No more free space after upgrading to 10.1 and zpool upgrade

[Dylan Leigh]

On Sun, Nov 16, 2014 at 04:10:28PM +0100, Olivier Cochard-Labbé wrote:
> On Sun, Nov 16, 2014 at 9:01 AM, Dylan Leigh <fbsd at dylanleigh.net> wrote:
> 
> > Could you provide some other details about the pool structure/config,
> > including the output of "zpool status"?
> >
> It's a raidz1 pool build with 5 SATA 2TB drives, and there are 5 zvolumes
> without advanced features (no compression, no snapshot, no de-dup, etc...).
> Because it's a raidz1 pool, I know that FREE space reported by a "zpool
> list" include redundancy overhead and is bigger than AVAIL space reported
> by a "zfs list".
> 
> I've moved about 100GB (on hundred GigaByte) of files and after this step
> there were only 2GB (two GigaByte) of Free space only: How is it possible ?

The RAIDZ bit might be significant, if it isn't calculating the
overhead properly on old pools for some reason.

What were the zpool and FreeBSD versions before/after the upgrade? The
output of "zpool history -i storage"/"zdb -h storage" might shed light
on any changes.

Also try "zdb -bb" - this will go through all block pointers and
verify there are no leaks; unfortunately it might take as long as a
scrub. :(

-- Dylan

-- 
Dylan Leigh // VU# s4081906 // www.dylanleigh.net