diff options
Diffstat (limited to 'xlators/cluster/dht/src/dht.c')
| -rw-r--r-- | xlators/cluster/dht/src/dht.c | 515 |
1 files changed, 108 insertions, 407 deletions
diff --git a/xlators/cluster/dht/src/dht.c b/xlators/cluster/dht/src/dht.c index d947ae8145b..53de8292704 100644 --- a/xlators/cluster/dht/src/dht.c +++ b/xlators/cluster/dht/src/dht.c @@ -1,422 +1,123 @@ /* - Copyright (c) 2008-2009 Gluster, Inc. <http://www.gluster.com> - This file is part of GlusterFS. + Copyright (c) 2008-2012 Red Hat, Inc. <http://www.redhat.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 "statedump.h" -#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 + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. */ - -void -dht_layout_dump (dht_layout_t *layout, const char *prefix) -{ - - char key[GF_DUMP_MAX_BUF_LEN]; - int i = 0; - - if (!layout) - return; - - gf_proc_dump_build_key(key, prefix, "cnt"); - gf_proc_dump_write(key, "%d", layout->cnt); - gf_proc_dump_build_key(key, prefix, "preset"); - gf_proc_dump_write(key, "%d", layout->preset); - gf_proc_dump_build_key(key, prefix, "gen"); - gf_proc_dump_write(key, "%d", layout->gen); - gf_proc_dump_build_key(key, prefix, "type"); - gf_proc_dump_write(key, "%d", layout->type); - - for (i = 0; i < layout->cnt; i++) { - gf_proc_dump_build_key(key, prefix,"list[%d].err", i); - gf_proc_dump_write(key, "%d", layout->list[i].err); - gf_proc_dump_build_key(key, prefix,"list[%d].start", i); - gf_proc_dump_write(key, "%u", layout->list[i].start); - gf_proc_dump_build_key(key, prefix,"list[%d].stop", i); - gf_proc_dump_write(key, "%u", layout->list[i].stop); - if (layout->list[i].xlator) { - gf_proc_dump_build_key(key, prefix, - "list[%d].xlator.type", i); - gf_proc_dump_write(key, "%s", - layout->list[i].xlator->type); - gf_proc_dump_build_key(key, prefix, - "list[%d].xlator.name", i); - gf_proc_dump_write(key, "%s", - layout->list[i].xlator->name); - } - } -} - - -int32_t -dht_priv_dump (xlator_t *this) -{ - char key_prefix[GF_DUMP_MAX_BUF_LEN]; - char key[GF_DUMP_MAX_BUF_LEN]; - int i = 0; - dht_conf_t *conf = NULL; - int ret = 0; - - if (!this) - return -1; - - conf = this->private; - - if (!conf) - return -1; - - ret = TRY_LOCK(&conf->subvolume_lock); - - if (ret != 0) { - gf_log("", GF_LOG_WARNING, "Unable to lock dht subvolume %s", - this->name); - return ret; - } - - gf_proc_dump_add_section("xlator.cluster.dht.%s.priv", this->name); - gf_proc_dump_build_key(key_prefix,"xlator.cluster.dht","%s.priv", - this->name); - gf_proc_dump_build_key(key, key_prefix, "subvolume_cnt"); - gf_proc_dump_write(key,"%d", conf->subvolume_cnt); - for (i = 0; i < conf->subvolume_cnt; i++) { - gf_proc_dump_build_key(key, key_prefix, "subvolumes[%d]", i); - gf_proc_dump_write(key, "%s.%s", conf->subvolumes[i]->type, - conf->subvolumes[i]->name); - if (conf->file_layouts && conf->file_layouts[i]){ - gf_proc_dump_build_key(key, key_prefix, - "file_layouts[%d]",i); - dht_layout_dump(conf->file_layouts[i], key); - } - if (conf->dir_layouts && conf->dir_layouts[i]) { - gf_proc_dump_build_key(key, key_prefix, - "dir_layouts[%d]",i); - dht_layout_dump(conf->dir_layouts[i], key); - } - if (conf->subvolume_status) { - gf_proc_dump_build_key(key, key_prefix, - "subvolume_status[%d]", i); - gf_proc_dump_write(key, "%d", - (int)conf->subvolume_status[i]); - } - - } - - gf_proc_dump_build_key(key, key_prefix,"default_dir_layout"); - dht_layout_dump(conf->default_dir_layout, key); - - gf_proc_dump_build_key(key, key_prefix, "search_unhashed"); - gf_proc_dump_write(key, "%d", conf->search_unhashed); - gf_proc_dump_build_key(key, key_prefix, "gen"); - gf_proc_dump_write(key, "%d", conf->gen); - gf_proc_dump_build_key(key, key_prefix, "min_free_disk"); - gf_proc_dump_write(key, "%lu", conf->min_free_disk); - gf_proc_dump_build_key(key, key_prefix, "disk_unit"); - gf_proc_dump_write(key, "%c", conf->disk_unit); - gf_proc_dump_build_key(key, key_prefix, "refresh_interval"); - gf_proc_dump_write(key, "%d", conf->refresh_interval); - gf_proc_dump_build_key(key, key_prefix, "unhashed_sticky_bit"); - gf_proc_dump_write(key, "%d", conf->unhashed_sticky_bit); - if (conf ->du_stats) { - gf_proc_dump_build_key(key, key_prefix, - "du_stats.avail_percent"); - gf_proc_dump_write(key, "%lf", conf->du_stats->avail_percent); - gf_proc_dump_build_key(key, key_prefix, - "du_stats.avail_space"); - gf_proc_dump_write(key, "%lu", conf->du_stats->avail_space); - gf_proc_dump_build_key(key, key_prefix, - "du_stats.log"); - gf_proc_dump_write(key, "%lu", conf->du_stats->log); - } - gf_proc_dump_build_key(key, key_prefix, "last_stat_fetch"); - gf_proc_dump_write(key, "%s", ctime(&conf->last_stat_fetch.tv_sec)); - - UNLOCK(&conf->subvolume_lock); - - return 0; -} - -int32_t -dht_inodectx_dump (xlator_t *this, inode_t *inode) -{ - int ret = -1; - char key_prefix[GF_DUMP_MAX_BUF_LEN]; - dht_layout_t *layout = NULL; - uint64_t tmp_layout = 0; - - if (!inode) - return -1; - - ret = inode_ctx_get (inode, this, &tmp_layout); - - if (ret != 0) - return ret; - - layout = (dht_layout_t *)(long)tmp_layout; - - if (!layout) - return -1; - - gf_proc_dump_build_key(key_prefix, "xlator.cluster.dht", - "%s.inode.%ld", this->name, inode->ino); - dht_layout_dump(layout, key_prefix); - - return 0; -} - -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); - LOCK_INIT (&conf->layout_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, - .fstat = dht_fstat, - .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, - .readdirp = dht_readdirp, - .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, - .setattr = dht_setattr, - .fsetattr = dht_fsetattr, -#if 0 - .setdents = dht_setdents, - .getdents = dht_getdents, - .checksum = dht_checksum, -#endif +#include "dht-common.h" + +struct xlator_fops dht_pt_fops = { + /* we need to keep mkdir to make sure we + have layout on new directory */ + .mkdir = dht_pt_mkdir, + .getxattr = dht_pt_getxattr, + .fgetxattr = dht_pt_fgetxattr, + + /* required to trace fop properly in changelog */ + .rename = dht_pt_rename, + + /* FIXME: commenting the '.lookup()' below made some of + the failing tests to pass. I would remove the below + line, but keeping it here as a reminder for people + to check for issues if they find concerns with DHT + pass-through logic */ + /* + .lookup = dht_lookup, + .readdir = dht_readdir, + .readdirp = dht_readdirp, + */ + /* Keeping above as commented, mainly to support the + usecase of a gluster volume getting to 1x(anytype), + due to remove-brick (shrinking) exercise. In that case, + we would need above fops to be available, so we can + handle the case of dangling linkto files (if any) */ }; - -struct xlator_mops mops = { +struct xlator_fops fops = { + .ipc = dht_ipc, + .lookup = dht_lookup, + .mknod = dht_mknod, + .create = dht_create, + + .open = dht_open, + .statfs = dht_statfs, + .opendir = dht_opendir, + .readdir = dht_readdir, + .readdirp = dht_readdirp, + .fsyncdir = dht_fsyncdir, + .symlink = dht_symlink, + .unlink = dht_unlink, + .link = dht_link, + .mkdir = dht_mkdir, + .rmdir = dht_rmdir, + .rename = dht_rename, + .entrylk = dht_entrylk, + .fentrylk = dht_fentrylk, + + /* Inode read operations */ + .stat = dht_stat, + .fstat = dht_fstat, + .access = dht_access, + .readlink = dht_readlink, + .getxattr = dht_getxattr, + .fgetxattr = dht_fgetxattr, + .readv = dht_readv, + .flush = dht_flush, + .fsync = dht_fsync, + .inodelk = dht_inodelk, + .finodelk = dht_finodelk, + .lk = dht_lk, + .lease = dht_lease, + + /* Inode write operations */ + .fremovexattr = dht_fremovexattr, + .removexattr = dht_removexattr, + .setxattr = dht_setxattr, + .fsetxattr = dht_fsetxattr, + .truncate = dht_truncate, + .ftruncate = dht_ftruncate, + .writev = dht_writev, + .xattrop = dht_xattrop, + .fxattrop = dht_fxattrop, + .setattr = dht_setattr, + .fsetattr = dht_fsetattr, + .fallocate = dht_fallocate, + .discard = dht_discard, + .zerofill = dht_zerofill, }; struct xlator_dumpops dumpops = { - .priv = dht_priv_dump, - .inodectx = dht_inodectx_dump, + .priv = dht_priv_dump, + .inodectx = dht_inodectx_dump, }; - struct xlator_cbks cbks = { -// .release = dht_release, -// .releasedir = dht_releasedir, - .forget = dht_forget + .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 = {"unhashed-sticky-bit"}, - .type = GF_OPTION_TYPE_BOOL - }, - { .key = {NULL} }, +extern int32_t +mem_acct_init(xlator_t *this); + +extern struct volume_options dht_options[]; + +xlator_api_t xlator_api = { + .init = dht_init, + .fini = dht_fini, + .notify = dht_notify, + .reconfigure = dht_reconfigure, + .mem_acct_init = mem_acct_init, + .op_version = {1}, /* Present from the initial version */ + .dumpops = &dumpops, + .fops = &fops, + .cbks = &cbks, + .options = dht_options, + .identifier = "distribute", + .pass_through_fops = &dht_pt_fops, + .category = GF_MAINTAINED, }; |