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898ca82cee
glusterfs/SOURCES/0570-features-shard-avoid-repeatative-calls-to-gf_uuid_un.patch
CentOS Sources 898ca82cee import glusterfs-6.0-61.2.el8_5
2022-02-25 05:25:05 +00:00

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From 1a8b001a121ada4d3d338b52b312896f1790f2bb Mon Sep 17 00:00:00 2001
From: Vinayak hariharmath <65405035+VHariharmath-rh@users.noreply.github.com>
Date: Mon, 11 Jan 2021 12:34:55 +0530
Subject: [PATCH 570/584] features/shard: avoid repeatative calls to
gf_uuid_unparse()
The issue is shard_make_block_abspath() calls gf_uuid_unparse()
every time while constructing shard path. The gfid can be parsed
and saved once and passed while constructing the path. Thus
we can avoid calling gf_uuid_unparse().
Backport of:
> Upstream-patch: https://github.com/gluster/glusterfs/pull/1689
> Fixes: #1423
> Change-Id: Ia26fbd5f09e812bbad9e5715242f14143c013c9c
> Signed-off-by: Vinayakswami Hariharmath vharihar@redhat.com
BUG: 1925425
Change-Id: Ia26fbd5f09e812bbad9e5715242f14143c013c9c
Signed-off-by: Vinayakswami Hariharmath vharihar@redhat.com
Reviewed-on: https://code.engineering.redhat.com/gerrit/c/rhs-glusterfs/+/244964
Tested-by: RHGS Build Bot <nigelb@redhat.com>
Reviewed-by: Sunil Kumar Heggodu Gopala Acharya <sheggodu@redhat.com>
---
tests/bugs/shard/issue-1425.t | 9 ++-
xlators/features/shard/src/shard.c | 119 ++++++++++++++++++-------------------
2 files changed, 65 insertions(+), 63 deletions(-)
diff --git a/tests/bugs/shard/issue-1425.t b/tests/bugs/shard/issue-1425.t
index bbe82c0..8b77705 100644
--- a/tests/bugs/shard/issue-1425.t
+++ b/tests/bugs/shard/issue-1425.t
@@ -21,7 +21,13 @@ TEST $CLI volume profile $V0 start
TEST $GFS --volfile-id=$V0 --volfile-server=$H0 $M0
+$CLI volume profile $V0 info clear
+
TEST fallocate -l 20M $M0/foo
+
+# There should be 1+4 shards and we expect 4 lookups less than on the build without this patch
+EXPECT "5" echo `$CLI volume profile $V0 info incremental | grep -w LOOKUP | awk '{print $8}'`
+
gfid_new=$(get_gfid_string $M0/foo)
# Check for the base shard
@@ -31,9 +37,6 @@ TEST stat $B0/${V0}0/foo
# There should be 4 associated shards
EXPECT_WITHIN $FILE_COUNT_TIME 4 get_file_count $B0/${V0}0/.shard/$gfid_new
-# There should be 1+4 shards and we expect 4 lookups less than on the build without this patch
-EXPECT "21" echo `$CLI volume profile $V0 info incremental | grep -w LOOKUP | awk '{print $8}'`
-
# Delete the base shard and check shards get cleaned up
TEST unlink $M0/foo
diff --git a/xlators/features/shard/src/shard.c b/xlators/features/shard/src/shard.c
index a6ad1b8..d1d7d7a 100644
--- a/xlators/features/shard/src/shard.c
+++ b/xlators/features/shard/src/shard.c
@@ -16,6 +16,8 @@
#include <glusterfs/defaults.h>
#include <glusterfs/statedump.h>
+#define SHARD_PATH_MAX (sizeof(GF_SHARD_DIR) + GF_UUID_BUF_SIZE + 16)
+
static gf_boolean_t
__is_shard_dir(uuid_t gfid)
{
@@ -49,15 +51,19 @@ shard_make_block_bname(int block_num, uuid_t gfid, char *buf, size_t len)
snprintf(buf, len, "%s.%d", gfid_str, block_num);
}
-void
-shard_make_block_abspath(int block_num, uuid_t gfid, char *filepath, size_t len)
+static int
+shard_make_base_path(char *path, uuid_t gfid)
{
- char gfid_str[GF_UUID_BUF_SIZE] = {
- 0,
- };
+ strcpy(path, "/" GF_SHARD_DIR "/");
+ uuid_utoa_r(gfid, path + sizeof(GF_SHARD_DIR) + 1);
+ return (sizeof(GF_SHARD_DIR) + GF_UUID_BUF_SIZE);
+}
- gf_uuid_unparse(gfid, gfid_str);
- snprintf(filepath, len, "/%s/%s.%d", GF_SHARD_DIR, gfid_str, block_num);
+static inline void
+shard_append_index(char *path, int path_size, int prefix_len,
+ int shard_idx_iter)
+{
+ snprintf(path + prefix_len, path_size - prefix_len, ".%d", shard_idx_iter);
}
int
@@ -1004,9 +1010,8 @@ shard_common_resolve_shards(call_frame_t *frame, xlator_t *this,
{
int i = -1;
uint32_t shard_idx_iter = 0;
- char path[PATH_MAX] = {
- 0,
- };
+ int prefix_len = 0;
+ char path[SHARD_PATH_MAX];
uuid_t gfid = {
0,
};
@@ -1055,6 +1060,9 @@ shard_common_resolve_shards(call_frame_t *frame, xlator_t *this,
else
gf_uuid_copy(gfid, local->base_gfid);
+ /* Build base shard path before appending index of the shard */
+ prefix_len = shard_make_base_path(path, gfid);
+
while (shard_idx_iter <= resolve_count) {
i++;
if (shard_idx_iter == 0) {
@@ -1062,16 +1070,13 @@ shard_common_resolve_shards(call_frame_t *frame, xlator_t *this,
shard_idx_iter++;
continue;
}
-
- shard_make_block_abspath(shard_idx_iter, gfid, path, sizeof(path));
-
+ shard_append_index(path, SHARD_PATH_MAX, prefix_len, shard_idx_iter);
inode = NULL;
inode = inode_resolve(this->itable, path);
if (inode) {
gf_msg_debug(this->name, 0,
- "Shard %d already "
- "present. gfid=%s. Saving inode for future.",
- shard_idx_iter, uuid_utoa(inode->gfid));
+ "Shard %s already present. Saving inode for future.",
+ path);
local->inode_list[i] = inode;
/* Let the ref on the inodes that are already present
* in inode table still be held so that they don't get
@@ -2153,9 +2158,8 @@ shard_truncate_htol(call_frame_t *frame, xlator_t *this, inode_t *inode)
int call_count = 0;
uint32_t cur_block = 0;
uint32_t last_block = 0;
- char path[PATH_MAX] = {
- 0,
- };
+ int prefix_len = 0;
+ char path[SHARD_PATH_MAX];
char *bname = NULL;
loc_t loc = {
0,
@@ -2216,6 +2220,10 @@ shard_truncate_htol(call_frame_t *frame, xlator_t *this, inode_t *inode)
return 0;
}
+ /* Build base shard path before appending index of the shard */
+ prefix_len = shard_make_base_path(path, inode->gfid);
+ bname = path + sizeof(GF_SHARD_DIR) + 1;
+
SHARD_SET_ROOT_FS_ID(frame, local);
while (cur_block <= last_block) {
if (!local->inode_list[i]) {
@@ -2229,15 +2237,12 @@ shard_truncate_htol(call_frame_t *frame, xlator_t *this, inode_t *inode)
goto next;
}
- shard_make_block_abspath(cur_block, inode->gfid, path, sizeof(path));
- bname = strrchr(path, '/') + 1;
+ shard_append_index(path, SHARD_PATH_MAX, prefix_len, cur_block);
loc.parent = inode_ref(priv->dot_shard_inode);
ret = inode_path(loc.parent, bname, (char **)&(loc.path));
if (ret < 0) {
gf_msg(this->name, GF_LOG_ERROR, 0, SHARD_MSG_INODE_PATH_FAILED,
- "Inode path failed"
- " on %s. Base file gfid = %s",
- bname, uuid_utoa(inode->gfid));
+ "Inode path failed on %s.", bname);
local->op_ret = -1;
local->op_errno = ENOMEM;
loc_wipe(&loc);
@@ -2465,13 +2470,8 @@ shard_common_lookup_shards(call_frame_t *frame, xlator_t *this, inode_t *inode,
int call_count = 0;
int32_t shard_idx_iter = 0;
int lookup_count = 0;
- char path[PATH_MAX] = {
- 0,
- };
+ char path[SHARD_PATH_MAX];
char *bname = NULL;
- uuid_t gfid = {
- 0,
- };
loc_t loc = {
0,
};
@@ -2489,10 +2489,16 @@ shard_common_lookup_shards(call_frame_t *frame, xlator_t *this, inode_t *inode,
if (local->lookup_shards_barriered)
local->barrier.waitfor = local->call_count;
+ /* Build base shard path before appending index of the shard */
+ strcpy(path, "/" GF_SHARD_DIR "/");
+
if (inode)
- gf_uuid_copy(gfid, inode->gfid);
+ uuid_utoa_r(inode->gfid, path + sizeof(GF_SHARD_DIR) + 1);
else
- gf_uuid_copy(gfid, local->base_gfid);
+ uuid_utoa_r(local->base_gfid, path + sizeof(GF_SHARD_DIR) + 1);
+
+ int prefix_len = sizeof(GF_SHARD_DIR) + GF_UUID_BUF_SIZE;
+ bname = path + sizeof(GF_SHARD_DIR) + 1;
while (shard_idx_iter <= lookup_count) {
if (local->inode_list[i]) {
@@ -2508,18 +2514,14 @@ shard_common_lookup_shards(call_frame_t *frame, xlator_t *this, inode_t *inode,
goto next;
}
- shard_make_block_abspath(shard_idx_iter, gfid, path, sizeof(path));
-
- bname = strrchr(path, '/') + 1;
+ shard_append_index(path, SHARD_PATH_MAX, prefix_len, shard_idx_iter);
loc.inode = inode_new(this->itable);
loc.parent = inode_ref(priv->dot_shard_inode);
gf_uuid_copy(loc.pargfid, priv->dot_shard_gfid);
ret = inode_path(loc.parent, bname, (char **)&(loc.path));
if (ret < 0 || !(loc.inode)) {
gf_msg(this->name, GF_LOG_ERROR, 0, SHARD_MSG_INODE_PATH_FAILED,
- "Inode path failed"
- " on %s, base file gfid = %s",
- bname, uuid_utoa(gfid));
+ "Inode path failed on %s", bname);
local->op_ret = -1;
local->op_errno = ENOMEM;
loc_wipe(&loc);
@@ -3168,12 +3170,7 @@ shard_unlink_shards_do(call_frame_t *frame, xlator_t *this, inode_t *inode)
uint32_t cur_block = 0;
uint32_t cur_block_idx = 0; /*this is idx into inode_list[] array */
char *bname = NULL;
- char path[PATH_MAX] = {
- 0,
- };
- uuid_t gfid = {
- 0,
- };
+ char path[SHARD_PATH_MAX];
loc_t loc = {
0,
};
@@ -3184,10 +3181,16 @@ shard_unlink_shards_do(call_frame_t *frame, xlator_t *this, inode_t *inode)
priv = this->private;
local = frame->local;
+ /* Build base shard path before appending index of the shard */
+ strcpy(path, "/" GF_SHARD_DIR "/");
+
if (inode)
- gf_uuid_copy(gfid, inode->gfid);
+ uuid_utoa_r(inode->gfid, path + sizeof(GF_SHARD_DIR) + 1);
else
- gf_uuid_copy(gfid, local->base_gfid);
+ uuid_utoa_r(local->base_gfid, path + sizeof(GF_SHARD_DIR) + 1);
+
+ int prefix_len = sizeof(GF_SHARD_DIR) + GF_UUID_BUF_SIZE;
+ bname = path + sizeof(GF_SHARD_DIR) + 1;
for (i = 0; i < local->num_blocks; i++) {
if (!local->inode_list[i])
@@ -3203,7 +3206,7 @@ shard_unlink_shards_do(call_frame_t *frame, xlator_t *this, inode_t *inode)
gf_msg_debug(this->name, 0,
"All shards that need to be "
"unlinked are non-existent: %s",
- uuid_utoa(gfid));
+ path);
return 0;
}
@@ -3221,15 +3224,12 @@ shard_unlink_shards_do(call_frame_t *frame, xlator_t *this, inode_t *inode)
goto next;
}
- shard_make_block_abspath(cur_block, gfid, path, sizeof(path));
- bname = strrchr(path, '/') + 1;
+ shard_append_index(path, SHARD_PATH_MAX, prefix_len, cur_block);
loc.parent = inode_ref(priv->dot_shard_inode);
ret = inode_path(loc.parent, bname, (char **)&(loc.path));
if (ret < 0) {
gf_msg(this->name, GF_LOG_ERROR, 0, SHARD_MSG_INODE_PATH_FAILED,
- "Inode path failed"
- " on %s, base file gfid = %s",
- bname, uuid_utoa(gfid));
+ "Inode path failed on %s", bname);
local->op_ret = -1;
local->op_errno = ENOMEM;
loc_wipe(&loc);
@@ -4971,9 +4971,8 @@ shard_common_resume_mknod(call_frame_t *frame, xlator_t *this,
int last_block = 0;
int ret = 0;
int call_count = 0;
- char path[PATH_MAX] = {
- 0,
- };
+ int prefix_len = 0;
+ char path[SHARD_PATH_MAX];
mode_t mode = 0;
char *bname = NULL;
shard_priv_t *priv = NULL;
@@ -4996,6 +4995,10 @@ shard_common_resume_mknod(call_frame_t *frame, xlator_t *this,
call_count = local->call_count = local->create_count;
local->post_mknod_handler = post_mknod_handler;
+ /* Build base shard path before appending index of the shard */
+ prefix_len = shard_make_base_path(path, fd->inode->gfid);
+ bname = path + sizeof(GF_SHARD_DIR) + 1;
+
SHARD_SET_ROOT_FS_ID(frame, local);
ret = shard_inode_ctx_get_all(fd->inode, this, &ctx_tmp);
@@ -5022,10 +5025,7 @@ shard_common_resume_mknod(call_frame_t *frame, xlator_t *this,
-1, ENOMEM, NULL, NULL, NULL, NULL, NULL);
goto next;
}
-
- shard_make_block_abspath(shard_idx_iter, fd->inode->gfid, path,
- sizeof(path));
-
+ shard_append_index(path, SHARD_PATH_MAX, prefix_len, shard_idx_iter);
xattr_req = shard_create_gfid_dict(local->xattr_req);
if (!xattr_req) {
local->op_ret = -1;
@@ -5036,7 +5036,6 @@ shard_common_resume_mknod(call_frame_t *frame, xlator_t *this,
goto next;
}
- bname = strrchr(path, '/') + 1;
loc.inode = inode_new(this->itable);
loc.parent = inode_ref(priv->dot_shard_inode);
ret = inode_path(loc.parent, bname, (char **)&(loc.path));
--
1.8.3.1
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