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Date: Sat, 4 Jan 2014 15:06:17 +0800
From: Peng Tao <bergwolf@...il.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-kernel@...r.kernel.org,
Artem Blagodarenko <artem_blagodarenko@...atex.com>,
Peng Tao <bergwolf@...il.com>,
Andreas Dilger <andreas.dilger@...el.com>
Subject: [PATCH v2 5/8] staging/lustre/mgs: set_param -P option that sets value permanently
From: Artem Blagodarenko <artem_blagodarenko@...atex.com>
set_param and conf_param have different syntaxes. Also conf_param
has unimplemented paths and no wildcarding support.
This patch adds set_param -P option, that replaces the whole
conf_param "direct" proc access with a simple upcall-type mechanism
from the MGC. Option conf_param is saved now for compatibility.
Part of the original Lustre commit changes server code.
The patch only picks up client side change.
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3155
Lustre-change: http://review.whamcloud.com/6025
Signed-off-by: Artem Blagodarenko <artem_blagodarenko@...atex.com>
Reviewed-by: Andreas Dilger <andreas.dilger@...el.com>
Reviewed-by: Emoly Liu <emoly.liu@...el.com>
Signed-off-by: Peng Tao <bergwolf@...il.com>
Signed-off-by: Andreas Dilger <andreas.dilger@...el.com>
---
drivers/staging/lustre/lustre/include/lustre_cfg.h | 2 +
.../staging/lustre/lustre/include/lustre_disk.h | 2 +
drivers/staging/lustre/lustre/include/obd_class.h | 9 ++-
drivers/staging/lustre/lustre/llite/llite_lib.c | 5 +-
drivers/staging/lustre/lustre/mgc/mgc_request.c | 90 +++++++++++++++++---
.../staging/lustre/lustre/obdclass/obd_config.c | 47 ++++++++++-
6 files changed, 136 insertions(+), 19 deletions(-)
diff --git a/drivers/staging/lustre/lustre/include/lustre_cfg.h b/drivers/staging/lustre/lustre/include/lustre_cfg.h
index e14a5f6..3680668 100644
--- a/drivers/staging/lustre/lustre/include/lustre_cfg.h
+++ b/drivers/staging/lustre/lustre/include/lustre_cfg.h
@@ -88,6 +88,8 @@ enum lcfg_command_type {
LCFG_SET_LDLM_TIMEOUT = 0x00ce030, /**< set ldlm_timeout */
LCFG_PRE_CLEANUP = 0x00cf031, /**< call type-specific pre
* cleanup cleanup */
+ LCFG_SET_PARAM = 0x00ce032, /**< use set_param syntax to set
+ *a proc parameters */
};
struct lustre_cfg_bufs {
diff --git a/drivers/staging/lustre/lustre/include/lustre_disk.h b/drivers/staging/lustre/lustre/include/lustre_disk.h
index 1de9a8b..ac08164 100644
--- a/drivers/staging/lustre/lustre/include/lustre_disk.h
+++ b/drivers/staging/lustre/lustre/include/lustre_disk.h
@@ -99,6 +99,8 @@
#define LDD_F_IR_CAPABLE 0x2000
/** the MGS refused to register the target. */
#define LDD_F_ERROR 0x4000
+/** process at lctl conf_param */
+#define LDD_F_PARAM2 0x8000
/* opc for target register */
#define LDD_F_OPC_REG 0x10000000
diff --git a/drivers/staging/lustre/lustre/include/obd_class.h b/drivers/staging/lustre/lustre/include/obd_class.h
index 983718f..1c2ba19 100644
--- a/drivers/staging/lustre/lustre/include/obd_class.h
+++ b/drivers/staging/lustre/lustre/include/obd_class.h
@@ -175,9 +175,13 @@ enum {
CONFIG_T_CONFIG = 0,
CONFIG_T_SPTLRPC = 1,
CONFIG_T_RECOVER = 2,
- CONFIG_T_MAX = 3
+ CONFIG_T_PARAMS = 3,
+ CONFIG_T_MAX = 4
};
+#define PARAMS_FILENAME "params"
+#define LCTL_UPCALL "lctl"
+
/* list of active configuration logs */
struct config_llog_data {
struct ldlm_res_id cld_resid;
@@ -185,7 +189,8 @@ struct config_llog_data {
struct list_head cld_list_chain;
atomic_t cld_refcount;
struct config_llog_data *cld_sptlrpc;/* depended sptlrpc log */
- struct config_llog_data *cld_recover; /* imperative recover log */
+ struct config_llog_data *cld_params; /* common parameters log */
+ struct config_llog_data *cld_recover;/* imperative recover log */
struct obd_export *cld_mgcexp;
struct mutex cld_lock;
int cld_type;
diff --git a/drivers/staging/lustre/lustre/llite/llite_lib.c b/drivers/staging/lustre/lustre/llite/llite_lib.c
index 70a6808..3e4c292 100644
--- a/drivers/staging/lustre/lustre/llite/llite_lib.c
+++ b/drivers/staging/lustre/lustre/llite/llite_lib.c
@@ -1060,7 +1060,7 @@ out_free:
void ll_put_super(struct super_block *sb)
{
- struct config_llog_instance cfg;
+ struct config_llog_instance cfg, params_cfg;
struct obd_device *obd;
struct lustre_sb_info *lsi = s2lsi(sb);
struct ll_sb_info *sbi = ll_s2sbi(sb);
@@ -1074,6 +1074,9 @@ void ll_put_super(struct super_block *sb)
cfg.cfg_instance = sb;
lustre_end_log(sb, profilenm, &cfg);
+ params_cfg.cfg_instance = sb;
+ lustre_end_log(sb, PARAMS_FILENAME, ¶ms_cfg);
+
if (sbi->ll_md_exp) {
obd = class_exp2obd(sbi->ll_md_exp);
if (obd)
diff --git a/drivers/staging/lustre/lustre/mgc/mgc_request.c b/drivers/staging/lustre/lustre/mgc/mgc_request.c
index b323820..4d2f6d2 100644
--- a/drivers/staging/lustre/lustre/mgc/mgc_request.c
+++ b/drivers/staging/lustre/lustre/mgc/mgc_request.c
@@ -56,7 +56,7 @@ static int mgc_name2resid(char *name, int len, struct ldlm_res_id *res_id,
{
__u64 resname = 0;
- if (len > 8) {
+ if (len > sizeof(resname)) {
CERROR("name too long: %s\n", name);
return -EINVAL;
}
@@ -76,6 +76,7 @@ static int mgc_name2resid(char *name, int len, struct ldlm_res_id *res_id,
resname = 0;
break;
case CONFIG_T_RECOVER:
+ case CONFIG_T_PARAMS:
resname = type;
break;
default:
@@ -101,10 +102,13 @@ int mgc_logname2resid(char *logname, struct ldlm_res_id *res_id, int type)
int len;
/* logname consists of "fsname-nodetype".
- * e.g. "lustre-MDT0001", "SUN-000-client" */
+ * e.g. "lustre-MDT0001", "SUN-000-client"
+ * there is an exception: llog "params" */
name_end = strrchr(logname, '-');
- LASSERT(name_end);
- len = name_end - logname;
+ if (!name_end)
+ len = strlen(logname);
+ else
+ len = name_end - logname;
return mgc_name2resid(logname, len, res_id, type);
}
@@ -140,6 +144,8 @@ static void config_log_put(struct config_llog_data *cld)
config_log_put(cld->cld_recover);
if (cld->cld_sptlrpc)
config_log_put(cld->cld_sptlrpc);
+ if (cld->cld_params)
+ config_log_put(cld->cld_params);
if (cld_is_sptlrpc(cld))
sptlrpc_conf_log_stop(cld->cld_logname);
@@ -271,6 +277,19 @@ static struct config_llog_data *config_recover_log_add(struct obd_device *obd,
return cld;
}
+static struct config_llog_data *config_params_log_add(struct obd_device *obd,
+ struct config_llog_instance *cfg, struct super_block *sb)
+{
+ struct config_llog_instance lcfg = *cfg;
+ struct config_llog_data *cld;
+
+ lcfg.cfg_instance = sb;
+
+ cld = do_config_log_add(obd, PARAMS_FILENAME, CONFIG_T_PARAMS,
+ &lcfg, sb);
+
+ return cld;
+}
/** Add this log to the list of active logs watched by an MGC.
* Active means we're watching for updates.
@@ -284,8 +303,10 @@ static int config_log_add(struct obd_device *obd, char *logname,
struct lustre_sb_info *lsi = s2lsi(sb);
struct config_llog_data *cld;
struct config_llog_data *sptlrpc_cld;
- char seclogname[32];
- char *ptr;
+ struct config_llog_data *params_cld;
+ char seclogname[32];
+ char *ptr;
+ int rc;
CDEBUG(D_MGC, "adding config log %s:%p\n", logname, cfg->cfg_instance);
@@ -308,32 +329,49 @@ static int config_log_add(struct obd_device *obd, char *logname,
CONFIG_T_SPTLRPC, NULL, NULL);
if (IS_ERR(sptlrpc_cld)) {
CERROR("can't create sptlrpc log: %s\n", seclogname);
- return PTR_ERR(sptlrpc_cld);
+ GOTO(out_err, rc = PTR_ERR(sptlrpc_cld));
}
}
+ params_cld = config_params_log_add(obd, cfg, sb);
+ if (IS_ERR(params_cld)) {
+ rc = PTR_ERR(params_cld);
+ CERROR("%s: can't create params log: rc = %d\n",
+ obd->obd_name, rc);
+ GOTO(out_err1, rc);
+ }
cld = do_config_log_add(obd, logname, CONFIG_T_CONFIG, cfg, sb);
if (IS_ERR(cld)) {
CERROR("can't create log: %s\n", logname);
- config_log_put(sptlrpc_cld);
- return PTR_ERR(cld);
+ GOTO(out_err2, rc = PTR_ERR(cld));
}
cld->cld_sptlrpc = sptlrpc_cld;
+ cld->cld_params = params_cld;
LASSERT(lsi->lsi_lmd);
if (!(lsi->lsi_lmd->lmd_flags & LMD_FLG_NOIR)) {
struct config_llog_data *recover_cld;
*strrchr(seclogname, '-') = 0;
recover_cld = config_recover_log_add(obd, seclogname, cfg, sb);
- if (IS_ERR(recover_cld)) {
- config_log_put(cld);
- return PTR_ERR(recover_cld);
- }
+ if (IS_ERR(recover_cld))
+ GOTO(out_err3, rc = PTR_ERR(recover_cld));
cld->cld_recover = recover_cld;
}
return 0;
+
+out_err3:
+ config_log_put(cld);
+
+out_err2:
+ config_log_put(params_cld);
+
+out_err1:
+ config_log_put(sptlrpc_cld);
+
+out_err:
+ return rc;
}
DEFINE_MUTEX(llog_process_lock);
@@ -344,6 +382,7 @@ static int config_log_end(char *logname, struct config_llog_instance *cfg)
{
struct config_llog_data *cld;
struct config_llog_data *cld_sptlrpc = NULL;
+ struct config_llog_data *cld_params = NULL;
struct config_llog_data *cld_recover = NULL;
int rc = 0;
@@ -382,11 +421,20 @@ static int config_log_end(char *logname, struct config_llog_instance *cfg)
spin_lock(&config_list_lock);
cld_sptlrpc = cld->cld_sptlrpc;
cld->cld_sptlrpc = NULL;
+ cld_params = cld->cld_params;
+ cld->cld_params = NULL;
spin_unlock(&config_list_lock);
if (cld_sptlrpc)
config_log_put(cld_sptlrpc);
+ if (cld_params) {
+ mutex_lock(&cld_params->cld_lock);
+ cld_params->cld_stopping = 1;
+ mutex_unlock(&cld_params->cld_lock);
+ config_log_put(cld_params);
+ }
+
/* drop the ref from the find */
config_log_put(cld);
/* drop the start ref */
@@ -1664,7 +1712,7 @@ static int mgc_process_cfg_log(struct obd_device *mgc,
LCONSOLE_ERROR_MSG(0x13a,
"Failed to get MGS log %s and no local copy.\n",
cld->cld_logname);
- GOTO(out_pop, rc = -ENOTCONN);
+ GOTO(out_pop, rc = -ENOENT);
}
CDEBUG(D_MGC,
"Failed to get MGS log %s, using local copy for now, will try to update later.\n",
@@ -1863,6 +1911,20 @@ static int mgc_process_config(struct obd_device *obd, obd_count len, void *buf)
if (rc)
CERROR("Cannot process recover llog %d\n", rc);
}
+
+ if (rc == 0 && cld->cld_params != NULL) {
+ rc = mgc_process_log(obd, cld->cld_params);
+ if (rc == -ENOENT) {
+ CDEBUG(D_MGC,
+ "There is no params config file yet\n");
+ rc = 0;
+ }
+ /* params log is optional */
+ if (rc)
+ CERROR(
+ "%s: can't process params llog: rc = %d\n",
+ obd->obd_name, rc);
+ }
config_log_put(cld);
break;
diff --git a/drivers/staging/lustre/lustre/obdclass/obd_config.c b/drivers/staging/lustre/lustre/obdclass/obd_config.c
index 362ae54..27f56c0 100644
--- a/drivers/staging/lustre/lustre/obdclass/obd_config.c
+++ b/drivers/staging/lustre/lustre/obdclass/obd_config.c
@@ -1027,6 +1027,46 @@ struct lustre_cfg *lustre_cfg_rename(struct lustre_cfg *cfg,
}
EXPORT_SYMBOL(lustre_cfg_rename);
+static int process_param2_config(struct lustre_cfg *lcfg)
+{
+ char *param = lustre_cfg_string(lcfg, 1);
+ char *upcall = lustre_cfg_string(lcfg, 2);
+ char *argv[] = {
+ [0] = "/usr/sbin/lctl",
+ [1] = "set_param",
+ [2] = param,
+ [3] = NULL
+ };
+ struct timeval start;
+ struct timeval end;
+ int rc;
+
+
+ /* Add upcall processing here. Now only lctl is supported */
+ if (strcmp(upcall, LCTL_UPCALL) != 0) {
+ CERROR("Unsupported upcall %s\n", upcall);
+ return -EINVAL;
+ }
+
+ do_gettimeofday(&start);
+ rc = USERMODEHELPER(argv[0], argv, NULL);
+ do_gettimeofday(&end);
+
+ if (rc < 0) {
+ CERROR(
+ "lctl: error invoking upcall %s %s %s: rc = %d; time %ldus\n",
+ argv[0], argv[1], argv[2], rc,
+ cfs_timeval_sub(&end, &start, NULL));
+ } else {
+ CDEBUG(D_HA, "lctl: invoked upcall %s %s %s, time %ldus\n",
+ argv[0], argv[1], argv[2],
+ cfs_timeval_sub(&end, &start, NULL));
+ rc = 0;
+ }
+
+ return rc;
+}
+
void lustre_register_quota_process_config(int (*qpc)(struct lustre_cfg *lcfg))
{
quota_process_config = qpc;
@@ -1142,11 +1182,14 @@ int class_process_config(struct lustre_cfg *lcfg)
err = (*quota_process_config)(lcfg);
GOTO(out, err);
}
- /* Fall through */
+
break;
}
+ case LCFG_SET_PARAM: {
+ err = process_param2_config(lcfg);
+ GOTO(out, 0);
+ }
}
-
/* Commands that require a device */
obd = class_name2obd(lustre_cfg_string(lcfg, 0));
if (obd == NULL) {
--
1.7.7.6
--
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