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Remove global atomic counter for MDS opens, it just slows things down.
[fs/lustre-release.git] / lustre / mds / lproc_mds.c
index e4522fb..b7f519e 100644 (file)
 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
 #include <asm/statfs.h>
 #endif
-#include <linux/lustre_lite.h>
-#include <linux/lustre_fsfilt.h>
+#include <linux/obd.h>
+#include <linux/obd_class.h>
 #include <linux/lprocfs_status.h>
+#include "mds_internal.h"
 
 #ifndef LPROCFS
 struct lprocfs_vars lprocfs_mds_obd_vars[]  = { {0} };
@@ -37,69 +38,159 @@ struct lprocfs_vars lprocfs_mdt_module_vars[] = { {0} };
 
 #else
 
-static inline
-int lprocfs_mds_statfs(void *data, struct statfs *sfs)
+static int lprocfs_mds_rd_mntdev(char *page, char **start, off_t off, int count,
+                                 int *eof, void *data)
 {
-        struct obd_device* dev = (struct obd_device*) data;
-        struct mds_obd *mds;
+        struct obd_device* obd = (struct obd_device *)data;
 
-        LASSERT(dev != NULL);
-        mds = &dev->u.mds;
-        return vfs_statfs(mds->mds_sb, sfs);
-}
+        LASSERT(obd != NULL);
+        LASSERT(obd->u.mds.mds_vfsmnt->mnt_devname);
+        *eof = 1;
 
-DEFINE_LPROCFS_STATFS_FCT(rd_blksize,     lprocfs_mds_statfs);
-DEFINE_LPROCFS_STATFS_FCT(rd_kbytestotal, lprocfs_mds_statfs);
-DEFINE_LPROCFS_STATFS_FCT(rd_kbytesfree,  lprocfs_mds_statfs);
-DEFINE_LPROCFS_STATFS_FCT(rd_filestotal,  lprocfs_mds_statfs);
-DEFINE_LPROCFS_STATFS_FCT(rd_filesfree,   lprocfs_mds_statfs);
-DEFINE_LPROCFS_STATFS_FCT(rd_filegroups,  lprocfs_mds_statfs);
+        return snprintf(page, count, "%s\n",obd->u.mds.mds_vfsmnt->mnt_devname);
+}
 
-int rd_fstype(char *page, char **start, off_t off, int count, int *eof,
-              void *data)
+static int lprocfs_mds_rd_recovery_status(char *page, char **start, off_t off,
+                                          int count, int *eof, void *data)
 {
-        struct obd_device *obd = (struct obd_device *)data;
+        struct obd_device *obd = data;
+        int len = 0, n,
+                connected = obd->obd_connected_clients,
+                max_recoverable = obd->obd_max_recoverable_clients,
+                recoverable = obd->obd_recoverable_clients,
+                completed = max_recoverable - recoverable,
+                queue_len = obd->obd_requests_queued_for_recovery,
+                replayed = obd->obd_replayed_requests;
+        __u64 next_transno = obd->obd_next_recovery_transno;
 
         LASSERT(obd != NULL);
-        LASSERT(obd->obd_fsops != NULL);
-        LASSERT(obd->obd_fsops->fs_type != NULL);
-        return snprintf(page, count, "%s\n", obd->obd_fsops->fs_type);
+        *eof = 1;
+
+        n = snprintf(page, count, "status: ");
+        page += n; len += n; count -= n;
+        if (obd->obd_max_recoverable_clients == 0) {
+                n = snprintf(page, count, "INACTIVE\n");
+                return len + n;
+        }
+
+        if (obd->obd_recoverable_clients == 0) {
+                n = snprintf(page, count, "COMPLETE\n");
+                page += n; len += n; count -= n;
+                n = snprintf(page, count, "recovered_clients: %d\n",
+                             max_recoverable);
+                page += n; len += n; count -= n;
+                n = snprintf(page, count, "last_transno: "LPD64"\n",
+                             next_transno - 1);
+                page += n; len += n; count -= n;
+                n = snprintf(page, count, "replayed_requests: %d\n", replayed);
+                return len + n;
+        }
+
+        /* sampled unlocked, but really... */
+        if (obd->obd_recovering == 0) {
+                n = snprintf(page, count, "ABORTED\n");
+                return len + n;
+        }
+
+        n = snprintf(page, count, "RECOVERING\n");
+        page += n; len += n; count -= n;
+        n = snprintf(page, count, "connected_clients: %d/%d\n",
+                     connected, max_recoverable);
+        page += n; len += n; count -= n;
+        n = snprintf(page, count, "completed_clients: %d/%d\n",
+                     completed, max_recoverable);
+        page += n; len += n; count -= n;
+        n = snprintf(page, count, "replayed_requests: %d/??\n", replayed);
+        page += n; len += n; count -= n;
+        n = snprintf(page, count, "queued_requests: %d\n", queue_len);
+        page += n; len += n; count -= n;
+        n = snprintf(page, count, "next_transno: "LPD64"\n", next_transno);
+        return len + n;
 }
 
+static int lprocfs_mds_wr_evict_client(struct file *file, const char *buffer,
+                                       unsigned long count, void *data)
+{
+        struct obd_device *obd = data;
+        struct obd_export *doomed_exp = NULL;
+        struct obd_uuid doomed;
+        struct list_head *p;
+        char tmpbuf[sizeof(doomed)];
+
+        sscanf(buffer, "%40s", tmpbuf);
+        obd_str2uuid(&doomed, tmpbuf);
+
+        spin_lock(&obd->obd_dev_lock);
+        list_for_each(p, &obd->obd_exports) {
+                doomed_exp = list_entry(p, struct obd_export, exp_obd_chain);
+                if (obd_uuid_equals(&doomed, &doomed_exp->exp_client_uuid)) {
+                        class_export_get(doomed_exp);
+                        break;
+                }
+                doomed_exp = NULL;
+        }
+        spin_unlock(&obd->obd_dev_lock);
+
+        if (doomed_exp == NULL) {
+                CERROR("can't disconnect %s: no export found\n",
+                       doomed.uuid);
+        } else {
+                CERROR("evicting %s at adminstrative request\n",
+                       doomed.uuid);
+                ptlrpc_fail_export(doomed_exp);
+                class_export_put(doomed_exp);
+        }
+        return count;
+}
+
+static int lprocfs_mds_wr_config_update(struct file *file, const char *buffer,
+                                        unsigned long count, void *data)
+{
+        struct obd_device *obd = data;
+        ENTRY;
+
+        RETURN(mds_lov_update_config(obd, 0));
+}
 
 struct lprocfs_vars lprocfs_mds_obd_vars[] = {
-        { "uuid",       lprocfs_rd_uuid, 0, 0 },
-        { "blocksize",  rd_blksize,      0, 0 },
-        { "bytestotal", rd_kbytestotal,  0, 0 },
-        { "kbytesfree", rd_kbytesfree,   0, 0 },
-        { "fstype",     rd_fstype,       0, 0 },
-        { "filestotal", rd_filestotal,   0, 0 },
-        { "filesfree",  rd_filesfree,    0, 0 },
-        { "filegroups", rd_filegroups,   0, 0 },
+        { "uuid",         lprocfs_rd_uuid,        0, 0 },
+        { "blocksize",    lprocfs_rd_blksize,     0, 0 },
+        { "kbytestotal",  lprocfs_rd_kbytestotal, 0, 0 },
+        { "kbytesfree",   lprocfs_rd_kbytesfree,  0, 0 },
+        { "kbytesavail",  lprocfs_rd_kbytesavail, 0, 0 },
+        { "fstype",       lprocfs_rd_fstype,      0, 0 },
+        { "filestotal",   lprocfs_rd_filestotal,  0, 0 },
+        { "filesfree",    lprocfs_rd_filesfree,   0, 0 },
+        { "mntdev",       lprocfs_mds_rd_mntdev,  0, 0 },
+        { "recovery_status", lprocfs_mds_rd_recovery_status, 0, 0 },
+        { "evict_client", 0, lprocfs_mds_wr_evict_client, 0 },
+        { "config_update", 0, lprocfs_mds_wr_config_update, 0 },
+        { "num_exports",  lprocfs_rd_num_exports, 0, 0 },
         { 0 }
 };
 
 struct lprocfs_vars lprocfs_mds_module_vars[] = {
-        { "num_refs",   lprocfs_rd_numrefs, 0, 0 },
+        { "num_refs",     lprocfs_rd_numrefs,     0, 0 },
         { 0 }
 };
 
 struct lprocfs_vars lprocfs_mdt_obd_vars[] = {
-        { "uuid",       lprocfs_rd_uuid, 0, 0 },
+        { "uuid",         lprocfs_rd_uuid,        0, 0 },
         { 0 }
 };
 
 struct lprocfs_vars lprocfs_mdt_module_vars[] = {
-        { "num_refs",   lprocfs_rd_numrefs, 0, 0 },
+        { "num_refs",     lprocfs_rd_numrefs,     0, 0 },
         { 0 }
 };
 
 #endif
+
 struct lprocfs_static_vars lprocfs_array_vars[] = { {lprocfs_mds_module_vars,
                                                      lprocfs_mds_obd_vars},
                                                     {lprocfs_mdt_module_vars,
                                                      lprocfs_mdt_obd_vars}};
 
 LPROCFS_INIT_MULTI_VARS(lprocfs_array_vars,
-                        (sizeof(lprocfs_array_vars)/
-                         sizeof(struct lprocfs_static_vars))) 
+                        (sizeof(lprocfs_array_vars) /
+                         sizeof(struct lprocfs_static_vars)))