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Merge pull request #3977 from taosdata/hotfix/TD-1759 

fix TD-1759
This commit is contained in:
Shengliang Guan 2020-10-23 17:52:31 +08:00 committed by GitHub
parent 2f2e5b671d 1f279b72e8
commit bcac36ad4a
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 47 additions and 25 deletions
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72
src/wal/src/walMain.c
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@ -60,6 +60,7 @@ 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");
@ -312,7 +313,7 @@ int walRestore(void *handle, void *pVnode, int (*writeFp)(void *, void *, int))
for (index = minId; index <= maxId; ++index) {
snprintf(pWal->name, sizeof(pWal->name), "%s/%s%d", opath, walPrefix, index);
terrno = walRestoreWalFile(pWal, pVnode, writeFp);
if (terrno < 0) break;
if (terrno < 0) continue;
}
}
@ -476,31 +477,26 @@ int walHandleExistingFiles(const char *path) {
int plen = strlen(walPrefix);
terrno = 0;
if (access(opath, F_OK) == 0) {
// old directory is there, it means restore process is not finished
walRemoveWalFiles(path);
} else {
// move all files to old directory
int count = 0;
while ((ent = readdir(dir)) != NULL) {
if (strncmp(ent->d_name, walPrefix, plen) == 0) {
snprintf(oname, sizeof(oname), "%s/%s", path, ent->d_name);
snprintf(nname, sizeof(nname), "%s/old/%s", path, ent->d_name);
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++;
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);
@ -563,4 +559,30 @@ int64_t walGetVersion(twalh param) {
if (pWal == 0) return 0;
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;
}