[PATCH v9 0/9] Apply COR-filter to the block-stream permanently

[PATCH v9 0/9] Apply COR-filter to the block-stream permanently

[Andrey Shinkevich via]

Despite the patch "freeze link to base node..." has been removed from the
series in the current version 9, the iotest case test_stream_parallel does
not pass after the COR-filter is inserted into the backing chain. As the
test case may not be initialized, it does not make a sense and was removed
again.
The check with bdrv_is_allocated_above() takes place in the COR-filter and
in the block-stream job both. An optimization of the block-stream job based
on the filter functionality may be made in a separate series.

v9:
  02: Refactored.
  04: Base node name is used instead of the file name.
  05: New implementation based on Max' review.
  06: New.
  07: New. The patch "freeze link to base node..." was deleted.
  08: New.
  09: The filter node options are initialized.

The v8 Message-Id:
<1598633579-221780-1-git-send-email-andrey.shinkevich@virtuozzo.com>

Andrey Shinkevich (9):
  copy-on-read: Support preadv/pwritev_part functions
  copy-on-read: add filter append/drop functions
  qapi: add filter-node-name to block-stream
  copy-on-read: pass base node name to COR driver
  copy-on-read: limit guest COR activity to base in COR driver
  copy-on-read: skip non-guest reads if no copy needed
  stream: skip filters when writing backing file name to QCOW2 header
  block: remove unused parameter backing-file name
  block: apply COR-filter to block-stream jobs

 block/copy-on-read.c           | 165 ++++++++++++++++++++++++++++++++++++++---
 block/io.c                     |   2 +-
 block/monitor/block-hmp-cmds.c |   6 +-
 block/stream.c                 | 112 +++++++++++++++++-----------
 blockdev.c                     |  21 +-----
 include/block/block_int.h      |   9 ++-
 qapi/block-core.json           |  23 ++----
 tests/qemu-iotests/030         |  51 ++-----------
 tests/qemu-iotests/030.out     |   4 +-
 tests/qemu-iotests/141.out     |   2 +-
 tests/qemu-iotests/245         |  19 +++--
 11 files changed, 267 insertions(+), 147 deletions(-)

-- 
1.8.3.1

[PATCH v9 1/9] copy-on-read: Support preadv/pwritev_part functions

[Andrey Shinkevich via]

Add support for the recently introduced functions
bdrv_co_preadv_part()
and
bdrv_co_pwritev_part()
to the COR-filter driver.

Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 block/copy-on-read.c | 28 ++++++++++++++++------------
 1 file changed, 16 insertions(+), 12 deletions(-)

diff --git a/block/copy-on-read.c b/block/copy-on-read.c
index 2816e61..cb03e0f 100644
--- a/block/copy-on-read.c
+++ b/block/copy-on-read.c
@@ -74,21 +74,25 @@ static int64_t cor_getlength(BlockDriverState *bs)
 }
 
 
-static int coroutine_fn cor_co_preadv(BlockDriverState *bs,
-                                      uint64_t offset, uint64_t bytes,
-                                      QEMUIOVector *qiov, int flags)
+static int coroutine_fn cor_co_preadv_part(BlockDriverState *bs,
+                                           uint64_t offset, uint64_t bytes,
+                                           QEMUIOVector *qiov,
+                                           size_t qiov_offset,
+                                           int flags)
 {
-    return bdrv_co_preadv(bs->file, offset, bytes, qiov,
-                          flags | BDRV_REQ_COPY_ON_READ);
+    return bdrv_co_preadv_part(bs->file, offset, bytes, qiov, qiov_offset,
+                               flags | BDRV_REQ_COPY_ON_READ);
 }
 
 
-static int coroutine_fn cor_co_pwritev(BlockDriverState *bs,
-                                       uint64_t offset, uint64_t bytes,
-                                       QEMUIOVector *qiov, int flags)
+static int coroutine_fn cor_co_pwritev_part(BlockDriverState *bs,
+                                            uint64_t offset,
+                                            uint64_t bytes,
+                                            QEMUIOVector *qiov,
+                                            size_t qiov_offset, int flags)
 {
-
-    return bdrv_co_pwritev(bs->file, offset, bytes, qiov, flags);
+    return bdrv_co_pwritev_part(bs->file, offset, bytes, qiov, qiov_offset,
+                                flags);
 }
 
 
@@ -137,8 +141,8 @@ static BlockDriver bdrv_copy_on_read = {
 
     .bdrv_getlength                     = cor_getlength,
 
-    .bdrv_co_preadv                     = cor_co_preadv,
-    .bdrv_co_pwritev                    = cor_co_pwritev,
+    .bdrv_co_preadv_part                = cor_co_preadv_part,
+    .bdrv_co_pwritev_part               = cor_co_pwritev_part,
     .bdrv_co_pwrite_zeroes              = cor_co_pwrite_zeroes,
     .bdrv_co_pdiscard                   = cor_co_pdiscard,
     .bdrv_co_pwritev_compressed         = cor_co_pwritev_compressed,
-- 
1.8.3.1

[PATCH v9 2/9] copy-on-read: add filter append/drop functions

[Andrey Shinkevich via]

Provide API for the COR-filter insertion/removal.
Also, drop the filter child permissions for an inactive state when the
filter node is being removed.

Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
---
 block/copy-on-read.c | 84 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 84 insertions(+)

diff --git a/block/copy-on-read.c b/block/copy-on-read.c
index cb03e0f..3c8231f 100644
--- a/block/copy-on-read.c
+++ b/block/copy-on-read.c
@@ -23,11 +23,21 @@
 #include "qemu/osdep.h"
 #include "block/block_int.h"
 #include "qemu/module.h"
+#include "qapi/error.h"
+#include "qapi/qmp/qdict.h"
+#include "block/copy-on-read.h"
+
+
+typedef struct BDRVStateCOR {
+    bool active;
+} BDRVStateCOR;
 
 
 static int cor_open(BlockDriverState *bs, QDict *options, int flags,
                     Error **errp)
 {
+    BDRVStateCOR *state = bs->opaque;
+
     bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds,
                                BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY,
                                false, errp);
@@ -42,6 +52,13 @@ static int cor_open(BlockDriverState *bs, QDict *options, int flags,
         ((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK) &
             bs->file->bs->supported_zero_flags);
 
+    state->active = true;
+
+    /*
+     * We don't need to call bdrv_child_refresh_perms() now as the permissions
+     * will be updated later when the filter node gets its parent.
+     */
+
     return 0;
 }
 
@@ -57,6 +74,17 @@ static void cor_child_perm(BlockDriverState *bs, BdrvChild *c,
                            uint64_t perm, uint64_t shared,
                            uint64_t *nperm, uint64_t *nshared)
 {
+    BDRVStateCOR *s = bs->opaque;
+
+    if (!s->active) {
+        /*
+         * While the filter is being removed
+         */
+        *nperm = 0;
+        *nshared = BLK_PERM_ALL;
+        return;
+    }
+
     *nperm = perm & PERM_PASSTHROUGH;
     *nshared = (shared & PERM_PASSTHROUGH) | PERM_UNCHANGED;
 
@@ -135,6 +163,7 @@ static void cor_lock_medium(BlockDriverState *bs, bool locked)
 
 static BlockDriver bdrv_copy_on_read = {
     .format_name                        = "copy-on-read",
+    .instance_size                      = sizeof(BDRVStateCOR),
 
     .bdrv_open                          = cor_open,
     .bdrv_child_perm                    = cor_child_perm,
@@ -159,4 +188,59 @@ static void bdrv_copy_on_read_init(void)
     bdrv_register(&bdrv_copy_on_read);
 }
 
+
+BlockDriverState *bdrv_cor_filter_append(BlockDriverState *bs,
+                                         QDict *node_options,
+                                         int flags, Error **errp)
+{
+    BlockDriverState *cor_filter_bs;
+    Error *local_err = NULL;
+
+    cor_filter_bs = bdrv_open(NULL, NULL, node_options, flags, errp);
+    if (cor_filter_bs == NULL) {
+        error_prepend(errp, "Could not create COR-filter node: ");
+        return NULL;
+    }
+
+    bdrv_drained_begin(bs);
+    bdrv_replace_node(bs, cor_filter_bs, &local_err);
+    bdrv_drained_end(bs);
+
+    if (local_err) {
+        bdrv_unref(cor_filter_bs);
+        error_propagate(errp, local_err);
+        return NULL;
+    }
+
+    return cor_filter_bs;
+}
+
+
+void bdrv_cor_filter_drop(BlockDriverState *cor_filter_bs)
+{
+    BdrvChild *child;
+    BlockDriverState *bs;
+    BDRVStateCOR *s = cor_filter_bs->opaque;
+
+    child = bdrv_filter_child(cor_filter_bs);
+    if (!child) {
+        return;
+    }
+    bs = child->bs;
+
+    /* Retain the BDS until we complete the graph change. */
+    bdrv_ref(bs);
+    /* Hold a guest back from writing while permissions are being reset. */
+    bdrv_drained_begin(bs);
+    /* Drop permissions before the graph change. */
+    s->active = false;
+    bdrv_child_refresh_perms(cor_filter_bs, child, &error_abort);
+    bdrv_replace_node(cor_filter_bs, bs, &error_abort);
+
+    bdrv_drained_end(bs);
+    bdrv_unref(bs);
+    bdrv_unref(cor_filter_bs);
+}
+
+
 block_init(bdrv_copy_on_read_init);
-- 
1.8.3.1

[PATCH v9 3/9] qapi: add filter-node-name to block-stream

[Andrey Shinkevich via]

Provide the possibility to pass the 'filter-node-name' parameter to the
block-stream job as it is done for the commit block job.

Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 block/monitor/block-hmp-cmds.c | 4 ++--
 block/stream.c                 | 4 +++-
 blockdev.c                     | 4 +++-
 include/block/block_int.h      | 7 ++++++-
 qapi/block-core.json           | 6 ++++++
 5 files changed, 20 insertions(+), 5 deletions(-)

diff --git a/block/monitor/block-hmp-cmds.c b/block/monitor/block-hmp-cmds.c
index 4d3db5e..4e66775 100644
--- a/block/monitor/block-hmp-cmds.c
+++ b/block/monitor/block-hmp-cmds.c
@@ -507,8 +507,8 @@ void hmp_block_stream(Monitor *mon, const QDict *qdict)
 
     qmp_block_stream(true, device, device, base != NULL, base, false, NULL,
                      false, NULL, qdict_haskey(qdict, "speed"), speed, true,
-                     BLOCKDEV_ON_ERROR_REPORT, false, false, false, false,
-                     &error);
+                     BLOCKDEV_ON_ERROR_REPORT, false, NULL, false, false, false,
+                     false, &error);
 
     hmp_handle_error(mon, error);
 }
diff --git a/block/stream.c b/block/stream.c
index 8ce6729..e0540ee 100644
--- a/block/stream.c
+++ b/block/stream.c
@@ -221,7 +221,9 @@ static const BlockJobDriver stream_job_driver = {
 void stream_start(const char *job_id, BlockDriverState *bs,
                   BlockDriverState *base, const char *backing_file_str,
                   int creation_flags, int64_t speed,
-                  BlockdevOnError on_error, Error **errp)
+                  BlockdevOnError on_error,
+                  const char *filter_node_name,
+                  Error **errp)
 {
     StreamBlockJob *s;
     BlockDriverState *iter;
diff --git a/blockdev.c b/blockdev.c
index bebd3ba..d719c47 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -2489,6 +2489,7 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
                       bool has_backing_file, const char *backing_file,
                       bool has_speed, int64_t speed,
                       bool has_on_error, BlockdevOnError on_error,
+                      bool has_filter_node_name, const char *filter_node_name,
                       bool has_auto_finalize, bool auto_finalize,
                       bool has_auto_dismiss, bool auto_dismiss,
                       Error **errp)
@@ -2571,7 +2572,8 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
     }
 
     stream_start(has_job_id ? job_id : NULL, bs, base_bs, base_name,
-                 job_flags, has_speed ? speed : 0, on_error, &local_err);
+                 job_flags, has_speed ? speed : 0, on_error,
+                 filter_node_name, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         goto out;
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 38cad9d..f782737 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -1134,6 +1134,9 @@ int is_windows_drive(const char *filename);
  *                  See @BlockJobCreateFlags
  * @speed: The maximum speed, in bytes per second, or 0 for unlimited.
  * @on_error: The action to take upon error.
+ * @filter_node_name: The node name that should be assigned to the filter
+ * driver that the commit job inserts into the graph above @bs. NULL means
+ * that a node name should be autogenerated.
  * @errp: Error object.
  *
  * Start a streaming operation on @bs.  Clusters that are unallocated
@@ -1146,7 +1149,9 @@ int is_windows_drive(const char *filename);
 void stream_start(const char *job_id, BlockDriverState *bs,
                   BlockDriverState *base, const char *backing_file_str,
                   int creation_flags, int64_t speed,
-                  BlockdevOnError on_error, Error **errp);
+                  BlockdevOnError on_error,
+                  const char *filter_node_name,
+                  Error **errp);
 
 /**
  * commit_start:
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 3c16f1e..32fb097 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -2533,6 +2533,11 @@
 #            'stop' and 'enospc' can only be used if the block device
 #            supports io-status (see BlockInfo).  Since 1.3.
 #
+# @filter-node-name: the node name that should be assigned to the
+#                    filter driver that the stream job inserts into the graph
+#                    above @device. If this option is not given, a node name is
+#                    autogenerated. (Since: 5.2)
+#
 # @auto-finalize: When false, this job will wait in a PENDING state after it has
 #                 finished its work, waiting for @block-job-finalize before
 #                 making any block graph changes.
@@ -2563,6 +2568,7 @@
   'data': { '*job-id': 'str', 'device': 'str', '*base': 'str',
             '*base-node': 'str', '*backing-file': 'str', '*speed': 'int',
             '*on-error': 'BlockdevOnError',
+            '*filter-node-name': 'str',
             '*auto-finalize': 'bool', '*auto-dismiss': 'bool' } }
 
 ##
-- 
1.8.3.1

[PATCH v9 4/9] copy-on-read: pass base node name to COR driver

[Andrey Shinkevich via]

To limit the guest's COR operations by the base node in the backing
chain during stream job, pass the base node name to the copy-on-read
driver. The rest of the functionality will be implemented in the patch
that follows.

Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
---
 block/copy-on-read.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/block/copy-on-read.c b/block/copy-on-read.c
index 3c8231f..e04092f 100644
--- a/block/copy-on-read.c
+++ b/block/copy-on-read.c
@@ -24,19 +24,23 @@
 #include "block/block_int.h"
 #include "qemu/module.h"
 #include "qapi/error.h"
+#include "qapi/qmp/qerror.h"
 #include "qapi/qmp/qdict.h"
 #include "block/copy-on-read.h"
 
 
 typedef struct BDRVStateCOR {
     bool active;
+    BlockDriverState *base_bs;
 } BDRVStateCOR;
 
 
 static int cor_open(BlockDriverState *bs, QDict *options, int flags,
                     Error **errp)
 {
+    BlockDriverState *base_bs = NULL;
     BDRVStateCOR *state = bs->opaque;
+    const char *base_node = qdict_get_try_str(options, "base");
 
     bs->file = bdrv_open_child(NULL, options, "file", bs, &child_of_bds,
                                BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY,
@@ -52,7 +56,16 @@ static int cor_open(BlockDriverState *bs, QDict *options, int flags,
         ((BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP | BDRV_REQ_NO_FALLBACK) &
             bs->file->bs->supported_zero_flags);
 
+    if (base_node) {
+        qdict_del(options, "base");
+        base_bs = bdrv_lookup_bs(NULL, base_node, errp);
+        if (!base_bs) {
+            error_setg(errp, QERR_BASE_NOT_FOUND, base_node);
+            return -EINVAL;
+        }
+    }
     state->active = true;
+    state->base_bs = base_bs;
 
     /*
      * We don't need to call bdrv_child_refresh_perms() now as the permissions
-- 
1.8.3.1

[PATCH v9 5/9] copy-on-read: limit guest COR activity to base in COR driver

[Andrey Shinkevich via]

Limit the guest's COR operations by the base node in the backing chain
when the base node name is given. It will be useful for a block stream
job when the COR-filter is applied.

Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
---
 block/copy-on-read.c | 38 ++++++++++++++++++++++++++++++++++++--
 1 file changed, 36 insertions(+), 2 deletions(-)

diff --git a/block/copy-on-read.c b/block/copy-on-read.c
index e04092f..f53f7e0 100644
--- a/block/copy-on-read.c
+++ b/block/copy-on-read.c
@@ -121,8 +121,42 @@ static int coroutine_fn cor_co_preadv_part(BlockDriverState *bs,
                                            size_t qiov_offset,
                                            int flags)
 {
-    return bdrv_co_preadv_part(bs->file, offset, bytes, qiov, qiov_offset,
-                               flags | BDRV_REQ_COPY_ON_READ);
+    int64_t n = 0;
+    int64_t size = offset + bytes;
+    int local_flags;
+    int ret;
+    BDRVStateCOR *state = bs->opaque;
+
+    if (!state->base_bs) {
+        return bdrv_co_preadv_part(bs->file, offset, bytes, qiov, qiov_offset,
+                                   flags | BDRV_REQ_COPY_ON_READ);
+    }
+
+    while (offset < size) {
+        local_flags = flags;
+
+        /* In case of failure, try to copy-on-read anyway */
+        ret = bdrv_is_allocated(bs->file->bs, offset, bytes, &n);
+        if (!ret) {
+            ret = bdrv_is_allocated_above(bdrv_cow_bs(bs->file->bs),
+                                          state->base_bs, false, offset, n, &n);
+            if (ret > 0) {
+                local_flags |= BDRV_REQ_COPY_ON_READ;
+            }
+        }
+
+        ret = bdrv_co_preadv_part(bs->file, offset, n, qiov, qiov_offset,
+                                  local_flags);
+        if (ret < 0) {
+            return ret;
+        }
+
+        offset += n;
+        qiov_offset += n;
+        bytes -= n;
+    }
+
+    return 0;
 }
 
 
-- 
1.8.3.1

[PATCH v9 6/9] copy-on-read: skip non-guest reads if no copy needed

[Andrey Shinkevich via]

If the flag BDRV_REQ_PREFETCH was set, pass it further to the
COR-driver to skip unneeded reading. It can be taken into account for
the COR-algorithms optimization. That check is being made during the
block stream job by the moment.

Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
---
 block/copy-on-read.c | 14 ++++++++++----
 block/io.c           |  2 +-
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/block/copy-on-read.c b/block/copy-on-read.c
index f53f7e0..5389dca 100644
--- a/block/copy-on-read.c
+++ b/block/copy-on-read.c
@@ -145,10 +145,16 @@ static int coroutine_fn cor_co_preadv_part(BlockDriverState *bs,
             }
         }
 
-        ret = bdrv_co_preadv_part(bs->file, offset, n, qiov, qiov_offset,
-                                  local_flags);
-        if (ret < 0) {
-            return ret;
+        if ((flags & BDRV_REQ_PREFETCH) &
+            !(local_flags & BDRV_REQ_COPY_ON_READ)) {
+            /* Skip non-guest reads if no copy needed */
+        } else {
+
+            ret = bdrv_co_preadv_part(bs->file, offset, n, qiov, qiov_offset,
+                                      local_flags);
+            if (ret < 0) {
+                return ret;
+            }
         }
 
         offset += n;
diff --git a/block/io.c b/block/io.c
index 11df188..62b75a5 100644
--- a/block/io.c
+++ b/block/io.c
@@ -1388,7 +1388,7 @@ static int coroutine_fn bdrv_co_do_copy_on_readv(BdrvChild *child,
             qemu_iovec_init_buf(&local_qiov, bounce_buffer, pnum);
 
             ret = bdrv_driver_preadv(bs, cluster_offset, pnum,
-                                     &local_qiov, 0, 0);
+                                     &local_qiov, 0, flags & BDRV_REQ_PREFETCH);
             if (ret < 0) {
                 goto err;
             }
-- 
1.8.3.1

[PATCH v9 7/9] stream: skip filters when writing backing file name to QCOW2 header

[Andrey Shinkevich via]

Avoid writing a filter JSON-name to QCOW2 image when the backing file
is changed after the block stream job.

Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
---
 block/stream.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/block/stream.c b/block/stream.c
index e0540ee..b0719e9 100644
--- a/block/stream.c
+++ b/block/stream.c
@@ -65,6 +65,7 @@ static int stream_prepare(Job *job)
     BlockDriverState *bs = blk_bs(bjob->blk);
     BlockDriverState *unfiltered_bs = bdrv_skip_filters(bs);
     BlockDriverState *base = bdrv_filter_or_cow_bs(s->above_base);
+    BlockDriverState *base_metadata = bdrv_skip_filters(base);
     Error *local_err = NULL;
     int ret = 0;
 
@@ -73,10 +74,10 @@ static int stream_prepare(Job *job)
 
     if (bdrv_cow_child(unfiltered_bs)) {
         const char *base_id = NULL, *base_fmt = NULL;
-        if (base) {
-            base_id = s->backing_file_str;
-            if (base->drv) {
-                base_fmt = base->drv->format_name;
+        if (base_metadata) {
+            base_id = base_metadata->filename;
+            if (base_metadata->drv) {
+                base_fmt = base_metadata->drv->format_name;
             }
         }
         bdrv_set_backing_hd(unfiltered_bs, base, &local_err);
-- 
1.8.3.1

[PATCH v9 8/9] block: remove unused backing-file name parameter

[Andrey Shinkevich via]

The block stream QMP parameter backing-file is in use no more. It
designates a backing file name to set in QCOW2 image header after the
block stream job finished. The base file name is used instead.

Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
---
 block/monitor/block-hmp-cmds.c |  2 +-
 block/stream.c                 |  6 +-----
 blockdev.c                     | 17 +----------------
 include/block/block_int.h      |  2 +-
 qapi/block-core.json           | 17 +----------------
 5 files changed, 5 insertions(+), 39 deletions(-)

diff --git a/block/monitor/block-hmp-cmds.c b/block/monitor/block-hmp-cmds.c
index 4e66775..5f19499 100644
--- a/block/monitor/block-hmp-cmds.c
+++ b/block/monitor/block-hmp-cmds.c
@@ -506,7 +506,7 @@ void hmp_block_stream(Monitor *mon, const QDict *qdict)
     int64_t speed = qdict_get_try_int(qdict, "speed", 0);
 
     qmp_block_stream(true, device, device, base != NULL, base, false, NULL,
-                     false, NULL, qdict_haskey(qdict, "speed"), speed, true,
+                     qdict_haskey(qdict, "speed"), speed, true,
                      BLOCKDEV_ON_ERROR_REPORT, false, NULL, false, false, false,
                      false, &error);
 
diff --git a/block/stream.c b/block/stream.c
index b0719e9..fe2663f 100644
--- a/block/stream.c
+++ b/block/stream.c
@@ -34,7 +34,6 @@ typedef struct StreamBlockJob {
     BlockDriverState *base_overlay; /* COW overlay (stream from this) */
     BlockDriverState *above_base;   /* Node directly above the base */
     BlockdevOnError on_error;
-    char *backing_file_str;
     bool bs_read_only;
     bool chain_frozen;
 } StreamBlockJob;
@@ -103,8 +102,6 @@ static void stream_clean(Job *job)
         blk_set_perm(bjob->blk, 0, BLK_PERM_ALL, &error_abort);
         bdrv_reopen_set_read_only(bs, true, NULL);
     }
-
-    g_free(s->backing_file_str);
 }
 
 static int coroutine_fn stream_run(Job *job, Error **errp)
@@ -220,7 +217,7 @@ static const BlockJobDriver stream_job_driver = {
 };
 
 void stream_start(const char *job_id, BlockDriverState *bs,
-                  BlockDriverState *base, const char *backing_file_str,
+                  BlockDriverState *base,
                   int creation_flags, int64_t speed,
                   BlockdevOnError on_error,
                   const char *filter_node_name,
@@ -295,7 +292,6 @@ void stream_start(const char *job_id, BlockDriverState *bs,
 
     s->base_overlay = base_overlay;
     s->above_base = above_base;
-    s->backing_file_str = g_strdup(backing_file_str);
     s->bs_read_only = bs_read_only;
     s->chain_frozen = true;
 
diff --git a/blockdev.c b/blockdev.c
index d719c47..b223601 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -2486,7 +2486,6 @@ out:
 void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
                       bool has_base, const char *base,
                       bool has_base_node, const char *base_node,
-                      bool has_backing_file, const char *backing_file,
                       bool has_speed, int64_t speed,
                       bool has_on_error, BlockdevOnError on_error,
                       bool has_filter_node_name, const char *filter_node_name,
@@ -2498,7 +2497,6 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
     BlockDriverState *base_bs = NULL;
     AioContext *aio_context;
     Error *local_err = NULL;
-    const char *base_name = NULL;
     int job_flags = JOB_DEFAULT;
 
     if (!has_on_error) {
@@ -2526,7 +2524,6 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
             goto out;
         }
         assert(bdrv_get_aio_context(base_bs) == aio_context);
-        base_name = base;
     }
 
     if (has_base_node) {
@@ -2541,7 +2538,6 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
         }
         assert(bdrv_get_aio_context(base_bs) == aio_context);
         bdrv_refresh_filename(base_bs);
-        base_name = base_bs->filename;
     }
 
     /* Check for op blockers in the whole chain between bs and base */
@@ -2553,17 +2549,6 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
         }
     }
 
-    /* if we are streaming the entire chain, the result will have no backing
-     * file, and specifying one is therefore an error */
-    if (base_bs == NULL && has_backing_file) {
-        error_setg(errp, "backing file specified, but streaming the "
-                         "entire chain");
-        goto out;
-    }
-
-    /* backing_file string overrides base bs filename */
-    base_name = has_backing_file ? backing_file : base_name;
-
     if (has_auto_finalize && !auto_finalize) {
         job_flags |= JOB_MANUAL_FINALIZE;
     }
@@ -2571,7 +2556,7 @@ void qmp_block_stream(bool has_job_id, const char *job_id, const char *device,
         job_flags |= JOB_MANUAL_DISMISS;
     }
 
-    stream_start(has_job_id ? job_id : NULL, bs, base_bs, base_name,
+    stream_start(has_job_id ? job_id : NULL, bs, base_bs,
                  job_flags, has_speed ? speed : 0, on_error,
                  filter_node_name, &local_err);
     if (local_err) {
diff --git a/include/block/block_int.h b/include/block/block_int.h
index f782737..bbe2ee6 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -1147,7 +1147,7 @@ int is_windows_drive(const char *filename);
  * BlockDriverState.
  */
 void stream_start(const char *job_id, BlockDriverState *bs,
-                  BlockDriverState *base, const char *backing_file_str,
+                  BlockDriverState *base,
                   int creation_flags, int64_t speed,
                   BlockdevOnError on_error,
                   const char *filter_node_name,
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 32fb097..6358606 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -2512,21 +2512,6 @@
 # @base-node: the node name of the backing file.
 #             It cannot be set if @base is also set. (Since 2.8)
 #
-# @backing-file: The backing file string to write into the top
-#                image. This filename is not validated.
-#
-#                If a pathname string is such that it cannot be
-#                resolved by QEMU, that means that subsequent QMP or
-#                HMP commands must use node-names for the image in
-#                question, as filename lookup methods will fail.
-#
-#                If not specified, QEMU will automatically determine
-#                the backing file string to use, or error out if there
-#                is no obvious choice.  Care should be taken when
-#                specifying the string, to specify a valid filename or
-#                protocol.
-#                (Since 2.1)
-#
 # @speed: the maximum speed, in bytes per second
 #
 # @on-error: the action to take on an error (default report).
@@ -2566,7 +2551,7 @@
 ##
 { 'command': 'block-stream',
   'data': { '*job-id': 'str', 'device': 'str', '*base': 'str',
-            '*base-node': 'str', '*backing-file': 'str', '*speed': 'int',
+            '*base-node': 'str', '*speed': 'int',
             '*on-error': 'BlockdevOnError',
             '*filter-node-name': 'str',
             '*auto-finalize': 'bool', '*auto-dismiss': 'bool' } }
-- 
1.8.3.1

[PATCH v9 9/9] block: apply COR-filter to block-stream jobs

[Andrey Shinkevich via]

This patch completes the series with the COR-filter insertion for
block-stream operations. Adding the filter makes it possible for copied
regions to be discarded in backing files during the block-stream job,
what will reduce the disk overuse.
The COR-filter insertion incurs changes in the iotests case
245:test_block_stream_4 that reopens the backing chain during a
block-stream job. There are changes in the iotests #030 as well.
The iotests case 030:test_stream_parallel was deleted due to multiple
conflicts between the concurrent job operations over the same backing
chain. The base backing node for one job is the top node for another
job. It may change due to the filter node inserted into the backing
chain while both jobs are running. Another issue is that the parts of
the backing chain are being frozen by the running job and may not be
changed by the concurrent job when needed. The concept of the parallel
jobs with common nodes is considered vital no more.

Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
---
 block/stream.c             | 93 ++++++++++++++++++++++++++++++----------------
 tests/qemu-iotests/030     | 51 +++----------------------
 tests/qemu-iotests/030.out |  4 +-
 tests/qemu-iotests/141.out |  2 +-
 tests/qemu-iotests/245     | 19 +++++++---
 5 files changed, 83 insertions(+), 86 deletions(-)

diff --git a/block/stream.c b/block/stream.c
index fe2663f..240b3dc 100644
--- a/block/stream.c
+++ b/block/stream.c
@@ -17,8 +17,10 @@
 #include "block/blockjob_int.h"
 #include "qapi/error.h"
 #include "qapi/qmp/qerror.h"
+#include "qapi/qmp/qdict.h"
 #include "qemu/ratelimit.h"
 #include "sysemu/block-backend.h"
+#include "block/copy-on-read.h"
 
 enum {
     /*
@@ -33,6 +35,8 @@ typedef struct StreamBlockJob {
     BlockJob common;
     BlockDriverState *base_overlay; /* COW overlay (stream from this) */
     BlockDriverState *above_base;   /* Node directly above the base */
+    BlockDriverState *cor_filter_bs;
+    BlockDriverState *target_bs;
     BlockdevOnError on_error;
     bool bs_read_only;
     bool chain_frozen;
@@ -52,23 +56,20 @@ static void stream_abort(Job *job)
     StreamBlockJob *s = container_of(job, StreamBlockJob, common.job);
 
     if (s->chain_frozen) {
-        BlockJob *bjob = &s->common;
-        bdrv_unfreeze_backing_chain(blk_bs(bjob->blk), s->above_base);
+        bdrv_unfreeze_backing_chain(s->cor_filter_bs, s->above_base);
     }
 }
 
 static int stream_prepare(Job *job)
 {
     StreamBlockJob *s = container_of(job, StreamBlockJob, common.job);
-    BlockJob *bjob = &s->common;
-    BlockDriverState *bs = blk_bs(bjob->blk);
-    BlockDriverState *unfiltered_bs = bdrv_skip_filters(bs);
+    BlockDriverState *unfiltered_bs = bdrv_skip_filters(s->target_bs);
     BlockDriverState *base = bdrv_filter_or_cow_bs(s->above_base);
     BlockDriverState *base_metadata = bdrv_skip_filters(base);
     Error *local_err = NULL;
     int ret = 0;
 
-    bdrv_unfreeze_backing_chain(bs, s->above_base);
+    bdrv_unfreeze_backing_chain(s->cor_filter_bs, s->above_base);
     s->chain_frozen = false;
 
     if (bdrv_cow_child(unfiltered_bs)) {
@@ -94,13 +95,14 @@ static void stream_clean(Job *job)
 {
     StreamBlockJob *s = container_of(job, StreamBlockJob, common.job);
     BlockJob *bjob = &s->common;
-    BlockDriverState *bs = blk_bs(bjob->blk);
+
+    bdrv_cor_filter_drop(s->cor_filter_bs);
 
     /* Reopen the image back in read-only mode if necessary */
     if (s->bs_read_only) {
         /* Give up write permissions before making it read-only */
         blk_set_perm(bjob->blk, 0, BLK_PERM_ALL, &error_abort);
-        bdrv_reopen_set_read_only(bs, true, NULL);
+        bdrv_reopen_set_read_only(s->target_bs, true, NULL);
     }
 }
 
@@ -108,9 +110,7 @@ static int coroutine_fn stream_run(Job *job, Error **errp)
 {
     StreamBlockJob *s = container_of(job, StreamBlockJob, common.job);
     BlockBackend *blk = s->common.blk;
-    BlockDriverState *bs = blk_bs(blk);
-    BlockDriverState *unfiltered_bs = bdrv_skip_filters(bs);
-    bool enable_cor = !bdrv_cow_child(s->base_overlay);
+    BlockDriverState *unfiltered_bs = bdrv_skip_filters(s->target_bs);
     int64_t len;
     int64_t offset = 0;
     uint64_t delay_ns = 0;
@@ -122,21 +122,12 @@ static int coroutine_fn stream_run(Job *job, Error **errp)
         return 0;
     }
 
-    len = bdrv_getlength(bs);
+    len = bdrv_getlength(s->target_bs);
     if (len < 0) {
         return len;
     }
     job_progress_set_remaining(&s->common.job, len);
 
-    /* Turn on copy-on-read for the whole block device so that guest read
-     * requests help us make progress.  Only do this when copying the entire
-     * backing chain since the copy-on-read operation does not take base into
-     * account.
-     */
-    if (enable_cor) {
-        bdrv_enable_copy_on_read(bs);
-    }
-
     for ( ; offset < len; offset += n) {
         bool copy;
         int ret;
@@ -195,10 +186,6 @@ static int coroutine_fn stream_run(Job *job, Error **errp)
         }
     }
 
-    if (enable_cor) {
-        bdrv_disable_copy_on_read(bs);
-    }
-
     /* Do not remove the backing file if an error was there but ignored. */
     return error;
 }
@@ -228,6 +215,7 @@ void stream_start(const char *job_id, BlockDriverState *bs,
     bool bs_read_only;
     int basic_flags = BLK_PERM_CONSISTENT_READ | BLK_PERM_WRITE_UNCHANGED;
     BlockDriverState *base_overlay = bdrv_find_overlay(bs, base);
+    BlockDriverState *cor_filter_bs = NULL;
     BlockDriverState *above_base;
 
     if (!base_overlay) {
@@ -262,17 +250,51 @@ void stream_start(const char *job_id, BlockDriverState *bs,
         }
     }
 
-    /* Prevent concurrent jobs trying to modify the graph structure here, we
-     * already have our own plans. Also don't allow resize as the image size is
-     * queried only at the job start and then cached. */
-    s = block_job_create(job_id, &stream_job_driver, NULL, bs,
-                         basic_flags | BLK_PERM_GRAPH_MOD,
-                         basic_flags | BLK_PERM_WRITE,
+    QDict *opts = qdict_new();
+
+    qdict_put_str(opts, "driver", "copy-on-read");
+    qdict_put_str(opts, "file", bdrv_get_node_name(bs));
+    if (base) {
+        qdict_put_str(opts, "base", base->node_name);
+    }
+    if (filter_node_name) {
+        qdict_put_str(opts, "node-name", filter_node_name);
+    }
+
+    cor_filter_bs = bdrv_cor_filter_append(bs, opts, BDRV_O_RDWR, errp);
+    if (cor_filter_bs == NULL) {
+        goto fail;
+    }
+
+    if (!filter_node_name) {
+        cor_filter_bs->implicit = true;
+    }
+
+    if (bdrv_freeze_backing_chain(cor_filter_bs, bs, errp) < 0) {
+        bdrv_cor_filter_drop(cor_filter_bs);
+        cor_filter_bs = NULL;
+        goto fail;
+    }
+
+    s = block_job_create(job_id, &stream_job_driver, NULL, cor_filter_bs,
+                         BLK_PERM_CONSISTENT_READ,
+                         basic_flags | BLK_PERM_WRITE | BLK_PERM_GRAPH_MOD,
                          speed, creation_flags, NULL, NULL, errp);
     if (!s) {
         goto fail;
     }
 
+    /*
+     * Prevent concurrent jobs trying to modify the graph structure here, we
+     * already have our own plans. Also don't allow resize as the image size is
+     * queried only at the job start and then cached.
+     */
+    if (block_job_add_bdrv(&s->common, "active node", bs,
+                           basic_flags | BLK_PERM_GRAPH_MOD,
+                           basic_flags | BLK_PERM_WRITE, &error_abort)) {
+        goto fail;
+    }
+
     /* Block all intermediate nodes between bs and base, because they will
      * disappear from the chain after this operation. The streaming job reads
      * every block only once, assuming that it doesn't change, so forbid writes
@@ -292,6 +314,8 @@ void stream_start(const char *job_id, BlockDriverState *bs,
 
     s->base_overlay = base_overlay;
     s->above_base = above_base;
+    s->cor_filter_bs = cor_filter_bs;
+    s->target_bs = bs;
     s->bs_read_only = bs_read_only;
     s->chain_frozen = true;
 
@@ -304,5 +328,10 @@ fail:
     if (bs_read_only) {
         bdrv_reopen_set_read_only(bs, true, NULL);
     }
-    bdrv_unfreeze_backing_chain(bs, above_base);
+    if (cor_filter_bs) {
+        bdrv_unfreeze_backing_chain(cor_filter_bs, above_base);
+        bdrv_cor_filter_drop(cor_filter_bs);
+    } else {
+        bdrv_unfreeze_backing_chain(bs, above_base);
+    }
 }
diff --git a/tests/qemu-iotests/030 b/tests/qemu-iotests/030
index dcb4b5d..0064590 100755
--- a/tests/qemu-iotests/030
+++ b/tests/qemu-iotests/030
@@ -227,61 +227,20 @@ class TestParallelOps(iotests.QMPTestCase):
         for img in self.imgs:
             os.remove(img)
 
-    # Test that it's possible to run several block-stream operations
-    # in parallel in the same snapshot chain
-    @unittest.skipIf(os.environ.get('QEMU_CHECK_BLOCK_AUTO'), 'disabled in CI')
-    def test_stream_parallel(self):
-        self.assert_no_active_block_jobs()
-
-        # Check that the maps don't match before the streaming operations
-        for i in range(2, self.num_imgs, 2):
-            self.assertNotEqual(qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[i]),
-                                qemu_io('-f', iotests.imgfmt, '-rU', '-c', 'map', self.imgs[i-1]),
-                                'image file map matches backing file before streaming')
-
-        # Create all streaming jobs
-        pending_jobs = []
-        for i in range(2, self.num_imgs, 2):
-            node_name = 'node%d' % i
-            job_id = 'stream-%s' % node_name
-            pending_jobs.append(job_id)
-            result = self.vm.qmp('block-stream', device=node_name, job_id=job_id, base=self.imgs[i-2], speed=1024)
-            self.assert_qmp(result, 'return', {})
-
-        for job in pending_jobs:
-            result = self.vm.qmp('block-job-set-speed', device=job, speed=0)
-            self.assert_qmp(result, 'return', {})
-
-        # Wait for all jobs to be finished.
-        while len(pending_jobs) > 0:
-            for event in self.vm.get_qmp_events(wait=True):
-                if event['event'] == 'BLOCK_JOB_COMPLETED':
-                    job_id = self.dictpath(event, 'data/device')
-                    self.assertTrue(job_id in pending_jobs)
-                    self.assert_qmp_absent(event, 'data/error')
-                    pending_jobs.remove(job_id)
-
-        self.assert_no_active_block_jobs()
-        self.vm.shutdown()
-
-        # Check that all maps match now
-        for i in range(2, self.num_imgs, 2):
-            self.assertEqual(qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i]),
-                             qemu_io('-f', iotests.imgfmt, '-c', 'map', self.imgs[i-1]),
-                             'image file map does not match backing file after streaming')
-
     # Test that it's not possible to perform two block-stream
     # operations if there are nodes involved in both.
     def test_overlapping_1(self):
         self.assert_no_active_block_jobs()
 
         # Set a speed limit to make sure that this job blocks the rest
-        result = self.vm.qmp('block-stream', device='node4', job_id='stream-node4', base=self.imgs[1], speed=1024*1024)
+        result = self.vm.qmp('block-stream', device='node4',
+                             job_id='stream-node4', base=self.imgs[1],
+                             filter_node_name='stream-filter', speed=1024*1024)
         self.assert_qmp(result, 'return', {})
 
         result = self.vm.qmp('block-stream', device='node5', job_id='stream-node5', base=self.imgs[2])
         self.assert_qmp(result, 'error/desc',
-            "Node 'node4' is busy: block device is in use by block job: stream")
+            "Node 'stream-filter' is busy: block device is in use by block job: stream")
 
         result = self.vm.qmp('block-stream', device='node3', job_id='stream-node3', base=self.imgs[2])
         self.assert_qmp(result, 'error/desc',
@@ -294,7 +253,7 @@ class TestParallelOps(iotests.QMPTestCase):
         # block-commit should also fail if it touches nodes used by the stream job
         result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[4], job_id='commit-node4')
         self.assert_qmp(result, 'error/desc',
-            "Node 'node4' is busy: block device is in use by block job: stream")
+            "Node 'stream-filter' is busy: block device is in use by block job: stream")
 
         result = self.vm.qmp('block-commit', device='drive0', base=self.imgs[1], top=self.imgs[3], job_id='commit-node1')
         self.assert_qmp(result, 'error/desc',
diff --git a/tests/qemu-iotests/030.out b/tests/qemu-iotests/030.out
index 6d9bee1..5eb508d 100644
--- a/tests/qemu-iotests/030.out
+++ b/tests/qemu-iotests/030.out
@@ -1,5 +1,5 @@
-...........................
+..........................
 ----------------------------------------------------------------------
-Ran 27 tests
+Ran 26 tests
 
 OK
diff --git a/tests/qemu-iotests/141.out b/tests/qemu-iotests/141.out
index 08e0aec..028a16f 100644
--- a/tests/qemu-iotests/141.out
+++ b/tests/qemu-iotests/141.out
@@ -99,7 +99,7 @@ wrote 1048576/1048576 bytes at offset 0
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "created", "id": "job0"}}
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "running", "id": "job0"}}
 {'execute': 'blockdev-del', 'arguments': {'node-name': 'drv0'}}
-{"error": {"class": "GenericError", "desc": "Node drv0 is in use"}}
+{"error": {"class": "GenericError", "desc": "Node 'drv0' is busy: block device is in use by block job: stream"}}
 {'execute': 'block-job-cancel', 'arguments': {'device': 'job0'}}
 {"return": {}}
 {"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "aborting", "id": "job0"}}
diff --git a/tests/qemu-iotests/245 b/tests/qemu-iotests/245
index e60c832..940e85a 100755
--- a/tests/qemu-iotests/245
+++ b/tests/qemu-iotests/245
@@ -899,17 +899,26 @@ class TestBlockdevReopen(iotests.QMPTestCase):
         # make hd1 read-only and block-stream requires it to be read-write
         # (Which error message appears depends on whether the stream job is
         # already done with copying at this point.)
-        self.reopen(opts, {},
+        # As the COR-filter node is inserted into the backing chain with the
+        # 'block-stream' operation, we move the options to their proper nodes.
+        opts = hd_opts(1)
+        opts['backing'] = hd_opts(2)
+        opts['backing']['backing'] = None
+        self.reopen(opts, {'read-only': True},
             ["Can't set node 'hd1' to r/o with copy-on-read enabled",
              "Cannot make block node read-only, there is a writer on it"])
 
         # We can't remove hd2 while the stream job is ongoing
-        opts['backing']['backing'] = None
-        self.reopen(opts, {'backing.read-only': False}, "Cannot change 'backing' link from 'hd1' to 'hd2'")
+        opts['backing'] = None
+        self.reopen(opts, {'read-only': False},
+                    "Cannot change 'backing' link from 'hd1' to 'hd2'")
 
-        # We can detach hd1 from hd0 because it doesn't affect the stream job
+        # We can't detach hd1 from hd0 because there is the COR-filter implicit
+        # node in between.
+        opts = hd_opts(0)
         opts['backing'] = None
-        self.reopen(opts)
+        self.reopen(opts, {},
+                    "Cannot change backing link if 'hd0' has an implicit backing file")
 
         self.vm.run_job('stream0', auto_finalize = False, auto_dismiss = True)
 
-- 
1.8.3.1

Re: [PATCH v9 0/9] Apply COR-filter to the block-stream permanently

[no-reply]

Patchew URL: https://patchew.org/QEMU/1601298001-774096-1-git-send-email-andrey.shinkevich@virtuozzo.com/



Hi,

This series failed the docker-mingw@fedora build test. Please find the testing commands and
their output below. If you have Docker installed, you can probably reproduce it
locally.

=== TEST SCRIPT BEGIN ===
#! /bin/bash
export ARCH=x86_64
make docker-image-fedora V=1 NETWORK=1
time make docker-test-mingw@fedora J=14 NETWORK=1
=== TEST SCRIPT END ===

Host machine cpu: x86_64
Target machine cpu family: x86
Target machine cpu: x86_64
../src/meson.build:10: WARNING: Module unstable-keyval has no backwards or forwards compatibility and might not exist in future releases.
Program sh found: YES
Program python3 found: YES (/usr/bin/python3)
Configuring ninjatool using configuration
---
Compiling C object libblock.fa.p/block_bochs.c.obj
Compiling C object libblock.fa.p/block_filter-compress.c.obj
Compiling C object libblock.fa.p/block_qcow2.c.obj
../src/block/copy-on-read.c:29:10: fatal error: block/copy-on-read.h: No such file or directory
   29 | #include "block/copy-on-read.h"
      |          ^~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
make: *** [Makefile.ninja:887: libblock.fa.p/block_copy-on-read.c.obj] Error 1
make: *** Waiting for unfinished jobs....
Traceback (most recent call last):
  File "./tests/docker/docker.py", line 709, in <module>
---
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['sudo', '-n', 'docker', 'run', '--rm', '--label', 'com.qemu.instance.uuid=026d51a22d8649ff831a9ab8a97ffff0', '-u', '1003', '--security-opt', 'seccomp=unconfined', '-e', 'TARGET_LIST=', '-e', 'EXTRA_CONFIGURE_OPTS=', '-e', 'V=', '-e', 'J=14', '-e', 'DEBUG=', '-e', 'SHOW_ENV=', '-e', 'CCACHE_DIR=/var/tmp/ccache', '-v', '/home/patchew2/.cache/qemu-docker-ccache:/var/tmp/ccache:z', '-v', '/var/tmp/patchew-tester-tmp-_5yio3yh/src/docker-src.2020-09-28-16.28.55.8469:/var/tmp/qemu:z,ro', 'qemu/fedora', '/var/tmp/qemu/run', 'test-mingw']' returned non-zero exit status 2.
filter=--filter=label=com.qemu.instance.uuid=026d51a22d8649ff831a9ab8a97ffff0
make[1]: *** [docker-run] Error 1
make[1]: Leaving directory `/var/tmp/patchew-tester-tmp-_5yio3yh/src'
make: *** [docker-run-test-mingw@fedora] Error 2

real    4m33.430s
user    0m18.970s


The full log is available at
http://patchew.org/logs/1601298001-774096-1-git-send-email-andrey.shinkevich@virtuozzo.com/testing.docker-mingw@fedora/?type=message.
---
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Please send your feedback to patchew-devel@redhat.com

Re: [PATCH v9 0/9] Apply COR-filter to the block-stream permanently

[no-reply]

Patchew URL: https://patchew.org/QEMU/1601298001-774096-1-git-send-email-andrey.shinkevich@virtuozzo.com/



Hi,

This series failed the docker-quick@centos7 build test. Please find the testing commands and
their output below. If you have Docker installed, you can probably reproduce it
locally.

=== TEST SCRIPT BEGIN ===
#!/bin/bash
make docker-image-centos7 V=1 NETWORK=1
time make docker-test-quick@centos7 SHOW_ENV=1 J=14 NETWORK=1
=== TEST SCRIPT END ===

C linker for the host machine: cc ld.bfd 2.27-43
Host machine cpu family: x86_64
Host machine cpu: x86_64
../src/meson.build:10: WARNING: Module unstable-keyval has no backwards or forwards compatibility and might not exist in future releases.
Program sh found: YES
Program python3 found: YES (/usr/bin/python3)
Configuring ninjatool using configuration
---
Compiling C object libblock.fa.p/block_dmg-bz2.c.o
Compiling C object libblock.fa.p/block_amend.c.o
Compiling C object libblock.fa.p/block_qcow2-snapshot.c.o
../src/block/copy-on-read.c:29:32: fatal error: block/copy-on-read.h: No such file or directory
 #include "block/copy-on-read.h"
                                ^
compilation terminated.
---
Compiling C object libblock.fa.p/block_throttle-groups.c.o
Compiling C object libblock.fa.p/block_accounting.c.o
Compiling C object libblock.fa.p/block_nbd.c.o
make: *** [libblock.fa.p/block_copy-on-read.c.o] Error 1
make: *** Waiting for unfinished jobs....
Traceback (most recent call last):
  File "./tests/docker/docker.py", line 709, in <module>
---
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['sudo', '-n', 'docker', 'run', '--rm', '--label', 'com.qemu.instance.uuid=b2dcb88c84fa430991604513a90c8435', '-u', '1003', '--security-opt', 'seccomp=unconfined', '-e', 'TARGET_LIST=', '-e', 'EXTRA_CONFIGURE_OPTS=', '-e', 'V=', '-e', 'J=14', '-e', 'DEBUG=', '-e', 'SHOW_ENV=1', '-e', 'CCACHE_DIR=/var/tmp/ccache', '-v', '/home/patchew2/.cache/qemu-docker-ccache:/var/tmp/ccache:z', '-v', '/var/tmp/patchew-tester-tmp-8zvp7iz2/src/docker-src.2020-09-28-16.33.58.15775:/var/tmp/qemu:z,ro', 'qemu/centos7', '/var/tmp/qemu/run', 'test-quick']' returned non-zero exit status 2.
filter=--filter=label=com.qemu.instance.uuid=b2dcb88c84fa430991604513a90c8435
make[1]: *** [docker-run] Error 1
make[1]: Leaving directory `/var/tmp/patchew-tester-tmp-8zvp7iz2/src'
make: *** [docker-run-test-quick@centos7] Error 2

real    3m24.503s
user    0m18.816s


The full log is available at
http://patchew.org/logs/1601298001-774096-1-git-send-email-andrey.shinkevich@virtuozzo.com/testing.docker-quick@centos7/?type=message.
---
Email generated automatically by Patchew [https://patchew.org/].
Please send your feedback to patchew-devel@redhat.com