diff options
Diffstat (limited to 'xlators/cluster/dht')
| -rw-r--r-- | xlators/cluster/dht/src/dht-common.c | 76 |
1 files changed, 72 insertions, 4 deletions
diff --git a/xlators/cluster/dht/src/dht-common.c b/xlators/cluster/dht/src/dht-common.c index 2bb3c51487a..586321f96d6 100644 --- a/xlators/cluster/dht/src/dht-common.c +++ b/xlators/cluster/dht/src/dht-common.c @@ -809,6 +809,59 @@ dht_lookup_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this, } int +dht_lookup_unlink_of_false_linkto_cbk (call_frame_t *frame, void *cookie, + xlator_t *this, int op_ret, int op_errno, + struct iatt *preparent, + struct iatt *postparent, dict_t *xdata) +{ + int this_call_cnt = 0; + dht_local_t *local = NULL; + const char *path = NULL; + + local = (dht_local_t*)frame->local; + path = local->loc.path; + + gf_log (this->name, GF_LOG_INFO, "lookup_unlink returned with " + "op_ret -> %d and op-errno -> %d for %s", op_ret, op_errno, + ((path == NULL)? "null" : path )); + + this_call_cnt = dht_frame_return (frame); + if (is_last_call (this_call_cnt)) { + + if (op_ret == 0) { + dht_lookup_everywhere_done (frame, this); + } else { + /*When dht_lookup_everywhere is performed, one cached + *and one hashed file was found and hashed file does + *not point to the above mentioned cached node. So it + *was considered as stale and an unlink was performed. + *But unlink fails. So may be rebalance is in progress. + *now ideally we have two data-files. One obtained during + *lookup_everywhere and one where unlink-failed. So + *at this point in time we cannot decide which one to + *choose because there are chances of first cached + *file is truncated after rebalance and if it is choosen + *as cached node, application will fail. So return EIO.*/ + + if (op_errno == EBUSY) { + + gf_log (this->name, GF_LOG_ERROR, + "Could not unlink the linkto file as " + "either fd is open and/or linkto xattr " + "is set for %s", + ((path == NULL)? "null":path)); + + } + DHT_STACK_UNWIND (lookup, frame, -1, EIO, NULL, NULL, + NULL, NULL); + + } + } + + return 0; +} + +int dht_lookup_unlink_stale_linkto_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int op_ret, int op_errno, struct iatt *preparent, @@ -1041,12 +1094,27 @@ dht_lookup_everywhere_done (call_frame_t *frame, xlator_t *this) } else { local->skip_unlink.handle_valid_link = _gf_false; - if (local->skip_unlink.opend_fd_count == 0) { - local->call_cnt = 1; - STACK_WIND (frame, dht_lookup_unlink_cbk, + if (local->skip_unlink.opend_fd_count == 0) { + + + ret = dht_fill_dict_to_avoid_unlink_of_migrating_file + (local->xattr_req); + + + if (ret) { + DHT_STACK_UNWIND (lookup, frame, -1, + EIO, NULL, NULL, + NULL, NULL); + } else { + local->call_cnt = 1; + STACK_WIND (frame, + dht_lookup_unlink_of_false_linkto_cbk, hashed_subvol, hashed_subvol->fops->unlink, - &local->loc, 0, NULL); + &local->loc, 0, + local->xattr_req); + } + return 0; } |