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/*
Copyright (c) 2008-2009 Z RESEARCH, Inc. <http://www.zresearch.com>
This file is part of GlusterFS.
GlusterFS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3 of the License,
or (at your option) any later version.
GlusterFS 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
along with this program. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef _CONFIG_H
#define _CONFIG_H
#include "config.h"
#endif
/* TODO: add NS locking */
#include "dht-common.c"
/* TODO:
- use volumename in xattr instead of "dht"
- use NS locks
- handle all cases in self heal layout reconstruction
- complete linkfile selfheal
*/
int
notify (xlator_t *this, int event, void *data, ...)
{
int ret = -1;
ret = dht_notify (this, event, data);
return ret;
}
void
fini (xlator_t *this)
{
int i = 0;
dht_conf_t *conf = NULL;
conf = this->private;
if (conf) {
if (conf->file_layouts) {
for (i = 0; i < conf->subvolume_cnt; i++) {
FREE (conf->file_layouts[i]);
}
FREE (conf->file_layouts);
}
if (conf->default_dir_layout)
FREE (conf->default_dir_layout);
if (conf->subvolumes)
FREE (conf->subvolumes);
if (conf->subvolume_status)
FREE (conf->subvolume_status);
FREE (conf);
}
return;
}
int
init (xlator_t *this)
{
dht_conf_t *conf = NULL;
char *temp_str = NULL;
int ret = -1;
int i = 0;
uint32_t temp_free_disk = 0;
if (!this->children) {
gf_log (this->name, GF_LOG_CRITICAL,
"Distribute needs more than one subvolume");
return -1;
}
if (!this->parents) {
gf_log (this->name, GF_LOG_WARNING,
"dangling volume. check volfile");
}
conf = CALLOC (1, sizeof (*conf));
if (!conf) {
gf_log (this->name, GF_LOG_ERROR,
"Out of memory");
goto err;
}
conf->search_unhashed = 0;
if (dict_get_str (this->options, "lookup-unhashed", &temp_str) == 0) {
gf_string2boolean (temp_str, &conf->search_unhashed);
}
conf->unhashed_sticky_bit = 0;
if (dict_get_str (this->options, "unhashed-sticky-bit",
&temp_str) == 0) {
gf_string2boolean (temp_str, &conf->unhashed_sticky_bit);
}
conf->disk_unit = 'p';
conf->min_free_disk = 10;
if (dict_get_str (this->options, "min-free-disk", &temp_str) == 0) {
if (gf_string2percent (temp_str, &temp_free_disk) == 0) {
if (temp_free_disk > 100) {
gf_string2bytesize (temp_str,
&conf->min_free_disk);
conf->disk_unit = 'b';
} else {
conf->min_free_disk = (uint64_t)temp_free_disk;
}
} else {
gf_string2bytesize (temp_str, &conf->min_free_disk);
conf->disk_unit = 'b';
}
}
ret = dht_init_subvolumes (this, conf);
if (ret == -1) {
goto err;
}
ret = dht_layouts_init (this, conf);
if (ret == -1) {
goto err;
}
conf->du_stats = CALLOC (conf->subvolume_cnt, sizeof (dht_du_t));
if (!conf->du_stats) {
gf_log (this->name, GF_LOG_ERROR,
"Out of memory");
goto err;
}
LOCK_INIT (&conf->subvolume_lock);
conf->gen = 1;
this->private = conf;
return 0;
err:
if (conf) {
if (conf->file_layouts) {
for (i = 0; i < conf->subvolume_cnt; i++) {
FREE (conf->file_layouts[i]);
}
FREE (conf->file_layouts);
}
if (conf->default_dir_layout)
FREE (conf->default_dir_layout);
if (conf->subvolumes)
FREE (conf->subvolumes);
if (conf->subvolume_status)
FREE (conf->subvolume_status);
if (conf->du_stats)
FREE (conf->du_stats);
FREE (conf);
}
return -1;
}
struct xlator_fops fops = {
.lookup = dht_lookup,
.mknod = dht_mknod,
.create = dht_create,
.stat = dht_stat,
.chmod = dht_chmod,
.chown = dht_chown,
.fchown = dht_fchown,
.fchmod = dht_fchmod,
.fstat = dht_fstat,
.utimens = dht_utimens,
.truncate = dht_truncate,
.ftruncate = dht_ftruncate,
.access = dht_access,
.readlink = dht_readlink,
.setxattr = dht_setxattr,
.getxattr = dht_getxattr,
.removexattr = dht_removexattr,
.open = dht_open,
.readv = dht_readv,
.writev = dht_writev,
.flush = dht_flush,
.fsync = dht_fsync,
.statfs = dht_statfs,
.lk = dht_lk,
.opendir = dht_opendir,
.readdir = dht_readdir,
.fsyncdir = dht_fsyncdir,
.symlink = dht_symlink,
.unlink = dht_unlink,
.link = dht_link,
.mkdir = dht_mkdir,
.rmdir = dht_rmdir,
.rename = dht_rename,
.inodelk = dht_inodelk,
.finodelk = dht_finodelk,
.entrylk = dht_entrylk,
.fentrylk = dht_fentrylk,
.xattrop = dht_xattrop,
.fxattrop = dht_fxattrop,
#if 0
.setdents = dht_setdents,
.getdents = dht_getdents,
.checksum = dht_checksum,
#endif
};
struct xlator_mops mops = {
};
struct xlator_cbks cbks = {
// .release = dht_release,
// .releasedir = dht_releasedir,
.forget = dht_forget
};
struct volume_options options[] = {
{ .key = {"lookup-unhashed"},
.type = GF_OPTION_TYPE_BOOL
},
{ .key = {"min-free-disk"},
.type = GF_OPTION_TYPE_PERCENT_OR_SIZET,
},
{ .key = {NULL} },
};
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