HAMMER2 snapshots and other help

[George]

Hi Daniel,

On Wed, 6 Mar 2019 08:57:35 +0100
Daniel Bilik <ddb at neosystem.org> wrote:

> Hi, George.
> 
> On Tue, 5 Mar 2019 21:16:50 -0500
> George <g.lister at nodeunit.com> wrote:
> 
> > I am currently struggling to figure out how to make and use
> > snapshots. I saw the command:
> > hammer2 snapshot /home/mydir /snaps/mydir.s01
> > which I thought would create a snapshot under /snaps/mydir.01 but
> > that's not what happens...  
> 
> No, first parameter to "snapshot" command is a path to filesystem you
> want to snapshot, but second parameter is just a label you want to
> assign it. See hammer2(8) for details.
> 
> So you create a snapshot for example like this:
> 
> hammer2 snapshot /home/mydir mydir_test_snapshot
> 
> > how does one view the contents of a snapshot? How can I list them?  
> 
> Find a snapshot of your interest with "hammer2 pfs-list" and then just
> mount it somewhere using the label:
> 
> mount_hammer2 <hammer2-block-device>@<label> /somewhere

So the block device is the one for the original PFS I created the
snapshot from, say I have my disk at /dev/serno/GFSA.s1a I would just
add the snapshot with the above syntax and mount it anywhere in the
tree:

mount_hammer2 /dev/serno/GFSA.s1a@<label> /snap01_usr_lib

Will give it a shot.
Thanks very much!
George

> 
> --
> 						Daniel Bilik