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libceph: introduce and start using oid abstraction

Browse source 
In preparation for tiering support, which would require having two
(base and target) object names for each osd request and also copying
those names around, introduce struct ceph_object_id (oid) and a couple
helpers to facilitate those copies and encapsulate the fact that object
name is not necessarily a NUL-terminated string.

Signed-off-by: Ilya Dryomov <[email protected]>
Reviewed-by: Sage Weil <[email protected]>
This commit is contained in:
Ilya Dryomov 2014-01-27 17:40:18 +02:00
commit 4295f2217a
5 changed files with 50 additions and 25 deletions
Download patch file Download diff file Expand all files Collapse all files

3
net/ceph/debugfs.c
View file

@ -132,7 +132,8 @@ static int osdc_show(struct seq_file *s, void *pp)
req->r_osd ? req->r_osd->o_osd : -1,
req->r_pgid.pool, req->r_pgid.seed);
seq_printf(s, "%.*s", req->r_oid_len, req->r_oid);
seq_printf(s, "%.*s", req->r_oid.name_len,
req->r_oid.name);
if (req->r_reassert_version.epoch)
seq_printf(s, "\t%u'%llu",

17
net/ceph/osd_client.c
View file

@ -765,9 +765,9 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
req->r_oloc.pool = ceph_file_layout_pg_pool(*layout);
snprintf(req->r_oid, sizeof(req->r_oid), "%llx.%08llx",
vino.ino, objnum);
req->r_oid_len = strlen(req->r_oid);
snprintf(req->r_oid.name, sizeof(req->r_oid.name),
"%llx.%08llx", vino.ino, objnum);
req->r_oid.name_len = strlen(req->r_oid.name);
return req;
}
@ -1269,7 +1269,7 @@ static int __map_request(struct ceph_osd_client *osdc,
bool was_paused;
dout("map_request %p tid %lld\n", req, req->r_tid);
err = ceph_calc_ceph_pg(&pgid, req->r_oid, osdc->osdmap,
err = ceph_calc_ceph_pg(&pgid, req->r_oid.name, osdc->osdmap,
req->r_oloc.pool);
if (err) {
list_move(&req->r_req_lru_item, &osdc->req_notarget);
@ -2118,10 +2118,11 @@ void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off,
ceph_encode_32(&p, -1); /* preferred */
/* oid */
ceph_encode_32(&p, req->r_oid_len);
memcpy(p, req->r_oid, req->r_oid_len);
dout("oid '%.*s' len %d\n", req->r_oid_len, req->r_oid, req->r_oid_len);
p += req->r_oid_len;
ceph_encode_32(&p, req->r_oid.name_len);
memcpy(p, req->r_oid.name, req->r_oid.name_len);
dout("oid '%.*s' len %d\n", req->r_oid.name_len,
req->r_oid.name, req->r_oid.name_len);
p += req->r_oid.name_len;
/* ops--can imply data */
ceph_encode_16(&p, (u16)req->r_num_ops);