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Merge pull request #4064 from taosdata/feature/wal 

Feature/wal
This commit is contained in:
Shengliang Guan 2020-10-31 23:03:13 +08:00 committed by GitHub
parent e7f879c5c0 65a3719592
commit d7c73fa344
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
15 changed files with 620 additions and 452 deletions
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2
src/dnode/src/dnodeMain.c
View File

@ -19,6 +19,7 @@
#include "tutil.h" #include "tutil.h"
#include "tconfig.h" #include "tconfig.h"
#include "tglobal.h" #include "tglobal.h"
#include "twal.h"
#include "dnode.h" #include "dnode.h"
#include "dnodeInt.h" #include "dnodeInt.h"
#include "dnodeMgmt.h" #include "dnodeMgmt.h"
@ -50,6 +51,7 @@ typedef struct {
static const SDnodeComponent tsDnodeComponents[] = { static const SDnodeComponent tsDnodeComponents[] = {
{"storage", dnodeInitStorage, dnodeCleanupStorage}, {"storage", dnodeInitStorage, dnodeCleanupStorage},
{"wal", walInit, walCleanUp},
{"check", dnodeInitCheck, dnodeCleanupCheck}, // NOTES: dnodeInitCheck must be behind the dnodeinitStorage component !!! {"check", dnodeInitCheck, dnodeCleanupCheck}, // NOTES: dnodeInitCheck must be behind the dnodeinitStorage component !!!
{"vread", dnodeInitVnodeRead, dnodeCleanupVnodeRead}, {"vread", dnodeInitVnodeRead, dnodeCleanupVnodeRead},
{"vwrite", dnodeInitVnodeWrite, dnodeCleanupVnodeWrite}, {"vwrite", dnodeInitVnodeWrite, dnodeCleanupVnodeWrite},

2
src/inc/tsync.h
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@ -68,7 +68,7 @@ typedef uint32_t (*FGetFileInfo)(void *ahandle, char *name, uint32_t *index, uin
// get the wal file from index or after // get the wal file from index or after
// return value, -1: error, 1:more wal files, 0:last WAL. if name[0]==0, no WAL file // return value, -1: error, 1:more wal files, 0:last WAL. if name[0]==0, no WAL file
typedef int (*FGetWalInfo)(void *ahandle, char *name, uint32_t *index); typedef int32_t (*FGetWalInfo)(void *ahandle, char *fileName, int64_t *fileId);
// when a forward pkt is received, call this to handle data // when a forward pkt is received, call this to handle data
typedef int (*FWriteToCache)(void *ahandle, void *pHead, int type); typedef int (*FWriteToCache)(void *ahandle, void *pHead, int type);

26
src/inc/twal.h
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@ -19,9 +19,11 @@
extern "C" { extern "C" {
#endif #endif
#define TAOS_WAL_NOLOG 0 typedef enum {
#define TAOS_WAL_WRITE 1 TAOS_WAL_NOLOG = 0,
#define TAOS_WAL_FSYNC 2 TAOS_WAL_WRITE = 1,
TAOS_WAL_FSYNC = 2
} EWalType;
typedef struct { typedef struct {
int8_t msgType; int8_t msgType;
@ -34,8 +36,9 @@ typedef struct {
} SWalHead; } SWalHead;
typedef struct { typedef struct {
int8_t walLevel; // wal level int32_t vgId;
int32_t fsyncPeriod; // millisecond int32_t fsyncPeriod; // millisecond
int8_t walLevel; // wal level
int8_t wals; // number of WAL files; int8_t wals; // number of WAL files;
int8_t keep; // keep the wal file when closed int8_t keep; // keep the wal file when closed
} SWalCfg; } SWalCfg;
@ -43,14 +46,17 @@ typedef struct {
typedef void* twalh; // WAL HANDLE typedef void* twalh; // WAL HANDLE
typedef int (*FWalWrite)(void *ahandle, void *pHead, int type); typedef int (*FWalWrite)(void *ahandle, void *pHead, int type);
twalh walOpen(const char *path, const SWalCfg *pCfg); int32_t walInit();
int walAlter(twalh pWal, const SWalCfg *pCfg); void walCleanUp();
twalh walOpen(char *path, SWalCfg *pCfg);
int32_t walAlter(twalh pWal, SWalCfg *pCfg);
void walClose(twalh); void walClose(twalh);
int walRenew(twalh); int32_t walRenew(twalh);
int walWrite(twalh, SWalHead *); int32_t walWrite(twalh, SWalHead *);
void walFsync(twalh); void walFsync(twalh);
int walRestore(twalh, void *pVnode, FWalWrite writeFp); int32_t walRestore(twalh, void *pVnode, FWalWrite writeFp);
int walGetWalFile(twalh, char *name, uint32_t *index); int32_t walGetWalFile(twalh, char *fileName, int64_t *fileId);
int64_t walGetVersion(twalh); int64_t walGetVersion(twalh);
#ifdef __cplusplus #ifdef __cplusplus

6
src/mnode/src/mnodeSdb.c
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@ -175,7 +175,7 @@ static void *sdbGetTableFromId(int32_t tableId) {
} }
static int32_t sdbInitWal() { static int32_t sdbInitWal() {
SWalCfg walCfg = {.walLevel = 2, .wals = 2, .keep = 1, .fsyncPeriod = 0}; SWalCfg walCfg = {.vgId = 1, .walLevel = 2, .wals = 2, .keep = 1, .fsyncPeriod = 0};
char temp[TSDB_FILENAME_LEN]; char temp[TSDB_FILENAME_LEN];
sprintf(temp, "%s/wal", tsMnodeDir); sprintf(temp, "%s/wal", tsMnodeDir);
tsSdbObj.wal = walOpen(temp, &walCfg); tsSdbObj.wal = walOpen(temp, &walCfg);
@ -237,8 +237,8 @@ static uint32_t sdbGetFileInfo(void *ahandle, char *name, uint32_t *index, uint3
return 0; return 0;
} }
static int sdbGetWalInfo(void *ahandle, char *name, uint32_t *index) { static int32_t sdbGetWalInfo(void *ahandle, char *fileName, int64_t *fileId) {
return walGetWalFile(tsSdbObj.wal, name, index); return walGetWalFile(tsSdbObj.wal, fileName, fileId);
} }
static void sdbNotifyRole(void *ahandle, int8_t role) { static void sdbNotifyRole(void *ahandle, int8_t role) {

4
src/sync/src/syncRetrieve.c
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@ -287,7 +287,7 @@ static int syncRetrieveLastWal(SSyncPeer *pPeer, char *name, uint64_t fversion,
return -1; return -1;
} }
static int syncProcessLastWal(SSyncPeer *pPeer, char *wname, uint32_t index) { static int syncProcessLastWal(SSyncPeer *pPeer, char *wname, int64_t index) {
SSyncNode *pNode = pPeer->pSyncNode; SSyncNode *pNode = pPeer->pSyncNode;
int code = -1; int code = -1;
char fname[TSDB_FILENAME_LEN * 2]; // full path to wal file char fname[TSDB_FILENAME_LEN * 2]; // full path to wal file
@ -377,7 +377,7 @@ static int syncRetrieveWal(SSyncPeer *pPeer) {
int32_t size; int32_t size;
struct stat fstat; struct stat fstat;
int code = -1; int code = -1;
uint32_t index = 0; int64_t index = 0;
while (1) { while (1) {
// retrieve wal info // retrieve wal info

2
src/sync/test/syncServer.c
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@ -254,7 +254,7 @@ uint32_t getFileInfo(void *ahandle, char *name, uint32_t *index, uint32_t eindex
return magic; return magic;
} }
int getWalInfo(void *ahandle, char *name, uint32_t *index) { int getWalInfo(void *ahandle, char *name, int64_t *index) {
struct stat fstat; struct stat fstat;
char aname[280]; char aname[280];

22
src/wal/inc/walMgmt.h → src/util/inc/talloc.h
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@ -13,13 +13,31 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>. * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/ */
#ifndef TDENGINE_WAL_MGMT_H #ifndef TDENGINE_UTIL_ALLOC_H
#define TDENGINE_WAL_MGMT_H #define TDENGINE_UTIL_ALLOC_H
#ifdef __cplusplus #ifdef __cplusplus
extern "C" { extern "C" {
#endif #endif
#define TSDB_USE_SYS_MEM
#ifdef TSDB_USE_SYS_MEM
#define tmalloc(size) malloc(size)
#define tcalloc(size) calloc(1, size)
#define trealloc(p, size) realloc(p, size)
#define tmemalign(alignment, size) malloc(size)
#define tfree(p) free(p)
#define tmemzero(p, size) memset(p, 0, size)
#else
void *tmalloc(int32_t size);
void *tcalloc(int32_t size);
void *trealloc(void *p, int32_t size);
void *tmemalign(int32_t alignment, int32_t size);
void tfree(void *p);
void tmemzero(void *p, int32_t size);
#endif
#ifdef __cplusplus #ifdef __cplusplus
} }
#endif #endif

79
src/util/src/talloc.c Normal file
View File

@ -0,0 +1,79 @@
/*
* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
*
* This program is free software: you can use, redistribute, and/or modify
* it under the terms of the GNU Affero General Public License, version 3
* or later ("AGPL"), as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define _DEFAULT_SOURCE
#include "os.h"
#include "taoserror.h"
#include "tulog.h"
#include "talloc.h"
#define TSDB_HAVE_MEMALIGN
#ifndef TSDB_USE_SYS_MEM
void *tmalloc(int32_t size) {
void *p = malloc(size);
if (p == NULL) {
terrno = TAOS_SYSTEM_ERROR(errno);
uError("failed to malloc memory, size:%d reason:%s", size, strerror(errno));
}
return p;
}
void *tcalloc(int32_t size) {
void *p = calloc(1, size);
if (p == NULL) {
terrno = TAOS_SYSTEM_ERROR(errno);
uError("failed to calloc memory, size:%d reason:%s", size, strerror(errno));
}
return p;
}
void *trealloc(void *p, int32_t size) {
p = realloc(p, size);
if (p == NULL) {
terrno = TAOS_SYSTEM_ERROR(errno);
uError("failed to realloc memory, size:%d reason:%s", size, strerror(errno));
}
return p;
}
void tfree(void *p) { free(p); }
void tmemzero(void *p, int32_t size) { memset(p, 0, size); }
#ifdef TSDB_HAVE_MEMALIGN
void *tmemalign(int32_t alignment, int32_t size) {
void *p;
int err = posix_memalign(&p, alignment, size);
if (err) {
terrno = TAOS_SYSTEM_ERROR(errno);
uError("failed to memalign memory, alignment:%d size:%d reason:%s", alignment, size, strerror(err));
p = NULL;
}
return p;
}
#else
void *tmemalign(int32_t alignment, int32_t size) { return tmalloc(size); }
#endif
#endif

7
src/vnode/src/vnodeMain.c
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@ -42,7 +42,7 @@ static int32_t vnodeSaveVersion(SVnodeObj *pVnode);
static int32_t vnodeReadVersion(SVnodeObj *pVnode); static int32_t vnodeReadVersion(SVnodeObj *pVnode);
static int vnodeProcessTsdbStatus(void *arg, int status); static int vnodeProcessTsdbStatus(void *arg, int status);
static uint32_t vnodeGetFileInfo(void *ahandle, char *name, uint32_t *index, uint32_t eindex, int64_t *size, uint64_t *fversion); static uint32_t vnodeGetFileInfo(void *ahandle, char *name, uint32_t *index, uint32_t eindex, int64_t *size, uint64_t *fversion);
static int vnodeGetWalInfo(void *ahandle, char *name, uint32_t *index); static int vnodeGetWalInfo(void *ahandle, char *fileName, int64_t *fileId);
static void vnodeNotifyRole(void *ahandle, int8_t role); static void vnodeNotifyRole(void *ahandle, int8_t role);
static void vnodeCtrlFlow(void *handle, int32_t mseconds); static void vnodeCtrlFlow(void *handle, int32_t mseconds);
static int vnodeNotifyFileSynced(void *ahandle, uint64_t fversion); static int vnodeNotifyFileSynced(void *ahandle, uint64_t fversion);
@ -303,6 +303,7 @@ int32_t vnodeOpen(int32_t vnode, char *rootDir) {
} }
sprintf(temp, "%s/wal", rootDir); sprintf(temp, "%s/wal", rootDir);
pVnode->walCfg.vgId = pVnode->vgId;
pVnode->wal = walOpen(temp, &pVnode->walCfg); pVnode->wal = walOpen(temp, &pVnode->walCfg);
if (pVnode->wal == NULL) { if (pVnode->wal == NULL) {
vnodeCleanUp(pVnode); vnodeCleanUp(pVnode);
@ -621,9 +622,9 @@ static uint32_t vnodeGetFileInfo(void *ahandle, char *name, uint32_t *index, uin
return tsdbGetFileInfo(pVnode->tsdb, name, index, eindex, size); return tsdbGetFileInfo(pVnode->tsdb, name, index, eindex, size);
} }
static int vnodeGetWalInfo(void *ahandle, char *name, uint32_t *index) { static int vnodeGetWalInfo(void *ahandle, char *fileName, int64_t *fileId) {
SVnodeObj *pVnode = ahandle; SVnodeObj *pVnode = ahandle;
return walGetWalFile(pVnode->wal, name, index); return walGetWalFile(pVnode->wal, fileName, fileId);
} }
static void vnodeNotifyRole(void *ahandle, int8_t role) { static void vnodeNotifyRole(void *ahandle, int8_t role) {

28
src/wal/inc/walInt.h
View File

@ -31,8 +31,32 @@ extern int32_t wDebugFlag;
#define wDebug(...) { if (wDebugFlag & DEBUG_DEBUG) { taosPrintLog("WAL ", wDebugFlag, __VA_ARGS__); }} #define wDebug(...) { if (wDebugFlag & DEBUG_DEBUG) { taosPrintLog("WAL ", wDebugFlag, __VA_ARGS__); }}
#define wTrace(...) { if (wDebugFlag & DEBUG_TRACE) { taosPrintLog("WAL ", wDebugFlag, __VA_ARGS__); }} #define wTrace(...) { if (wDebugFlag & DEBUG_TRACE) { taosPrintLog("WAL ", wDebugFlag, __VA_ARGS__); }}
#define walPrefix "wal" #define WAL_PREFIX "wal"
#define walSignature (uint32_t)(0xFAFBFDFE) #define WAL_PREFIX_LEN 3
#define WAL_REFRESH_MS 1000
#define WAL_MAX_SIZE (1024 * 1024)
#define WAL_SIGNATURE ((uint32_t)(0xFAFBFDFE))
#define WAL_PATH_LEN (TSDB_FILENAME_LEN + 12)
#define WAL_FILE_LEN (TSDB_FILENAME_LEN + 32)
#define WAL_FILE_NUM 3
typedef struct {
uint64_t version;
int64_t fileId;
int32_t vgId;
int32_t fd;
int32_t keep;
int32_t level;
int32_t fsyncPeriod;
int32_t fsyncSeq;
char path[WAL_PATH_LEN];
char name[WAL_FILE_LEN];
pthread_mutex_t mutex;
} SWal;
int32_t walGetNextFile(SWal *pWal, int64_t *nextFileId);
int32_t walGetOldFile(SWal *pWal, int64_t curFileId, int32_t minDiff, int64_t *oldFileId);
int32_t walGetNewFile(SWal *pWal, int64_t *newFileId);
#ifdef __cplusplus #ifdef __cplusplus
} }

219
src/wal/src/walMgmt.c
View File

@ -16,6 +16,223 @@
#define _DEFAULT_SOURCE #define _DEFAULT_SOURCE
#include "os.h" #include "os.h"
#include "taoserror.h" #include "taoserror.h"
#include "talloc.h"
#include "tref.h"
#include "twal.h" #include "twal.h"
#include "walInt.h" #include "walInt.h"
#include "walMgmt.h"
typedef struct {
int32_t refId;
int32_t seq;
int8_t stop;
pthread_t thread;
pthread_mutex_t mutex;
} SWalMgmt;
static SWalMgmt tsWal;
static int32_t walCreateThread();
static void walStopThread();
static int32_t walInitObj(SWal *pWal);
static void walFreeObj(void *pWal);
int32_t walInit() {
tmemzero(&tsWal, sizeof(SWalMgmt));
tsWal.refId = taosOpenRef(TSDB_MIN_VNODES, walFreeObj);
int32_t code = walCreateThread();
if (code != TSDB_CODE_SUCCESS) {
wError("failed to init wal module since %s", tstrerror(code));
return code;
}
wInfo("wal module is initialized, refId:%d", tsWal.refId);
return code;
}
void walCleanUp() {
walStopThread();
taosCloseRef(tsWal.refId);
wInfo("wal module is cleaned up");
}
void *walOpen(char *path, SWalCfg *pCfg) {
SWal *pWal = tcalloc(sizeof(SWal));
if (pWal == NULL) {
terrno = TAOS_SYSTEM_ERROR(errno);
return NULL;
}
pWal->vgId = pCfg->vgId;
pWal->fd = -1;
pWal->fileId = -1;
pWal->level = pCfg->walLevel;
pWal->keep = pCfg->keep;
pWal->fsyncPeriod = pCfg->fsyncPeriod;
tstrncpy(pWal->path, path, sizeof(pWal->path));
pthread_mutex_init(&pWal->mutex, NULL);
pWal->fsyncSeq = pCfg->fsyncPeriod % 1000;
if (pWal->fsyncSeq <= 0) pWal->fsyncSeq = 1;
if (walInitObj(pWal) != TSDB_CODE_SUCCESS) {
walFreeObj(pWal);
return NULL;
}
if (taosAddRef(tsWal.refId, pWal) != TSDB_CODE_SUCCESS) {
walFreeObj(pWal);
return NULL;
}
wDebug("vgId:%d, wal:%p is opened, level:%d fsyncPeriod:%d", pWal->vgId, pWal, pWal->level, pWal->fsyncPeriod);
return pWal;
}
int32_t walAlter(void *handle, SWalCfg *pCfg) {
if (handle == NULL) return TSDB_CODE_WAL_APP_ERROR;
SWal *pWal = handle;
if (pWal->level == pCfg->walLevel && pWal->fsyncPeriod == pCfg->fsyncPeriod) {
wDebug("vgId:%d, old walLevel:%d fsync:%d, new walLevel:%d fsync:%d not change", pWal->vgId, pWal->level,
pWal->fsyncPeriod, pCfg->walLevel, pCfg->fsyncPeriod);
return TSDB_CODE_SUCCESS;
}
wInfo("vgId:%d, change old walLevel:%d fsync:%d, new walLevel:%d fsync:%d", pWal->vgId, pWal->level,
pWal->fsyncPeriod, pCfg->walLevel, pCfg->fsyncPeriod);
pWal->level = pCfg->walLevel;
pWal->fsyncPeriod = pCfg->fsyncPeriod;
pWal->fsyncSeq = pCfg->fsyncPeriod % 1000;
if (pWal->fsyncSeq <= 0) pWal->fsyncSeq = 1;
return TSDB_CODE_SUCCESS;
}
void walClose(void *handle) {
if (handle == NULL) return;
SWal *pWal = handle;
pthread_mutex_lock(&pWal->mutex);
taosClose(pWal->fd);
if (!pWal->keep) {
int64_t fileId = -1;
while (walGetNextFile(pWal, &fileId) >= 0) {
snprintf(pWal->name, sizeof(pWal->name), "%s/%s%" PRId64, pWal->path, WAL_PREFIX, fileId);
if (fileId == pWal->fileId) {
wDebug("vgId:%d, wal:%p file:%s, it is closed and kept", pWal->vgId, pWal, pWal->name);
} else if (remove(pWal->name) < 0) {
wError("vgId:%d, wal:%p file:%s, failed to remove", pWal->vgId, pWal, pWal->name);
} else {
wDebug("vgId:%d, wal:%p file:%s, it is removed", pWal->vgId, pWal, pWal->name);
}
}
} else {
wDebug("vgId:%d, wal:%p file:%s, it is closed and kept", pWal->vgId, pWal, pWal->name);
}
pthread_mutex_unlock(&pWal->mutex);
taosRemoveRef(tsWal.refId, pWal);
}
static int32_t walInitObj(SWal *pWal) {
if (taosMkDir(pWal->path, 0755) != 0) {
wError("vgId:%d, file:%s, failed to create directory since %s", pWal->vgId, pWal->path, strerror(errno));
return TAOS_SYSTEM_ERROR(errno);
}
if (pWal->keep) {
return TSDB_CODE_SUCCESS;
}
walRenew(pWal);
if (pWal && pWal->fd < 0) {
wError("vgId:%d, file:%s, failed to open file since %s", pWal->vgId, pWal->path, strerror(errno));
return TAOS_SYSTEM_ERROR(errno);
}
wDebug("vgId:%d, file is initialized", pWal->vgId);
return TSDB_CODE_SUCCESS;
}
static void walFreeObj(void *wal) {
SWal *pWal = wal;
wDebug("vgId:%d, wal:%p is freed", pWal->vgId, pWal);
taosClose(pWal->fd);
pthread_mutex_destroy(&pWal->mutex);
tfree(pWal);
}
static bool walNeedFsync(SWal *pWal) {
if (pWal->fsyncPeriod <= 0 || pWal->level != TAOS_WAL_FSYNC) {
return false;
}
if (tsWal.seq % pWal->fsyncSeq == 0) {
return true;
}
return false;
}
static void walUpdateSeq() {
taosMsleep(WAL_REFRESH_MS);
if (++tsWal.seq <= 0) {
tsWal.seq = 1;
}
}
static void walFsyncAll() {
SWal *pWal = taosIterateRef(tsWal.refId, NULL);
while (pWal) {
if (walNeedFsync(pWal)) {
wTrace("vgId:%d, do fsync, level:%d seq:%d rseq:%d", pWal->vgId, pWal->level, pWal->fsyncSeq, tsWal.seq);
int32_t code = fsync(pWal->fd);
if (code != 0) {
wError("vgId:%d, file:%s, failed to fsync since %s", pWal->vgId, pWal->name, strerror(code));
}
}
pWal = taosIterateRef(tsWal.refId, pWal);
}
}
static void *walThreadFunc(void *param) {
while (1) {
walUpdateSeq();
walFsyncAll();
if (tsWal.stop) break;
}
return NULL;
}
static int32_t walCreateThread() {
pthread_attr_t thAttr;
pthread_attr_init(&thAttr);
pthread_attr_setdetachstate(&thAttr, PTHREAD_CREATE_JOINABLE);
if (pthread_create(&tsWal.thread, &thAttr, walThreadFunc, NULL) != 0) {
wError("failed to create wal thread since %s", strerror(errno));
return TAOS_SYSTEM_ERROR(errno);
}
pthread_attr_destroy(&thAttr);
wDebug("wal thread is launched");
return TSDB_CODE_SUCCESS;
}
static void walStopThread() {
tsWal.stop = 1;
if (tsWal.thread) {
pthread_join(tsWal.thread, NULL);
}
wDebug("wal thread is stopped");
}

118
src/wal/src/walUtil.c Normal file
View File

@ -0,0 +1,118 @@
/*
* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
*
* This program is free software: you can use, redistribute, and/or modify
* it under the terms of the GNU Affero General Public License, version 3
* or later ("AGPL"), as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define _DEFAULT_SOURCE
#include "os.h"
#include "walInt.h"
int32_t walGetNextFile(SWal *pWal, int64_t *nextFileId) {
int64_t curFileId = *nextFileId;
int64_t minFileId = INT64_MAX;
DIR *dir = opendir(pWal->path);
if (dir == NULL) {
wError("vgId:%d, path:%s, failed to open since %s", pWal->vgId, pWal->path, strerror(errno));
return -1;
}
struct dirent *ent;
while ((ent = readdir(dir)) != NULL) {
char *name = ent->d_name;
if (strncmp(name, WAL_PREFIX, WAL_PREFIX_LEN) == 0) {
int64_t id = atoll(name + WAL_PREFIX_LEN);
if (id <= curFileId) continue;
if (id < minFileId) {
minFileId = id;
}
}
}
closedir(dir);
if (minFileId == INT64_MAX) return -1;
*nextFileId = minFileId;
wTrace("vgId:%d, path:%s, curFileId:%" PRId64 " nextFileId:%" PRId64, pWal->vgId, pWal->path, curFileId, *nextFileId);
return 0;
}
int32_t walGetOldFile(SWal *pWal, int64_t curFileId, int32_t minDiff, int64_t *oldFileId) {
int64_t minFileId = INT64_MAX;
DIR *dir = opendir(pWal->path);
if (dir == NULL) {
wError("vgId:%d, path:%s, failed to open since %s", pWal->vgId, pWal->path, strerror(errno));
return -1;
}
struct dirent *ent;
while ((ent = readdir(dir)) != NULL) {
char *name = ent->d_name;
if (strncmp(name, WAL_PREFIX, WAL_PREFIX_LEN) == 0) {
int64_t id = atoll(name + WAL_PREFIX_LEN);
if (id >= curFileId) continue;
minDiff--;
if (id < minFileId) {
minFileId = id;
}
}
}
closedir(dir);
if (minFileId == INT64_MAX) return -1;
if (minDiff > 0) return -1;
*oldFileId = minFileId;
wTrace("vgId:%d, path:%s, curFileId:%" PRId64 " oldFildId:%" PRId64, pWal->vgId, pWal->path, curFileId, *oldFileId);
return 0;
}
int32_t walGetNewFile(SWal *pWal, int64_t *newFileId) {
int64_t maxFileId = INT64_MIN;
DIR *dir = opendir(pWal->path);
if (dir == NULL) {
wError("vgId:%d, path:%s, failed to open since %s", pWal->vgId, pWal->path, strerror(errno));
return -1;
}
struct dirent *ent;
while ((ent = readdir(dir)) != NULL) {
char *name = ent->d_name;
if (strncmp(name, WAL_PREFIX, WAL_PREFIX_LEN) == 0) {
int64_t id = atoll(name + WAL_PREFIX_LEN);
if (id > maxFileId) {
maxFileId = id;
}
}
}
closedir(dir);
if (maxFileId == INT64_MIN) {
*newFileId = 0;
} else {
*newFileId = maxFileId;
}
wTrace("vgId:%d, path:%s, newFileId:%" PRId64, pWal->vgId, pWal->path, *newFileId);
return 0;
}

547
src/wal/src/walWrite.c
View File

@ -15,238 +15,93 @@
#define _DEFAULT_SOURCE #define _DEFAULT_SOURCE
#include "os.h" #include "os.h"
#include "talloc.h"
#include "taoserror.h"
#include "tchecksum.h"
#include "twal.h" #include "twal.h"
#include "walInt.h" #include "walInt.h"
#include "walMgmt.h"
#include "tchecksum.h"
#include "tutil.h"
#include "ttimer.h"
#include "taoserror.h"
#include "twal.h"
#include "tqueue.h"
static int32_t walRestoreWalFile(SWal *pWal, void *pVnode, FWalWrite writeFp, char *name);
typedef struct { int32_t walRenew(void *handle) {
uint64_t version;
int fd;
int keep;
int level;
int32_t fsyncPeriod;
void *timer;
void *signature;
int max; // maximum number of wal files
uint32_t id; // increase continuously
int num; // number of wal files
char path[TSDB_FILENAME_LEN];
char name[TSDB_FILENAME_LEN+16];
pthread_mutex_t mutex;
} SWal;
static void *walTmrCtrl = NULL;
static int tsWalNum = 0;
static pthread_once_t walModuleInit = PTHREAD_ONCE_INIT;
static int walHandleExistingFiles(const char *path);
static int walRestoreWalFile(SWal *pWal, void *pVnode, FWalWrite writeFp);
static int walRemoveWalFiles(const char *path);
static void walProcessFsyncTimer(void *param, void *tmrId);
static void walRelease(SWal *pWal);
static int walGetMaxOldFileId(char *odir);
static void walModuleInitFunc() {
walTmrCtrl = taosTmrInit(1000, 100, 300000, "WAL");
if (walTmrCtrl == NULL)
walModuleInit = PTHREAD_ONCE_INIT;
else
wDebug("WAL module is initialized");
}
static inline bool walNeedFsyncTimer(SWal *pWal) {
if (pWal->fsyncPeriod > 0 && pWal->level == TAOS_WAL_FSYNC) {
return true;
}
return false;
}
void *walOpen(const char *path, const SWalCfg *pCfg) {
SWal *pWal = calloc(sizeof(SWal), 1);
if (pWal == NULL) {
terrno = TAOS_SYSTEM_ERROR(errno);
return NULL;
}
pthread_once(&walModuleInit, walModuleInitFunc);
if (walTmrCtrl == NULL) {
free(pWal);
terrno = TAOS_SYSTEM_ERROR(errno);
return NULL;
}
atomic_add_fetch_32(&tsWalNum, 1);
pWal->fd = -1;
pWal->max = pCfg->wals;
pWal->id = 0;
pWal->num = 0;
pWal->level = pCfg->walLevel;
pWal->keep = pCfg->keep;
pWal->fsyncPeriod = pCfg->fsyncPeriod;
pWal->signature = pWal;
tstrncpy(pWal->path, path, sizeof(pWal->path));
pthread_mutex_init(&pWal->mutex, NULL);
if (walNeedFsyncTimer(pWal)) {
pWal->timer = taosTmrStart(walProcessFsyncTimer, pWal->fsyncPeriod, pWal, walTmrCtrl);
if (pWal->timer == NULL) {
terrno = TAOS_SYSTEM_ERROR(errno);
walRelease(pWal);
return NULL;
}
}
if (taosMkDir(path, 0755) != 0) {
terrno = TAOS_SYSTEM_ERROR(errno);
wError("wal:%s, failed to create directory(%s)", path, strerror(errno));
walRelease(pWal);
pWal = NULL;
}
if (pCfg->keep == 1) return pWal;
if (walHandleExistingFiles(path) == 0) walRenew(pWal);
if (pWal && pWal->fd < 0) {
terrno = TAOS_SYSTEM_ERROR(errno);
wError("wal:%s, failed to open(%s)", path, strerror(errno));
walRelease(pWal);
pWal = NULL;
}
if (pWal) wDebug("wal:%s, it is open, level:%d fsyncPeriod:%d", path, pWal->level, pWal->fsyncPeriod);
return pWal;
}
int walAlter(twalh wal, const SWalCfg *pCfg) {
SWal *pWal = wal;
if (pWal == NULL) {
return TSDB_CODE_WAL_APP_ERROR;
}
if (pWal->level == pCfg->walLevel && pWal->fsyncPeriod == pCfg->fsyncPeriod) {
wDebug("wal:%s, old walLevel:%d fsync:%d, new walLevel:%d fsync:%d not change", pWal->name, pWal->level,
pWal->fsyncPeriod, pCfg->walLevel, pCfg->fsyncPeriod);
return TSDB_CODE_SUCCESS;
}
wInfo("wal:%s, change old walLevel:%d fsync:%d, new walLevel:%d fsync:%d", pWal->name, pWal->level, pWal->fsyncPeriod,
pCfg->walLevel, pCfg->fsyncPeriod);
pthread_mutex_lock(&pWal->mutex);
pWal->level = pCfg->walLevel;
pWal->fsyncPeriod = pCfg->fsyncPeriod;
if (walNeedFsyncTimer(pWal)) {
wInfo("wal:%s, reset fsync timer, walLevel:%d fsyncPeriod:%d", pWal->name, pWal->level, pWal->fsyncPeriod);
taosTmrReset(walProcessFsyncTimer, pWal->fsyncPeriod, pWal, &pWal->timer, walTmrCtrl);
} else {
wInfo("wal:%s, stop fsync timer, walLevel:%d fsyncPeriod:%d", pWal->name, pWal->level, pWal->fsyncPeriod);
taosTmrStop(pWal->timer);
pWal->timer = NULL;
}
pthread_mutex_unlock(&pWal->mutex);
return TSDB_CODE_SUCCESS;
}
void walClose(void *handle) {
if (handle == NULL) return;
SWal *pWal = handle;
taosClose(pWal->fd);
if (pWal->timer) taosTmrStopA(&pWal->timer);
if (pWal->keep == 0) {
// remove all files in the directory
for (int i = 0; i < pWal->num; ++i) {
snprintf(pWal->name, sizeof(pWal->name), "%s/%s%d", pWal->path, walPrefix, pWal->id - i);
if (remove(pWal->name) < 0) {
wError("wal:%s, failed to remove", pWal->name);
} else {
wDebug("wal:%s, it is removed", pWal->name);
}
}
} else {
wDebug("wal:%s, it is closed and kept", pWal->name);
}
walRelease(pWal);
}
int walRenew(void *handle) {
if (handle == NULL) return 0; if (handle == NULL) return 0;
SWal *pWal = handle;
terrno = 0; SWal * pWal = handle;
int32_t code = 0;
pthread_mutex_lock(&pWal->mutex); pthread_mutex_lock(&pWal->mutex);
if (pWal->fd >= 0) { if (pWal->fd >= 0) {
close(pWal->fd); close(pWal->fd);
pWal->id++; wDebug("vgId:%d, file:%s, it is closed", pWal->vgId, pWal->name);
wDebug("wal:%s, it is closed", pWal->name);
} }
pWal->num++; if (pWal->keep) {
pWal->fileId = 0;
} else {
if (walGetNewFile(pWal, &pWal->fileId) != 0) pWal->fileId = 0;
pWal->fileId++;
}
snprintf(pWal->name, sizeof(pWal->name), "%s/%s%d", pWal->path, walPrefix, pWal->id); snprintf(pWal->name, sizeof(pWal->name), "%s/%s%" PRId64, pWal->path, WAL_PREFIX, pWal->fileId);
pWal->fd = open(pWal->name, O_WRONLY | O_CREAT, S_IRWXU | S_IRWXG | S_IRWXO); pWal->fd = open(pWal->name, O_WRONLY | O_CREAT, S_IRWXU | S_IRWXG | S_IRWXO);
if (pWal->fd < 0) { if (pWal->fd < 0) {
wError("wal:%s, failed to open(%s)", pWal->name, strerror(errno)); code = TAOS_SYSTEM_ERROR(errno);
terrno = TAOS_SYSTEM_ERROR(errno); wError("vgId:%d, file:%s, failed to open since %s", pWal->vgId, pWal->name, strerror(errno));
} else { } else {
wDebug("wal:%s, it is created", pWal->name); wDebug("vgId:%d, file:%s, it is created", pWal->vgId, pWal->name);
}
if (pWal->num > pWal->max) { if (!pWal->keep) {
// remove the oldest wal file // remove the oldest wal file
char name[TSDB_FILENAME_LEN * 3]; int64_t oldFileId = -1;
snprintf(name, sizeof(name), "%s/%s%d", pWal->path, walPrefix, pWal->id - pWal->max); if (walGetOldFile(pWal, pWal->fileId, WAL_FILE_NUM, &oldFileId) == 0) {
if (remove(name) < 0) { char walName[WAL_FILE_LEN] = {0};
wError("wal:%s, failed to remove(%s)", name, strerror(errno)); snprintf(walName, sizeof(walName), "%s/%s%" PRId64, pWal->path, WAL_PREFIX, oldFileId);
if (remove(walName) < 0) {
wError("vgId:%d, file:%s, failed to remove since %s", pWal->vgId, walName, strerror(errno));
} else { } else {
wDebug("wal:%s, it is removed", name); wDebug("vgId:%d, file:%s, it is removed", pWal->vgId, walName);
} }
pWal->num--;
} }
} }
pthread_mutex_unlock(&pWal->mutex); pthread_mutex_unlock(&pWal->mutex);
return terrno; return code;
} }
int walWrite(void *handle, SWalHead *pHead) { int32_t walWrite(void *handle, SWalHead *pHead) {
SWal *pWal = handle; if (handle == NULL) return -1;
if (pWal == NULL) return -1;
terrno = 0; SWal * pWal = handle;
int32_t code = 0;
// no wal // no wal
if (pWal->level == TAOS_WAL_NOLOG) return 0; if (pWal->level == TAOS_WAL_NOLOG) return 0;
if (pHead->version <= pWal->version) return 0; if (pHead->version <= pWal->version) return 0;
pHead->signature = walSignature; pHead->signature = WAL_SIGNATURE;
taosCalcChecksumAppend(0, (uint8_t *)pHead, sizeof(SWalHead)); taosCalcChecksumAppend(0, (uint8_t *)pHead, sizeof(SWalHead));
int contLen = pHead->len + sizeof(SWalHead); int32_t contLen = pHead->len + sizeof(SWalHead);
pthread_mutex_lock(&pWal->mutex);
if (taosTWrite(pWal->fd, pHead, contLen) != contLen) { if (taosTWrite(pWal->fd, pHead, contLen) != contLen) {
wError("wal:%s, failed to write(%s)", pWal->name, strerror(errno)); code = TAOS_SYSTEM_ERROR(errno);
terrno = TAOS_SYSTEM_ERROR(errno); wError("vgId:%d, file:%s, failed to write since %s", pWal->vgId, pWal->name, strerror(errno));
return terrno;
} else { } else {
pWal->version = pHead->version; pWal->version = pHead->version;
wTrace("vgId:%d, write version:%" PRId64 ", fileId:%" PRId64, pWal->vgId, pWal->version, pWal->fileId);
} }
pthread_mutex_unlock(&pWal->mutex);
ASSERT(contLen == pHead->len + sizeof(SWalHead)); ASSERT(contLen == pHead->len + sizeof(SWalHead));
return 0; return code;
} }
void walFsync(void *handle) { void walFsync(void *handle) {
@ -255,167 +110,125 @@ void walFsync(void *handle) {
if (pWal->fsyncPeriod == 0) { if (pWal->fsyncPeriod == 0) {
if (fsync(pWal->fd) < 0) { if (fsync(pWal->fd) < 0) {
wError("wal:%s, fsync failed(%s)", pWal->name, strerror(errno)); wError("vgId:%d, file:%s, fsync failed since %s", pWal->vgId, pWal->name, strerror(errno));
} }
} }
} }
int walRestore(void *handle, void *pVnode, int (*writeFp)(void *, void *, int)) { int32_t walRestore(void *handle, void *pVnode, int32_t (*writeFp)(void *, void *, int32_t)) {
SWal *pWal = handle; if (handle == NULL) return -1;
struct dirent *ent;
int count = 0;
uint32_t maxId = 0, minId = -1, index =0;
terrno = 0; SWal * pWal = handle;
int plen = strlen(walPrefix); int32_t count = 0;
char opath[TSDB_FILENAME_LEN + 5]; int32_t code = 0;
int64_t fileId = -1;
int slen = snprintf(opath, sizeof(opath), "%s", pWal->path); while ((code = walGetNextFile(pWal, &fileId)) >= 0) {
if (pWal->keep == 0) strcpy(opath + slen, "/old"); if (fileId == pWal->fileId) continue;
DIR *dir = opendir(opath); char walName[WAL_FILE_LEN];
if (dir == NULL && errno == ENOENT) return 0; snprintf(walName, sizeof(pWal->name), "%s/%s%" PRId64, pWal->path, WAL_PREFIX, fileId);
if (dir == NULL) {
terrno = TAOS_SYSTEM_ERROR(errno);
return terrno;
}
while ((ent = readdir(dir)) != NULL) { wDebug("vgId:%d, file:%s, will be restored", pWal->vgId, walName);
if (strncmp(ent->d_name, walPrefix, plen) == 0) { int32_t code = walRestoreWalFile(pWal, pVnode, writeFp, walName);
index = atol(ent->d_name + plen); if (code != TSDB_CODE_SUCCESS) {
if (index > maxId) maxId = index; wDebug("vgId:%d, file:%s, failed to restore since %s", pWal->vgId, walName, tstrerror(code));
if (index < minId) minId = index; continue;
count++;
} }
if (!pWal->keep) {
wDebug("vgId:%d, file:%s, restore success, remove this file", pWal->vgId, walName);
remove(walName);
} else {
wDebug("vgId:%d, file:%s, restore success and keep it", pWal->vgId, walName);
}
count++;
} }
closedir(dir); if (!pWal->keep) return TSDB_CODE_SUCCESS;
if (count == 0) { if (count == 0) {
if (pWal->keep) terrno = walRenew(pWal); wDebug("vgId:%d, file:%s not exist, renew it", pWal->vgId, pWal->name);
return terrno; return walRenew(pWal);
}
if (count != (maxId - minId + 1)) {
wError("wal:%s, messed up, count:%d max:%d min:%d", opath, count, maxId, minId);
terrno = TSDB_CODE_WAL_APP_ERROR;
} else { } else {
wDebug("wal:%s, %d files will be restored", opath, count); // open the existing WAL file in append mode
pWal->fileId = 0;
for (index = minId; index <= maxId; ++index) { snprintf(pWal->name, sizeof(pWal->name), "%s/%s%" PRId64, pWal->path, WAL_PREFIX, pWal->fileId);
snprintf(pWal->name, sizeof(pWal->name), "%s/%s%d", opath, walPrefix, index); pWal->fd = open(pWal->name, O_WRONLY | O_CREAT | O_APPEND, S_IRWXU | S_IRWXG | S_IRWXO);
terrno = walRestoreWalFile(pWal, pVnode, writeFp); if (pWal->fd < 0) {
if (terrno < 0) continue; wError("vgId:%d, file:%s, failed to open since %s", pWal->vgId, pWal->name, strerror(errno));
return TAOS_SYSTEM_ERROR(errno);
} }
wDebug("vgId:%d, file:%s open success", pWal->vgId, pWal->name);
} }
if (terrno == 0) { return TSDB_CODE_SUCCESS;
if (pWal->keep == 0) {
terrno = walRemoveWalFiles(opath);
if (terrno == 0) {
if (remove(opath) < 0) {
wError("wal:%s, failed to remove directory(%s)", opath, strerror(errno));
terrno = TAOS_SYSTEM_ERROR(errno);
}
}
} else {
// open the existing WAL file in append mode
pWal->num = count;
pWal->id = maxId;
snprintf(pWal->name, sizeof(pWal->name), "%s/%s%d", opath, walPrefix, maxId);
pWal->fd = open(pWal->name, O_WRONLY | O_CREAT | O_APPEND, S_IRWXU | S_IRWXG | S_IRWXO);
if (pWal->fd < 0) {
wError("wal:%s, failed to open file(%s)", pWal->name, strerror(errno));
terrno = TAOS_SYSTEM_ERROR(errno);
}
}
}
return terrno;
} }
int walGetWalFile(void *handle, char *name, uint32_t *index) { int32_t walGetWalFile(void *handle, char *fileName, int64_t *fileId) {
SWal * pWal = handle; if (handle == NULL) return -1;
int code = 1; SWal *pWal = handle;
int32_t first = 0;
name[0] = 0; // for keep
if (pWal == NULL || pWal->num == 0) return 0; if (*fileId == 0) *fileId = -1;
pthread_mutex_lock(&(pWal->mutex)); pthread_mutex_lock(&(pWal->mutex));
first = pWal->id + 1 - pWal->num; int32_t code = walGetNextFile(pWal, fileId);
if (*index == 0) *index = first; // set to first one if (code >= 0) {
sprintf(fileName, "wal/%s%" PRId64, WAL_PREFIX, *fileId);
if (*index < first && *index > pWal->id) { code = (*fileId == pWal->fileId) ? 0 : 1;
code = -1; // index out of range
} else {
sprintf(name, "wal/%s%d", walPrefix, *index);
code = (*index == pWal->id) ? 0 : 1;
} }
wTrace("vgId:%d, get wal file, code:%d curId:%" PRId64 " outId:%" PRId64, pWal->vgId, code, pWal->fileId, *fileId);
pthread_mutex_unlock(&(pWal->mutex)); pthread_mutex_unlock(&(pWal->mutex));
return code; return code;
} }
static void walRelease(SWal *pWal) { static int32_t walRestoreWalFile(SWal *pWal, void *pVnode, FWalWrite writeFp, char *name) {
pthread_mutex_destroy(&pWal->mutex); int32_t size = WAL_MAX_SIZE;
pWal->signature = NULL; void * buffer = tmalloc(size);
free(pWal);
if (atomic_sub_fetch_32(&tsWalNum, 1) == 0) {
if (walTmrCtrl) taosTmrCleanUp(walTmrCtrl);
walTmrCtrl = NULL;
walModuleInit = PTHREAD_ONCE_INIT;
wDebug("WAL module is cleaned up");
}
}
static int walRestoreWalFile(SWal *pWal, void *pVnode, FWalWrite writeFp) {
char *name = pWal->name;
int size = 1024 * 1024; // default 1M buffer size
terrno = 0;
char *buffer = malloc(size);
if (buffer == NULL) { if (buffer == NULL) {
terrno = TAOS_SYSTEM_ERROR(errno); wError("vgId:%d, file:%s, failed to open for restore since %s", pWal->vgId, name, strerror(errno));
return terrno; return TAOS_SYSTEM_ERROR(errno);
} }
SWalHead *pHead = (SWalHead *)buffer; int32_t fd = open(name, O_RDWR);
int fd = open(name, O_RDWR);
if (fd < 0) { if (fd < 0) {
wError("wal:%s, failed to open for restore(%s)", name, strerror(errno)); wError("vgId:%d, file:%s, failed to open for restore since %s", pWal->vgId, name, strerror(errno));
terrno = TAOS_SYSTEM_ERROR(errno); tfree(buffer);
free(buffer); return TAOS_SYSTEM_ERROR(errno);
return terrno;
} }
wDebug("wal:%s, start to restore", name); wDebug("vgId:%d, file:%s, start to restore", pWal->vgId, name);
int32_t code = TSDB_CODE_SUCCESS;
size_t offset = 0;
SWalHead *pHead = buffer;
size_t offset = 0;
while (1) { while (1) {
int ret = taosTRead(fd, pHead, sizeof(SWalHead)); int32_t ret = taosTRead(fd, pHead, sizeof(SWalHead));
if (ret == 0) break; if (ret == 0) break;
if (ret < 0) { if (ret < 0) {
wError("wal:%s, failed to read wal head part since %s", name, strerror(errno)); wError("vgId:%d, file:%s, failed to read wal head part since %s", pWal->vgId, name, strerror(errno));
terrno = TAOS_SYSTEM_ERROR(errno); code = TAOS_SYSTEM_ERROR(errno);
break; break;
} }
if (ret < sizeof(SWalHead)) { if (ret < sizeof(SWalHead)) {
wError("wal:%s, failed to read head, ret:%d, skip the rest of file", name, ret); wError("vgId:%d, file:%s, failed to read wal head since %s, read size:%d, skip the rest of file", pWal->vgId,
name, strerror(errno), ret);
taosFtruncate(fd, offset); taosFtruncate(fd, offset);
fsync(fd); fsync(fd);
break; break;
} }
if (!taosCheckChecksumWhole((uint8_t *)pHead, sizeof(SWalHead))) { if (!taosCheckChecksumWhole((uint8_t *)pHead, sizeof(SWalHead))) {
wWarn("wal:%s, cksum is messed up, skip the rest of file", name); wError("vgId:%d, file:%s, wal head cksum is messed up, skip the rest of file", pWal->vgId, name);
terrno = TSDB_CODE_WAL_FILE_CORRUPTED; code = TSDB_CODE_WAL_FILE_CORRUPTED;
ASSERT(false); ASSERT(false);
break; break;
} }
@ -424,22 +237,24 @@ static int walRestoreWalFile(SWal *pWal, void *pVnode, FWalWrite writeFp) {
size = sizeof(SWalHead) + pHead->len; size = sizeof(SWalHead) + pHead->len;
buffer = realloc(buffer, size); buffer = realloc(buffer, size);
if (buffer == NULL) { if (buffer == NULL) {
terrno = TAOS_SYSTEM_ERROR(errno); wError("vgId:%d, file:%s, failed to open for restore since %s", pWal->vgId, name, strerror(errno));
code = TAOS_SYSTEM_ERROR(errno);
break; break;
} }
pHead = (SWalHead *)buffer; pHead = buffer;
} }
ret = taosTRead(fd, pHead->cont, pHead->len); ret = taosTRead(fd, pHead->cont, pHead->len);
if (ret < 0) { if (ret < 0) {
wError("wal:%s failed to read wal body part since %s", name, strerror(errno)); wError("vgId:%d, file:%s failed to read wal body part since %s", pWal->vgId, name, strerror(errno));
terrno = TAOS_SYSTEM_ERROR(errno); code = TAOS_SYSTEM_ERROR(errno);
break; break;
} }
if (ret < pHead->len) { if (ret < pHead->len) {
wError("wal:%s, failed to read body, len:%d ret:%d, skip the rest of file", name, pHead->len, ret); wError("vgId:%d, file:%s, failed to read body since %s, read size:%d len:%d , skip the rest of file", pWal->vgId,
name, strerror(errno), ret, pHead->len);
taosFtruncate(fd, offset); taosFtruncate(fd, offset);
fsync(fd); fsync(fd);
break; break;
@ -448,102 +263,16 @@ static int walRestoreWalFile(SWal *pWal, void *pVnode, FWalWrite writeFp) {
offset = offset + sizeof(SWalHead) + pHead->len; offset = offset + sizeof(SWalHead) + pHead->len;
if (pWal->keep) pWal->version = pHead->version; if (pWal->keep) pWal->version = pHead->version;
wTrace("vgId:%d, restore version:%" PRIu64 ", fileId:%" PRId64, pWal->vgId, pWal->version, pWal->fileId);
(*writeFp)(pVnode, pHead, TAOS_QTYPE_WAL); (*writeFp)(pVnode, pHead, TAOS_QTYPE_WAL);
} }
close(fd); close(fd);
free(buffer); tfree(buffer);
return terrno; return code;
}
int walHandleExistingFiles(const char *path) {
char oname[TSDB_FILENAME_LEN * 3];
char nname[TSDB_FILENAME_LEN * 3];
char opath[TSDB_FILENAME_LEN];
snprintf(opath, sizeof(opath), "%s/old", path);
struct dirent *ent;
DIR *dir = opendir(path);
int plen = strlen(walPrefix);
terrno = 0;
int midx = walGetMaxOldFileId(opath);
int count = 0;
while ((ent = readdir(dir)) != NULL) {
if (strncmp(ent->d_name, walPrefix, plen) == 0) {
midx++;
snprintf(oname, sizeof(oname), "%s/%s", path, ent->d_name);
snprintf(nname, sizeof(nname), "%s/old/wal%d", path, midx);
if (taosMkDir(opath, 0755) != 0) {
wError("wal:%s, failed to create directory:%s(%s)", oname, opath, strerror(errno));
terrno = TAOS_SYSTEM_ERROR(errno);
break;
}
if (rename(oname, nname) < 0) {
wError("wal:%s, failed to move to new:%s", oname, nname);
terrno = TAOS_SYSTEM_ERROR(errno);
break;
}
count++;
}
wDebug("wal:%s, %d files are moved for restoration", path, count);
}
closedir(dir);
return terrno;
}
static int walRemoveWalFiles(const char *path) {
int plen = strlen(walPrefix);
char name[TSDB_FILENAME_LEN * 3];
terrno = 0;
struct dirent *ent;
DIR *dir = opendir(path);
if (dir == NULL && errno == ENOENT) return 0;
if (dir == NULL) {
terrno = TAOS_SYSTEM_ERROR(errno);
return terrno;
}
while ((ent = readdir(dir)) != NULL) {
if (strncmp(ent->d_name, walPrefix, plen) == 0) {
snprintf(name, sizeof(name), "%s/%s", path, ent->d_name);
if (remove(name) < 0) {
wError("wal:%s, failed to remove(%s)", name, strerror(errno));
terrno = TAOS_SYSTEM_ERROR(errno);
}
}
}
closedir(dir);
return terrno;
}
static void walProcessFsyncTimer(void *param, void *tmrId) {
SWal *pWal = param;
if (pWal->signature != pWal) return;
if (pWal->fd < 0) return;
if (fsync(pWal->fd) < 0) {
wError("wal:%s, fsync failed(%s)", pWal->name, strerror(errno));
}
if (walNeedFsyncTimer(pWal)) {
pWal->timer = taosTmrStart(walProcessFsyncTimer, pWal->fsyncPeriod, pWal, walTmrCtrl);
} else {
wInfo("wal:%s, stop fsync timer for walLevel:%d fsyncPeriod:%d", pWal->name, pWal->level, pWal->fsyncPeriod);
taosTmrStop(pWal->timer);
pWal->timer = NULL;
}
} }
int64_t walGetVersion(twalh param) { int64_t walGetVersion(twalh param) {
@ -552,29 +281,3 @@ int64_t walGetVersion(twalh param) {
return pWal->version; return pWal->version;
} }
static int walGetMaxOldFileId(char *odir) {
int midx = 0;
DIR * dir = NULL;
struct dirent *dp = NULL;
int plen = strlen(walPrefix);
if (access(odir, F_OK) != 0) return midx;
dir = opendir(odir);
if (dir == NULL) {
wError("failed to open directory %s since %s", odir, strerror(errno));
terrno = TAOS_SYSTEM_ERROR(errno);
return -1;
}
while ((dp = readdir(dir)) != NULL) {
if (strncmp(dp->d_name, walPrefix, plen) == 0) {
int idx = atol(dp->d_name + plen);
if (midx < idx) midx = idx;
}
}
closedir(dir);
return midx;
}

8
src/wal/test/waltest.c
View File

@ -115,17 +115,17 @@ int main(int argc, char *argv[]) {
printf("%d wal files are written\n", total); printf("%d wal files are written\n", total);
uint32_t index = 0; int64_t index = 0;
char name[256]; char name[256];
while (1) { while (1) {
int code = walGetWalFile(pWal, name, &index); int code = walGetWalFile(pWal, name, &index);
if (code == -1) { if (code == -1) {
printf("failed to get wal file, index:%d\n", index); printf("failed to get wal file, index:%" PRId64 "\n", index);
break; break;
} }
printf("index:%d wal:%s\n", index, name); printf("index:%" PRId64 " wal:%s\n", index, name);
if (code == 0) break; if (code == 0) break;
index++; index++;

2
tests/script/unique/dnode/offline1.sim
View File

@ -49,7 +49,7 @@ print dnode1 $data4_2
if $data4_1 != ready then if $data4_1 != ready then
return -1 return -1
endi endi
if $data4_2 != offline then if $data4_2 == ready then
return -1 return -1
endi endi