X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Flmv%2Flproc_lmv.c;h=a033d07b256e9f41e74115ac5578f61c3235939c;hb=c6869c3d301e03ae02e87b40c5cfe2987517c0c4;hp=8b0172754deb7b587a242f2d1af1136beffa3d05;hpb=f2b264f2049554d69c1cc6f0c0ebc5d3e196a068;p=fs%2Flustre-release.git

diff --git a/lustre/lmv/lproc_lmv.c b/lustre/lmv/lproc_lmv.c
index 8b01727..a033d07 100644
--- a/lustre/lmv/lproc_lmv.c
+++ b/lustre/lmv/lproc_lmv.c
@@ -1,22 +1,35 @@
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
  *
- * Copyright (C) 2002, 2003 Cluster File Systems, Inc.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
- *   This file is part of Lustre, http://www.lustre.org.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
  *
- *   Lustre is free software; you can redistribute it and/or
- *   modify it under the terms of version 2 of the GNU General Public
- *   License as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
  *
- *   Lustre is distributed in the hope that it will be useful,
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *   GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  *
- *   You should have received a copy of the GNU General Public License
- *   along with Lustre; if not, write to the Free Software
- *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
  */
 
 #define DEBUG_SUBSYSTEM S_CLASS
@@ -34,8 +47,8 @@ static struct lprocfs_vars lprocfs_obd_vars[] = { {0} };
 static int lmv_rd_numobd(char *page, char **start, off_t off, int count,
                          int *eof, void *data)
 {
-        struct obd_device *dev = (struct obd_device*)data;
-        struct lmv_desc *desc;
+        struct obd_device       *dev = (struct obd_device*)data;
+        struct lmv_desc         *desc;
 
         LASSERT(dev != NULL);
         desc = &dev->u.lmv.desc;
@@ -44,11 +57,83 @@ static int lmv_rd_numobd(char *page, char **start, off_t off, int count,
 
 }
 
+static const char *placement_name[] = {
+        [PLACEMENT_CHAR_POLICY] = "CHAR",
+        [PLACEMENT_NID_POLICY]  = "NID"
+};
+
+static placement_policy_t placement_name2policy(char *name, int len)
+{
+        int                     i;
+
+        for (i = 0; i < PLACEMENT_MAX_POLICY; i++) {
+                if (!strncmp(placement_name[i], name, len))
+                        return i;
+        }
+        return PLACEMENT_INVAL_POLICY;
+}
+
+static const char *placement_policy2name(placement_policy_t placement)
+{
+        LASSERT(placement < PLACEMENT_MAX_POLICY);
+        return placement_name[placement];
+}
+
+static int lmv_rd_placement(char *page, char **start, off_t off, int count,
+                            int *eof, void *data)
+{
+        struct obd_device       *dev = (struct obd_device*)data;
+        struct lmv_obd          *lmv;
+
+        LASSERT(dev != NULL);
+        lmv = &dev->u.lmv;
+        *eof = 1;
+        return snprintf(page, count, "%s\n",
+                        placement_policy2name(lmv->lmv_placement));
+
+}
+
+#define MAX_POLICY_STRING_SIZE 64
+
+static int lmv_wr_placement(struct file *file, const char *buffer,
+                            unsigned long count, void *data)
+{
+        struct obd_device       *dev = (struct obd_device *)data;
+        char                     dummy[MAX_POLICY_STRING_SIZE + 1];
+        int                      len = count;
+        placement_policy_t       policy;
+        struct lmv_obd          *lmv;
+
+        if (cfs_copy_from_user(dummy, buffer, MAX_POLICY_STRING_SIZE))
+                return -EFAULT;
+
+        LASSERT(dev != NULL);
+        lmv = &dev->u.lmv;
+
+        if (len > MAX_POLICY_STRING_SIZE)
+                len = MAX_POLICY_STRING_SIZE;
+
+        if (dummy[len - 1] == '\n')
+                len--;
+        dummy[len] = '\0';
+
+        policy = placement_name2policy(dummy, len);
+        if (policy != PLACEMENT_INVAL_POLICY) {
+                cfs_spin_lock(&lmv->lmv_lock);
+                lmv->lmv_placement = policy;
+                cfs_spin_unlock(&lmv->lmv_lock);
+        } else {
+                CERROR("Invalid placement policy \"%s\"!\n", dummy);
+                return -EINVAL;
+        }
+        return count;
+}
+
 static int lmv_rd_activeobd(char *page, char **start, off_t off, int count,
                             int *eof, void *data)
 {
-        struct obd_device* dev = (struct obd_device*)data;
-        struct lmv_desc *desc;
+        struct obd_device       *dev = (struct obd_device*)data;
+        struct lmv_desc         *desc;
 
         LASSERT(dev != NULL);
         desc = &dev->u.lmv.desc;
@@ -59,8 +144,8 @@ static int lmv_rd_activeobd(char *page, char **start, off_t off, int count,
 static int lmv_rd_desc_uuid(char *page, char **start, off_t off, int count,
                             int *eof, void *data)
 {
-        struct obd_device *dev = (struct obd_device*) data;
-        struct lmv_obd *lmv;
+        struct obd_device       *dev = (struct obd_device*) data;
+        struct lmv_obd          *lmv;
 
         LASSERT(dev != NULL);
         lmv = &dev->u.lmv;
@@ -70,9 +155,8 @@ static int lmv_rd_desc_uuid(char *page, char **start, off_t off, int count,
 
 static void *lmv_tgt_seq_start(struct seq_file *p, loff_t *pos)
 {
-        struct obd_device *dev = p->private;
-        struct lmv_obd *lmv = &dev->u.lmv;
-
+        struct obd_device       *dev = p->private;
+        struct lmv_obd          *lmv = &dev->u.lmv;
         return (*pos >= lmv->desc.ld_tgt_count) ? NULL : &(lmv->tgts[*pos]);
 
 }
@@ -84,37 +168,37 @@ static void lmv_tgt_seq_stop(struct seq_file *p, void *v)
 
 static void *lmv_tgt_seq_next(struct seq_file *p, void *v, loff_t *pos)
 {
-        struct obd_device *dev = p->private;
-        struct lmv_obd *lmv = &dev->u.lmv;
-
+        struct obd_device       *dev = p->private;
+        struct lmv_obd          *lmv = &dev->u.lmv;
         ++*pos;
         return (*pos >=lmv->desc.ld_tgt_count) ? NULL : &(lmv->tgts[*pos]);
 }
 
 static int lmv_tgt_seq_show(struct seq_file *p, void *v)
 {
-        struct lmv_tgt_desc *tgt = v;
-        struct obd_device *dev = p->private;
-        struct lmv_obd *lmv = &dev->u.lmv;
-        int idx = tgt - &(lmv->tgts[0]);
-        
+        struct lmv_tgt_desc     *tgt = v;
+        struct obd_device       *dev = p->private;
+        struct lmv_obd          *lmv = &dev->u.lmv;
+        int                      idx = tgt - &(lmv->tgts[0]);
+
         return seq_printf(p, "%d: %s %sACTIVE\n", idx, tgt->ltd_uuid.uuid,
                           tgt->ltd_active ? "" : "IN");
 }
 
 struct seq_operations lmv_tgt_sops = {
-        .start = lmv_tgt_seq_start,
-        .stop = lmv_tgt_seq_stop,
-        .next = lmv_tgt_seq_next,
-        .show = lmv_tgt_seq_show,
+        .start                 = lmv_tgt_seq_start,
+        .stop                  = lmv_tgt_seq_stop,
+        .next                  = lmv_tgt_seq_next,
+        .show                  = lmv_tgt_seq_show,
 };
 
 static int lmv_target_seq_open(struct inode *inode, struct file *file)
 {
-        struct proc_dir_entry *dp = PDE(inode);
-        struct seq_file *seq;
-        int rc = seq_open(file, &lmv_tgt_sops);
+        struct proc_dir_entry   *dp = PDE(inode);
+        struct seq_file         *seq;
+        int                     rc;
 
+        rc = seq_open(file, &lmv_tgt_sops);
         if (rc)
                 return rc;
 
@@ -125,29 +209,30 @@ static int lmv_target_seq_open(struct inode *inode, struct file *file)
 }
 
 struct lprocfs_vars lprocfs_lmv_obd_vars[] = {
-        { "numobd",       lmv_rd_numobd,          0, 0 },
-        { "activeobd",    lmv_rd_activeobd,       0, 0 },
-        { "uuid",         lprocfs_rd_uuid,        0, 0 },
-        { "desc_uuid",    lmv_rd_desc_uuid,       0, 0 },
+        { "numobd",             lmv_rd_numobd,          0, 0 },
+        { "placement",          lmv_rd_placement,       lmv_wr_placement, 0 },
+        { "activeobd",          lmv_rd_activeobd,       0, 0 },
+        { "uuid",               lprocfs_rd_uuid,        0, 0 },
+        { "desc_uuid",          lmv_rd_desc_uuid,       0, 0 },
         { 0 }
 };
 
 static struct lprocfs_vars lprocfs_lmv_module_vars[] = {
-        { "num_refs",     lprocfs_rd_numrefs,     0, 0 },
+        { "num_refs",           lprocfs_rd_numrefs,     0, 0 },
         { 0 }
 };
 
 struct file_operations lmv_proc_target_fops = {
-        .owner   = THIS_MODULE,
-        .open    = lmv_target_seq_open,
-        .read    = seq_read,
-        .llseek  = seq_lseek,
-        .release = seq_release,
+        .owner                = THIS_MODULE,
+        .open                 = lmv_target_seq_open,
+        .read                 = seq_read,
+        .llseek               = seq_lseek,
+        .release              = seq_release,
 };
 
 #endif /* LPROCFS */
 void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars)
 {
-    lvars->module_vars  = lprocfs_lmv_module_vars;
-    lvars->obd_vars     = lprocfs_lmv_obd_vars;
+        lvars->module_vars    = lprocfs_lmv_module_vars;
+        lvars->obd_vars       = lprocfs_lmv_obd_vars;
 }