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 vblade ask pid 2919
2. Shelf number ask shelf 9
3. Slot number ask slot 0
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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but recycled into shopping bags so he can remain white,
plastic and dangerous for kids to play with.
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