* Copyright 2008 Sun Microsystems, Inc. All rights reserved
* Use is subject to license terms.
*
- * Copyright (c) 2011,2012 Whamcloud, Inc.
+ * Copyright (c) 2012, 2013, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#include "lod_internal.h"
#include <lustre_param.h>
+/*
+ * Notice, all the functions below (except for lod_procfs_init() and
+ * lod_procfs_fini()) are not supposed to be used directly. They are
+ * called by Linux kernel's procfs.
+ */
+
#ifdef LPROCFS
-static int lod_rd_stripesize(char *page, char **start, off_t off, int count,
- int *eof, void *data)
+
+/**
+ * Show default stripe size.
+ *
+ * \param[in] m seq file
+ * \param[in] v unused for single entry
+ *
+ * \retval 0 on success
+ * \retval negative error code if failed
+ */
+static int lod_stripesize_seq_show(struct seq_file *m, void *v)
{
- struct obd_device *dev = (struct obd_device *)data;
+ struct obd_device *dev = m->private;
struct lod_device *lod;
LASSERT(dev != NULL);
lod = lu2lod_dev(dev->obd_lu_dev);
- *eof = 1;
- return snprintf(page, count, LPU64"\n",
+ return seq_printf(m, LPU64"\n",
lod->lod_desc.ld_default_stripe_size);
}
-static int lod_wr_stripesize(struct file *file, const char *buffer,
- unsigned long count, void *data)
+/**
+ * Set default stripe size.
+ *
+ * \param[in] file proc file
+ * \param[in] buffer string containing the maximum number of bytes stored in
+ * each object before moving to the next object in the
+ * layout (if any)
+ * \param[in] count @buffer length
+ * \param[in] off unused for single entry
+ *
+ * \retval @count on success
+ * \retval negative error code if failed
+ */
+static ssize_t
+lod_stripesize_seq_write(struct file *file, const char *buffer,
+ size_t count, loff_t *off)
{
- struct obd_device *dev = (struct obd_device *)data;
+ struct seq_file *m = file->private_data;
+ struct obd_device *dev = m->private;
struct lod_device *lod;
__u64 val;
int rc;
lod->lod_desc.ld_default_stripe_size = val;
return count;
}
+LPROC_SEQ_FOPS(lod_stripesize);
-static int lod_rd_stripeoffset(char *page, char **start, off_t off, int count,
- int *eof, void *data)
+/**
+ * Show default stripe offset.
+ *
+ * \param[in] m seq file
+ * \param[in] v unused for single entry
+ *
+ * \retval 0 on success
+ * \retval negative error code if failed
+ */
+static int lod_stripeoffset_seq_show(struct seq_file *m, void *v)
{
- struct obd_device *dev = (struct obd_device *)data;
+ struct obd_device *dev = m->private;
struct lod_device *lod;
LASSERT(dev != NULL);
lod = lu2lod_dev(dev->obd_lu_dev);
- *eof = 1;
- return snprintf(page, count, LPU64"\n",
+ return seq_printf(m, LPU64"\n",
lod->lod_desc.ld_default_stripe_offset);
}
-static int lod_wr_stripeoffset(struct file *file, const char *buffer,
- unsigned long count, void *data)
+/**
+ * Set default stripe offset.
+ *
+ * Usually contains -1 allowing Lustre to balance objects among OST
+ * otherwise may cause severe OST imbalance.
+ *
+ * \param[in] file proc file
+ * \param[in] buffer string describing starting OST index for new files
+ * \param[in] count @buffer length
+ * \param[in] off unused for single entry
+ *
+ * \retval @count on success
+ * \retval negative error code if failed
+ */
+static ssize_t
+lod_stripeoffset_seq_write(struct file *file, const char *buffer,
+ size_t count, loff_t *off)
{
- struct obd_device *dev = (struct obd_device *)data;
+ struct seq_file *m = file->private_data;
+ struct obd_device *dev = m->private;
struct lod_device *lod;
__u64 val;
int rc;
lod->lod_desc.ld_default_stripe_offset = val;
return count;
}
+LPROC_SEQ_FOPS(lod_stripeoffset);
-static int lod_rd_stripetype(char *page, char **start, off_t off, int count,
- int *eof, void *data)
+/**
+ * Show default striping pattern (LOV_PATTERN_*).
+ *
+ * \param[in] m seq file
+ * \param[in] v unused for single entry
+ *
+ * \retval 0 on success
+ * \retval negative error code if failed
+ */
+static int lod_stripetype_seq_show(struct seq_file *m, void *v)
{
- struct obd_device *dev = (struct obd_device *)data;
+ struct obd_device *dev = m->private;
struct lod_device *lod;
LASSERT(dev != NULL);
lod = lu2lod_dev(dev->obd_lu_dev);
- *eof = 1;
- return snprintf(page, count, "%u\n", lod->lod_desc.ld_pattern);
+ return seq_printf(m, "%u\n", lod->lod_desc.ld_pattern);
}
-static int lod_wr_stripetype(struct file *file, const char *buffer,
- unsigned long count, void *data)
+/**
+ * Set default striping pattern (a number, not a human-readable string).
+ *
+ * \param[in] file proc file
+ * \param[in] buffer string containing the default striping pattern for new
+ * files. This is an integer LOV_PATTERN_* value
+ * \param[in] count @buffer length
+ * \param[in] off unused for single entry
+ *
+ * \retval @count on success
+ * \retval negative error code if failed
+ */
+static ssize_t
+lod_stripetype_seq_write(struct file *file, const char *buffer,
+ size_t count, loff_t *off)
{
- struct obd_device *dev = (struct obd_device *)data;
+ struct seq_file *m = file->private_data;
+ struct obd_device *dev = m->private;
struct lod_device *lod;
int val, rc;
lod->lod_desc.ld_pattern = val;
return count;
}
+LPROC_SEQ_FOPS(lod_stripetype);
-static int lod_rd_stripecount(char *page, char **start, off_t off, int count,
- int *eof, void *data)
+/**
+ * Show default number of stripes.
+ *
+ * \param[in] m seq file
+ * \param[in] v unused for single entry
+ *
+ * \retval 0 on success,
+ * \retval negative error code if failed
+ */
+static int lod_stripecount_seq_show(struct seq_file *m, void *v)
{
- struct obd_device *dev = (struct obd_device *)data;
+ struct obd_device *dev = m->private;
struct lod_device *lod;
LASSERT(dev != NULL);
lod = lu2lod_dev(dev->obd_lu_dev);
- *eof = 1;
- return snprintf(page, count, "%d\n",
+ return seq_printf(m, "%d\n",
(__s16)(lod->lod_desc.ld_default_stripe_count + 1) - 1);
}
-static int lod_wr_stripecount(struct file *file, const char *buffer,
- unsigned long count, void *data)
+/**
+ * Set default number of stripes.
+ *
+ * \param[in] file proc file
+ * \param[in] buffer string containing the default number of stripes
+ * for new files
+ * \param[in] count @buffer length
+ * \param[in] off unused for single entry
+ *
+ * \retval @count on success
+ * \retval negative error code otherwise
+ */
+static ssize_t
+lod_stripecount_seq_write(struct file *file, const char *buffer,
+ size_t count, loff_t *off)
{
- struct obd_device *dev = (struct obd_device *)data;
+ struct seq_file *m = file->private_data;
+ struct obd_device *dev = m->private;
struct lod_device *lod;
int val, rc;
lod->lod_desc.ld_default_stripe_count = val;
return count;
}
+LPROC_SEQ_FOPS(lod_stripecount);
-static int lod_rd_numobd(char *page, char **start, off_t off, int count,
- int *eof, void *data)
+/**
+ * Show number of targets.
+ *
+ * \param[in] m seq file
+ * \param[in] v unused for single entry
+ *
+ * \retval 0 on success
+ * \retval negative error code if failed
+ */
+static int lod_numobd_seq_show(struct seq_file *m, void *v)
{
- struct obd_device *dev = (struct obd_device*)data;
+ struct obd_device *dev = m->private;
struct lod_device *lod;
LASSERT(dev != NULL);
lod = lu2lod_dev(dev->obd_lu_dev);
- *eof = 1;
- return snprintf(page, count, "%u\n", lod->lod_desc.ld_tgt_count);
-
+ return seq_printf(m, "%u\n", lod->lod_desc.ld_tgt_count);
}
+LPROC_SEQ_FOPS_RO(lod_numobd);
-static int lod_rd_activeobd(char *page, char **start, off_t off, int count,
- int *eof, void *data)
+/**
+ * Show number of active targets.
+ *
+ * \param[in] m seq file
+ * \param[in] v unused for single entry
+ *
+ * \retval 0 on success
+ * \retval negative error code if failed
+ */
+static int lod_activeobd_seq_show(struct seq_file *m, void *v)
{
- struct obd_device* dev = (struct obd_device*)data;
+ struct obd_device *dev = m->private;
struct lod_device *lod;
LASSERT(dev != NULL);
lod = lu2lod_dev(dev->obd_lu_dev);
- *eof = 1;
- return snprintf(page, count, "%u\n",
- lod->lod_desc.ld_active_tgt_count);
+ return seq_printf(m, "%u\n", lod->lod_desc.ld_active_tgt_count);
}
+LPROC_SEQ_FOPS_RO(lod_activeobd);
-static int lod_rd_desc_uuid(char *page, char **start, off_t off, int count,
- int *eof, void *data)
+/**
+ * Show UUID of LOD device.
+ *
+ * \param[in] m seq file
+ * \param[in] v unused for single entry
+ *
+ * \retval 0 on success
+ * \retval negative error code if failed
+ */
+static int lod_desc_uuid_seq_show(struct seq_file *m, void *v)
{
- struct obd_device *dev = (struct obd_device*) data;
+ struct obd_device *dev = m->private;
struct lod_device *lod;
LASSERT(dev != NULL);
lod = lu2lod_dev(dev->obd_lu_dev);
- *eof = 1;
- return snprintf(page, count, "%s\n", lod->lod_desc.ld_uuid.uuid);
+ return seq_printf(m, "%s\n", lod->lod_desc.ld_uuid.uuid);
}
+LPROC_SEQ_FOPS_RO(lod_desc_uuid);
-/* free priority (0-255): how badly user wants to choose empty osts */
-static int lod_rd_qos_priofree(char *page, char **start, off_t off, int count,
- int *eof, void *data)
+/**
+ * Show QoS priority parameter.
+ *
+ * The printed value is a percentage value (0-100%) indicating the priority
+ * of free space compared to performance. 0% means select OSTs equally
+ * regardless of their free space, 100% means select OSTs only by their free
+ * space even if it results in very imbalanced load on the OSTs.
+ *
+ * \param[in] m seq file
+ * \param[in] v unused for single entry
+ *
+ * \retval 0 on success
+ * \retval negative error code if failed
+ */
+static int lod_qos_priofree_seq_show(struct seq_file *m, void *v)
{
- struct obd_device *dev = (struct obd_device*) data;
+ struct obd_device *dev = m->private;
struct lod_device *lod = lu2lod_dev(dev->obd_lu_dev);
LASSERT(lod != NULL);
- *eof = 1;
- return snprintf(page, count, "%d%%\n",
+ return seq_printf(m, "%d%%\n",
(lod->lod_qos.lq_prio_free * 100 + 255) >> 8);
}
-static int lod_wr_qos_priofree(struct file *file, const char *buffer,
- unsigned long count, void *data)
+/**
+ * Set QoS free space priority parameter.
+ *
+ * Set the relative priority of free OST space compared to OST load when OSTs
+ * are space imbalanced. See lod_qos_priofree_seq_show() for description of
+ * this parameter. See lod_qos_thresholdrr_seq_write() and lq_threshold_rr to
+ * determine what constitutes "space imbalanced" OSTs.
+ *
+ * \param[in] file proc file
+ * \param[in] buffer string which contains the free space priority (0-100)
+ * \param[in] count @buffer length
+ * \param[in] off unused for single entry
+ *
+ * \retval @count on success
+ * \retval negative error code if failed
+ */
+static ssize_t
+lod_qos_priofree_seq_write(struct file *file, const char __user *buffer,
+ size_t count, loff_t *off)
{
- struct obd_device *dev = (struct obd_device *)data;
+ struct seq_file *m = file->private_data;
+ struct obd_device *dev = m->private;
struct lod_device *lod;
int val, rc;
lod->lod_qos.lq_reset = 1;
return count;
}
+LPROC_SEQ_FOPS(lod_qos_priofree);
-static int lod_rd_qos_thresholdrr(char *page, char **start, off_t off,
- int count, int *eof, void *data)
+/**
+ * Show threshold for "same space on all OSTs" rule.
+ *
+ * \param[in] m seq file
+ * \param[in] v unused for single entry
+ *
+ * \retval 0 on success
+ * \retval negative error code if failed
+ */
+static int lod_qos_thresholdrr_seq_show(struct seq_file *m, void *v)
{
- struct obd_device *dev = (struct obd_device*) data;
+ struct obd_device *dev = m->private;
struct lod_device *lod;
LASSERT(dev != NULL);
lod = lu2lod_dev(dev->obd_lu_dev);
- *eof = 1;
- return snprintf(page, count, "%d%%\n",
+ return seq_printf(m, "%d%%\n",
(lod->lod_qos.lq_threshold_rr * 100 + 255) >> 8);
}
-static int lod_wr_qos_thresholdrr(struct file *file, const char *buffer,
- unsigned long count, void *data)
+/**
+ * Set threshold for "same space on all OSTs" rule.
+ *
+ * This sets the maximum percentage difference of free space between the most
+ * full and most empty OST in the currently available OSTs. If this percentage
+ * is exceeded, use the QoS allocator to select OSTs based on their available
+ * space so that more full OSTs are chosen less often, otherwise use the
+ * round-robin allocator for efficiency and performance.
+
+ * \param[in] file proc file
+ * \param[in] buffer string containing percentage difference of free space
+ * \param[in] count @buffer length
+ * \param[in] off unused for single entry
+ *
+ * \retval @count on success
+ * \retval negative error code if failed
+ */
+static ssize_t
+lod_qos_thresholdrr_seq_write(struct file *file, const char *buffer,
+ size_t count, loff_t *off)
{
- struct obd_device *dev = (struct obd_device *)data;
+ struct seq_file *m = file->private_data;
+ struct obd_device *dev = m->private;
struct lod_device *lod;
int val, rc;
lod->lod_qos.lq_dirty = 1;
return count;
}
+LPROC_SEQ_FOPS(lod_qos_thresholdrr);
-static int lod_rd_qos_maxage(char *page, char **start, off_t off, int count,
- int *eof, void *data)
+/**
+ * Show expiration period used to refresh cached statfs data, which
+ * is used to implement QoS/RR striping allocation algorithm.
+ *
+ * \param[in] m seq file
+ * \param[in] v unused for single entry
+ *
+ * \retval 0 on success
+ * \retval negative error code if failed
+ */
+static int lod_qos_maxage_seq_show(struct seq_file *m, void *v)
{
- struct obd_device *dev = (struct obd_device*) data;
+ struct obd_device *dev = m->private;
struct lod_device *lod;
LASSERT(dev != NULL);
lod = lu2lod_dev(dev->obd_lu_dev);
- *eof = 1;
- return snprintf(page, count, "%u Sec\n", lod->lod_desc.ld_qos_maxage);
+ return seq_printf(m, "%u Sec\n", lod->lod_desc.ld_qos_maxage);
}
-static int lod_wr_qos_maxage(struct file *file, const char *buffer,
- unsigned long count, void *data)
+/**
+ * Set expiration period used to refresh cached statfs data.
+ *
+ * \param[in] file proc file
+ * \param[in] buffer string contains maximum age of statfs data in seconds
+ * \param[in] count @buffer length
+ * \param[in] off unused for single entry
+ *
+ * \retval @count on success
+ * \retval negative error code if failed
+ */
+static ssize_t
+lod_qos_maxage_seq_write(struct file *file, const char *buffer,
+ size_t count, loff_t *off)
{
- struct obd_device *dev = (struct obd_device *)data;
+ struct seq_file *m = file->private_data;
+ struct obd_device *dev = m->private;
struct lustre_cfg_bufs bufs;
struct lod_device *lod;
struct lu_device *next;
struct lustre_cfg *lcfg;
char str[32];
- int val, rc, i;
+ unsigned int i;
+ int val, rc;
LASSERT(dev != NULL);
lod = lu2lod_dev(dev->obd_lu_dev);
sprintf(str, "%smaxage=%d", PARAM_OSP, val);
lustre_cfg_bufs_set_string(&bufs, 1, str);
lcfg = lustre_cfg_new(LCFG_PARAM, &bufs);
- lod_getref(lod);
+ if (lcfg == NULL)
+ return -ENOMEM;
+
+ lod_getref(&lod->lod_ost_descs);
lod_foreach_ost(lod, i) {
next = &OST_TGT(lod,i)->ltd_ost->dd_lu_dev;
rc = next->ld_ops->ldo_process_config(NULL, next, lcfg);
if (rc)
CERROR("can't set maxage on #%d: %d\n", i, rc);
}
- lod_putref(lod);
+ lod_putref(lod, &lod->lod_ost_descs);
lustre_cfg_free(lcfg);
return count;
}
+LPROC_SEQ_FOPS(lod_qos_maxage);
static void *lod_osts_seq_start(struct seq_file *p, loff_t *pos)
{
LASSERT(dev != NULL);
lod = lu2lod_dev(dev->obd_lu_dev);
- lod_getref(lod); /* released in lod_osts_seq_stop */
+ lod_getref(&lod->lod_ost_descs); /* released in lod_osts_seq_stop */
if (*pos >= lod->lod_ost_bitmap->size)
return NULL;
- *pos = cfs_find_next_bit(lod->lod_ost_bitmap->data,
+ *pos = find_next_bit(lod->lod_ost_bitmap->data,
lod->lod_ost_bitmap->size, *pos);
if (*pos < lod->lod_ost_bitmap->size)
return OST_TGT(lod,*pos);
LASSERT(dev != NULL);
lod = lu2lod_dev(dev->obd_lu_dev);
- lod_putref(lod);
+ lod_putref(lod, &lod->lod_ost_descs);
}
static void *lod_osts_seq_next(struct seq_file *p, void *v, loff_t *pos)
if (*pos >= lod->lod_ost_bitmap->size - 1)
return NULL;
- *pos = cfs_find_next_bit(lod->lod_ost_bitmap->data,
+ *pos = find_next_bit(lod->lod_ost_bitmap->data,
lod->lod_ost_bitmap->size, *pos + 1);
if (*pos < lod->lod_ost_bitmap->size)
return OST_TGT(lod,*pos);
return NULL;
}
+/**
+ * Show active/inactive status for OST found by lod_osts_seq_next().
+ *
+ * \param[in] m seq file
+ * \param[in] v unused for single entry
+ *
+ * \retval 0 on success
+ * \retval negative error code if failed
+ */
static int lod_osts_seq_show(struct seq_file *p, void *v)
{
struct obd_device *obd = p->private;
active ? "" : "IN");
}
-struct seq_operations lod_osts_sops = {
+static const struct seq_operations lod_osts_sops = {
.start = lod_osts_seq_start,
.stop = lod_osts_seq_stop,
.next = lod_osts_seq_next,
static int lod_osts_seq_open(struct inode *inode, struct file *file)
{
- struct proc_dir_entry *dp = PDE(inode);
struct seq_file *seq;
int rc;
- LPROCFS_ENTRY_AND_CHECK(dp);
rc = seq_open(file, &lod_osts_sops);
- if (rc) {
- LPROCFS_EXIT();
+ if (rc)
return rc;
- }
seq = file->private_data;
- seq->private = dp->data;
+ seq->private = PDE_DATA(inode);
return 0;
}
-struct lprocfs_vars lprocfs_lod_obd_vars[] = {
- { "uuid", lprocfs_rd_uuid, 0, 0 },
- { "stripesize", lod_rd_stripesize, lod_wr_stripesize, 0 },
- { "stripeoffset", lod_rd_stripeoffset, lod_wr_stripeoffset, 0 },
- { "stripecount", lod_rd_stripecount, lod_wr_stripecount, 0 },
- { "stripetype", lod_rd_stripetype, lod_wr_stripetype, 0 },
- { "numobd", lod_rd_numobd, 0, 0 },
- { "activeobd", lod_rd_activeobd, 0, 0 },
- { "filestotal", lprocfs_rd_filestotal, 0, 0 },
- { "filesfree", lprocfs_rd_filesfree, 0, 0 },
- /*{ "filegroups", lprocfs_rd_filegroups, 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 },
- { "desc_uuid", lod_rd_desc_uuid, 0, 0 },
- { "qos_prio_free",lod_rd_qos_priofree, lod_wr_qos_priofree, 0 },
- { "qos_threshold_rr", lod_rd_qos_thresholdrr, lod_wr_qos_thresholdrr, 0 },
- { "qos_maxage", lod_rd_qos_maxage, lod_wr_qos_maxage, 0 },
+LPROC_SEQ_FOPS_RO_TYPE(lod, uuid);
+
+LPROC_SEQ_FOPS_RO_TYPE(lod, dt_blksize);
+LPROC_SEQ_FOPS_RO_TYPE(lod, dt_kbytestotal);
+LPROC_SEQ_FOPS_RO_TYPE(lod, dt_kbytesfree);
+LPROC_SEQ_FOPS_RO_TYPE(lod, dt_kbytesavail);
+LPROC_SEQ_FOPS_RO_TYPE(lod, dt_filestotal);
+LPROC_SEQ_FOPS_RO_TYPE(lod, dt_filesfree);
+
+/**
+ * Show whether special failout mode for testing is enabled or not.
+ *
+ * \param[in] m seq file
+ * \param[in] v unused for single entry
+ *
+ * \retval 0 on success
+ * \retval negative error code if failed
+ */
+static int lod_lmv_failout_seq_show(struct seq_file *m, void *v)
+{
+ struct obd_device *dev = m->private;
+ struct lod_device *lod;
+
+ LASSERT(dev != NULL);
+ lod = lu2lod_dev(dev->obd_lu_dev);
+
+ return seq_printf(m, "%d\n", lod->lod_lmv_failout ? 1 : 0);
+}
+
+/**
+ * Enable/disable a special failout mode for testing.
+ *
+ * This determines whether the LMV will try to continue processing a striped
+ * directory even if it has a (partly) corrupted entry in the master directory,
+ * or if it will abort upon finding a corrupted slave directory entry.
+ *
+ * \param[in] file proc file
+ * \param[in] buffer string: 0 or non-zero to disable or enable LMV failout
+ * \param[in] count @buffer length
+ * \param[in] off unused for single entry
+ *
+ * \retval @count on success
+ * \retval negative error code if failed
+ */
+static ssize_t
+lod_lmv_failout_seq_write(struct file *file, const char *buffer,
+ size_t count, loff_t *off)
+{
+ struct seq_file *m = file->private_data;
+ struct obd_device *dev = m->private;
+ struct lod_device *lod;
+ int val = 0;
+ int rc;
+
+ LASSERT(dev != NULL);
+ lod = lu2lod_dev(dev->obd_lu_dev);
+
+ rc = lprocfs_write_helper(buffer, count, &val);
+ if (rc != 0)
+ return rc;
+
+ if (val != 0)
+ lod->lod_lmv_failout = 1;
+ else
+ lod->lod_lmv_failout = 0;
+
+ return count;
+}
+LPROC_SEQ_FOPS(lod_lmv_failout);
+
+static struct lprocfs_seq_vars lprocfs_lod_obd_vars[] = {
+ { .name = "uuid",
+ .fops = &lod_uuid_fops },
+ { .name = "stripesize",
+ .fops = &lod_stripesize_fops },
+ { .name = "stripeoffset",
+ .fops = &lod_stripeoffset_fops },
+ { .name = "stripecount",
+ .fops = &lod_stripecount_fops },
+ { .name = "stripetype",
+ .fops = &lod_stripetype_fops },
+ { .name = "numobd",
+ .fops = &lod_numobd_fops },
+ { .name = "activeobd",
+ .fops = &lod_activeobd_fops },
+ { .name = "desc_uuid",
+ .fops = &lod_desc_uuid_fops },
+ { .name = "qos_prio_free",
+ .fops = &lod_qos_priofree_fops },
+ { .name = "qos_threshold_rr",
+ .fops = &lod_qos_thresholdrr_fops },
+ { .name = "qos_maxage",
+ .fops = &lod_qos_maxage_fops },
+ { .name = "lmv_failout",
+ .fops = &lod_lmv_failout_fops },
{ 0 }
};
-static struct lprocfs_vars lprocfs_lod_module_vars[] = {
- { "num_refs", lprocfs_rd_numrefs, 0, 0 },
+static struct lprocfs_seq_vars lprocfs_lod_osd_vars[] = {
+ { "blocksize", &lod_dt_blksize_fops },
+ { "kbytestotal", &lod_dt_kbytestotal_fops },
+ { "kbytesfree", &lod_dt_kbytesfree_fops },
+ { "kbytesavail", &lod_dt_kbytesavail_fops },
+ { "filestotal", &lod_dt_filestotal_fops },
+ { "filesfree", &lod_dt_filesfree_fops },
{ 0 }
};
-void lprocfs_lod_init_vars(struct lprocfs_static_vars *lvars)
-{
- lvars->module_vars = lprocfs_lod_module_vars;
- lvars->obd_vars = lprocfs_lod_obd_vars;
-}
-
-struct file_operations lod_proc_target_fops = {
+static const struct file_operations lod_proc_target_fops = {
.owner = THIS_MODULE,
.open = lod_osts_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = lprocfs_seq_release,
};
+
+/**
+ * Initialize procfs entries for LOD.
+ *
+ * \param[in] lod LOD device
+ *
+ * \retval 0 on success
+ * \retval negative error code if failed
+ */
+int lod_procfs_init(struct lod_device *lod)
+{
+ struct obd_device *obd = lod2obd(lod);
+ struct proc_dir_entry *lov_proc_dir = NULL;
+ struct obd_type *type;
+ int rc;
+
+ obd->obd_vars = lprocfs_lod_obd_vars;
+ rc = lprocfs_obd_setup(obd);
+ if (rc) {
+ CERROR("%s: cannot setup procfs entry: %d\n",
+ obd->obd_name, rc);
+ RETURN(rc);
+ }
+
+ rc = lprocfs_seq_add_vars(obd->obd_proc_entry, lprocfs_lod_osd_vars,
+ &lod->lod_dt_dev);
+ if (rc) {
+ CERROR("%s: cannot setup procfs entry: %d\n",
+ obd->obd_name, rc);
+ GOTO(out, rc);
+ }
+
+ rc = lprocfs_seq_create(obd->obd_proc_entry, "target_obd",
+ 0444, &lod_proc_target_fops, obd);
+ if (rc) {
+ CWARN("%s: Error adding the target_obd file %d\n",
+ obd->obd_name, rc);
+ GOTO(out, rc);
+ }
+
+ lod->lod_pool_proc_entry = lprocfs_seq_register("pools",
+ obd->obd_proc_entry,
+ NULL, NULL);
+ if (IS_ERR(lod->lod_pool_proc_entry)) {
+ rc = PTR_ERR(lod->lod_pool_proc_entry);
+ lod->lod_pool_proc_entry = NULL;
+ CWARN("%s: Failed to create pool proc file: %d\n",
+ obd->obd_name, rc);
+ GOTO(out, rc);
+ }
+
+ /* If the real LOV is present which is the case for setups
+ * with both server and clients on the same node then use
+ * the LOV's proc root */
+ type = class_search_type(LUSTRE_LOV_NAME);
+ if (type != NULL && type->typ_procroot != NULL)
+ lov_proc_dir = type->typ_procroot;
+ else
+ lov_proc_dir = obd->obd_type->typ_procsym;
+
+ if (lov_proc_dir == NULL)
+ RETURN(0);
+
+ /* for compatibility we link old procfs's LOV entries to lod ones */
+ lod->lod_symlink = lprocfs_add_symlink(obd->obd_name, lov_proc_dir,
+ "../lod/%s", obd->obd_name);
+ if (lod->lod_symlink == NULL)
+ CERROR("cannot create LOV symlink for /proc/fs/lustre/lod/%s\n",
+ obd->obd_name);
+ RETURN(0);
+
+out:
+ lprocfs_obd_cleanup(obd);
+
+ return rc;
+}
+
+/**
+ * Cleanup procfs entries registred for LOD.
+ *
+ * \param[in] lod LOD device
+ */
+void lod_procfs_fini(struct lod_device *lod)
+{
+ struct obd_device *obd = lod2obd(lod);
+
+ if (lod->lod_symlink != NULL)
+ lprocfs_remove(&lod->lod_symlink);
+
+ if (lod->lod_pool_proc_entry != NULL) {
+ lprocfs_remove(&lod->lod_pool_proc_entry);
+ lod->lod_pool_proc_entry = NULL;
+ }
+
+ lprocfs_obd_cleanup(obd);
+}
+
#endif /* LPROCFS */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff