Re: Adding one variable to inode structure

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On Mon, Jun 5, 2017 at 9:55 AM, Tahereh Fattahi <t28.fattahi@xxxxxxxxx> wrote:
Assume that one client wants to search it's directories for video files.
 I want use something that helps this client to search just directories that have this kind of file. 
like a extended attribute, but I want this attribute be set by server not by client.
I dont know which xlator is suitable for this work.

The xlator that comes close to it is:  index xlator xlators/features/index/src

You may have to track extra operations like create/mknod/link/rename/unlink to make sure you get the functionality you want. Basically this xlator helps you in indexing a behavior. We use this for indexing directories/files that need heal etc.
 

On Mon, Jun 5, 2017 at 7:13 AM, Pranith Kumar Karampuri <pkarampu@xxxxxxxxxx> wrote:
This sounds hacky. In general anything that is specific about an inode, we try to store it in inode-ctx. Who uses this information about presence of video-file and how? May be with that knowledge there could be a possibility we can improve the solution. Do let us know the complete problem you are trying to solve.

On Mon, Jun 5, 2017 at 4:53 AM, Tahereh Fattahi <t28.fattahi@xxxxxxxxx> wrote:
Hi
I want to add one boolean field to inode structure for a directory.
 when it is 1 it means that directory has one or more video file. when it is 0 it means that there is no video file in that directory.
I can add this variable to inode structure and update it in server side, in posix_create function (when there is a create request for a video file).
question is about client knowledge about this variable. is it possible that client can see the amount of this variable of different servers (bricks) and OR them to one variable in cient's inode of the directory? in which xlator I should try in client side?

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Pranith




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Pranith
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