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libceph: introduce and start using oid abstraction

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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 <ilya.dryomov@inktank.com>
Reviewed-by: Sage Weil <sage@inktank.com>
This commit is contained in:
Ilya Dryomov
2014-01-27 17:40:18 +02:00
parent 2d0ebc5d59
commit 4295f2217a
5 changed files with 50 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
net/ceph/osd_client.c
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@@ -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);