--- /dev/null
+/*
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * 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.
+ *
+ * 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).
+ *
+ * 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
+ *
+ * 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.
+ *
+ * Copyright (c) 2012, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ */
+
+#define DEBUG_SUBSYSTEM S_CLASS
+
+#include <linux/seq_file.h>
+#include <linux/statfs.h>
+#include "../include/lprocfs_status.h"
+#include "../include/obd_class.h"
+#include "lmv_internal.h"
+
+static int lmv_numobd_seq_show(struct seq_file *m, void *v)
+{
+ struct obd_device *dev = (struct obd_device *)m->private;
+ struct lmv_desc *desc;
+
+ LASSERT(dev != NULL);
+ desc = &dev->u.lmv.desc;
+ seq_printf(m, "%u\n", desc->ld_tgt_count);
+ return 0;
+}
+LPROC_SEQ_FOPS_RO(lmv_numobd);
+
+static const char *placement_name[] = {
+ [PLACEMENT_CHAR_POLICY] = "CHAR",
+ [PLACEMENT_NID_POLICY] = "NID",
+ [PLACEMENT_INVAL_POLICY] = "INVAL"
+};
+
+static enum placement_policy 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(enum placement_policy placement)
+{
+ LASSERT(placement < PLACEMENT_MAX_POLICY);
+ return placement_name[placement];
+}
+
+static int lmv_placement_seq_show(struct seq_file *m, void *v)
+{
+ struct obd_device *dev = (struct obd_device *)m->private;
+ struct lmv_obd *lmv;
+
+ LASSERT(dev != NULL);
+ lmv = &dev->u.lmv;
+ seq_printf(m, "%s\n", placement_policy2name(lmv->lmv_placement));
+ return 0;
+}
+
+#define MAX_POLICY_STRING_SIZE 64
+
+static ssize_t lmv_placement_seq_write(struct file *file,
+ const char __user *buffer,
+ size_t count, loff_t *off)
+{
+ struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
+ char dummy[MAX_POLICY_STRING_SIZE + 1];
+ int len = count;
+ enum placement_policy policy;
+ struct lmv_obd *lmv;
+
+ if (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) {
+ spin_lock(&lmv->lmv_lock);
+ lmv->lmv_placement = policy;
+ spin_unlock(&lmv->lmv_lock);
+ } else {
+ CERROR("Invalid placement policy \"%s\"!\n", dummy);
+ return -EINVAL;
+ }
+ return count;
+}
+LPROC_SEQ_FOPS(lmv_placement);
+
+static int lmv_activeobd_seq_show(struct seq_file *m, void *v)
+{
+ struct obd_device *dev = (struct obd_device *)m->private;
+ struct lmv_desc *desc;
+
+ LASSERT(dev != NULL);
+ desc = &dev->u.lmv.desc;
+ seq_printf(m, "%u\n", desc->ld_active_tgt_count);
+ return 0;
+}
+LPROC_SEQ_FOPS_RO(lmv_activeobd);
+
+static int lmv_desc_uuid_seq_show(struct seq_file *m, void *v)
+{
+ struct obd_device *dev = (struct obd_device *)m->private;
+ struct lmv_obd *lmv;
+
+ LASSERT(dev != NULL);
+ lmv = &dev->u.lmv;
+ seq_printf(m, "%s\n", lmv->desc.ld_uuid.uuid);
+ return 0;
+}
+LPROC_SEQ_FOPS_RO(lmv_desc_uuid);
+
+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;
+ return (*pos >= lmv->desc.ld_tgt_count) ? NULL : lmv->tgts[*pos];
+}
+
+static void lmv_tgt_seq_stop(struct seq_file *p, void *v)
+{
+ return;
+}
+
+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;
+ ++*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;
+
+ if (tgt == NULL)
+ return 0;
+ seq_printf(p, "%d: %s %sACTIVE\n",
+ tgt->ltd_idx, tgt->ltd_uuid.uuid,
+ tgt->ltd_active ? "" : "IN");
+ return 0;
+}
+
+static 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,
+};
+
+static int lmv_target_seq_open(struct inode *inode, struct file *file)
+{
+ struct seq_file *seq;
+ int rc;
+
+ rc = seq_open(file, &lmv_tgt_sops);
+ if (rc)
+ return rc;
+
+ seq = file->private_data;
+ seq->private = PDE_DATA(inode);
+
+ return 0;
+}
+
+LPROC_SEQ_FOPS_RO_TYPE(lmv, uuid);
+
+static struct lprocfs_vars lprocfs_lmv_obd_vars[] = {
+ { "numobd", &lmv_numobd_fops, NULL, 0 },
+ { "placement", &lmv_placement_fops, NULL, 0 },
+ { "activeobd", &lmv_activeobd_fops, NULL, 0 },
+ { "uuid", &lmv_uuid_fops, NULL, 0 },
+ { "desc_uuid", &lmv_desc_uuid_fops, NULL, 0 },
+ { NULL }
+};
+
+LPROC_SEQ_FOPS_RO_TYPE(lmv, numrefs);
+
+static struct lprocfs_vars lprocfs_lmv_module_vars[] = {
+ { "num_refs", &lmv_numrefs_fops, NULL, 0 },
+ { NULL }
+};
+
+struct file_operations lmv_proc_target_fops = {
+ .owner = THIS_MODULE,
+ .open = lmv_target_seq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars)
+{
+ lvars->module_vars = lprocfs_lmv_module_vars;
+ lvars->obd_vars = lprocfs_lmv_obd_vars;
+}
Code Review / kvmfornfv.git / blobdiff