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-rw-r--r--xlators/cluster/dht/src/dht-common.c45
-rw-r--r--xlators/cluster/dht/src/dht-common.h32
-rw-r--r--xlators/cluster/dht/src/dht-layout.c21
3 files changed, 65 insertions, 33 deletions
diff --git a/xlators/cluster/dht/src/dht-common.c b/xlators/cluster/dht/src/dht-common.c
index 8cbae676ee3..fbde47df69e 100644
--- a/xlators/cluster/dht/src/dht-common.c
+++ b/xlators/cluster/dht/src/dht-common.c
@@ -148,9 +148,12 @@ dht_discover_complete (xlator_t *this, call_frame_t *discover_frame)
int op_errno = 0;
int ret = -1;
dht_layout_t *layout = NULL;
+ dht_conf_t *conf = NULL;
+ uint32_t missing = 0;
local = discover_frame->local;
layout = local->layout;
+ conf = this->private;
LOCK(&discover_frame->lock);
{
@@ -183,19 +186,27 @@ dht_discover_complete (xlator_t *this, call_frame_t *discover_frame)
goto out;
}
} else {
- ret = dht_layout_normalize (this, &local->loc, layout);
- if ((ret < 0) || ((ret > 0) && (local->op_ret != 0))) {
- /* either the layout is incorrect or the directory is
- * not found even in one subvolume.
- */
+ ret = dht_layout_normalize (this, &local->loc, layout,
+ &missing);
+ if (ret < 0) {
gf_log (this->name, GF_LOG_DEBUG,
- "normalizing failed on %s "
- "(overlaps/holes present: %s, "
- "ENOENT errors: %d)", local->loc.path,
- (ret < 0) ? "yes" : "no", (ret > 0) ? ret : 0);
- op_errno = EINVAL;
+ "normalizing failed on %s (internal error)",
+ local->loc.path);
+ op_errno = EIO;
+ goto out;
+ }
+ if (missing == conf->subvolume_cnt) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "normalizing failed on %s, ENOENT errors: %u)",
+ local->loc.path, missing);
+ op_errno = ENOENT;
goto out;
}
+ if (ret != 0) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "normalizing failed on %s "
+ "(overlaps/holes present)", local->loc.path);
+ }
dht_layout_set (this, local->inode, layout);
}
@@ -397,6 +408,7 @@ dht_lookup_dir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
dht_layout_t *layout = NULL;
int ret = -1;
int is_dir = 0;
+ uint32_t missing = 0;
GF_VALIDATE_OR_GOTO ("dht", frame, out);
GF_VALIDATE_OR_GOTO ("dht", this, out);
@@ -477,9 +489,16 @@ unlock:
}
if (local->op_ret == 0) {
- ret = dht_layout_normalize (this, &local->loc, layout);
-
- if (ret != 0) {
+ ret = dht_layout_normalize (this, &local->loc, layout,
+ &missing);
+
+ /*
+ * Arguably, we shouldn't do self-heal just because
+ * bricks are missing as long as there are no other
+ * anomalies. For now, though, just preserve the
+ * existing behavior.
+ */
+ if ((ret != 0) || (missing != 0)) {
gf_log (this->name, GF_LOG_DEBUG,
"fixing assignment on %s",
local->loc.path);
diff --git a/xlators/cluster/dht/src/dht-common.h b/xlators/cluster/dht/src/dht-common.h
index f079e688be9..9de861360c5 100644
--- a/xlators/cluster/dht/src/dht-common.h
+++ b/xlators/cluster/dht/src/dht-common.h
@@ -394,18 +394,26 @@ typedef enum {
} while (0)
#define is_greater_time(a, an, b, bn) (((a) < (b)) || (((a) == (b)) && ((an) < (bn))))
-dht_layout_t *dht_layout_new (xlator_t *this, int cnt);
-dht_layout_t *dht_layout_get (xlator_t *this, inode_t *inode);
-dht_layout_t *dht_layout_for_subvol (xlator_t *this, xlator_t *subvol);
-xlator_t *dht_layout_search (xlator_t *this, dht_layout_t *layout,
- const char *name);
-int dht_layout_normalize (xlator_t *this, loc_t *loc, dht_layout_t *layout);
-int dht_layout_anomalies (xlator_t *this, loc_t *loc, dht_layout_t *layout,
- uint32_t *holes_p, uint32_t *overlaps_p,
- uint32_t *missing_p, uint32_t *down_p,
- uint32_t *misc_p, uint32_t *no_space_p);
-int dht_layout_dir_mismatch (xlator_t *this, dht_layout_t *layout,
- xlator_t *subvol, loc_t *loc, dict_t *xattr);
+
+dht_layout_t *dht_layout_new (xlator_t *this, int cnt);
+dht_layout_t *dht_layout_get (xlator_t *this, inode_t *inode);
+dht_layout_t *dht_layout_for_subvol (xlator_t *this, xlator_t *subvol);
+xlator_t *dht_layout_search (xlator_t *this, dht_layout_t *layout,
+ const char *name);
+int dht_layout_normalize (xlator_t *this, loc_t *loc,
+ dht_layout_t *layout,
+ uint32_t *missing_p);
+int dht_layout_anomalies (xlator_t *this, loc_t *loc,
+ dht_layout_t *layout,
+ uint32_t *holes_p,
+ uint32_t *overlaps_p,
+ uint32_t *missing_p,
+ uint32_t *down_p,
+ uint32_t *misc_p,
+ uint32_t *no_space_p);
+int dht_layout_dir_mismatch (xlator_t *this, dht_layout_t *layout,
+ xlator_t *subvol, loc_t *loc,
+ dict_t *xattr);
xlator_t *dht_linkfile_subvol (xlator_t *this, inode_t *inode,
struct iatt *buf, dict_t *xattr);
diff --git a/xlators/cluster/dht/src/dht-layout.c b/xlators/cluster/dht/src/dht-layout.c
index 0572298699c..07e8cbae495 100644
--- a/xlators/cluster/dht/src/dht-layout.c
+++ b/xlators/cluster/dht/src/dht-layout.c
@@ -593,7 +593,8 @@ dht_layout_anomalies (xlator_t *this, loc_t *loc, dht_layout_t *layout,
int
-dht_layout_normalize (xlator_t *this, loc_t *loc, dht_layout_t *layout)
+dht_layout_normalize (xlator_t *this, loc_t *loc, dht_layout_t *layout,
+ uint32_t *missing_p)
{
int ret = 0;
int i = 0;
@@ -605,6 +606,7 @@ dht_layout_normalize (xlator_t *this, loc_t *loc, dht_layout_t *layout)
ret = dht_layout_sort (layout);
if (ret == -1) {
+ /* defensive coding; this can't happen currently */
gf_log (this->name, GF_LOG_WARNING,
"sort failed?! how the ....");
goto out;
@@ -614,23 +616,26 @@ dht_layout_normalize (xlator_t *this, loc_t *loc, dht_layout_t *layout)
&holes, &overlaps,
&missing, &down, &misc, NULL);
if (ret == -1) {
+ /* defensive coding; this can't happen currently */
gf_log (this->name, GF_LOG_WARNING,
"error while finding anomalies in %s -- not good news",
loc->path);
goto out;
}
- if (holes || overlaps) {
+ ret = holes + overlaps;
+ if (ret) {
if (missing == layout->cnt) {
gf_log (this->name, GF_LOG_DEBUG,
"directory %s looked up first time",
loc->path);
} else {
gf_log (this->name, GF_LOG_INFO,
- "found anomalies in %s. holes=%d overlaps=%d",
- loc->path, holes, overlaps);
+ "found anomalies in %s. holes=%d overlaps=%d"
+ " missing=%d down=%d misc=%d",
+ loc->path, holes, overlaps, missing, down,
+ misc);
}
- ret = -1;
}
for (i = 0; i < layout->cnt; i++) {
@@ -645,14 +650,14 @@ dht_layout_normalize (xlator_t *this, loc_t *loc, dht_layout_t *layout)
(layout->list[i].xlator ?
layout->list[i].xlator->name
: "<>"));
- if ((layout->list[i].err == ENOENT) && (ret >= 0)) {
- ret++;
- }
}
}
out:
+ if (missing_p) {
+ *missing_p = missing;
+ }
return ret;
}
generated by cgit (git 2.34.1) at 2024-11-18 21:23:07 +0000