Re: [Aoetools-discuss] Exposing shares

2014-05-13 Thread Turbo Fredriksson
On May 13, 2014, at 3:31 AM, Ed Cashin wrote:

 OK, I've got this:
 
  https://github.com/ecashin/vblade/

Perfect, thanx!

Is this 'latest-and-greatest' (development) at the
moment, or did you create from the current released
version (21 I think)?

 ... which should help us test and think about changes.  If you send a pull 
 request, it would also be helpful, I think, to send a patch to this list.  
 There's no community for the vblade on github now, and that's fine.


I will get right on it.
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Re: [Aoetools-discuss] Exposing shares

2014-05-13 Thread Ed Cashin
I think they're the same, but if not, I can merge any outstanding changes that 
might be hiding out later.

It remains to be seen whether this tree sticks, but it's certainly convenient 
right now.  We could even have some prerelease tarballs on github, I think.

On May 13, 2014, at 2:08 PM, Turbo Fredriksson tu...@bayour.com wrote:

 On May 13, 2014, at 3:31 AM, Ed Cashin wrote:
 
 OK, I've got this:
 
 https://github.com/ecashin/vblade/
 
 Perfect, thanx!
 
 Is this 'latest-and-greatest' (development) at the
 moment, or did you create from the current released
 version (21 I think)?
 
 ... which should help us test and think about changes.  If you send a pull 
 request, it would also be helpful, I think, to send a patch to this list.  
 There's no community for the vblade on github now, and that's fine.
 
 
 I will get right on it.
 -- 
 Turbo Fredriksson
 tu...@bayour.com
 
 
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Re: [Aoetools-discuss] Exposing shares

2014-05-12 Thread Turbo Fredriksson
On May 11, 2014, at 6:18 PM, Turbo Fredriksson wrote:

 So I'm wondering about some 'status API' or somewhat to retrieve
 information about shares and their status. Both the three iSCSI
 implementations I added support for in ZoL as well as samba have
 a well defined 'status' information.


Since I haven't heard anything yet, I thought I put a couple of
minutes thinking about this. This is what I came up with, without
spending to much time on it, so it needs work:


NEEDED INFO IFACE CMD   
EXAMPLE RETURN

1. PID of vbladeask pid 
2919
2. Shelf number ask shelf   
9
3. Slot number  ask slot0
4. Full device path ask device name 
/dev/zvol/rpool/test2
5. Size of device   ask device size 
20971520
6. Share options (O_DIRECT, O_SYNC, r/o, r/w)   ask option [direct;sync;ro,rw]  
7. Ethernet interface for share ask netif   
eth0
8. Share state (up, ... ?)  ask state   
up
9. MAC Access list  ask cal 


The simplest would be to have each individual vblade process
create a socket to comunicate to.
Example: /var/run/vblade/netif_shelf_slot.ctrl

Then 'echo' the command above, and it will respond appropriately.


The more complicated (but not by much) is to create a 'mother process'
that will spawon separate processes with ONE socket
Example: /var/run/vblade/control

   Additional cmds:
 create process shelf slot options device
 ask processes
   returns:
   pid shelf slot options device
   []
 ask pid [cmd from top]

   This would then be 'vbladed' (binary, instead of the
   shell script that it is today which simply waits for
   commands and responds appropriately) and a 'vblade_cmd'
   binary/script that 'simply' talks to the socket and
   make 'vbladed' start (fork) the child process etc.
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Re: [Aoetools-discuss] Exposing shares

2014-05-12 Thread Ed Cashin
OK, I've got this:

  https://github.com/ecashin/vblade/

... which should help us test and think about changes.  If you send a pull 
request, it would also be helpful, I think, to send a patch to this list.  
There's no community for the vblade on github now, and that's fine.

On May 12, 2014, at 8:52 PM, Turbo Fredriksson tu...@bayour.com wrote:

 On May 13, 2014, at 2:38 AM, Ed Cashin wrote:
 
 Would it help you to do something like this if vblade was on github?  You 
 could implement your full-featured vbladed replacement in a fork and see how 
 it goes.
 
 
 Any version management system would do of course, but
 I have started to prefer GitHub.
 
 Since I couldn't find any 'official' one, I created
 my own repository (and I've seen that other people
 have done the same) based on the tar balls.
 
 
 I have not actually written any code yet because I
 wanted input on the best way to do this. If you're
 satisfied with my initial proposal, I can write
 something from that, and either send a patch to the
 list, or if you choose GitHub, create a pull request.
 --
 There are no dumb questions,
 unless a customer is asking them.
 - Unknown
 
 
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[Aoetools-discuss] Exposing shares

2014-05-11 Thread Turbo Fredriksson
I'm in the process of adding AoE support to ZoL
(ZFS On Linux - https://github.com/zfsonlinux/zfs)
and have gotten most of the way there 
(https://github.com/FransUrbo/zfs/tree/aoe).

I'm the author of the iSCSI (not yet accepted) and SMB
(partly accepted) support in ZoL, so adding AoE seemed
like a good and easy addition.


I have however caught on a couple of snags that complicates
the issue.

1. How do I find the device that is shared?
'aoe-stat' doesn't say, and there's noting in the
/sys fs that I can see.

I can see the process in the list
debian:~# /bin/ps faxwww | grep 'vblade 9 0 eth0' | grep -v grep
12175 pts/1S  0:00 sh -c /usr/sbin/vblade 9 0 eth0 
/dev/zvol/rpool/test  /dev/null 21 | logger -t vbladed
12177 pts/1S  0:00  \_ /usr/sbin/vblade 9 0 eth0 
/dev/zvol/rpool/test
but that doesn't seems like a secure way of
knowing.

2. How do I terminate (unshare) a device?
It's in the process list above, but that also seems
a little ... 'wonkey'.
It would have been nice if vblade/vbladed wrote
a pid file or something.

Also, before killing the process, it would be nice
to know if 'anyone' where accessing it.

3. Actually, getting ANY information on the server doesn't
   seem to be possible. All the aoe-* commands returns null
   and vblade/vbladed doesn't have a 'show' or 'stats' option...

So I'm wondering about some 'status API' or somewhat to retrieve
information about shares and their status. Both the three iSCSI
implementations I added support for in ZoL as well as samba have
a well defined 'status' information.

AoE/vblade have _nothing_ of this kind as far as I can see.
-- 
Turbo Fredriksson
tu...@bayour.com


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