From Adam Endrodi <adam.endrodi@nsn.com>
Fix a bug and clear is_corked during socket disconnect so that we
can re-use the context for a new connection.
Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
set_tcp_sockopt in particular conflicts with libnfs's function of the same
name and prevents a a program from statically linking against both libnfs and
libiscsi.
Similar fix should also go into libnfs.
- Fix UNMAP tests
- Build updates
- Check residuals also when status != GOOD
- Add WSNZ bit to the tests
- Various test updates
- Fix bug in scsi_create_task so it sets cdb_len correctly
- Add a getter function for scsi task status and sense
- Fixes and workarounds for Dell Equallogic issues
- Be more flexible when allowing for unit attentions during connect time
Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
We forgot to set task->cdb_size which means all tasks we create with this
function becomes test unit ready :-(
Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Dell Equallogic storages may redirect connections from one member of a multi member storage
group to another. When the member that has the volume lead changes the storage issues
an async disconnect request message. The correct behaviour would be to either fail all I/O requests
with a check condition (waiting for logout) or fullfil requests until the time specified
in the disconnect request message has elapsed and then drop the connection. In firwamre 7.x
however the storage sometimes cancels requests with SENSE KEY:ILLEGAL_REQUEST(5)
ASCQ:LOGICAL_UNIT_NOT_SUPPORTED(0x2500). This leads to I/O errors propagated to the application.
This patch was reported in May 2014 to Dell and the initial bug 71409 has been fixed in 7.0.7.
However, the first fix did not entirely solve the problem and bug 73732 has been raised.
This patch adds an environment variable LIBISCSI_DROP_CONN_ON_ASYNC_EVENT1 which if set leads
to an immediate drop of the connection when such an async event is received. This is ugly, but
works around the I/O errors.
Signed-off-by: Peter Lieven <pl@kamp.de>
Add 0x2701/0x2702 to the list of valid ASCQ values we accept for devices
that are write protected.
Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Lets not use a whitelist of UnitAttentions that we consume during the connect
phase. Instead we can just loop and fail after the 10th.
If there are more than 10 UAs then we have a problem, otherwise
just consume them all, forget them and then pass control back to the caller.
Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
This issue was introduced via patch "pdu: introduce ISCSI_PDU_CORK_WHEN_SENT"
on June 13, 2014 (commit 99585b6996).
Valgrind reported this use-after-free as follows:
Invalid read of size 4
at 0x5267606: iscsi_write_to_socket (socket.c:721)
by 0x5267A72: iscsi_service (socket.c:823)
by 0x526827C: event_loop (sync.c:67)
by 0x52698A4: iscsi_compareandwrite_sync (sync.c:823)
by 0x408111: compareandwrite (iscsi-support.c:1752)
by 0x4139E2: test_compareandwrite_simple (test_compareandwrite_simple.c:88)
by 0x503D260: ??? (in /usr/lib64/libcunit.so.1.0.1)
by 0x503D578: ??? (in /usr/lib64/libcunit.so.1.0.1)
by 0x503D8B5: CU_run_all_tests (in /usr/lib64/libcunit.so.1.0.1)
by 0x4046C6: main (iscsi-test-cu.c:1241)
Address 0x639f258 is 8 bytes inside a block of size 256 free'd
at 0x4C291E7: free (vg_replace_malloc.c:473)
by 0x525321B: iscsi_free (init.c:68)
by 0x52532F0: iscsi_sfree (init.c:110)
by 0x5257AD9: iscsi_free_pdu (pdu.c:179)
by 0x5267601: iscsi_write_to_socket (socket.c:719)
by 0x5267A72: iscsi_service (socket.c:823)
by 0x526827C: event_loop (sync.c:67)
by 0x52698A4: iscsi_compareandwrite_sync (sync.c:823)
by 0x408111: compareandwrite (iscsi-support.c:1752)
by 0x4139E2: test_compareandwrite_simple (test_compareandwrite_simple.c:88)
by 0x503D260: ??? (in /usr/lib64/libcunit.so.1.0.1)
by 0x503D578: ??? (in /usr/lib64/libcunit.so.1.0.1)
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Cc: Peter Lieven <pl@kamp.de>
From the SPC-4 paragraph about WRITE SAME(10): "The WRITE SAME (10)
command requests that the device server transfer a single logical
block from the Data-Out Buffer [ ... ]". Hence always pass a data
buffer when sending a WRITE SAME(10) command.
Set the NDOB bit in the WRITE SAME(16) command if no data out buffer
is present.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Since writing headers and payload in a single iov has never been
implementend and after thinking about it several times seems to
be very hairy I would like to revert this change since
the original implementation is in O(1) while the changed one
is in O(n). This results in a complexity of O(n^2) instead of
O(n) for the whole send operation.
This reverts commit 06eab264f6.
if the socket is corked we otherwise set POLLOUT and then
do not sent. Depending on the event loop implementation this
can result in a busy wait.
Signed-off-by: Peter Lieven <pl@kamp.de>
The outqueue_current PDU might also be in waitpdu if it does not have
ISCSI_PDU_DELETE_WHEN_SENT. outqueue_current is freed after the
waitpdu list (for reconnect or defer_reconnect), or sometimes not
considered at all (for cancel), and this can cause a dangling pointer.
Keep outqueue_current up to date when a PDU is freed. A bit hacky,
but it avoids touching code all over the place.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
if the rejected packet is a NOP-Out it is legal
that it has no callback. In this case we end
up in a segfault.
Signed-off-by: Peter Lieven <pl@kamp.de>
after a target has send the async target requests logout event it may
reject each request with a waiting for logout reason. Catch these
rejects if an outstanding request and the logout event overlap.
Signed-off-by: Peter Lieven <pl@kamp.de>
1.10 and 1.11 both introduced incompatible changes to the
libiscsi ABI. Please do not do that, and feel free to Cc
me on any patch that touches include/. In the meanwhile,
bump the soname of the library. I suggest releasing 1.11.1
with this change for distros.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Cast ptrdiff (diff between two pointers) to long to fix printfs.
This fixes FTBFS on 32bit architectures.
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Rename the macros for managing the linked lists from SLIST_* to ISCSI_LIST_*
to avoid a clash on *BSD which already have other macros SLIST_*
Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
This version contains changes for:
- Fix memory leaks in persistent reserve out.
- Fix various leaks in the testsuite.
- Add additional READ16 tests
- Better logging when reconnect fails.
- Discovery and Login fixes.
- Various fixes found by coverity.
- WRITESAME test updates.
- Add XML oputput support for the testsuite.
and various other things.
Signed-off-by: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Some targets return multiple TargetAddress for individual targets.
Create a linked list of addresses for each target instead of
failing the discovery process when this happens.
Empty discovery and login packets are legal, and have the same behavior
as packets with a single NUL in them. Introduced by commit 94d73fc
(Merge pull request #83 from bonzini/coverity, 2013-11-05).
Reported-by: John Ferlan <jferlan@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Otherwise we access a NULL pointer. RFC3270 appendix D confirms
that TargetName must always come before TargetAddress.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
