diff options
Diffstat (limited to 'xlators/cluster/afr/src/afr-self-heal-common.c')
| -rw-r--r-- | xlators/cluster/afr/src/afr-self-heal-common.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/xlators/cluster/afr/src/afr-self-heal-common.c b/xlators/cluster/afr/src/afr-self-heal-common.c index f35c41df274..a580a1584cc 100644 --- a/xlators/cluster/afr/src/afr-self-heal-common.c +++ b/xlators/cluster/afr/src/afr-self-heal-common.c @@ -2750,3 +2750,185 @@ afr_choose_source_by_policy(afr_private_t *priv, unsigned char *sources, out: return source; } + +static int +afr_anon_inode_mkdir_cbk(call_frame_t *frame, void *cookie, xlator_t *this, + int32_t op_ret, int32_t op_errno, inode_t *inode, + struct iatt *buf, struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) +{ + afr_local_t *local = frame->local; + int i = (long)cookie; + + local->replies[i].valid = 1; + local->replies[i].op_ret = op_ret; + local->replies[i].op_errno = op_errno; + if (op_ret == 0) { + local->op_ret = 0; + local->replies[i].poststat = *buf; + local->replies[i].preparent = *preparent; + local->replies[i].postparent = *postparent; + } + if (xdata) { + local->replies[i].xdata = dict_ref(xdata); + } + + syncbarrier_wake(&local->barrier); + return 0; +} + +int +afr_anon_inode_create(xlator_t *this, int child, inode_t **linked_inode) +{ + call_frame_t *frame = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = this->private; + unsigned char *mkdir_on = alloca0(priv->child_count); + unsigned char *lookup_on = alloca0(priv->child_count); + loc_t loc = {0}; + int32_t op_errno = 0; + int32_t child_op_errno = 0; + struct iatt iatt = {0}; + dict_t *xdata = NULL; + uuid_t anon_inode_gfid = {0}; + int mkdir_count = 0; + int i = 0; + + /*Try to mkdir everywhere and return success if the dir exists on 'child' + */ + + if (!priv->use_anon_inode) { + op_errno = EINVAL; + goto out; + } + + frame = afr_frame_create(this, &op_errno); + if (op_errno) { + goto out; + } + local = frame->local; + if (!local->child_up[child]) { + /*Other bricks may need mkdir so don't error out yet*/ + child_op_errno = ENOTCONN; + } + gf_uuid_parse(priv->anon_gfid_str, anon_inode_gfid); + for (i = 0; i < priv->child_count; i++) { + if (!local->child_up[i]) + continue; + + if (priv->anon_inode[i]) { + mkdir_on[i] = 0; + } else { + mkdir_on[i] = 1; + mkdir_count++; + } + } + + if (mkdir_count == 0) { + *linked_inode = inode_find(this->itable, anon_inode_gfid); + if (*linked_inode) { + op_errno = 0; + goto out; + } + } + + loc.parent = inode_ref(this->itable->root); + loc.name = priv->anon_inode_name; + loc.inode = inode_new(this->itable); + if (!loc.inode) { + op_errno = ENOMEM; + goto out; + } + + xdata = dict_new(); + if (!xdata) { + op_errno = ENOMEM; + goto out; + } + + op_errno = -dict_set_gfuuid(xdata, "gfid-req", anon_inode_gfid, _gf_true); + if (op_errno) { + goto out; + } + + if (mkdir_count == 0) { + memcpy(lookup_on, local->child_up, priv->child_count); + goto lookup; + } + + AFR_ONLIST(mkdir_on, frame, afr_anon_inode_mkdir_cbk, mkdir, &loc, 0755, 0, + xdata); + + for (i = 0; i < priv->child_count; i++) { + if (!mkdir_on[i]) { + continue; + } + + if (local->replies[i].op_ret == 0) { + priv->anon_inode[i] = 1; + iatt = local->replies[i].poststat; + } else if (local->replies[i].op_ret < 0 && + local->replies[i].op_errno == EEXIST) { + lookup_on[i] = 1; + } else if (i == child) { + child_op_errno = local->replies[i].op_errno; + } + } + + if (AFR_COUNT(lookup_on, priv->child_count) == 0) { + goto link; + } + +lookup: + AFR_ONLIST(lookup_on, frame, afr_selfheal_discover_cbk, lookup, &loc, + xdata); + for (i = 0; i < priv->child_count; i++) { + if (!lookup_on[i]) { + continue; + } + + if (local->replies[i].op_ret == 0) { + if (gf_uuid_compare(anon_inode_gfid, + local->replies[i].poststat.ia_gfid) == 0) { + priv->anon_inode[i] = 1; + iatt = local->replies[i].poststat; + } else { + if (i == child) + child_op_errno = EINVAL; + gf_msg(this->name, GF_LOG_ERROR, 0, AFR_MSG_INVALID_DATA, + "%s has gfid: %s", priv->anon_inode_name, + uuid_utoa(local->replies[i].poststat.ia_gfid)); + } + } else if (i == child) { + child_op_errno = local->replies[i].op_errno; + } + } +link: + if (!gf_uuid_is_null(iatt.ia_gfid)) { + *linked_inode = inode_link(loc.inode, loc.parent, loc.name, &iatt); + if (*linked_inode) { + op_errno = 0; + inode_lookup(*linked_inode); + } else { + op_errno = ENOMEM; + } + goto out; + } + +out: + if (xdata) + dict_unref(xdata); + loc_wipe(&loc); + /*child_op_errno takes precedence*/ + if (child_op_errno == 0) { + child_op_errno = op_errno; + } + + if (child_op_errno && *linked_inode) { + inode_unref(*linked_inode); + *linked_inode = NULL; + } + if (frame) + AFR_STACK_DESTROY(frame); + return -child_op_errno; +} |