svn+ssh://vlnb@svn.code.sf.net/p/scst/svn/trunk
........
r5955 | bvassche | 2014-12-22 05:10:41 -0800 (Mon, 22 Dec 2014) | 1 line
Update for kernel 3.18
........
r5959 | bvassche | 2015-01-06 05:25:28 -0800 (Tue, 06 Jan 2015) | 1 line
scst_calc_block_shift: Log block shift and sector size upon mismatch
........
r5960 | bvassche | 2015-01-07 01:20:06 -0800 (Wed, 07 Jan 2015) | 4 lines
scst_local: Fix unique per session sas address
Signed-off-by: Sebastian Herbszt <herbszt@gmx.de>
........
r5961 | bvassche | 2015-01-09 04:23:25 -0800 (Fri, 09 Jan 2015) | 4 lines
scst_sysfs: return EINVAL on too big LUN
Signed-off-by: Sebastian Herbszt <herbszt@gmx.de>
........
r5965 | bvassche | 2015-01-13 00:55:46 -0800 (Tue, 13 Jan 2015) | 68 lines
qla2x00t: Copy entire SCST sense buffer to q2x ctio
There seems to be a bug in passing sense information to QLA HBAs, where
the last 2 bytes of the sense data (ASC, ASCQ) are not copied to the low
level sense buffer.
We encountered this in ESX, which relies on these 2 bytes to parse the
MISCOMPARE sense code (0xE1, 0x1D, 0x00).
Bellow is a simple test to recreate this issue, but during vMotion
operations (where VMs are moved from one host to another), this may
cause the operation to fail leaving the VM in an inconsistent state.
The test I ran to verify that we are indeed missing the bytes is the
following:
1. Create a SCST based device
2. Expose the device to 2 ESX hosts
3. Format the device as VMFS5, create a test directory
4. From both hosts, I start writing to this directory (no VMs involved,
just write normal files)
At this stage, both ESX hosts try to take access to the directory.
The VMFS filesystem contains a per-directory lock which is managed by
COMPARE AND WRITE command.
Each ESX will attempt to change the VMFS lock location from unlocked to
locked to create the new file.
Obviously there are bound to be failures (which are equivalent to
programming locking conflicts), these are reported by the MISCOMPARE
sense code.
Upon these MISCOMPARE errors, the host will re-try taking the lock until
it succeeds, and will then proceed to perform the write operation on the
directory.
Due to the bug in copying the sense buffer from the SCST core to the QLA
ctio, instead of the full sense code, only the key (0xE) is sent, and
ESX does not know how to handle it resulting in IO error.
Here are the errors as they appear on the command line:
/vmfs/volumes/54a297c4-ca5af1cc-7f94-002219d20f28/ats_test #
./open_close_test-esx2.sh
./open_close_test-esx2.sh: line 8: can't create
ats_fileoptest-esx2_1.txt: Input/output error
./open_close_test-esx2.sh: line 8: can't create
ats_fileoptest-esx2_21.txt: Input/output error
./open_close_test-esx2.sh: line 8: can't create
ats_fileoptest-esx2_110.txt: Input/output error
./open_close_test-esx2.sh: line 8: can't create
ats_fileoptest-esx2_111.txt: Input/output error
In the /var/log/vmkernel.log, we can see that the sense information is
missing (0xE, 0x0, 0x0) instead of (0xE, 0x1D, 0x0).
2014-12-30T12:13:20.714Z cpu6:33519)ScsiDeviceIO: 2338:
Cmd(0x412e84f957c0) 0x89, CmdSN 0x234d from world 519051 to dev
"eui.0024f400d5020007" failed H:0x0 D:0x2 P:0x0 Valid sense data: 0xe 0x0 0x0.
2014-12-30T12:13:20.766Z cpu6:33519)ScsiDeviceIO: 2338:
Cmd(0x412e84f91d00) 0x89, CmdSN 0x2350 from world 519051 to dev
"eui.0024f400d5020007" failed H:0x0 D:0x2 P:0x0 Valid sense data: 0xe 0x0 0x0.
2014-12-30T12:13:20.766Z cpu6:33519)ScsiDeviceIO: 2338:
Cmd(0x412e80449fc0) 0x89, CmdSN 0x234f from world 519051 to dev
"eui.0024f400d5020007" failed H:0x0 D:0x2 P:0x0 Valid sense data: 0xe 0x0 0x0.
This patch fixes this issue, the test will run without a problem with the
fix (no IO errors, all the files are properly written to the directory).
Signed-off-by: Shahar Salzman <shahar.salzman@kaminario.com>
Reviewed-by: Eran Mann <eran.mann@kaminario.com>
[bvanassche: simplified implementation]
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
........
git-svn-id: http://svn.code.sf.net/p/scst/svn/branches/3.0.x@6110 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This is allowed because all CM callback functions are invoked from thread
context.
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@5443 d57e44dd-8a1f-0410-8b47-8ef2f437770f
Move IB/CM members into a new struct. Report channel pointer instead of CM ID
pointer in diagnostic messages.
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@5442 d57e44dd-8a1f-0410-8b47-8ef2f437770f
ib_send_cm_rep() checks the connection state before sending a response.
Hence checking ch->state before calling ib_send_cm_rep() is superfluous,
so remove that check and also the locking that is no longer needed.
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@5441 d57e44dd-8a1f-0410-8b47-8ef2f437770f
With the SRP protocol all RDMA operations are initiated by the target.
Since no RDMA operations are initiated by the initiator, do not grant
the initiator permission to submit RDMA reads or writes to the target.
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@5423 d57e44dd-8a1f-0410-8b47-8ef2f437770f
