/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Object Devices Class Driver
+ * GPL HEADER START
*
- * Copyright (C) 2001-2003 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.
*
- * These are the only exported functions, they provide some generic
- * infrastructure for managing object devices
+ * GPL HEADER END
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc. 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 EXPORT_SYMTAB
-#include <linux/config.h> /* for CONFIG_PROC_FS */
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/kernel.h>
-#include <linux/major.h>
-#include <linux/sched.h>
-#include <linux/lp.h>
-#include <linux/slab.h>
-#include <linux/ioport.h>
-#include <linux/fcntl.h>
-#include <linux/delay.h>
-#include <linux/skbuff.h>
-#include <linux/proc_fs.h>
-#include <linux/fs.h>
-#include <linux/poll.h>
-#include <linux/init.h>
-#include <linux/list.h>
-#include <linux/highmem.h>
-#include <asm/io.h>
-#include <asm/ioctls.h>
-#include <asm/system.h>
-#include <asm/poll.h>
-#include <asm/uaccess.h>
-#include <linux/miscdevice.h>
#define DEBUG_SUBSYSTEM S_CLASS
+#ifndef EXPORT_SYMTAB
+# define EXPORT_SYMTAB
+#endif
+#ifndef __KERNEL__
+# include <liblustre.h>
+#else
+# include <asm/atomic.h>
+#endif
-#include <linux/obd_support.h>
-#include <linux/obd_class.h>
-#include <linux/lustre_debug.h>
-#include <linux/smp_lock.h>
-#include <linux/lprocfs_status.h>
-#include <portals/lib-types.h> /* for PTL_MD_MAX_IOV */
-#include <linux/lustre_build_version.h>
+#include <obd_support.h>
+#include <obd_class.h>
+#include <lnet/lnetctl.h>
+#include <lustre_debug.h>
+#include <lprocfs_status.h>
+#include <lustre/lustre_build_version.h>
+#include <libcfs/list.h>
+#include "llog_internal.h"
+
+#ifndef __KERNEL__
+/* liblustre workaround */
+cfs_atomic_t libcfs_kmemory = {0};
+#endif
-struct semaphore obd_conf_sem; /* serialize configuration commands */
-struct obd_device obd_dev[MAX_OBD_DEVICES];
-struct list_head obd_types;
-atomic_t obd_memory;
-int obd_memmax;
+struct obd_device *obd_devs[MAX_OBD_DEVICES];
+cfs_list_t obd_types;
+cfs_spinlock_t obd_dev_lock = CFS_SPIN_LOCK_UNLOCKED;
-/* Root for /proc/lustre */
-struct proc_dir_entry *proc_lustre_root = NULL;
+#ifndef __KERNEL__
+__u64 obd_max_pages = 0;
+__u64 obd_max_alloc = 0;
+__u64 obd_alloc;
+__u64 obd_pages;
+#endif
/* The following are visible and mutable through /proc/sys/lustre/. */
-unsigned long obd_fail_loc;
-unsigned long obd_timeout = 100;
-char obd_recovery_upcall[128] = "/usr/lib/lustre/ha_assist";
-unsigned long obd_sync_filter; /* = 0, don't sync by default */
-
-/* opening /dev/obd */
-static int obd_class_open(struct inode * inode, struct file * file)
-{
- struct obd_class_user_state *ocus;
- ENTRY;
-
- OBD_ALLOC (ocus, sizeof (*ocus));
- if (ocus == NULL)
- return (-ENOMEM);
-
- INIT_LIST_HEAD (&ocus->ocus_conns);
- ocus->ocus_current_obd = NULL;
- file->private_data = ocus;
-
- MOD_INC_USE_COUNT;
- RETURN(0);
-}
-
-static int
-obd_class_add_user_conn (struct obd_class_user_state *ocus,
- struct lustre_handle *conn)
+unsigned int obd_debug_peer_on_timeout;
+unsigned int obd_dump_on_timeout;
+unsigned int obd_dump_on_eviction;
+unsigned int obd_max_dirty_pages = 256;
+unsigned int obd_timeout = OBD_TIMEOUT_DEFAULT; /* seconds */
+unsigned int ldlm_timeout = LDLM_TIMEOUT_DEFAULT; /* seconds */
+/* Adaptive timeout defs here instead of ptlrpc module for /proc/sys/ access */
+unsigned int at_min = 0;
+unsigned int at_max = 600;
+unsigned int at_history = 600;
+int at_early_margin = 5;
+int at_extra = 30;
+
+cfs_atomic_t obd_dirty_pages;
+cfs_atomic_t obd_dirty_transit_pages;
+
+cfs_waitq_t obd_race_waitq;
+int obd_race_state;
+
+#ifdef __KERNEL__
+unsigned long obd_print_fail_loc(void)
{
- struct obd_class_user_conn *c;
-
- /* NB holding obd_conf_sem */
-
- OBD_ALLOC (c, sizeof (*c));
- if (ocus == NULL)
- return (-ENOMEM);
-
- c->ocuc_conn = *conn;
- list_add (&c->ocuc_chain, &ocus->ocus_conns);
- return (0);
-}
-
-static void
-obd_class_remove_user_conn (struct obd_class_user_state *ocus,
- struct lustre_handle *conn)
-{
- struct list_head *e;
- struct obd_class_user_conn *c;
-
- /* NB holding obd_conf_sem or last reference */
-
- list_for_each (e, &ocus->ocus_conns) {
- c = list_entry (e, struct obd_class_user_conn, ocuc_chain);
- if (!memcmp (conn, &c->ocuc_conn, sizeof (*conn))) {
- list_del (&c->ocuc_chain);
- OBD_FREE (c, sizeof (*c));
- return;
- }
- }
-}
-
-/* closing /dev/obd */
-static int obd_class_release(struct inode * inode, struct file * file)
-{
- struct obd_class_user_state *ocus = file->private_data;
- struct obd_class_user_conn *c;
- ENTRY;
-
- while (!list_empty (&ocus->ocus_conns)) {
- c = list_entry (ocus->ocus_conns.next,
- struct obd_class_user_conn, ocuc_chain);
- list_del (&c->ocuc_chain);
-
- CDEBUG (D_IOCTL, "Auto-disconnect %p\n", &c->ocuc_conn);
-
- down (&obd_conf_sem);
- obd_disconnect (&c->ocuc_conn);
- up (&obd_conf_sem);
-
- OBD_FREE (c, sizeof (*c));
- }
-
- OBD_FREE (ocus, sizeof (*ocus));
-
- MOD_DEC_USE_COUNT;
- RETURN(0);
+ CWARN("obd_fail_loc = %lx\n", obd_fail_loc);
+ return obd_fail_loc;
}
+#endif
static inline void obd_data2conn(struct lustre_handle *conn,
struct obd_ioctl_data *data)
{
- conn->addr = data->ioc_addr;
+ memset(conn, 0, sizeof *conn);
conn->cookie = data->ioc_cookie;
}
static inline void obd_conn2data(struct obd_ioctl_data *data,
struct lustre_handle *conn)
{
- data->ioc_addr = conn->addr;
data->ioc_cookie = conn->cookie;
}
-static void forcibly_detach_exports(struct obd_device *obd)
+int class_resolve_dev_name(__u32 len, const char *name)
{
int rc;
- struct list_head *tmp, *n;
- struct lustre_handle fake_conn;
-
- CDEBUG(D_IOCTL, "OBD device %d (%p) has exports, "
- "disconnecting them", obd->obd_minor, obd);
- list_for_each_safe(tmp, n, &obd->obd_exports) {
- struct obd_export *exp = list_entry(tmp, struct obd_export,
- exp_obd_chain);
- fake_conn.addr = (__u64)(unsigned long)exp;
- fake_conn.cookie = exp->exp_cookie;
- rc = obd_disconnect(&fake_conn);
- if (rc) {
- CDEBUG(D_IOCTL, "disconnecting export %p failed: %d\n",
- exp, rc);
- } else {
- CDEBUG(D_IOCTL, "export %p disconnected\n", exp);
- }
+ int dev;
+
+ ENTRY;
+ if (!len || !name) {
+ CERROR("No name passed,!\n");
+ GOTO(out, rc = -EINVAL);
+ }
+ if (name[len - 1] != 0) {
+ CERROR("Name not nul terminated!\n");
+ GOTO(out, rc = -EINVAL);
}
+
+ CDEBUG(D_IOCTL, "device name %s\n", name);
+ dev = class_name2dev(name);
+ if (dev == -1) {
+ CDEBUG(D_IOCTL, "No device for name %s!\n", name);
+ GOTO(out, rc = -EINVAL);
+ }
+
+ CDEBUG(D_IOCTL, "device name %s, dev %d\n", name, dev);
+ rc = dev;
+
+out:
+ RETURN(rc);
}
-/* to control /dev/obd */
-static int obd_class_ioctl (struct inode * inode, struct file * filp,
- unsigned int cmd, unsigned long arg)
+int class_handle_ioctl(unsigned int cmd, unsigned long arg)
{
char *buf = NULL;
struct obd_ioctl_data *data;
- struct obd_class_user_state *ocus = filp->private_data;
- struct obd_device *obd = ocus->ocus_current_obd;
- struct lustre_handle conn;
- int err = 0, len = 0, serialised = 0;
+ struct libcfs_debug_ioctl_data *debug_data;
+ struct obd_device *obd = NULL;
+ int err = 0, len = 0;
ENTRY;
- switch (cmd) {
- case OBD_IOC_BRW_WRITE:
- case OBD_IOC_BRW_READ:
- case OBD_IOC_GETATTR:
- case ECHO_IOC_ENQUEUE:
- case ECHO_IOC_CANCEL:
- break;
- default:
- down(&obd_conf_sem);
- serialised = 1;
- break;
+ /* only for debugging */
+ if (cmd == LIBCFS_IOC_DEBUG_MASK) {
+ debug_data = (struct libcfs_debug_ioctl_data*)arg;
+ libcfs_subsystem_debug = debug_data->subs;
+ libcfs_debug = debug_data->debug;
+ return 0;
}
- if (!obd && cmd != OBD_IOC_DEVICE && cmd != TCGETS &&
- cmd != OBD_IOC_LIST && cmd != OBD_GET_VERSION &&
- cmd != OBD_IOC_NAME2DEV && cmd != OBD_IOC_NEWDEV) {
- CERROR("OBD ioctl: No device\n");
- GOTO(out, err = -EINVAL);
- }
+ CDEBUG(D_IOCTL, "cmd = %x\n", cmd);
if (obd_ioctl_getdata(&buf, &len, (void *)arg)) {
CERROR("OBD ioctl: data error\n");
GOTO(out, err = -EINVAL);
data = (struct obd_ioctl_data *)buf;
switch (cmd) {
- case TCGETS:
- GOTO(out, err=-EINVAL);
- case OBD_IOC_DEVICE: {
- CDEBUG(D_IOCTL, "\n");
- if (data->ioc_dev >= MAX_OBD_DEVICES || data->ioc_dev < 0) {
- CERROR("OBD ioctl: DEVICE insufficient devices\n");
- GOTO(out, err=-EINVAL);
- }
- CDEBUG(D_IOCTL, "device %d\n", data->ioc_dev);
+ case OBD_IOC_PROCESS_CFG: {
+ struct lustre_cfg *lcfg;
- ocus->ocus_current_obd = &obd_dev[data->ioc_dev];
- GOTO(out, err=0);
- }
-
- case OBD_IOC_LIST: {
- int i;
- char *buf2 = data->ioc_bulk;
- int remains = data->ioc_inllen1;
-
- if (!data->ioc_inlbuf1) {
- CERROR("No buffer passed!\n");
- GOTO(out, err=-EINVAL);
- }
-
-
- for (i = 0 ; i < MAX_OBD_DEVICES ; i++) {
- int l;
- char *status;
- struct obd_device *obd = &obd_dev[i];
- if (!obd->obd_type)
- continue;
- if (obd->obd_flags & OBD_SET_UP)
- status = "UP";
- else if (obd->obd_flags & OBD_ATTACHED)
- status = "AT";
- else
- status = "-";
- l = snprintf(buf2, remains, "%2d %s %s %s %s %d\n",
- i, status, obd->obd_type->typ_name,
- obd->obd_name, obd->obd_uuid.uuid, obd->obd_type->typ_refcnt);
- buf2 +=l;
- remains -=l;
- if (remains <= 0) {
- CERROR("not enough space for device listing\n");
- break;
- }
+ if (!data->ioc_plen1 || !data->ioc_pbuf1) {
+ CERROR("No config buffer passed!\n");
+ GOTO(out, err = -EINVAL);
}
-
- err = copy_to_user((void *)arg, data, len);
- if (err)
- err = -EFAULT;
+ OBD_ALLOC(lcfg, data->ioc_plen1);
+ if (lcfg == NULL)
+ GOTO(out, err = -ENOMEM);
+ err = cfs_copy_from_user(lcfg, data->ioc_pbuf1,
+ data->ioc_plen1);
+ if (!err)
+ err = lustre_cfg_sanity_check(lcfg, data->ioc_plen1);
+ if (!err)
+ err = class_process_config(lcfg);
+
+ OBD_FREE(lcfg, data->ioc_plen1);
GOTO(out, err);
}
memcpy(data->ioc_bulk, BUILD_VERSION,
strlen(BUILD_VERSION) + 1);
- err = copy_to_user((void *)arg, data, len);
+ err = obd_ioctl_popdata((void *)arg, data, len);
if (err)
err = -EFAULT;
GOTO(out, err);
*/
int dev;
- if (!data->ioc_inllen1 || !data->ioc_inlbuf1 ) {
- CERROR("No name passed,!\n");
- GOTO(out, err=-EINVAL);
- }
- if (data->ioc_inlbuf1[data->ioc_inllen1-1] !=0) {
- CERROR("Name not nul terminated!\n");
- GOTO(out, err=-EINVAL);
- }
-
- CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1);
- dev = class_name2dev(data->ioc_inlbuf1);
+ dev = class_resolve_dev_name(data->ioc_inllen1,
+ data->ioc_inlbuf1);
data->ioc_dev = dev;
- if (dev == -1) {
- CDEBUG(D_IOCTL, "No device for name %s!\n",
- data->ioc_inlbuf1);
- GOTO(out, err=-EINVAL);
- }
+ if (dev < 0)
+ GOTO(out, err = -EINVAL);
- CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1,
- dev);
- err = copy_to_user((void *)arg, data, sizeof(*data));
+ err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
if (err)
err = -EFAULT;
GOTO(out, err);
if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
CERROR("No UUID passed!\n");
- GOTO(out, err=-EINVAL);
+ GOTO(out, err = -EINVAL);
}
- if (data->ioc_inlbuf1[data->ioc_inllen1-1] !=0) {
- CERROR("Name not nul terminated!\n");
- GOTO(out, err=-EINVAL);
+ if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
+ CERROR("UUID not NUL terminated!\n");
+ GOTO(out, err = -EINVAL);
}
CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1);
dev = class_uuid2dev(&uuid);
data->ioc_dev = dev;
if (dev == -1) {
- CDEBUG(D_IOCTL, "No device for name %s!\n",
+ CDEBUG(D_IOCTL, "No device for UUID %s!\n",
data->ioc_inlbuf1);
- GOTO(out, err=-EINVAL);
+ GOTO(out, err = -EINVAL);
}
CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1,
dev);
- err = copy_to_user((void *)arg, data, sizeof(*data));
+ err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
if (err)
err = -EFAULT;
GOTO(out, err);
}
- case OBD_IOC_NEWDEV: {
- int dev = -1;
- int i;
-
- ocus->ocus_current_obd = NULL;
- for (i = 0 ; i < MAX_OBD_DEVICES ; i++) {
- struct obd_device *obd = &obd_dev[i];
- if (!obd->obd_type) {
- ocus->ocus_current_obd = obd;
- dev = i;
- break;
- }
- }
-
-
- data->ioc_dev = dev;
- if (dev == -1)
- GOTO(out, err=-EINVAL);
-
- err = copy_to_user((void *)arg, data, sizeof(*data));
- if (err)
- err = -EFAULT;
- GOTO(out, err);
+ case OBD_IOC_CLOSE_UUID: {
+ CDEBUG(D_IOCTL, "closing all connections to uuid %s (NOOP)\n",
+ data->ioc_inlbuf1);
+ GOTO(out, err = 0);
}
- case OBD_IOC_ATTACH: {
- struct obd_type *type;
- int minor;
+ case OBD_IOC_GETDEVICE: {
+ int index = data->ioc_count;
+ char *status, *str;
- /* have we attached a type to this device */
- if (obd->obd_flags & OBD_ATTACHED || obd->obd_type) {
- CERROR("OBD: Device %d already typed as %s.\n",
- obd->obd_minor, MKSTR(obd->obd_type->typ_name));
- GOTO(out, err = -EBUSY);
- }
-
- if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
- CERROR("No type passed!\n");
- GOTO(out, err = -EINVAL);
- }
- if (data->ioc_inlbuf1[data->ioc_inllen1-1] !=0) {
- CERROR("Type not nul terminated!\n");
+ if (!data->ioc_inlbuf1) {
+ CERROR("No buffer passed in ioctl\n");
GOTO(out, err = -EINVAL);
}
-
- CDEBUG(D_IOCTL, "attach type %s name: %s uuid: %s\n",
- MKSTR(data->ioc_inlbuf1),
- MKSTR(data->ioc_inlbuf2), MKSTR(data->ioc_inlbuf3));
-
- /* find the type */
- type = class_get_type(data->ioc_inlbuf1);
- if (!type) {
- CERROR("OBD: unknown type dev %d\n", obd->obd_minor);
+ if (data->ioc_inllen1 < 128) {
+ CERROR("ioctl buffer too small to hold version\n");
GOTO(out, err = -EINVAL);
}
- minor = obd->obd_minor;
- memset(obd, 0, sizeof(*obd));
- obd->obd_minor = minor;
- obd->obd_type = type;
- INIT_LIST_HEAD(&obd->obd_exports);
- INIT_LIST_HEAD(&obd->obd_imports);
- spin_lock_init(&obd->obd_dev_lock);
-
- if (data->ioc_inlbuf2) {
- int len = strlen(data->ioc_inlbuf2) + 1;
- OBD_ALLOC(obd->obd_name, len);
- if (!obd->obd_name) {
- class_put_type(obd->obd_type);
- obd->obd_type = NULL;
- GOTO(out, err = -ENOMEM);
- }
- memcpy(obd->obd_name, data->ioc_inlbuf2, len);
- } else {
- CERROR("WARNING: unnamed obd device\n");
- }
- if (data->ioc_inlbuf3) {
- int len = strlen(data->ioc_inlbuf3);
- if (len >= sizeof(obd->obd_uuid)) {
- CERROR("uuid must be < "LPSZ" bytes long\n",
- sizeof(obd->obd_uuid));
- if (obd->obd_name)
- OBD_FREE(obd->obd_name,
- strlen(obd->obd_name) + 1);
- class_put_type(obd->obd_type);
- obd->obd_type = NULL;
- GOTO(out, err=-EINVAL);
- }
- memcpy(obd->obd_uuid.uuid, data->ioc_inlbuf3, len);
- }
- /* do the attach */
- if (OBP(obd, attach))
- err = OBP(obd,attach)(obd, sizeof(*data), data);
- if (err) {
- if(data->ioc_inlbuf2)
- OBD_FREE(obd->obd_name, strlen(obd->obd_name)+1);
- class_put_type(obd->obd_type);
- obd->obd_type = NULL;
- } else {
- obd->obd_flags |= OBD_ATTACHED;
-
- type->typ_refcnt++;
- CDEBUG(D_IOCTL, "OBD: dev %d attached type %s\n",
- obd->obd_minor, data->ioc_inlbuf1);
- }
-
- GOTO(out, err);
- }
-
- case OBD_IOC_DETACH: {
- ENTRY;
- if (obd->obd_flags & OBD_SET_UP) {
- CERROR("OBD device %d still set up\n", obd->obd_minor);
- GOTO(out, err=-EBUSY);
- }
- if (!(obd->obd_flags & OBD_ATTACHED) ) {
- CERROR("OBD device %d not attached\n", obd->obd_minor);
- GOTO(out, err=-ENODEV);
- }
- if (OBP(obd, detach))
- err = OBP(obd,detach)(obd);
-
- if (obd->obd_name) {
- OBD_FREE(obd->obd_name, strlen(obd->obd_name)+1);
- obd->obd_name = NULL;
- }
+ obd = class_num2obd(index);
+ if (!obd)
+ GOTO(out, err = -ENOENT);
+
+ if (obd->obd_stopping)
+ status = "ST";
+ else if (obd->obd_set_up)
+ status = "UP";
+ else if (obd->obd_attached)
+ status = "AT";
+ else
+ status = "--";
+ str = (char *)data->ioc_bulk;
+ snprintf(str, len - sizeof(*data), "%3d %s %s %s %s %d",
+ (int)index, status, obd->obd_type->typ_name,
+ obd->obd_name, obd->obd_uuid.uuid,
+ cfs_atomic_read(&obd->obd_refcount));
+ err = obd_ioctl_popdata((void *)arg, data, len);
- obd->obd_flags &= ~OBD_ATTACHED;
- obd->obd_type->typ_refcnt--;
- class_put_type(obd->obd_type);
- obd->obd_type = NULL;
GOTO(out, err = 0);
}
- case OBD_IOC_SETUP: {
- /* have we attached a type to this device? */
- if (!(obd->obd_flags & OBD_ATTACHED)) {
- CERROR("Device %d not attached\n", obd->obd_minor);
- GOTO(out, err=-ENODEV);
- }
-
- /* has this been done already? */
- if ( obd->obd_flags & OBD_SET_UP ) {
- CERROR("Device %d already setup (type %s)\n",
- obd->obd_minor, obd->obd_type->typ_name);
- GOTO(out, err=-EBUSY);
- }
-
- if ( OBT(obd) && OBP(obd, setup) )
- err = obd_setup(obd, sizeof(*data), data);
-
- if (!err) {
- obd->obd_type->typ_refcnt++;
- obd->obd_flags |= OBD_SET_UP;
- }
-
- GOTO(out, err);
}
- case OBD_IOC_CLEANUP: {
- /* have we attached a type to this device? */
- if (!(obd->obd_flags & OBD_ATTACHED)) {
- CERROR("Device %d not attached\n", obd->obd_minor);
- GOTO(out, err=-ENODEV);
- }
- if (!list_empty(&obd->obd_exports)) {
- if (!data->ioc_inlbuf1 || data->ioc_inlbuf1[0] != 'F') {
- CERROR("OBD device %d (%p) has exports\n",
- obd->obd_minor, obd);
- GOTO(out, err = -EBUSY);
- }
- forcibly_detach_exports(obd);
- }
- if (OBT(obd) && OBP(obd, cleanup))
- err = obd_cleanup(obd);
- if (!err) {
- obd->obd_flags &= ~OBD_SET_UP;
- obd->obd_type->typ_refcnt--;
- }
- GOTO(out, err);
+ if (data->ioc_dev == OBD_DEV_BY_DEVNAME) {
+ if (data->ioc_inllen4 <= 0 || data->ioc_inlbuf4 == NULL)
+ GOTO(out, err = -EINVAL);
+ if (strnlen(data->ioc_inlbuf4, MAX_OBD_NAME) >= MAX_OBD_NAME)
+ GOTO(out, err = -EINVAL);
+ obd = class_name2obd(data->ioc_inlbuf4);
+ } else if (data->ioc_dev < class_devno_max()) {
+ obd = class_num2obd(data->ioc_dev);
+ } else {
+ CERROR("OBD ioctl: No device\n");
+ GOTO(out, err = -EINVAL);
}
- case OBD_IOC_CONNECT: {
- struct obd_uuid cluuid = { "OBD_CLASS_UUID" };
- obd_data2conn(&conn, data);
-
- err = obd_connect(&conn, obd, &cluuid, NULL, NULL);
-
- CDEBUG(D_IOCTL, "assigned export "LPX64"\n", conn.addr);
- obd_conn2data(data, &conn);
- if (err)
- GOTO(out, err);
-
- err = obd_class_add_user_conn (ocus, &conn);
- if (err != 0) {
- obd_disconnect (&conn);
- GOTO (out, err);
- }
-
- err = copy_to_user((void *)arg, data, sizeof(*data));
- if (err != 0) {
- obd_class_remove_user_conn (ocus, &conn);
- obd_disconnect (&conn);
- GOTO (out, err=-EFAULT);
- }
- GOTO(out, err);
+ if (obd == NULL) {
+ CERROR("OBD ioctl : No Device %d\n", data->ioc_dev);
+ GOTO(out, err = -EINVAL);
}
+ LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
- case OBD_IOC_DISCONNECT: {
- obd_data2conn(&conn, data);
- obd_class_remove_user_conn (ocus, &conn);
- err = obd_disconnect(&conn);
- GOTO(out, err);
+ if (!obd->obd_set_up || obd->obd_stopping) {
+ CERROR("OBD ioctl: device not setup %d \n", data->ioc_dev);
+ GOTO(out, err = -EINVAL);
}
+ switch(cmd) {
case OBD_IOC_NO_TRANSNO: {
- if (!(obd->obd_flags & OBD_ATTACHED)) {
+ if (!obd->obd_attached) {
CERROR("Device %d not attached\n", obd->obd_minor);
- GOTO(out, err=-ENODEV);
+ GOTO(out, err = -ENODEV);
}
- CDEBUG(D_IOCTL,
- "disabling committed-transno notifications on %d\n",
- obd->obd_minor);
- obd->obd_flags |= OBD_NO_TRANSNO;
+ CDEBUG(D_HA, "%s: disabling committed-transno notification\n",
+ obd->obd_name);
+ obd->obd_no_transno = 1;
GOTO(out, err = 0);
}
- default:
- obd_data2conn(&conn, data);
-
- err = obd_iocontrol(cmd, &conn, len, data, NULL);
+ default: {
+ err = obd_iocontrol(cmd, obd->obd_self_export, len, data, NULL);
if (err)
GOTO(out, err);
- err = copy_to_user((void *)arg, data, len);
+ err = obd_ioctl_popdata((void *)arg, data, len);
if (err)
err = -EFAULT;
GOTO(out, err);
}
+ }
out:
if (buf)
- OBD_FREE(buf, len);
- if (serialised)
- up(&obd_conf_sem);
+ obd_ioctl_freedata(buf, len);
RETURN(err);
-} /* obd_class_ioctl */
-
+} /* class_handle_ioctl */
-/* declare character device */
-static struct file_operations obd_psdev_fops = {
- ioctl: obd_class_ioctl, /* ioctl */
- open: obd_class_open, /* open */
- release: obd_class_release, /* release */
-};
-/* modules setup */
-#define OBD_MINOR 241
-static struct miscdevice obd_psdev = {
- OBD_MINOR,
- "obd_psdev",
- &obd_psdev_fops
-};
-
-void (*class_signal_connection_failure)(struct ptlrpc_connection *);
-
-#ifdef CONFIG_HIGHMEM
-/* Allow at most 3/4 of the kmap mappings to be consumed by vector I/O
- * requests. This avoids deadlocks on servers which have a lot of clients
- * doing vector I/O. We don't need to do this for non-vector I/O requests
- * because singleton requests will just block on the kmap itself and never
- * deadlock waiting for additional kmaps to complete.
- *
- * If we are a "server" task, we can have at most a single reservation
- * in excess of the maximum. This avoids a deadlock when multiple client
- * threads are on the same machine as the server threads, and the clients
- * have consumed all of the available mappings. As long as a single server
- * thread is can make progress, we are guaranteed to avoid deadlock.
- */
-#define OBD_KMAP_MAX (LAST_PKMAP * 3 / 4)
-static atomic_t obd_kmap_count = ATOMIC_INIT(OBD_KMAP_MAX);
-static DECLARE_WAIT_QUEUE_HEAD(obd_kmap_waitq);
-
-void obd_kmap_get(int count, int server)
-{
- //CERROR("getting %d kmap counts (%d/%d)\n", count,
- // atomic_read(&obd_kmap_count), OBD_KMAP_MAX);
- if (count == 1)
- atomic_dec(&obd_kmap_count);
- else while (atomic_add_negative(-count, &obd_kmap_count)) {
- static long next_show = 0;
- static int skipped = 0;
-
- if (server && atomic_read(&obd_kmap_count) >= -PTL_MD_MAX_IOV)
- break;
-
- CDEBUG(D_OTHER, "negative kmap reserved count: %d\n",
- atomic_read(&obd_kmap_count));
- atomic_add(count, &obd_kmap_count);
-
- if (time_after(jiffies, next_show)) {
- CERROR("blocking %s (and %d others) for kmaps\n",
- current->comm, skipped);
- next_show = jiffies + 5*HZ;
- skipped = 0;
- } else
- skipped++;
- wait_event(obd_kmap_waitq,
- atomic_read(&obd_kmap_count) >= count);
- }
-}
-
-void obd_kmap_put(int count)
-{
- atomic_add(count, &obd_kmap_count);
- /* Wake up sleepers. Sadly, this wakes up all of the tasks at once.
- * We could have something smarter here like:
- while (atomic_read(&obd_kmap_count) > 0)
- wake_up_nr(obd_kmap_waitq, 1);
- although we would need to set somewhere (probably obd_class_init):
- obd_kmap_waitq.flags |= WQ_FLAG_EXCLUSIVE;
- For now the wait_event() condition will handle this OK I believe.
- */
- if (atomic_read(&obd_kmap_count) > 0)
- wake_up(&obd_kmap_waitq);
-}
-
-EXPORT_SYMBOL(obd_kmap_get);
-EXPORT_SYMBOL(obd_kmap_put);
+#ifdef __KERNEL__
+extern cfs_psdev_t obd_psdev;
+#else
+void *obd_psdev = NULL;
#endif
-EXPORT_SYMBOL(obd_dev);
-EXPORT_SYMBOL(obdo_cachep);
-EXPORT_SYMBOL(obd_memory);
-EXPORT_SYMBOL(obd_memmax);
-EXPORT_SYMBOL(obd_fail_loc);
+EXPORT_SYMBOL(obd_devs);
+EXPORT_SYMBOL(obd_print_fail_loc);
+EXPORT_SYMBOL(obd_race_waitq);
+EXPORT_SYMBOL(obd_race_state);
+EXPORT_SYMBOL(obd_debug_peer_on_timeout);
+EXPORT_SYMBOL(obd_dump_on_timeout);
+EXPORT_SYMBOL(obd_dump_on_eviction);
EXPORT_SYMBOL(obd_timeout);
-EXPORT_SYMBOL(obd_recovery_upcall);
-EXPORT_SYMBOL(obd_sync_filter);
+EXPORT_SYMBOL(ldlm_timeout);
+EXPORT_SYMBOL(obd_max_dirty_pages);
+EXPORT_SYMBOL(obd_dirty_pages);
+EXPORT_SYMBOL(obd_dirty_transit_pages);
+EXPORT_SYMBOL(at_min);
+EXPORT_SYMBOL(at_max);
+EXPORT_SYMBOL(at_extra);
+EXPORT_SYMBOL(at_early_margin);
+EXPORT_SYMBOL(at_history);
EXPORT_SYMBOL(ptlrpc_put_connection_superhack);
-EXPORT_SYMBOL(ptlrpc_abort_inflight_superhack);
+
EXPORT_SYMBOL(proc_lustre_root);
EXPORT_SYMBOL(class_register_type);
EXPORT_SYMBOL(class_get_type);
EXPORT_SYMBOL(class_put_type);
EXPORT_SYMBOL(class_name2dev);
+EXPORT_SYMBOL(class_name2obd);
EXPORT_SYMBOL(class_uuid2dev);
EXPORT_SYMBOL(class_uuid2obd);
-EXPORT_SYMBOL(class_new_export);
-EXPORT_SYMBOL(class_destroy_export);
-EXPORT_SYMBOL(class_connect);
+EXPORT_SYMBOL(class_find_client_obd);
+EXPORT_SYMBOL(class_devices_in_group);
EXPORT_SYMBOL(class_conn2export);
+EXPORT_SYMBOL(class_exp2obd);
EXPORT_SYMBOL(class_conn2obd);
+EXPORT_SYMBOL(class_exp2cliimp);
EXPORT_SYMBOL(class_conn2cliimp);
-EXPORT_SYMBOL(class_conn2ldlmimp);
EXPORT_SYMBOL(class_disconnect);
-EXPORT_SYMBOL(class_disconnect_all);
+EXPORT_SYMBOL(class_num2obd);
+
+/* uuid.c */
EXPORT_SYMBOL(class_uuid_unparse);
+EXPORT_SYMBOL(lustre_uuid_to_peer);
+
+EXPORT_SYMBOL(class_handle_hash);
+EXPORT_SYMBOL(class_handle_unhash);
+EXPORT_SYMBOL(class_handle_hash_back);
+EXPORT_SYMBOL(class_handle2object);
+EXPORT_SYMBOL(class_handle_free_cb);
+
+/* obd_config.c */
+EXPORT_SYMBOL(class_incref);
+EXPORT_SYMBOL(class_decref);
+EXPORT_SYMBOL(class_get_profile);
+EXPORT_SYMBOL(class_del_profile);
+EXPORT_SYMBOL(class_del_profiles);
+EXPORT_SYMBOL(class_process_config);
+EXPORT_SYMBOL(class_process_proc_param);
+EXPORT_SYMBOL(class_config_parse_llog);
+EXPORT_SYMBOL(class_config_dump_llog);
+EXPORT_SYMBOL(class_attach);
+EXPORT_SYMBOL(class_setup);
+EXPORT_SYMBOL(class_cleanup);
+EXPORT_SYMBOL(class_detach);
+EXPORT_SYMBOL(class_manual_cleanup);
+
+/* mea.c */
+EXPORT_SYMBOL(mea_name2idx);
+EXPORT_SYMBOL(raw_name2idx);
+
+#define OBD_INIT_CHECK
+#ifdef OBD_INIT_CHECK
+int obd_init_checks(void)
+{
+ __u64 u64val, div64val;
+ char buf[64];
+ int len, ret = 0;
+
+ CDEBUG(D_INFO, "LPU64=%s, LPD64=%s, LPX64=%s\n", LPU64, LPD64, LPX64);
+
+ CDEBUG(D_INFO, "OBD_OBJECT_EOF = "LPX64"\n", (__u64)OBD_OBJECT_EOF);
+
+ u64val = OBD_OBJECT_EOF;
+ CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
+ if (u64val != OBD_OBJECT_EOF) {
+ CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
+ u64val, (int)sizeof(u64val));
+ ret = -EINVAL;
+ }
+ len = snprintf(buf, sizeof(buf), LPX64, u64val);
+ if (len != 18) {
+ CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
+ ret = -EINVAL;
+ }
+
+ div64val = OBD_OBJECT_EOF;
+ CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
+ if (u64val != OBD_OBJECT_EOF) {
+ CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
+ u64val, (int)sizeof(u64val));
+ ret = -EOVERFLOW;
+ }
+ if (u64val >> 8 != OBD_OBJECT_EOF >> 8) {
+ CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
+ u64val, (int)sizeof(u64val));
+ return -EOVERFLOW;
+ }
+ if (do_div(div64val, 256) != (u64val & 255)) {
+ CERROR("do_div("LPX64",256) != "LPU64"\n", u64val, u64val &255);
+ return -EOVERFLOW;
+ }
+ if (u64val >> 8 != div64val) {
+ CERROR("do_div("LPX64",256) "LPU64" != "LPU64"\n",
+ u64val, div64val, u64val >> 8);
+ return -EOVERFLOW;
+ }
+ len = snprintf(buf, sizeof(buf), LPX64, u64val);
+ if (len != 18) {
+ CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
+ ret = -EINVAL;
+ }
+ len = snprintf(buf, sizeof(buf), LPU64, u64val);
+ if (len != 20) {
+ CWARN("LPU64 wrong length! strlen(%s)=%d != 20\n", buf, len);
+ ret = -EINVAL;
+ }
+ len = snprintf(buf, sizeof(buf), LPD64, u64val);
+ if (len != 2) {
+ CWARN("LPD64 wrong length! strlen(%s)=%d != 2\n", buf, len);
+ ret = -EINVAL;
+ }
+ if ((u64val & ~CFS_PAGE_MASK) >= CFS_PAGE_SIZE) {
+ CWARN("mask failed: u64val "LPU64" >= "LPU64"\n", u64val,
+ (__u64)CFS_PAGE_SIZE);
+ ret = -EINVAL;
+ }
-EXPORT_SYMBOL(class_signal_connection_failure);
+ return ret;
+}
+#else
+#define obd_init_checks() do {} while(0)
+#endif
+
+extern cfs_spinlock_t obd_types_lock;
+extern int class_procfs_init(void);
+extern int class_procfs_clean(void);
+#ifdef __KERNEL__
static int __init init_obdclass(void)
+#else
+int init_obdclass(void)
+#endif
{
- struct obd_device *obd;
- int err;
- int i;
+ int i, err;
+#ifdef __KERNEL__
+ int lustre_register_fs(void);
+
+ for (i = CAPA_SITE_CLIENT; i < CAPA_SITE_MAX; i++)
+ CFS_INIT_LIST_HEAD(&capa_list[i]);
+#endif
- printk(KERN_INFO "OBD class driver Build Version: " BUILD_VERSION
- ", info@clusterfs.com\n");
+ LCONSOLE_INFO("OBD class driver, http://www.lustre.org/\n");
+ LCONSOLE_INFO(" Lustre Version: "LUSTRE_VERSION_STRING"\n");
+ LCONSOLE_INFO(" Build Version: "BUILD_VERSION"\n");
- sema_init(&obd_conf_sem, 1);
- INIT_LIST_HEAD(&obd_types);
+ cfs_spin_lock_init(&obd_types_lock);
+ cfs_waitq_init(&obd_race_waitq);
+ obd_zombie_impexp_init();
+#ifdef LPROCFS
+ obd_memory = lprocfs_alloc_stats(OBD_STATS_NUM,
+ LPROCFS_STATS_FLAG_NONE);
+ if (obd_memory == NULL) {
+ CERROR("kmalloc of 'obd_memory' failed\n");
+ RETURN(-ENOMEM);
+ }
- if ((err = misc_register(&obd_psdev))) {
- CERROR("cannot register %d err %d\n", OBD_MINOR, err);
+ lprocfs_counter_init(obd_memory, OBD_MEMORY_STAT,
+ LPROCFS_CNTR_AVGMINMAX,
+ "memused", "bytes");
+ lprocfs_counter_init(obd_memory, OBD_MEMORY_PAGES_STAT,
+ LPROCFS_CNTR_AVGMINMAX,
+ "pagesused", "pages");
+#endif
+ err = obd_init_checks();
+ if (err == -EOVERFLOW)
+ return err;
+
+ class_init_uuidlist();
+ err = class_handle_init();
+ if (err)
+ return err;
+
+ cfs_spin_lock_init(&obd_dev_lock);
+ CFS_INIT_LIST_HEAD(&obd_types);
+
+ err = cfs_psdev_register(&obd_psdev);
+ if (err) {
+ CERROR("cannot register %d err %d\n", OBD_DEV_MINOR, err);
return err;
}
- /* This struct is already zerod for us (static global) */
- for (i = 0, obd = obd_dev; i < MAX_OBD_DEVICES; i++, obd++)
- obd->obd_minor = i;
+ /* This struct is already zeroed for us (static global) */
+ for (i = 0; i < class_devno_max(); i++)
+ obd_devs[i] = NULL;
+
+ /* Default the dirty page cache cap to 1/2 of system memory.
+ * For clients with less memory, a larger fraction is needed
+ * for other purposes (mostly for BGL). */
+ if (cfs_num_physpages <= 512 << (20 - CFS_PAGE_SHIFT))
+ obd_max_dirty_pages = cfs_num_physpages / 4;
+ else
+ obd_max_dirty_pages = cfs_num_physpages / 2;
err = obd_init_caches();
if (err)
return err;
+#ifdef __KERNEL__
+ err = class_procfs_init();
+ if (err)
+ return err;
+#endif
- obd_sysctl_init();
+ err = lu_global_init();
+ if (err)
+ return err;
-#ifdef LPROCFS
- proc_lustre_root = proc_mkdir("lustre", proc_root_fs);
- if (!proc_lustre_root)
- printk(KERN_ERR "error registering /proc/fs/lustre\n");
-#else
- proc_lustre_root = NULL;
+#ifdef __KERNEL__
+ err = lustre_register_fs();
#endif
- return 0;
+
+ return err;
}
-static void __exit cleanup_obdclass(void)
+/* liblustre doesn't call cleanup_obdclass, apparently. we carry on in this
+ * ifdef to the end of the file to cover module and versioning goo.*/
+#ifdef __KERNEL__
+static void cleanup_obdclass(void)
{
int i;
+ int lustre_unregister_fs(void);
+ __u64 memory_leaked, pages_leaked;
+ __u64 memory_max, pages_max;
ENTRY;
- misc_deregister(&obd_psdev);
- for (i = 0; i < MAX_OBD_DEVICES; i++) {
- struct obd_device *obd = &obd_dev[i];
- if (obd->obd_type && (obd->obd_flags & OBD_SET_UP) &&
+ lustre_unregister_fs();
+
+ cfs_psdev_deregister(&obd_psdev);
+ for (i = 0; i < class_devno_max(); i++) {
+ struct obd_device *obd = class_num2obd(i);
+ if (obd && obd->obd_set_up &&
OBT(obd) && OBP(obd, detach)) {
/* XXX should this call generic detach otherwise? */
+ LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
OBP(obd, detach)(obd);
}
}
+ lu_global_fini();
obd_cleanup_caches();
obd_sysctl_clean();
- if (proc_lustre_root) {
- lprocfs_remove(proc_lustre_root);
- proc_lustre_root = NULL;
- }
+ class_procfs_clean();
+
+ class_handle_cleanup();
+ class_exit_uuidlist();
+ obd_zombie_impexp_stop();
+
+ memory_leaked = obd_memory_sum();
+ pages_leaked = obd_pages_sum();
+
+ memory_max = obd_memory_max();
+ pages_max = obd_pages_max();
+
+ lprocfs_free_stats(&obd_memory);
+ CDEBUG((memory_leaked) ? D_ERROR : D_INFO,
+ "obd_memory max: "LPU64", leaked: "LPU64"\n",
+ memory_max, memory_leaked);
+ CDEBUG((pages_leaked) ? D_ERROR : D_INFO,
+ "obd_memory_pages max: "LPU64", leaked: "LPU64"\n",
+ pages_max, pages_leaked);
- CERROR("obd mem max: %d leaked: %d\n", obd_memmax,
- atomic_read(&obd_memory));
EXIT;
}
-/* Check that we're building against the appropriate version of the Lustre
- * kernel patch */
-#include <linux/lustre_version.h>
-#define LUSTRE_SOURCE_VERSION 10
-#if (LUSTRE_KERNEL_VERSION < LUSTRE_SOURCE_VERSION)
-# error Cannot continue: Your Lustre kernel patch is older than the sources
-#elif (LUSTRE_KERNEL_VERSION > 11)
-# error Cannot continue: Your Lustre sources are older than the kernel patch
-#endif
-
-MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
+MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
MODULE_DESCRIPTION("Lustre Class Driver Build Version: " BUILD_VERSION);
MODULE_LICENSE("GPL");
-module_init(init_obdclass);
-module_exit(cleanup_obdclass);
+cfs_module(obdclass, LUSTRE_VERSION_STRING, init_obdclass, cleanup_obdclass);
+#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff