[zfs-discuss] zfs ioctls and cli concepts

[shelly]

i would like to know how to include a ioctl in zfs_ioctl.c. 

So would be grateful if somebody explained how zfs ioctls work.
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Re: [zfs-discuss] zfs znode changes getting lost

[shelly]

thanx a lot perrin it really helped a lot.
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[zfs-discuss] zfs znode changes getting lost

[shelly]

In place of padding in zfs znode i added a new field. stored an integer value 
and am able to see saved information. 

but after reboot it is not there.  If i was able to access before reboot so it 
must be in memory. I think i need to  save it to disk.
how does one force zfs znode to disk.
right now i dont do anything special for it. Just made an ioctl, accessed znode 
and made changes.

example in zfs_ioctl

case add_new:
zp = VTOZ(vp);
zp-z_phys-new_field = 2;
   return(0);
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[zfs-discuss] unloading zfs module

[shelly]

Is it possible to unload zfs module without rebooting the computer. 

I am making some changes in zfs kernel code. then compiling it. i then want to 
reload the newly rebuilt module without rebooting.

I tried modunload. But its always givin can't unload the module: Device busy .

What can be the possible solution
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