diff options
Diffstat (limited to 'xlators/cluster/afr/src/afr-self-heal.h')
| -rw-r--r-- | xlators/cluster/afr/src/afr-self-heal.h | 389 |
1 files changed, 356 insertions, 33 deletions
diff --git a/xlators/cluster/afr/src/afr-self-heal.h b/xlators/cluster/afr/src/afr-self-heal.h index b10ae3fc037..48e6dbcfb18 100644 --- a/xlators/cluster/afr/src/afr-self-heal.h +++ b/xlators/cluster/afr/src/afr-self-heal.h @@ -1,54 +1,377 @@ /* - Copyright (c) 2008-2010 Gluster, Inc. <http://www.gluster.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 Affero 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 - Affero General Public License for more details. - - You should have received a copy of the GNU Affero General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. + Copyright (c) 2013 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + + 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. */ -#ifndef __AFR_SELF_HEAL_H__ -#define __AFR_SELF_HEAL_H__ +#ifndef _AFR_SELFHEAL_H +#define _AFR_SELFHEAL_H + +/* Perform fop on all UP subvolumes and wait for all callbacks to return */ + +#define AFR_ONALL(frame, rfn, fop, args...) \ + do { \ + afr_local_t *__local = frame->local; \ + afr_private_t *__priv = frame->this->private; \ + int __i = 0, __count = 0; \ + unsigned char *__child_up = alloca(__priv->child_count); \ + \ + memcpy(__child_up, __priv->child_up, \ + sizeof(*__child_up) * __priv->child_count); \ + __count = AFR_COUNT(__child_up, __priv->child_count); \ + \ + __local->barrier.waitfor = __count; \ + afr_local_replies_wipe(__local, __priv); \ + \ + for (__i = 0; __i < __priv->child_count; __i++) { \ + if (!__child_up[__i]) \ + continue; \ + STACK_WIND_COOKIE(frame, rfn, (void *)(long)__i, \ + __priv->children[__i], \ + __priv->children[__i]->fops->fop, args); \ + } \ + syncbarrier_wait(&__local->barrier, __count); \ + } while (0) + +/* Perform fop on all subvolumes represented by list[] array and wait + for all callbacks to return */ + +#define AFR_ONLIST(list, frame, rfn, fop, args...) \ + do { \ + afr_local_t *__local = frame->local; \ + afr_private_t *__priv = frame->this->private; \ + int __i = 0; \ + int __count = 0; \ + unsigned char *__list = alloca(__priv->child_count); \ + \ + memcpy(__list, list, sizeof(*__list) * __priv->child_count); \ + __count = AFR_COUNT(__list, __priv->child_count); \ + __local->barrier.waitfor = __count; \ + afr_local_replies_wipe(__local, __priv); \ + \ + for (__i = 0; __i < __priv->child_count; __i++) { \ + if (!__list[__i]) \ + continue; \ + STACK_WIND_COOKIE(frame, rfn, (void *)(long)__i, \ + __priv->children[__i], \ + __priv->children[__i]->fops->fop, args); \ + } \ + syncbarrier_wait(&__local->barrier, __count); \ + } while (0) + +#define AFR_SEQ(frame, rfn, fop, args...) \ + do { \ + afr_local_t *__local = frame->local; \ + afr_private_t *__priv = frame->this->private; \ + int __i = 0; \ + \ + afr_local_replies_wipe(__local, __priv); \ + \ + for (__i = 0; __i < __priv->child_count; __i++) { \ + if (!__priv->child_up[__i]) \ + continue; \ + STACK_WIND_COOKIE(frame, rfn, (void *)(long)__i, \ + __priv->children[__i], \ + __priv->children[__i]->fops->fop, args); \ + syncbarrier_wait(&__local->barrier, 1); \ + } \ + } while (0) + +#define ALLOC_MATRIX(n, type) \ + ({ \ + int __i; \ + type **__ptr = alloca(n * sizeof(type *)); \ + \ + for (__i = 0; __i < n; __i++) \ + __ptr[__i] = alloca0(n * sizeof(type)); \ + __ptr; \ + }) + +#define IA_EQUAL(f, s, field) \ + (memcmp(&(f.ia_##field), &(s.ia_##field), sizeof(s.ia_##field)) == 0) + +#define SBRAIN_HEAL_NO_GO_MSG \ + "Failed to obtain replies from all bricks of " \ + "the replica (are they up?). Cannot resolve split-brain." +#define SFILE_NOT_IN_SPLIT_BRAIN "File not in split-brain" +#define SNO_BIGGER_FILE "No bigger file" +#define SNO_DIFF_IN_MTIME "No difference in mtime" +#define SUSE_SOURCE_BRICK_TO_HEAL \ + "Use source-brick option to heal metadata" \ + " split-brain" +#define SINVALID_BRICK_NAME "Invalid brick name" +#define SBRICK_IS_NOT_UP "Brick is not up" +#define SBRICK_NOT_CONNECTED "Brick is not connected" +#define SLESS_THAN2_BRICKS_in_REP "< 2 bricks in replica are up" +#define SBRICK_IS_REMOTE "Brick is remote" +#define SSTARTED_SELF_HEAL "Started self-heal" +#define SOP_NOT_SUPPORTED "Operation Not Supported" +#define SFILE_NOT_UNDER_DATA \ + "The file is not under data or metadata " \ + "split-brain" +#define SFILE_NOT_IN_SPLIT_BRAIN "File not in split-brain" +#define SALL_BRICKS_UP_TO_RESOLVE \ + "All the bricks should be up to resolve the" \ + " gfid split brain" +#define SERROR_GETTING_SRC_BRICK "Error getting the source brick" +int +afr_selfheal(xlator_t *this, uuid_t gfid); + +gf_boolean_t +afr_throttled_selfheal(call_frame_t *frame, xlator_t *this); + +int +afr_selfheal_name(xlator_t *this, uuid_t gfid, const char *name, void *gfid_req, + dict_t *xdata); + +int +afr_selfheal_data(call_frame_t *frame, xlator_t *this, fd_t *fd); + +int +afr_selfheal_metadata(call_frame_t *frame, xlator_t *this, inode_t *inode); + +int +afr_selfheal_entry(call_frame_t *frame, xlator_t *this, inode_t *inode); + +int +afr_lookup_and_heal_gfid(xlator_t *this, inode_t *parent, const char *name, + inode_t *inode, struct afr_reply *replies, int source, + unsigned char *sources, void *gfid, int *gfid_idx); + +int +afr_selfheal_inodelk(call_frame_t *frame, xlator_t *this, inode_t *inode, + char *dom, off_t off, size_t size, + unsigned char *locked_on); + +int +afr_selfheal_tryinodelk(call_frame_t *frame, xlator_t *this, inode_t *inode, + char *dom, off_t off, size_t size, + unsigned char *locked_on); + +int +afr_selfheal_tie_breaker_inodelk(call_frame_t *frame, xlator_t *this, + inode_t *inode, char *dom, off_t off, + size_t size, unsigned char *locked_on); + +int +afr_selfheal_uninodelk(call_frame_t *frame, xlator_t *this, inode_t *inode, + char *dom, off_t off, size_t size, + const unsigned char *locked_on); + +int +afr_selfheal_entrylk(call_frame_t *frame, xlator_t *this, inode_t *inode, + char *dom, const char *name, unsigned char *locked_on); + +int +afr_selfheal_tryentrylk(call_frame_t *frame, xlator_t *this, inode_t *inode, + char *dom, const char *name, unsigned char *locked_on); + +int +afr_selfheal_tie_breaker_entrylk(call_frame_t *frame, xlator_t *this, + inode_t *inode, char *dom, const char *name, + unsigned char *locked_on); + +int +afr_selfheal_unentrylk(call_frame_t *frame, xlator_t *this, inode_t *inode, + char *dom, const char *name, unsigned char *locked_on, + dict_t *xdata); + +int +afr_selfheal_unlocked_discover(call_frame_t *frame, inode_t *inode, uuid_t gfid, + struct afr_reply *replies); + +int +afr_selfheal_unlocked_discover_on(call_frame_t *frame, inode_t *inode, + uuid_t gfid, struct afr_reply *replies, + unsigned char *discover_on, dict_t *dict); +inode_t * +afr_selfheal_unlocked_lookup_on(call_frame_t *frame, inode_t *parent, + const char *name, struct afr_reply *replies, + unsigned char *lookup_on, dict_t *xattr); + +int +afr_selfheal_find_direction(call_frame_t *frame, xlator_t *this, + struct afr_reply *replies, + afr_transaction_type type, unsigned char *locked_on, + unsigned char *sources, unsigned char *sinks, + uint64_t *witness, unsigned char *flag); +int +afr_selfheal_fill_matrix(xlator_t *this, int **matrix, int subvol, int idx, + dict_t *xdata); + +int +afr_selfheal_extract_xattr(xlator_t *this, struct afr_reply *replies, + afr_transaction_type type, int *dirty, int **matrix); + +int +afr_sh_generic_fop_cbk(call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, struct iatt *pre, + struct iatt *post, dict_t *xdata); + +int +afr_selfheal_restore_time(call_frame_t *frame, xlator_t *this, inode_t *inode, + int source, unsigned char *healed_sinks, + struct afr_reply *replies); +int +afr_selfheal_undo_pending(call_frame_t *frame, xlator_t *this, inode_t *inode, + unsigned char *sources, unsigned char *sinks, + unsigned char *healed_sinks, + unsigned char *undid_pending, + afr_transaction_type type, struct afr_reply *replies, + unsigned char *locked_on); + +int +afr_selfheal_recreate_entry(call_frame_t *frame, int dst, int source, + unsigned char *sources, inode_t *dir, + const char *name, inode_t *inode, + struct afr_reply *replies); + +int +afr_selfheal_post_op(call_frame_t *frame, xlator_t *this, inode_t *inode, + int subvol, dict_t *xattr, dict_t *xdata); + +call_frame_t * +afr_frame_create(xlator_t *this, int32_t *op_errno); + +inode_t * +afr_inode_find(xlator_t *this, uuid_t gfid); + +int +afr_selfheal_discover_cbk(call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, inode_t *inode, + struct iatt *buf, dict_t *xdata, struct iatt *parbuf); +void +afr_reply_copy(struct afr_reply *dst, struct afr_reply *src); + +void +afr_replies_copy(struct afr_reply *dst, struct afr_reply *src, int count); + +int +afr_selfheal_newentry_mark(call_frame_t *frame, xlator_t *this, inode_t *inode, + int source, struct afr_reply *replies, + unsigned char *sources, unsigned char *newentry); + +unsigned int +afr_success_count(struct afr_reply *replies, unsigned int count); -#include <sys/stat.h> +void +afr_log_selfheal(uuid_t gfid, xlator_t *this, int ret, char *type, int source, + unsigned char *sources, unsigned char *healed_sinks); -#define FILETYPE_DIFFERS(buf1,buf2) ((buf1)->ia_type != (buf2)->ia_type) -#define PERMISSION_DIFFERS(buf1,buf2) (st_mode_from_ia ((buf1)->ia_prot, (buf1)->ia_type) != st_mode_from_ia ((buf2)->ia_prot, (buf2)->ia_type)) -#define OWNERSHIP_DIFFERS(buf1,buf2) (((buf1)->ia_uid != (buf2)->ia_uid) || ((buf1)->ia_gid != (buf2)->ia_gid)) -#define SIZE_DIFFERS(buf1,buf2) ((buf1)->ia_size != (buf2)->ia_size) +void +afr_mark_largest_file_as_source(xlator_t *this, unsigned char *sources, + struct afr_reply *replies); +void +afr_mark_active_sinks(xlator_t *this, unsigned char *sources, + unsigned char *locked_on, unsigned char *sinks); -#define SIZE_GREATER(buf1,buf2) ((buf1)->ia_size > (buf2)->ia_size) +gf_boolean_t +afr_dict_contains_heal_op(call_frame_t *frame); +gf_boolean_t +afr_can_decide_split_brain_source_sinks(struct afr_reply *replies, + int child_count); int -afr_sh_has_metadata_pending (dict_t *xattr, int child_count, xlator_t *this); +afr_mark_split_brain_source_sinks( + call_frame_t *frame, xlator_t *this, inode_t *inode, unsigned char *sources, + unsigned char *sinks, unsigned char *healed_sinks, unsigned char *locked_on, + struct afr_reply *replies, afr_transaction_type type); + +int +afr_sh_get_fav_by_policy(xlator_t *this, struct afr_reply *replies, + inode_t *inode, char **policy_str); + int -afr_sh_has_entry_pending (dict_t *xattr, int child_count, xlator_t *this); +_afr_fav_child_reset_sink_xattrs(call_frame_t *frame, xlator_t *this, + inode_t *inode, int source, + unsigned char *healed_sinks, + unsigned char *undid_pending, + afr_transaction_type type, + unsigned char *locked_on, + struct afr_reply *replies); + int -afr_sh_has_data_pending (dict_t *xattr, int child_count, xlator_t *this); +afr_get_child_index_from_name(xlator_t *this, char *name); + +gf_boolean_t +afr_does_witness_exist(xlator_t *this, uint64_t *witness); int -afr_self_heal_entry (call_frame_t *frame, xlator_t *this); +__afr_selfheal_data_prepare(call_frame_t *frame, xlator_t *this, inode_t *inode, + unsigned char *locked_on, unsigned char *sources, + unsigned char *sinks, unsigned char *healed_sinks, + unsigned char *undid_pending, + struct afr_reply *replies, unsigned char *flag); int -afr_self_heal_data (call_frame_t *frame, xlator_t *this); +__afr_selfheal_metadata_prepare(call_frame_t *frame, xlator_t *this, + inode_t *inode, unsigned char *locked_on, + unsigned char *sources, unsigned char *sinks, + unsigned char *healed_sinks, + unsigned char *undid_pending, + struct afr_reply *replies, unsigned char *flag); +int +__afr_selfheal_entry_prepare(call_frame_t *frame, xlator_t *this, + inode_t *inode, unsigned char *locked_on, + unsigned char *sources, unsigned char *sinks, + unsigned char *healed_sinks, + struct afr_reply *replies, int *source_p, + unsigned char *flag); int -afr_self_heal_metadata (call_frame_t *frame, xlator_t *this); +afr_selfheal_unlocked_inspect(call_frame_t *frame, xlator_t *this, uuid_t gfid, + inode_t **link_inode, gf_boolean_t *data_selfheal, + gf_boolean_t *metadata_selfheal, + gf_boolean_t *entry_selfheal, + struct afr_reply *replies); int -afr_self_heal_get_source (xlator_t *this, afr_local_t *local, dict_t **xattr); +afr_selfheal_do(call_frame_t *frame, xlator_t *this, uuid_t gfid); + +int +afr_selfheal_lock_cbk(call_frame_t *frame, void *cookie, xlator_t *this, + int op_ret, int op_errno, dict_t *xdata); + +int +afr_locked_fill(call_frame_t *frame, xlator_t *this, unsigned char *locked_on); +int +afr_choose_source_by_policy(afr_private_t *priv, unsigned char *sources, + afr_transaction_type type); int -afr_self_heal (call_frame_t *frame, xlator_t *this); +afr_selfheal_metadata_by_stbuf(xlator_t *this, struct iatt *stbuf); -#endif /* __AFR_SELF_HEAL_H__ */ +int +afr_sh_fav_by_size(xlator_t *this, struct afr_reply *replies, inode_t *inode); +int +afr_sh_fav_by_mtime(xlator_t *this, struct afr_reply *replies, inode_t *inode); +int +afr_sh_fav_by_ctime(xlator_t *this, struct afr_reply *replies, inode_t *inode); + +int +afr_gfid_split_brain_source(xlator_t *this, struct afr_reply *replies, + inode_t *inode, uuid_t pargfid, const char *bname, + int src_idx, int child_idx, + unsigned char *locked_on, int *src, dict_t *xdata); +int +afr_mark_source_sinks_if_file_empty(xlator_t *this, unsigned char *sources, + unsigned char *sinks, + unsigned char *healed_sinks, + unsigned char *locked_on, + struct afr_reply *replies, + afr_transaction_type type); + +gf_boolean_t +afr_is_file_empty_on_all_children(afr_private_t *priv, + struct afr_reply *replies); + +int +afr_selfheal_entry_delete(xlator_t *this, inode_t *dir, const char *name, + inode_t *inode, int child, struct afr_reply *replies); +int +afr_anon_inode_create(xlator_t *this, int child, inode_t **linked_inode); +#endif /* !_AFR_SELFHEAL_H */ |