Re: [MirageOS-devel] Use local Irmin repo as Canopy backend

[Carlos Oviedo <psxlco@xxxxxxxxxxxxxxxxxxxxxxx>]

Thanks for your reply, I'm having a look at the irmin issue mentioned.

I'm using the following versions of git and irmin:

~$ opam list | grep git
git                             1.8.0  Git format and protocol in pure OCaml
git-unix                        1.7.1  Virtual package to install and 
configure
mirage-git                      1.6.0  Virtual package to install the 
`git.mirag
~$ opam list | grep irmin
irmin                          0.12.0  A distributed database that 
follows the s
irmin-unix                     0.12.0  Virtual package for Irmin's Unix 
support
irmin-watcher                   0.2.0  Portable Irmin watch backends 
using FSeve

On 15/02/17 13:48, Hannes Mehnert wrote:
> hello,
>
> On 10/02/2017 16:33, Carlos Oviedo wrote:
> > I'm a bit lost over here, could anyone point me to the right
> > documentation to use the Irmin backend for Canopy instead of using a Git
> > repository?
> I guess nobody has done yet ;)
>
> > ~/workspace/Canopy$ ./mir-canopy -r
> > 2017-02-10 16:30.15: ERR [git.mirage] Git_mirage.IO.read_exactly:
> > expecting 4, got 0
> > 2017-02-10 16:30.15: WRN [canopy-store] failed pull (Failure
> > "Git_mirage.IO.read_exactly: expecting 4, got 0")
> Looks like https://github.com/mirage/irmin/issues/379
>
> > 2017-02-10 16:30.15: INF [git.memory] Reading HEAD
> > 2017-02-10 16:30.15: DBG [irmin.bc] map [".config","uuid"]
> > 2017-02-10 16:30.15: DBG [irmin.bc] read_head_commit
> > 2017-02-10 16:30.15: INF [git.memory] Reading refs/heads/master
> > 2017-02-10 16:30.15: DBG [git.value] add_inflated
> > 2017-02-10 16:30.15: INF [git.memory] Writing
> > 4b825dc642cb6eb9a060e54bf8d69288fbee4904
> > 2017-02-10 16:30.15: DBG [irmin.node] read_contents [".config","uuid"]
> > 2017-02-10 16:30.15: DBG [irmin.node] read_node_exn
> > ["4b825dc642cb6eb9a060e54bf8d69288fbee4904"] [".config"]
> > 2017-02-10 16:30.15: DBG [irmin.node] succ
> > ["4b825dc642cb6eb9a060e54bf8d69288fbee4904"] [".config"]
> > Fatal error: exception (Invalid_argument ".config/uuid is required in
> > the remote git repository")
> When starting up, Canopy first reads .config/uuid.  But it fails to read
> due to the irmin issue above.
>
> > irmin: [ERROR] server error (Failure "error: read: non-empty query")
> > irmin: [DEBUG] Connection 1: closed!
> Thomas Gazaignare may know more about the current status of git and
> irmin.  Which versions of irmin and git are you using?
>
>
> hannes
>
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--
Carlos Oviedo
PhD student
Network Systems Group
University of Nottingham


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