Re: About locking subvolume in dht translator

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Thank you
When I get the layout from the parent of a file inode (directory) I can see all of the subvolume, so I had thought maybe this work is correct!
So is there any way to do a directory operation from a file? I had test creating parent frame and parent_loc, but there was no correct functionality 

On Fri, Apr 21, 2017 at 11:42 AM, Amar Tumballi <atumball@xxxxxxxxxx> wrote:


On Fri, Apr 21, 2017 at 12:21 PM, Tahereh Fattahi <t28.fattahi@xxxxxxxxx> wrote:
Hi
I want add some code in dht_create before doing create in hashed_subvol.
I want write something in all subvols with setxattr operation.
My problem is that when I want get lock (write lock) on subvols, I get error: 

pending frames:
frame : type(1) op(CREATE)
frame : type(1) op(CREATE)
frame : type(0) op(0)
signal received: 11
time of crash: 
2017-04-21 06:38:23
configuration details:
argp 1
backtrace 1
dlfcn 1
.
.
.
But if I just get lock on one subvol, the step of getting locks do correctly.
I dont know the problem! Are subvols that get from layout from a file parent inode fake?? (from dht_get_layout function)
If I get these locks from a directory for example in a setxattr operation, there is no problem.
The function of lock is dht_blocking_inodelk in dht_commom.c and the operation

STACK_WIND_COOKIE (frame, dht_blocking_inodelk_cbk,
                           (void *) (long) i,
                           local->lock.locks[i]->xl,
                           local->lock.locks[i]->xl->fops->inodelk,
                           local->lock.locks[i]->domain,
                           &local->lock.locks[i]->loc, F_SETLKW, &flock, NULL);

(in dht_blocking_inodelk_rec function )raise error.

Mostly because its a file and inode context is not present on all the subvols?

 

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--
Amar Tumballi (amarts)

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