#include <linux/obd_cache.h>
#include <linux/obd_lmv.h>
-static int cobd_attach(struct obd_device *obd, obd_count len, void *buf)
+static int cobd_attach(struct obd_device *obd,
+ obd_count len, void *buf)
{
struct lprocfs_static_vars lvars;
return lprocfs_obd_detach(obd);
}
-static int connect_to_obd(char *name, struct lustre_handle *conn)
-{
- struct obd_uuid obd_uuid;
- struct obd_device *obd;
- int rc = 0;
- ENTRY;
-
- obd = class_name2obd(name);
- if (obd == NULL) {
- CERROR("COBD: unable to find a client for obd: %s\n",
- name);
- RETURN(-EINVAL);
- }
- rc = obd_connect(conn, obd, &obd_uuid, 0);
- RETURN(rc);
-}
-
static int cobd_setup(struct obd_device *obd, obd_count len, void *buf)
{
struct lustre_cfg *lcfg = (struct lustre_cfg *)buf;
struct cache_obd *cobd = &obd->u.cobd;
- struct lustre_handle conn = { 0 };
struct obd_device *master;
- int rc;
+ int rc = 0;
ENTRY;
if (lcfg->lcfg_inllen1 == 0 || lcfg->lcfg_inlbuf1 == NULL) {
RETURN(-EINVAL);
}
- cobd->cache_on = 1;
sema_init(&cobd->sem, 1);
- OBD_ALLOC(cobd->master_name, strlen(lcfg->lcfg_inlbuf1) + 1);
+ OBD_ALLOC(cobd->master_name, lcfg->lcfg_inllen1);
if (!cobd->master_name)
- GOTO(put_names, rc = -ENOMEM);
+ RETURN(-ENOMEM);
memcpy(cobd->master_name, lcfg->lcfg_inlbuf1,
- strlen(lcfg->lcfg_inlbuf1));
+ lcfg->lcfg_inllen1);
- OBD_ALLOC(cobd->cache_name, strlen(lcfg->lcfg_inlbuf2) + 1);
+ OBD_ALLOC(cobd->cache_name, lcfg->lcfg_inllen2);
if (!cobd->cache_name)
GOTO(put_names, rc = -ENOMEM);
memcpy(cobd->cache_name, lcfg->lcfg_inlbuf2,
- strlen(lcfg->lcfg_inlbuf2));
+ lcfg->lcfg_inllen2);
- rc = connect_to_obd(cobd->cache_name, &conn);
- if (rc)
- GOTO(put_names, rc);
- cobd->cache_exp = class_conn2export(&conn);
-
- RETURN(0);
+ EXIT;
put_names:
if (rc) {
- if (cobd->cache_name)
- OBD_FREE(cobd->cache_name,
- strlen(cobd->cache_name) + 1);
- if (cobd->master_name)
- OBD_FREE(cobd->master_name,
- strlen(cobd->master_name) + 1);
+ OBD_FREE(cobd->master_name, lcfg->lcfg_inllen1);
+ cobd->master_name = NULL;
}
return rc;
}
static int cobd_cleanup(struct obd_device *obd, int flags)
{
struct cache_obd *cobd = &obd->u.cobd;
- int rc;
ENTRY;
- if (cobd->cache_on) {
- rc = obd_disconnect(cobd->cache_exp, flags);
- if (rc) {
- CERROR("error disconnecting cache, err %d\n",
- rc);
- }
- } else {
- rc = obd_disconnect(cobd->master_exp, flags);
- if (rc) {
- CERROR("error disconnecting master, err %d\n",
- rc);
- }
- }
+ if (!list_empty(&obd->obd_exports))
+ RETURN(-EBUSY);
if (cobd->cache_name)
OBD_FREE(cobd->cache_name,
OBD_FREE(cobd->master_name,
strlen(cobd->master_name) + 1);
- RETURN(rc);
+ RETURN(0);
}
-struct obd_export *cobd_get_exp(struct obd_device *obd)
+static inline struct obd_export *
+cobd_get_exp(struct obd_device *obd)
{
struct cache_obd *cobd = &obd->u.cobd;
-
if (cobd->cache_on)
return cobd->cache_exp;
-
return cobd->master_exp;
}
+static int client_obd_connect(struct obd_device *obd, char *name,
+ struct lustre_handle *conn,
+ struct obd_connect_data *data,
+ unsigned long flags)
+{
+ struct obd_device *cli_obd;
+ int rc = 0;
+ ENTRY;
+
+ LASSERT(obd);
+ LASSERT(name);
+ LASSERT(conn);
+
+ cli_obd = class_name2obd(name);
+ if (cli_obd == NULL) {
+ CERROR("%s: unable to find a client for obd: %s\n",
+ obd->obd_name, name);
+ RETURN(-EINVAL);
+ }
+ rc = obd_connect(conn, cli_obd, &obd->obd_uuid, data, flags);
+ if (rc) {
+ CERROR("error connecting to %s, err %d\n",
+ name, rc);
+ }
+ RETURN(rc);
+}
+
+static int client_obd_disconnect(struct obd_device *obd,
+ struct obd_export *exp,
+ unsigned long flags)
+{
+ struct obd_device *cli_obd;
+ int rc = 0;
+ ENTRY;
+
+ cli_obd = class_exp2obd(exp);
+ cli_obd->obd_no_recov = obd->obd_no_recov;
+
+ rc = obd_disconnect(exp, flags);
+ if (rc) {
+ CERROR("error disconnecting from %s, err %d\n",
+ cli_obd->obd_name, rc);
+ class_export_put(exp);
+ }
+ RETURN(rc);
+}
+
static int
cobd_connect(struct lustre_handle *conn, struct obd_device *obd,
- struct obd_uuid *cluuid, unsigned long flags)
+ struct obd_uuid *cluuid, struct obd_connect_data *data,
+ unsigned long flags)
{
- return class_connect(conn, obd, cluuid);
+ struct lustre_handle cache_conn = { 0 };
+ struct cache_obd *cobd = &obd->u.cobd;
+ struct obd_export *exp;
+ int rc = 0;
+ ENTRY;
+
+ /* connecting class */
+ rc = class_connect(conn, obd, cluuid);
+ if (rc)
+ RETURN(rc);
+ exp = class_conn2export(conn);
+
+ /* connecting cache */
+ rc = client_obd_connect(obd, cobd->cache_name,
+ &cache_conn, data, flags);
+ if (rc)
+ GOTO(err_discon, rc);
+ cobd->cache_exp = class_conn2export(&cache_conn);
+ cobd->cache_on = 1;
+
+ EXIT;
+err_discon:
+ if (rc)
+ class_disconnect(exp, 0);
+ else
+ class_export_put(exp);
+ return rc;
}
-static int cobd_disconnect(struct obd_export *exp, unsigned long flags)
+static int
+cobd_disconnect(struct obd_export *exp, unsigned long flags)
{
- return class_disconnect(exp, flags);
+ struct obd_device *obd;
+ struct cache_obd *cobd;
+ int rc = 0;
+ ENTRY;
+
+ LASSERT(exp != NULL);
+ obd = class_exp2obd(exp);
+ if (obd == NULL) {
+ CDEBUG(D_IOCTL, "invalid client cookie "LPX64"\n",
+ exp->exp_handle.h_cookie);
+ RETURN(-EINVAL);
+ }
+
+ cobd = &obd->u.cobd;
+
+ if (cobd->cache_on) {
+ rc = client_obd_disconnect(obd, cobd->cache_exp,
+ flags);
+ cobd->cache_exp = NULL;
+ } else {
+ rc = client_obd_disconnect(obd, cobd->master_exp,
+ flags);
+ cobd->master_exp = NULL;
+ }
+
+ rc = class_disconnect(exp, flags);
+ RETURN(rc);
}
static int cobd_get_info(struct obd_export *exp, obd_count keylen,
}
static int cobd_getattr(struct obd_export *exp, struct obdo *oa,
- struct lov_stripe_md *lsm)
+ struct lov_stripe_md *ea)
{
struct obd_device *obd = class_exp2obd(exp);
struct obd_export *cobd_exp;
return -EINVAL;
}
cobd_exp = cobd_get_exp(obd);
- return obd_getattr(cobd_exp, oa, lsm);
+ return obd_getattr(cobd_exp, oa, ea);
}
static int cobd_getattr_async(struct obd_export *exp,
static int cobd_flush(struct obd_device *obd)
{
- /* flush the filesystem from the cache to the real device. */
return 0;
}
switch (cmd) {
case OBD_IOC_COBD_CON:
if (!cobd->cache_on) {
- struct lustre_handle conn = {0,};
-
- rc = obd_disconnect(cobd->master_exp, 0);
- if (rc) {
- CERROR("error disconnecting master, err %d\n",
- rc);
- }
- rc = connect_to_obd(cobd->cache_name, &conn);
+ struct lustre_handle conn = {0};
+
+ rc = client_obd_disconnect(obd, cobd->master_exp, 0);
+ rc = client_obd_connect(obd, cobd->cache_name, &conn,
+ NULL, 0);
if (rc)
GOTO(out, rc);
cobd->cache_exp = class_conn2export(&conn);
cache = class_exp2obd(cobd->cache_exp);
easize = cache->u.cli.cl_max_mds_easize;
cooksize = cache->u.cli.cl_max_mds_cookiesize;
-
- rc = obd_disconnect(cobd->cache_exp, 0);
- if (rc) {
- CERROR("error disconnecting master, err %d\n",
- rc);
- }
-
- /* should we read from master_dev? */
- rc = connect_to_obd(cobd->master_name, &conn);
+
+ rc = client_obd_disconnect(obd, cobd->cache_exp, 0);
+ rc = client_obd_connect(obd, cobd->master_name, &conn,
+ NULL, 0);
if (rc)
GOTO(out, rc);
cobd->master_exp = class_conn2export(&conn);
- master = class_exp2obd(cobd->master_exp);
+ master = class_exp2obd(cobd->master_exp);
master->u.cli.cl_max_mds_easize = easize;
master->u.cli.cl_max_mds_cookiesize = cooksize;
cobd->cache_on = 0;
cobd->cache_on = 0;
cobd_flush(obd);
} else {
- CERROR("%s: cache is turned off\n",
- obd->obd_name);
+ CERROR("%s: cache is turned off\n", obd->obd_name);
}
break;
default:
}
static int cobd_md_getattr(struct obd_export *exp, struct lustre_id *id,
- __u64 valid, unsigned int ea_size,
- struct ptlrpc_request **request)
+ __u64 valid, const char *ea_name, int ea_namelen,
+ unsigned int ea_size, struct ptlrpc_request **request)
{
struct obd_device *obd = class_exp2obd(exp);
struct obd_export *cobd_exp;
return -EINVAL;
}
cobd_exp = cobd_get_exp(obd);
- return md_getattr(cobd_exp, id, valid, ea_size, request);
+ return md_getattr(cobd_exp, id, valid, NULL, 0, ea_size, request);
}
static int cobd_md_req2lustre_md (struct obd_export *mdc_exp,
}
static struct obd_device *cobd_md_get_real_obd(struct obd_export *exp,
- char *name, int len)
+ struct lustre_id *id)
{
struct obd_device *obd = class_exp2obd(exp);
struct obd_export *cobd_exp;
return NULL;
}
cobd_exp = cobd_get_exp(obd);
- return md_get_real_obd(cobd_exp, name, len);
+ return md_get_real_obd(cobd_exp, id);
}
static int cobd_md_change_cbdata_name(struct obd_export *exp,
git://git.whamcloud.com / fs / lustre-release.git / blobdiff