Block layer patches:

- Fix double processing of nodes in bdrv_set_aio_context()
 - Fix potential hang in block export shutdown
 - block/nvme: Minor tracing improvements
 - iotests: Some more fixups for the 'check' rewrite
 - MAINTAINERS: Add Vladimir as co-maintainer for Block Jobs
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Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches:

- Fix double processing of nodes in bdrv_set_aio_context()
- Fix potential hang in block export shutdown
- block/nvme: Minor tracing improvements
- iotests: Some more fixups for the 'check' rewrite
- MAINTAINERS: Add Vladimir as co-maintainer for Block Jobs

# gpg: Signature made Tue 02 Feb 2021 16:26:02 GMT
# gpg:                using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg:                issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream:
  block: Fix VM size column width in bdrv_snapshot_dump()
  block/nvme: Trace NVMe spec version supported by the controller
  block/nvme: Properly display doorbell stride length in trace event
  iotests: Fix -makecheck output
  iotests: check: return 1 on failure
  iotests: Revert emulator selection to old behaviour
  iotests/297: pylint: ignore too many statements
  block: move blk_exp_close_all() to qemu_cleanup()
  block: Avoid processing BDS twice in bdrv_set_aio_context_ignore()
  MAINTAINERS: Add Vladimir as co-maintainer for Block Jobs

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

MAINTAINERS

@@ -2210,6 +2210,7 @@ F: scsi/*
 
 Block Jobs
 M: John Snow <jsnow@redhat.com>
+M: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
 L: qemu-block@nongnu.org
 S: Supported
 F: blockjob.c
@@ -2222,7 +2223,16 @@ F: block/commit.c
 F: block/stream.c
 F: block/mirror.c
 F: qapi/job.json
+F: block/block-copy.c
+F: include/block/block-copy.c
+F: block/backup-top.h
+F: block/backup-top.c
+F: include/block/aio_task.h
+F: block/aio_task.c
+F: util/qemu-co-shared-resource.c
+F: include/qemu/co-shared-resource.h
 T: git https://gitlab.com/jsnow/qemu.git jobs
+T: git https://src.openvz.org/scm/~vsementsov/qemu.git jobs
 
 Block QAPI, monitor, command line
 M: Markus Armbruster <armbru@redhat.com>

block.c

@@ -4435,7 +4435,6 @@ static void bdrv_close(BlockDriverState *bs)
 void bdrv_close_all(void)
 {
     assert(job_next(NULL) == NULL);
-    blk_exp_close_all();
 
     /* Drop references from requests still in flight, such as canceled block
      * jobs whose AIO context has not been polled yet */
@@ -6439,7 +6438,10 @@ void bdrv_set_aio_context_ignore(BlockDriverState *bs,
                                  AioContext *new_context, GSList **ignore)
 {
     AioContext *old_context = bdrv_get_aio_context(bs);
-    BdrvChild *child;
+    GSList *children_to_process = NULL;
+    GSList *parents_to_process = NULL;
+    GSList *entry;
+    BdrvChild *child, *parent;
 
     g_assert(qemu_get_current_aio_context() == qemu_get_aio_context());
 
@@ -6454,17 +6456,34 @@ void bdrv_set_aio_context_ignore(BlockDriverState *bs,
             continue;
         }
         *ignore = g_slist_prepend(*ignore, child);
-        bdrv_set_aio_context_ignore(child->bs, new_context, ignore);
+        children_to_process = g_slist_prepend(children_to_process, child);
     }
-    QLIST_FOREACH(child, &bs->parents, next_parent) {
+
-        if (g_slist_find(*ignore, child)) {
+    QLIST_FOREACH(parent, &bs->parents, next_parent) {
+        if (g_slist_find(*ignore, parent)) {
             continue;
         }
-        assert(child->klass->set_aio_ctx);
+        *ignore = g_slist_prepend(*ignore, parent);
-        *ignore = g_slist_prepend(*ignore, child);
+        parents_to_process = g_slist_prepend(parents_to_process, parent);
-        child->klass->set_aio_ctx(child, new_context, ignore);
     }
 
+    for (entry = children_to_process;
+         entry != NULL;
+         entry = g_slist_next(entry)) {
+        child = entry->data;
+        bdrv_set_aio_context_ignore(child->bs, new_context, ignore);
+    }
+    g_slist_free(children_to_process);
+
+    for (entry = parents_to_process;
+         entry != NULL;
+         entry = g_slist_next(entry)) {
+        parent = entry->data;
+        assert(parent->klass->set_aio_ctx);
+        parent->klass->set_aio_ctx(parent, new_context, ignore);
+    }
+    g_slist_free(parents_to_process);
+
     bdrv_detach_aio_context(bs);
 
     /* Acquire the new context, if necessary */

block/nvme.c

@@ -708,6 +708,7 @@ static int nvme_init(BlockDriverState *bs, const char *device, int namespace,
     AioContext *aio_context = bdrv_get_aio_context(bs);
     int ret;
     uint64_t cap;
+    uint32_t ver;
     uint64_t timeout_ms;
     uint64_t deadline, now;
     volatile NvmeBar *regs = NULL;
@@ -745,7 +746,7 @@ static int nvme_init(BlockDriverState *bs, const char *device, int namespace,
     trace_nvme_controller_capability("Contiguous Queues Required",
                                      NVME_CAP_CQR(cap));
     trace_nvme_controller_capability("Doorbell Stride",
-                                     2 << (2 + NVME_CAP_DSTRD(cap)));
+                                     1 << (2 + NVME_CAP_DSTRD(cap)));
     trace_nvme_controller_capability("Subsystem Reset Supported",
                                      NVME_CAP_NSSRS(cap));
     trace_nvme_controller_capability("Memory Page Size Minimum",
@@ -764,6 +765,11 @@ static int nvme_init(BlockDriverState *bs, const char *device, int namespace,
     bs->bl.request_alignment = s->page_size;
     timeout_ms = MIN(500 * NVME_CAP_TO(cap), 30000);
 
+    ver = le32_to_cpu(regs->vs);
+    trace_nvme_controller_spec_version(extract32(ver, 16, 16),
+                                       extract32(ver, 8, 8),
+                                       extract32(ver, 0, 8));
+
     /* Reset device to get a clean state. */
     regs->cc = cpu_to_le32(le32_to_cpu(regs->cc) & 0xFE);
     /* Wait for CSTS.RDY = 0. */

block/qapi.c

@@ -677,7 +677,7 @@ void bdrv_snapshot_dump(QEMUSnapshotInfo *sn)
     char *sizing = NULL;
 
     if (!sn) {
-        qemu_printf("%-10s%-18s%7s%20s%13s%11s",
+        qemu_printf("%-10s%-17s%8s%20s%13s%11s",
                     "ID", "TAG", "VM SIZE", "DATE", "VM CLOCK", "ICOUNT");
     } else {
         ti = sn->date_sec;
@@ -696,7 +696,7 @@ void bdrv_snapshot_dump(QEMUSnapshotInfo *sn)
             snprintf(icount_buf, sizeof(icount_buf),
                 "%"PRId64, sn->icount);
         }
-        qemu_printf("%-9s %-17s %7s%20s%13s%11s",
+        qemu_printf("%-9s %-16s %8s%20s%13s%11s",
                     sn->id_str, sn->name,
                     sizing,
                     date_buf,

block/trace-events

@@ -136,6 +136,7 @@ qed_aio_write_main(void *s, void *acb, int ret, uint64_t offset, size_t len) "s
 # nvme.c
 nvme_controller_capability_raw(uint64_t value) "0x%08"PRIx64
 nvme_controller_capability(const char *desc, uint64_t value) "%s: %"PRIu64
+nvme_controller_spec_version(uint32_t mjr, uint32_t mnr, uint32_t ter) "Specification supported: %u.%u.%u"
 nvme_kick(void *s, unsigned q_index) "s %p q #%u"
 nvme_dma_flush_queue_wait(void *s) "s %p"
 nvme_error(int cmd_specific, int sq_head, int sqid, int cid, int status) "cmd_specific %d sq_head %d sqid %d cid %d status 0x%x"

qemu-nbd.c

@@ -503,6 +503,7 @@ static const char *socket_activation_validate_opts(const char *device,
 static void qemu_nbd_shutdown(void)
 {
     job_cancel_sync_all();
+    blk_exp_close_all();
     bdrv_close_all();
 }
 

softmmu/runstate.c

@@ -25,6 +25,7 @@
 #include "qemu/osdep.h"
 #include "audio/audio.h"
 #include "block/block.h"
+#include "block/export.h"
 #include "chardev/char.h"
 #include "crypto/cipher.h"
 #include "crypto/init.h"
@@ -784,6 +785,14 @@ void qemu_cleanup(void)
      */
     migration_shutdown();
 
+    /*
+     * Close the exports before draining the block layer. The export
+     * drivers may have coroutines yielding on it, so we need to clean
+     * them up before the drain, as otherwise they may be get stuck in
+     * blk_wait_while_drained().
+     */
+    blk_exp_close_all();
+
     /*
      * We must cancel all block jobs while the block layer is drained,
      * or cancelling will be affected by throttling and thus may block

storage-daemon/qemu-storage-daemon.c

@@ -314,6 +314,7 @@ int main(int argc, char *argv[])
         main_loop_wait(false);
     }
 
+    blk_exp_close_all();
     bdrv_drain_all_begin();
     bdrv_close_all();
 

tests/qemu-iotests/check

@@ -140,4 +140,7 @@ if __name__ == '__main__':
     else:
         with TestRunner(env, makecheck=args.makecheck,
                         color=args.color) as tr:
-            tr.run_tests([os.path.join(env.source_iotests, t) for t in tests])
+            paths = [os.path.join(env.source_iotests, t) for t in tests]
+            ok = tr.run_tests(paths)
+            if not ok:
+                sys.exit(1)

tests/qemu-iotests/pylintrc

@@ -21,6 +21,8 @@ disable=invalid-name,
         unsubscriptable-object,
         # These are temporary, and should be removed:
         missing-docstring,
+        too-many-return-statements,
+        too-many-statements
 
 [FORMAT]
 

tests/qemu-iotests/testenv.py

@@ -135,7 +135,7 @@ class TestEnv(ContextManager['TestEnv']):
         if not os.path.exists(self.qemu_prog):
             pattern = root('qemu-system-*')
             try:
-                progs = glob.iglob(pattern)
+                progs = sorted(glob.iglob(pattern))
                 self.qemu_prog = next(p for p in progs if isxfile(p))
             except StopIteration:
                 sys.exit("Not found any Qemu executable binary by pattern "

tests/qemu-iotests/testrunner.py

@@ -301,8 +301,10 @@ class TestRunner(ContextManager['TestRunner']):
         last_el = self.last_elapsed.get(test)
         start = datetime.datetime.now().strftime('%H:%M:%S')
 
-        self.test_print_one_line(test=test, starttime=start, lasttime=last_el,
+        if not self.makecheck:
-                                 end='\r', test_field_width=test_field_width)
+            self.test_print_one_line(test=test, starttime=start,
+                                     lasttime=last_el, end='\r',
+                                     test_field_width=test_field_width)
 
         res = self.do_run_test(test)
 
@@ -318,7 +320,7 @@ class TestRunner(ContextManager['TestRunner']):
 
         return res
 
-    def run_tests(self, tests: List[str]) -> None:
+    def run_tests(self, tests: List[str]) -> bool:
         n_run = 0
         failed = []
         notrun = []
@@ -363,5 +365,7 @@ class TestRunner(ContextManager['TestRunner']):
         if failed:
             print('Failures:', ' '.join(failed))
             print(f'Failed {len(failed)} of {n_run} iotests')
+            return False
         else:
             print(f'Passed all {n_run} iotests')
+            return True