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/*
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_SELFHEAL_H
#define _AFR_SELFHEAL_H
#define AFR_SH_MIN_PARTICIPANTS 2
/* 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 = NULL; \
\
__child_up = alloca0 (__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 = 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) ({type **__ptr = NULL; \
int __i; \
__ptr = alloca0 (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."
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, inode_t *inode);
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_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);
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,
gf_boolean_t *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);
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);
void
afr_log_selfheal (uuid_t gfid, xlator_t *this, int ret, char *type,
int source, unsigned char *sources,
unsigned char *healed_sinks);
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);
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_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_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_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_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, gf_boolean_t *flag);
int
__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,
gf_boolean_t *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,
gf_boolean_t *flag);
int
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);
int
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_selfheal_metadata_by_stbuf (xlator_t *this, struct iatt *stbuf);
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);
#endif /* !_AFR_SELFHEAL_H */
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