Asynchronous read

[tejuka...@gmail.com]

Hey..

Does libiscsi have any function for asynchronous read ? 

Thanks!

[ronnie sahlberg]

Hi Tejasvini,

Yes, libiscsi is primarily a non-blocking async library and all
commands exist in async versions.
(There is also a synchronous version of the API but that is maerely
for ease of use in trivial applications. Real stuff use the async
interface)

For example:

EXTERN struct scsi_task *
iscsi_read16_task(struct iscsi_context *iscsi, int lun, uint64_t lba,
uint32_t datalen, int blocksize,
int rdprotect, int dpo, int fua, int fua_nv, int
group_number,
iscsi_command_cb cb, void *private_data);

Check iscsi.h All the functions ending in _task() are async.

You then use the functions iscsi_get_fd(), iscsi_which_events() and
iscsi_service() to plug libiscsi into your event loop.



regards
ronnie sahlberg

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