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Spdk/lib/bdev/iscsi
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Chunyang Hui ee909296b4 bdev/iscsi: fix bdevperf iscsi reset 
When testing iscsi reset with bdevperf, all tasks
before will be canceled. And the return status will
be set to CANCELED. We need to trace this status.

For submit_td, sometimes, segfault is thrown because
in bdev_iscsi_io_complete the iscsi_io->submit_td points
to a invalid address. And assigning the submit_td in
bdev_iscsi_submit_request prevent this from happening.
Already tested with bdevperf and bdevio for all io types.

Change-Id: Ib2bf8e2a111c4b3edb5ed88dfd2c91ed6acc5c48
Signed-off-by: Chunyang Hui <Chunyang.hui@intel.com>
Reviewed-on: https://review.gerrithub.io/419932
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ziye Yang <optimistyzy@gmail.com>
Reviewed-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
2018-07-24 01:06:23 +00:00
..
bdev_iscsi_rpc.c rpc/bdev: construct RPC return a string instead array 2018-06-22 21:12:43 +00:00
bdev_iscsi.c bdev/iscsi: fix bdevperf iscsi reset 2018-07-24 01:06:23 +00:00
bdev_iscsi.h bdev: add delete_iscsi_bdev call 2018-06-22 17:24:18 +00:00
Makefile bdev/iscsi: add RPC support and cofnig dump 2018-06-05 17:52:06 +00:00
README bdev: add iSCSI initiator bdev module 2018-03-21 20:35:42 -04:00

README 

This is a very rough initial cut at an SPDK iSCSI initiator bdev module.  It
only performs operations (connect, login, read cap, read/write).
But this passes basic verify tests with bdevperf and with fio.

Configuration file for iSCSI initiator is in the following format.
Note that the "/0" at the end means "LUN 0".

[iSCSI_Initiator]
  URL iscsi://127.0.0.1/iqn.2016-06.io.spdk:disk1/0 iSCSI0

To Do Items
===========
1) Create RPCs.
2) Use asynchronous polling for connect/login/disconnect.  Read/write is already
   using libiscsi event framework.
3) Choose initiator name as part of RPC configuration.  Currently this is hardcoded
   with g_initiator string.
4) Implement reset path.
5) Implement unmap path.
6) Use REPORT_LUNS to dynamically find all of the block devices attached to the
   iSCSI target node instead of hard-coding LUN 0.  This will need some extra
   investigation in libiscsi.  Currently the full URL is used which includes the LUN.
   Not sure yet how we can login to target node and then submit IO to different
   LUNs.  Let's treat this as low priority for now.