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qapi: backup: add max-chunk and max-workers to x-perf struct

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Add new parameters to configure future backup features. The patch
doesn't introduce aio backup requests (so we actually have only one
worker) neither requests larger than one cluster. Still, formally we
satisfy these maximums anyway, so add the parameters now, to facilitate
further patch which will really change backup job behavior.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210116214705.822267-11-vsementsov@virtuozzo.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2021-01-17 00:46:52 +03:00 • committed by Max Reitz
parent 3ee1483b95
commit 2c59fd833a
4 changed files with 43 additions and 8 deletions
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8
blockdev.c
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@ -2829,7 +2829,7 @@ static BlockJob *do_backup_common(BackupCommon *backup,
{
BlockJob *job = NULL;
BdrvDirtyBitmap *bmap = NULL;
BackupPerf perf = { .use_copy_range = true };
BackupPerf perf = { .use_copy_range = true, .max_workers = 64 };
int job_flags = JOB_DEFAULT;
if (!backup->has_speed) {
@ -2858,6 +2858,12 @@ static BlockJob *do_backup_common(BackupCommon *backup,
if (backup->x_perf->has_use_copy_range) {
perf.use_copy_range = backup->x_perf->use_copy_range;
}
if (backup->x_perf->has_max_workers) {
perf.max_workers = backup->x_perf->max_workers;
}
if (backup->x_perf->has_max_chunk) {
perf.max_chunk = backup->x_perf->max_chunk;
}
}
if ((backup->sync == MIRROR_SYNC_MODE_BITMAP) ||