xxq250
/
homework-jianmu
1
0
Fork 0
Code Issues Pull Requests 1 Actions Packages Projects Releases Wiki Activity

old wal of sdb is deleted after recovery

This commit is contained in:
slguan 2020-04-17 16:36:31 +08:00
parent ecc95e7054
commit f3b76d1acf
1 changed files with 42 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
src/wal/src/walMain.c
View File

@ -52,6 +52,7 @@ static uint32_t walSignature = 0xFAFBFDFE;
static int walHandleExistingFiles(const char *path);
static int walRestoreWalFile(const char *name, void *pVnode, FWalWrite writeFp);
static int walRemoveWalFiles(const char *path);
static int walMoveOldWalFilesBack(const char *path);
void *walOpen(const char *path, const SWalCfg *pCfg) {
SWal *pWal = calloc(sizeof(SWal), 1);
@ -213,7 +214,11 @@ int walRestore(void *handle, void *pVnode, int (*writeFp)(void *, void *, int))
}
if (code == 0) {
if (pWal->keep) {
code = walMoveOldWalFilesBack(pWal->path);
} else {
code = walRemoveWalFiles(opath);
}
if (code == 0) {
if (remove(opath) < 0) {
wError("wal:%s, failed to remove directory(%s)", opath, strerror(errno));
@ -365,4 +370,40 @@ static int walRemoveWalFiles(const char *path) {
return code;
}
int walMoveOldWalFilesBack(const char *path) {
char oname[TSDB_FILENAME_LEN * 3];
char nname[TSDB_FILENAME_LEN * 3];
char opath[TSDB_FILENAME_LEN];
struct dirent *ent;
int plen = strlen(walPrefix);
int code = 0;
sprintf(opath, "%s/old", path);
if (access(opath, F_OK) == 0) {
// move all old files to wal directory
int count = 0;
DIR *dir = opendir(opath);
while ((ent = readdir(dir))!= NULL) {
if ( strncmp(ent->d_name, walPrefix, plen) == 0) {
sprintf(oname, "%s/%s", opath, ent->d_name);
sprintf(nname, "%s/%s", path, ent->d_name);
if (rename(oname, nname) < 0) {
wError("wal:%s, failed to move to new:%s", oname, nname);
code = -1;
break;
}
count++;
}
}
wTrace("wal:%s, %d old files are move back for keep option is set", path, count);
closedir(dir);
}
return code;
}