[v3,10/35] block/backup: set copy_range and compress after filter insertion

Commit Message

Vladimir Sementsov-Ogievskiy June 1, 2021, 4:50 p.m. UTC

We are going to publish copy-before-write filter, so it would be
initialized through options. Still we don't want to publish compress
and copy-range options, as

1. Modern way to enable compression is to use compress filter.

2. For copy-range it's unclean how to make proper interface:
 - it's has experimental prefix for backup job anyway
 - the whole BackupPerf structure doesn't make sense for the filter
 So, let's just add copy-range possibility to the filter later if
 needed.

Still, we are going to continue support for compression and
experimental copy-range in backup job. So, set these options after
filter creation.

Note, that we can drop "compress" argument of bdrv_cbw_append() now, as
well as "perf". The only reason not doing so is that now, when I
prepare this patch the big series around it is already reviewed and I
want to avoid extra rebase conflicts to simplify review of the
following version.

Signed-off-by: Vladimir Sementsov-Ogievskiy <[e-mail]>
---
 block/copy-before-write.h | 1 -
 block/backup.c            | 3 ++-
 block/copy-before-write.c | 4 +---
 3 files changed, 3 insertions(+), 5 deletions(-)

Patch

diff --git a/block/copy-before-write.h b/block/copy-before-write.h
index f37e2249ae..538aab8bdb 100644
--- a/block/copy-before-write.h
+++ b/block/copy-before-write.h
@@ -33,7 +33,6 @@  BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
                                   BlockDriverState *target,
                                   const char *filter_node_name,
                                   uint64_t cluster_size,
-                                  BackupPerf *perf,
                                   bool compress,
                                   BlockCopyState **bcs,
                                   Error **errp);
diff --git a/block/backup.c b/block/backup.c
index 84f9a5f02c..b31fd99ab3 100644
--- a/block/backup.c
+++ b/block/backup.c
@@ -504,7 +504,7 @@  BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
     }
 
     cbw = bdrv_cbw_append(bs, target, filter_node_name,
-                          cluster_size, perf, compress, &bcs, errp);
+                          cluster_size, false, &bcs, errp);
     if (!cbw) {
         goto error;
     }
@@ -530,6 +530,7 @@  BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
     job->len = len;
     job->perf = *perf;
 
+    block_copy_set_copy_opts(bcs, perf->use_copy_range, compress);
     block_copy_set_progress_meter(bcs, &job->common.job.progress);
     block_copy_set_speed(bcs, speed);
 
diff --git a/block/copy-before-write.c b/block/copy-before-write.c
index 4337076c1c..235251a640 100644
--- a/block/copy-before-write.c
+++ b/block/copy-before-write.c
@@ -170,7 +170,6 @@  BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
                                   BlockDriverState *target,
                                   const char *filter_node_name,
                                   uint64_t cluster_size,
-                                  BackupPerf *perf,
                                   bool compress,
                                   BlockCopyState **bcs,
                                   Error **errp)
@@ -217,8 +216,7 @@  BlockDriverState *bdrv_cbw_append(BlockDriverState *source,
 
     state->cluster_size = cluster_size;
     state->bcs = block_copy_state_new(top->backing, state->target,
-                                      cluster_size, perf->use_copy_range,
-                                      compress, errp);
+                                      cluster_size, false, compress, errp);
     if (!state->bcs) {
         error_prepend(errp, "Cannot create block-copy-state: ");
         goto fail;