* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*/
/*
/**************** config llog ********************/
-/* Get a config log from the MGS and process it.
- This func is called for both clients and servers.
- Continue to process new statements appended to the logs
- (whenever the config lock is revoked) until lustre_end_log
- is called. */
+/** Get a config log from the MGS and process it.
+ * This func is called for both clients and servers.
+ * Continue to process new statements appended to the logs
+ * (whenever the config lock is revoked) until lustre_end_log
+ * is called.
+ * @param sb The superblock is used by the MGC to write to the local copy of
+ * the config log
+ * @param logname The name of the llog to replicate from the MGS
+ * @param cfg Since the same mgc may be used to follow multiple config logs
+ * (e.g. ost1, ost2, client), the config_llog_instance keeps the state for
+ * this log, and is added to the mgc's list of logs to follow.
+ */
int lustre_process_log(struct super_block *sb, char *logname,
struct config_llog_instance *cfg)
{
/**************** obd start *******************/
+/** lustre_cfg_bufs are a holdover from 1.4; we can still set these up from
+ * lctl (and do for echo cli/srv.
+ */
int do_lcfg(char *cfgname, lnet_nid_t nid, int cmd,
char *s1, char *s2, char *s3, char *s4)
{
return(rc);
}
+/** Call class_attach and class_setup. These methods in turn call
+ * obd type-specific methods.
+ */
static int lustre_start_simple(char *obdname, char *type, char *uuid,
char *s1, char *s2)
{
if (data == NULL)
GOTO(out, rc = -ENOMEM);
data->ocd_connect_flags = OBD_CONNECT_VERSION | OBD_CONNECT_FID |
- OBD_CONNECT_AT;
+ OBD_CONNECT_AT | OBD_CONNECT_FULL20;
data->ocd_version = LUSTRE_VERSION_CODE;
rc = obd_connect(NULL, &exp, obd, &(obd->obd_uuid), data, NULL);
OBD_FREE_PTR(data);
struct lustre_sb_info *lsi = s2lsi(sb);
struct lustre_disk_data *ldd = lsi->lsi_ldd;
lnet_process_id_t id;
- int i = 0;
+ int i = 0;
ENTRY;
if (!(lsi->lsi_flags & LSI_SERVER))
while (LNetGetId(i++, &id) != -ENOENT) {
if (LNET_NETTYP(LNET_NIDNET(id.nid)) == LOLND)
continue;
+
+ if (class_find_param(ldd->ldd_params,
+ PARAM_NETWORK, NULL) == 0 &&
+ !class_match_net(ldd->ldd_params, id.nid)) {
+ /* can't match specified network */
+ continue;
+ }
+
mti->mti_nids[mti->mti_nid_count] = id.nid;
mti->mti_nid_count++;
if (mti->mti_nid_count >= MTI_NIDS_MAX) {
RETURN(rc);
}
-/* Start targets */
+/** Start server targets: MDTs and OSTs
+ */
static int server_start_targets(struct super_block *sb, struct vfsmount *mnt)
{
struct obd_device *obd;
cfs_mutex_up(&server_start_lock);
}
- /* Set the mgc fs to our server disk. This allows the MGC
- to read and write configs locally. */
+ /* Set the mgc fs to our server disk. This allows the MGC to
+ * read and write configs locally, in case it can't talk to the MGS. */
rc = server_mgc_set_fs(lsi->lsi_mgc, sb);
if (rc)
RETURN(rc);
/*************** server mount ******************/
-/* Kernel mount using mount options in MOUNT_DATA_FILE */
+/** Kernel mount using mount options in MOUNT_DATA_FILE.
+ * Since this file lives on the disk, we pre-mount using a common
+ * type, read the file, then re-mount using the type specified in the
+ * file.
+ */
static struct vfsmount *server_kernel_mount(struct super_block *sb)
{
struct lvfs_run_ctxt mount_ctxt;
RETURN(ERR_PTR(rc));
}
-/* Wait here forever until the mount refcount is 0 before completing umount,
+/** Wait here forever until the mount refcount is 0 before completing umount,
* else we risk dereferencing a null pointer.
* LNET may take e.g. 165s before killing zombies.
*/
}
}
+/** Start the shutdown of servers at umount.
+ */
static void server_put_super(struct super_block *sb)
{
struct lustre_sb_info *lsi = s2lsi(sb);
EXIT;
}
+/** Called only for 'umount -f'
+ */
#ifdef HAVE_UMOUNTBEGIN_VFSMOUNT
static void server_umount_begin(struct vfsmount *vfsmnt, int flags)
{
RETURN(0);
}
+/** The operations we support directly on the superblock:
+ * mount, umount, and df.
+ */
static struct super_operations server_ops =
{
.put_super = server_put_super,
RETURN(0);
}
+/** Fill in the superblock info for a Lustre server.
+ * Mount the device with the correct options.
+ * Read the on-disk config file.
+ * Start the services.
+ */
static int server_fill_super(struct super_block *sb)
{
struct lustre_sb_info *lsi = s2lsi(sb);
GOTO(out_mnt, rc);
}
+ /* Start MGC before servers */
rc = lustre_start_mgc(sb);
if (rc)
GOTO(out_mnt, rc);
return 0;
}
-/* mount -v -t lustre uml1:uml2:/lustre-client /mnt/lustre */
+/** Parse mount line options
+ * e.g. mount -v -t lustre -o abort_recov uml1:uml2:/lustre-client /mnt/lustre
+ * dev is passed as device=uml1:/lustre by mount.lustre
+ */
static int lmd_parse(char *options, struct lustre_mount_data *lmd)
{
char *s1, *s2, *devname = NULL;
}
-/* Common mount */
+/** This is the entry point for the mount call into Lustre.
+ * This is called when a server or client is mounted,
+ * and this is where we start setting things up.
+ * @param data Mount options (e.g. -o flock,abort_recov)
+ */
int lustre_fill_super(struct super_block *sb, void *data, int silent)
{
struct lustre_mount_data *lmd;
kill_anon_super(sb);
}
+/** Register the "lustre" fs type
+ */
struct file_system_type lustre_fs_type = {
.owner = THIS_MODULE,
.name = "lustre",
git://git.whamcloud.com / fs / lustre-release.git / blobdiff