Alasdair G Kergon wrote:
On Tue, May 25, 2004 at 01:55:23PM +0100, Alasdair G Kergon wrote:
On Mon, May 24, 2004 at 06:00:19PM -0700, Mike Christie wrote:
Is there any way
I could pass in such a thing when my target is created, so that way dm
multipath
would not have any type of command format functions/modules or definitions
(it could just be passed in and built like the sg io code).
We've been talking about a new dm ioctl for passing arbitrary commands
to a target, which I think would cover this.
dm-ioctl.h:
#define DM_TARGET_CTL _IOWR(DM_IOCTL, DM_TARGET_CTL_CMD, struct dm_ioctl)
struct dm_target_ctl {
uint64_t sector; /* Device sector */
/* Might add size of command string if it simplifies processing */
char command[0];
};
Is there any legitimate need to supply a list of dm_target_ctl structs
instead of just one-at-once?
I do not have one.
Is there any need to allow a string of data to be returned in addition
to the error code? [i.e. Are status/table commands sufficient? ]
I also do not have one....
But Christophe V. really does all the userspace stuff, so he would know best.
Alasdair
--
Mike Christie
mikenc@xxxxxxxxxx
