Question about PFS default partition choice on mount

[George]

On Fri, 26 Apr 2019 16:54:42 -0400
George <g.lister at nodeunit.com> wrote:

> Hi guys,
> 
> I have a question on how to manage partitions with the DragonFly and
> Hammer2.
> 
> My goal is to replicate a ZFS I had with FreeBSD so I would like to
> create individual PFSes for all my NFS exports so I can manage
> storage, snapshots, backups etc at that level.
> 
> I installed 5.4.2 and choose to leave everything in the partition the
> same with the exception of making / 100GB and /build 100GB and
> dedicating the rest of my large disk to /exp so I ended up with:
> 
> df -h:
> Filesystem                     Size   Used  Avail Capacity  Mounted on
> serno/ZAD2RVKD.s1d            99.3G   637M  98.7G     1%    /
> devfs                         1024B  1024B     0B   100%    /dev
> /dev/serno/ZAD2RVKD.s1a       1022M   186M   754M    20%    /boot
> /dev/serno/ZAD2RVKD.s1e at DATA  99.3G  3072K  99.3G     0%    /build
> /dev/serno/ZAD2RVKD.s1f at DATA  5303G  64.0K  5303G     0%    /exp
> /build/usr.obj                99.3G  3072K  99.3G     0%    /usr/obj
> /build/var.crash              99.3G  3072K  99.3G     0%    /var/crash
> /build/var.cache              99.3G  3072K  99.3G     0%    /var/cache
> /build/var.spool              99.3G  3072K  99.3G     0%    /var/spool
> /build/var.log                99.3G  3072K  99.3G     0%    /var/log
> /build/var.tmp                99.3G  3072K  99.3G     0%    /var/tmp
> tmpfs                         1926M     0B  1926M     0%    /tmp
> procfs                        4096B  4096B     0B   100%    /proc
> 
> I created myself a PFS like so:
> 
> h2 pfs-create exp-backup
> 
> hammer2 pfs-list
> Type        ClusterId (pfs_clid)                 Label
> MASTER      0cbef96e-685a-11e9-8a8c-55bf647a66bb exp-backup
> MASTER      5ce0575e-6839-11e9-86d4-55bf647a66bb ROOT
> MASTER      5ce056a8-6839-11e9-86d4-55bf647a66bb LOCAL
> 
> ... and then tried to mount it into my large partition allocation
> which fails with 'Invalid arguement' because the PFS label is not
> found
> 
> mount_hammer2 /dev/serno/ZAD2RVKD.s1f at DATA@exp-backup /exp/backup/
> mount: : Invalid argument
> 
> ls /dev/serno/
> ZAD2RVKD	ZAD2RVKD.s1	ZAD2RVKD.s1a
> ZAD2RVKD.s1b	ZAD2RVKD.s1d	ZAD2RVKD.s1e
> ZAD2RVKD.s1f
> 
> I am about to reinstall and put my /exp partition right after root
> and /build last and see if then I can mount in the larger partition as
> I want, but was wondering if there is something else I can do to
> end-up with a PFS being mounted on the right partition.
> 
> Thanks in advance!
> George
> 
> 

This was missing:

mount_hammer2 /dev/serno/ZAD2RVKD.s1d at exp-backup /exp/backup/

df -h
...
/dev/serno/ZAD2RVKD.s1d at exp-backup  99.3G   637M  98.7G
1%    /exp/backup
...

This is what tells me it went not where I wanted it to go...
Thanks.
George