

> --
> Hugh Saunders
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