[sheepdog] [PATCH RFC 1/2] sheepdev: linux kernel module of block device driver for sheepdog

[levin li]

On 12/27/2012 11:57 PM, Hitoshi Mitake wrote:
> At Thu, 27 Dec 2012 22:00:41 +0800,
> levin li wrote:
>>
>> From: levin li <xingke.lwp at taobao.com>
>>
>> This module provides function for users to take sheepdog VDIs as block
>> devices in linux, users can register a VDI to its kernel space, it just
>> like that a new hard disk is added to the computer, users can create
>> partitions for the disk, format the disk or mount the disk, it provides
>> users a efficient way to use sheepdog as distributed storage system.
>>
>> The usage is easy, after install the module sheepdev.ko, it creates a proc
>> entry '/proc/entry', you can write into the proc entry file to control
>> the driver.
>>
>> Add a new block device from an existing sheepdog VDI:
>>
>> # echo "add 127.0.0.1:7070 a5d05d" > /proc/sheep
>>
>> It would create a block device /dev/sheepa, you can format/mount this device:
>>
>> # mkfs.ext4 /dev/sheepa
>> # mount -t ext4 /sheep/sheepa test
>>
>> Remove a block device from the kernel:
>>
>> # echo "del sheepa" > /proc/sheep
>>
>> Signed-off-by: levin li <xingke.lwp at taobao.com>
>> ---
>>   sheepdev/connect.c        | 178 ++++++++++++
>>   sheepdev/module.c         | 726 ++++++++++++++++++++++++++++++++++++++++++++++
>>   sheepdev/sheep.c          | 136 +++++++++
>>   sheepdev/sheep.h          |  88 ++++++
>>   sheepdev/sheepdog_proto.h | 290 ++++++++++++++++++
>>   5 files changed, 1418 insertions(+)
>>   create mode 100644 sheepdev/connect.c
>>   create mode 100644 sheepdev/module.c
>>   create mode 100644 sheepdev/sheep.c
>>   create mode 100644 sheepdev/sheep.h
>>   create mode 100644 sheepdev/sheepdog_proto.h
>>
> 
> It is interesting. I've not looked the internal of sheepdev, but I
> tried to build it and found this compile error:
> /home/mitake/github/sheepdog.git/sheepdev/connect.c: In function ‘connect_to’:
> /home/mitake/github/sheepdog.git/sheepdev/connect.c:31: error: implicit declaration of function ‘in_aton’
> 
> It seems that including <linux/inet.h> in sheep.h is required.
> The version of my environment for building the kernel module is
> 3.7.0-rc7.
> 
> Thanks,
> Hitoshi
> 


Thanks, I'll try the kernel you use and fix this problem.

thanks,

levin