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Lproc-snmp code drop
[fs/lustre-release.git] / lustre / llite / super.c
index 55c7d71..40ae623 100644 (file)
@@ -20,6 +20,8 @@
 #include <linux/lustre_dlm.h>
 #include <linux/init.h>
 #include <linux/fs.h>
+#include <linux/lprocfs_status.h>
+
 
 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
 kmem_cache_t *ll_file_data_slab;
@@ -31,6 +33,15 @@ extern int ll_recover(struct recovd_data *, int);
 extern int ll_commitcbd_setup(struct ll_sb_info *);
 extern int ll_commitcbd_cleanup(struct ll_sb_info *);
 
+extern int rd_dev_uuid(char* page, char **start, off_t off,
+                           int count, int *eof, void *data);
+
+extern int rd_dev_name(char* page, char **start, off_t off,
+                    int count, int *eof, void *data);
+
+
+extern lprocfs_vars_t status_var_nm_1[];
+
 static char *ll_read_opt(const char *opt, char *data)
 {
         char *value;
@@ -104,13 +115,19 @@ static struct super_block * ll_read_super(struct super_block *sb,
         int err;
         struct ll_fid rootfid;
         struct obd_statfs osfs;
-        __u64 last_committed;
-        __u64 last_xid;
         struct ptlrpc_request *request = NULL;
         struct ptlrpc_connection *mdc_conn;
         struct ll_read_inode2_cookie lic;
         class_uuid_t uuid;
 
+        
+        /* Lprocfs variables */
+        char mnt_name[100];
+        char uuid_name[100];
+        lprocfs_vars_t d_vars[3];
+        
+
+
         ENTRY;
         MOD_INC_USE_COUNT;
 
@@ -169,21 +186,16 @@ static struct super_block * ll_read_super(struct super_block *sb,
                 GOTO(out_mdc, sb = NULL);
         }
 
-        /* XXX: need to store the last_* values somewhere */
-        err = mdc_getstatus(&sbi->ll_mdc_conn, &rootfid, &last_committed,
-                            &last_xid, &request);
-        ptlrpc_req_finished(request);
+        err = mdc_getstatus(&sbi->ll_mdc_conn, &rootfid);
         if (err) {
                 CERROR("cannot mds_connect: rc = %d\n", err);
                 GOTO(out_mdc, sb = NULL);
         }
-        CDEBUG(D_SUPER, "rootfid %Ld\n", (unsigned long long)rootfid.id);
+        CDEBUG(D_SUPER, "rootfid "LPU64"\n", rootfid.id);
         sbi->ll_rootino = rootfid.id;
 
         memset(&osfs, 0, sizeof(osfs));
-        request = NULL;
-        err = mdc_statfs(&sbi->ll_mdc_conn, &osfs, &request);
-        ptlrpc_req_finished(request);
+        err = obd_statfs(&sbi->ll_mdc_conn, &osfs);
         sb->s_blocksize = osfs.os_bsize;
         sb->s_blocksize_bits = log2(osfs.os_bsize);
         sb->s_magic = LL_SUPER_MAGIC;
@@ -192,7 +204,6 @@ static struct super_block * ll_read_super(struct super_block *sb,
         sb->s_op = &ll_super_operations;
 
         /* make root inode */
-        request = NULL;
         err = mdc_getattr(&sbi->ll_mdc_conn, sbi->ll_rootino, S_IFDIR,
                           OBD_MD_FLNOTOBD|OBD_MD_FLBLOCKS, 0, &request);
         if (err) {
@@ -224,7 +235,67 @@ static struct super_block * ll_read_super(struct super_block *sb,
         }
 
         ptlrpc_req_finished(request);
+        request = NULL;
+
+        
+        /* Register this mount instance with LProcFS */
+        
+        snprintf(mnt_name, 100, "mount_%s", sbi->ll_sb_uuid);
+        sbi->ll_mnt_root=lprocfs_reg_mnt(mnt_name);
+        if(!sbi->ll_mnt_root)
+                goto out_dev;
+
+        /* Add the static configuration info */
+        lprocfs_add_vars(sbi->ll_mnt_root, (lprocfs_vars_t*)status_var_nm_1,
+                         (void*)sb);
 
+         /* Add the dynamic configuration stuff */
+        /* MDC */
+        obd = class_uuid2obd(mdc);
+        
+        /* Reuse mnt_name */
+        
+        sprintf(mnt_name, "status/%s/common_name", obd->obd_type->typ_name);
+
+        memset(d_vars, 0, sizeof(d_vars));
+        d_vars[0].read_fptr=rd_dev_name;
+        d_vars[0].write_fptr=0;
+        d_vars[0].name=(char*)mnt_name;
+         
+        memset(uuid_name, '\0', strlen(uuid_name));
+        sprintf(uuid_name, "status/%s/uuid", obd->obd_type->typ_name);
+        d_vars[1].read_fptr=rd_dev_uuid;
+        d_vars[1].write_fptr=0;
+        d_vars[1].name=(char*)uuid_name;
+        
+        err=lprocfs_add_vars(sbi->ll_mnt_root, (lprocfs_vars_t*)d_vars, 
+                             (void*)obd);
+        if (err) {
+                CDEBUG(D_OTHER, "Unable to add fs proc dynamic variables");
+        }
+
+        /* OSC or LOV*/
+        obd = class_uuid2obd(osc);
+        /* Reuse mnt_name */
+        memset(mnt_name, '\0', strlen(mnt_name));
+        sprintf(mnt_name, "status/%s/common_name", obd->obd_type->typ_name);
+
+        memset(d_vars, 0, sizeof(d_vars));
+        d_vars[0].read_fptr=rd_dev_name;
+        d_vars[0].write_fptr=0;
+        d_vars[0].name=(char*)mnt_name;
+         
+        memset(uuid_name, '\0', strlen(uuid_name));
+        sprintf(uuid_name, "status/%s/uuid", obd->obd_type->typ_name);
+        d_vars[1].read_fptr=rd_dev_uuid;
+        d_vars[1].write_fptr=0;
+        d_vars[1].name=(char*)uuid_name;
+        
+        err=lprocfs_add_vars(sbi->ll_mnt_root, (lprocfs_vars_t*)d_vars, 
+                             (void*)obd);        
+        if (err) {
+                CDEBUG(D_OTHER, "Unable to add fs proc dynamic variables");
+        }
 out_dev:
         if (mdc)
                 OBD_FREE(mdc, strlen(mdc) + 1);
@@ -250,11 +321,22 @@ out_free:
 static void ll_put_super(struct super_block *sb)
 {
         struct ll_sb_info *sbi = ll_s2sbi(sb);
-
+        struct ll_fid rootfid;
         ENTRY;
+
         list_del(&sbi->ll_conn_chain);
         ll_commitcbd_cleanup(sbi);
         obd_disconnect(&sbi->ll_osc_conn);
+
+        /* NULL request to force sync on the MDS, and get the last_committed
+         * value to flush remaining RPCs from the sending queue on client.
+         *
+         * XXX This should be an mdc_sync() call to sync the whole MDS fs,
+         *     which we can call for other reasons as well.
+         */
+        mdc_getstatus(&sbi->ll_mdc_conn, &rootfid);
+
+        lprocfs_dereg_mnt(sbi->ll_mnt_root);
         obd_disconnect(&sbi->ll_mdc_conn);
         OBD_FREE(sbi, sizeof(*sbi));
 
@@ -392,16 +474,14 @@ int ll_setattr(struct dentry *de, struct iattr *attr)
 
 static int ll_statfs(struct super_block *sb, struct statfs *sfs)
 {
-        struct ptlrpc_request *request = NULL;
         struct ll_sb_info *sbi = ll_s2sbi(sb);
         struct obd_statfs osfs;
         int rc;
         ENTRY;
 
         memset(sfs, 0, sizeof(*sfs));
-        rc = mdc_statfs(&sbi->ll_mdc_conn, &osfs, &request);
+        rc = obd_statfs(&sbi->ll_mdc_conn, &osfs);
         statfs_unpack(sfs, &osfs);
-        ptlrpc_req_finished(request);
         if (rc)
                 CERROR("mdc_statfs fails: rc = %d\n", rc);
         else