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authorIlya Dryomov <idryomov@gmail.com>2020-05-29 20:51:23 +0200
committerIlya Dryomov <idryomov@gmail.com>2020-06-01 23:32:35 +0200
commitdc1dad8e1a612650b1e786e992cb0c6e101e226a (patch)
tree41f1f59f540cdbd6abebf99ab7146129d3c098a3 /drivers/block/rbd.c
parentd3798acc094c8ff2406e9acc7a9b2c09da994616 (diff)
rbd: compression_hint option
Allow hinting to bluestore if the data should/should not be compressed. The default is to not hint (compression_hint=none). Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Jason Dillaman <dillaman@redhat.com>
Diffstat (limited to 'drivers/block/rbd.c')
-rw-r--r--drivers/block/rbd.c43
1 files changed, 42 insertions, 1 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 97e102ea03e0..7420648a1de6 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -836,6 +836,7 @@ enum {
Opt_lock_timeout,
/* int args above */
Opt_pool_ns,
+ Opt_compression_hint,
/* string args above */
Opt_read_only,
Opt_read_write,
@@ -844,8 +845,23 @@ enum {
Opt_notrim,
};
+enum {
+ Opt_compression_hint_none,
+ Opt_compression_hint_compressible,
+ Opt_compression_hint_incompressible,
+};
+
+static const struct constant_table rbd_param_compression_hint[] = {
+ {"none", Opt_compression_hint_none},
+ {"compressible", Opt_compression_hint_compressible},
+ {"incompressible", Opt_compression_hint_incompressible},
+ {}
+};
+
static const struct fs_parameter_spec rbd_parameters[] = {
fsparam_u32 ("alloc_size", Opt_alloc_size),
+ fsparam_enum ("compression_hint", Opt_compression_hint,
+ rbd_param_compression_hint),
fsparam_flag ("exclusive", Opt_exclusive),
fsparam_flag ("lock_on_read", Opt_lock_on_read),
fsparam_u32 ("lock_timeout", Opt_lock_timeout),
@@ -867,6 +883,8 @@ struct rbd_options {
bool lock_on_read;
bool exclusive;
bool trim;
+
+ u32 alloc_hint_flags; /* CEPH_OSD_OP_ALLOC_HINT_FLAG_* */
};
#define RBD_QUEUE_DEPTH_DEFAULT BLKDEV_MAX_RQ
@@ -2254,7 +2272,7 @@ static void __rbd_osd_setup_write_ops(struct ceph_osd_request *osd_req,
osd_req_op_alloc_hint_init(osd_req, which++,
rbd_dev->layout.object_size,
rbd_dev->layout.object_size,
- 0);
+ rbd_dev->opts->alloc_hint_flags);
}
if (rbd_obj_is_entire(obj_req))
@@ -6332,6 +6350,29 @@ static int rbd_parse_param(struct fs_parameter *param,
pctx->spec->pool_ns = param->string;
param->string = NULL;
break;
+ case Opt_compression_hint:
+ switch (result.uint_32) {
+ case Opt_compression_hint_none:
+ opt->alloc_hint_flags &=
+ ~(CEPH_OSD_ALLOC_HINT_FLAG_COMPRESSIBLE |
+ CEPH_OSD_ALLOC_HINT_FLAG_INCOMPRESSIBLE);
+ break;
+ case Opt_compression_hint_compressible:
+ opt->alloc_hint_flags |=
+ CEPH_OSD_ALLOC_HINT_FLAG_COMPRESSIBLE;
+ opt->alloc_hint_flags &=
+ ~CEPH_OSD_ALLOC_HINT_FLAG_INCOMPRESSIBLE;
+ break;
+ case Opt_compression_hint_incompressible:
+ opt->alloc_hint_flags |=
+ CEPH_OSD_ALLOC_HINT_FLAG_INCOMPRESSIBLE;
+ opt->alloc_hint_flags &=
+ ~CEPH_OSD_ALLOC_HINT_FLAG_COMPRESSIBLE;
+ break;
+ default:
+ BUG();
+ }
+ break;
case Opt_read_only:
opt->read_only = true;
break;