/*
* transfer_single_new_db()
*
* create links for mappings stored in "maps" array.
*/
static void
transfer_single_new_db(FileNameMap *maps, int size, char *old_tablespace)
{
int mapnum;
bool vm_crashsafe_match = true;
/*
* Do the old and new cluster disagree on the crash-safetiness of the vm
* files? If so, do not copy them.
*/
if (old_cluster.controldata.cat_ver < VISIBILITY_MAP_CRASHSAFE_CAT_VER &&
new_cluster.controldata.cat_ver >= VISIBILITY_MAP_CRASHSAFE_CAT_VER)
vm_crashsafe_match = false;
for (mapnum = 0; mapnum < size; mapnum++)
{
if (old_tablespace == NULL ||
strcmp(maps[mapnum].old_tablespace, old_tablespace) == 0)
{
/* transfer primary file */
transfer_relfile(&maps[mapnum], "");
/* fsm/vm files added in PG 8.4 */
if (GET_MAJOR_VERSION(old_cluster.major_version) >= 804)
{
/*
* Copy/link any fsm and vm files, if they exist
*/
transfer_relfile(&maps[mapnum], "_fsm");
if (vm_crashsafe_match)
transfer_relfile(&maps[mapnum], "_vm");
}
}
}
}
/*
* transfer_single_new_db()
*
* create links for mappings stored in "maps" array.
*/
static void
transfer_single_new_db(pageCnvCtx *pageConverter,
FileNameMap *maps, int size)
{
char old_dir[MAXPGPATH];
struct dirent **namelist = NULL;
int numFiles = 0;
int mapnum;
int fileno;
old_dir[0] = '\0';
for (mapnum = 0; mapnum < size; mapnum++)
{
char old_file[MAXPGPATH];
char new_file[MAXPGPATH];
/* Changed tablespaces? Need a new directory scan? */
if (strcmp(maps[mapnum].old_dir, old_dir) != 0)
{
if (numFiles > 0)
{
for (fileno = 0; fileno < numFiles; fileno++)
pg_free(namelist[fileno]);
pg_free(namelist);
}
snprintf(old_dir, sizeof(old_dir), "%s", maps[mapnum].old_dir);
numFiles = pg_scandir(old_dir, &namelist, NULL);
}
/* Copying files might take some time, so give feedback. */
snprintf(old_file, sizeof(old_file), "%s/%u", maps[mapnum].old_dir,
maps[mapnum].old_relfilenode);
snprintf(new_file, sizeof(new_file), "%s/%u", maps[mapnum].new_dir,
maps[mapnum].new_relfilenode);
pg_log(PG_REPORT, OVERWRITE_MESSAGE, old_file);
/*
* Copy/link the relation file to the new cluster
*/
unlink(new_file);
transfer_relfile(pageConverter, old_file, new_file,
maps[mapnum].nspname, maps[mapnum].relname);
/* fsm/vm files added in PG 8.4 */
if (GET_MAJOR_VERSION(old_cluster.major_version) >= 804)
{
/*
* Copy/link any fsm and vm files, if they exist
*/
snprintf(scandir_file_pattern, sizeof(scandir_file_pattern), "%u_",
maps[mapnum].old_relfilenode);
for (fileno = 0; fileno < numFiles; fileno++)
{
if (strncmp(namelist[fileno]->d_name, scandir_file_pattern,
strlen(scandir_file_pattern)) == 0)
{
snprintf(old_file, sizeof(old_file), "%s/%s", maps[mapnum].old_dir,
namelist[fileno]->d_name);
snprintf(new_file, sizeof(new_file), "%s/%u%s", maps[mapnum].new_dir,
maps[mapnum].new_relfilenode, strchr(namelist[fileno]->d_name, '_'));
unlink(new_file);
transfer_relfile(pageConverter, old_file, new_file,
maps[mapnum].nspname, maps[mapnum].relname);
}
}
}
/*
* Now copy/link any related segments as well. Remember, PG breaks
* large files into 1GB segments, the first segment has no extension,
* subsequent segments are named relfilenode.1, relfilenode.2,
* relfilenode.3, ... 'fsm' and 'vm' files use underscores so are not
* copied.
*/
snprintf(scandir_file_pattern, sizeof(scandir_file_pattern), "%u.",
maps[mapnum].old_relfilenode);
for (fileno = 0; fileno < numFiles; fileno++)
{
if (strncmp(namelist[fileno]->d_name, scandir_file_pattern,
strlen(scandir_file_pattern)) == 0)
{
snprintf(old_file, sizeof(old_file), "%s/%s", maps[mapnum].old_dir,
namelist[fileno]->d_name);
snprintf(new_file, sizeof(new_file), "%s/%u%s", maps[mapnum].new_dir,
maps[mapnum].new_relfilenode, strchr(namelist[fileno]->d_name, '.'));
unlink(new_file);
transfer_relfile(pageConverter, old_file, new_file,
maps[mapnum].nspname, maps[mapnum].relname);
}
}
}
if (numFiles > 0)
{
for (fileno = 0; fileno < numFiles; fileno++)
pg_free(namelist[fileno]);
pg_free(namelist);
}
}
/*
* transfer_single_new_db()
*
* create links for mappings stored in "maps" array.
*/
static void
transfer_single_new_db(pageCnvCtx *pageConverter,
FileNameMap *maps, int size)
{
char old_dir[MAXPGPATH];
struct dirent **namelist = NULL;
int numFiles = 0;
int mapnum;
int fileno;
bool vm_crashsafe_change = false;
old_dir[0] = '\0';
/* Do not copy non-crashsafe vm files for binaries that assume crashsafety */
if (old_cluster.controldata.cat_ver < VISIBILITY_MAP_CRASHSAFE_CAT_VER &&
new_cluster.controldata.cat_ver >= VISIBILITY_MAP_CRASHSAFE_CAT_VER)
vm_crashsafe_change = true;
for (mapnum = 0; mapnum < size; mapnum++)
{
char old_file[MAXPGPATH];
char new_file[MAXPGPATH];
/* Changed tablespaces? Need a new directory scan? */
if (strcmp(maps[mapnum].old_dir, old_dir) != 0)
{
if (numFiles > 0)
{
for (fileno = 0; fileno < numFiles; fileno++)
pg_free(namelist[fileno]);
pg_free(namelist);
}
snprintf(old_dir, sizeof(old_dir), "%s", maps[mapnum].old_dir);
numFiles = pg_scandir(old_dir, &namelist, NULL);
}
/* Copying files might take some time, so give feedback. */
snprintf(old_file, sizeof(old_file), "%s/%u", maps[mapnum].old_dir,
maps[mapnum].old_relfilenode);
snprintf(new_file, sizeof(new_file), "%s/%u", maps[mapnum].new_dir,
maps[mapnum].new_relfilenode);
pg_log(PG_REPORT, OVERWRITE_MESSAGE, old_file);
/*
* Copy/link the relation file to the new cluster
*/
unlink(new_file);
transfer_relfile(pageConverter, old_file, new_file,
maps[mapnum].nspname, maps[mapnum].relname);
/* fsm/vm files added in PG 8.4 */
if (GET_MAJOR_VERSION(old_cluster.major_version) >= 804)
{
/*
* Copy/link any fsm and vm files, if they exist
*/
snprintf(scandir_file_pattern, sizeof(scandir_file_pattern), "%u_",
maps[mapnum].old_relfilenode);
for (fileno = 0; fileno < numFiles; fileno++)
{
char *vm_offset = strstr(namelist[fileno]->d_name, "_vm");
bool is_vm_file = false;
/* Is a visibility map file? (name ends with _vm) */
if (vm_offset && strlen(vm_offset) == strlen("_vm"))
is_vm_file = true;
if (strncmp(namelist[fileno]->d_name, scandir_file_pattern,
strlen(scandir_file_pattern)) == 0 &&
(!is_vm_file || !vm_crashsafe_change))
{
snprintf(old_file, sizeof(old_file), "%s/%s", maps[mapnum].old_dir,
namelist[fileno]->d_name);
snprintf(new_file, sizeof(new_file), "%s/%u%s", maps[mapnum].new_dir,
maps[mapnum].new_relfilenode, strchr(namelist[fileno]->d_name, '_'));
unlink(new_file);
transfer_relfile(pageConverter, old_file, new_file,
maps[mapnum].nspname, maps[mapnum].relname);
}
}
}
/*
* Now copy/link any related segments as well. Remember, PG breaks
* large files into 1GB segments, the first segment has no extension,
* subsequent segments are named relfilenode.1, relfilenode.2,
* relfilenode.3, ... 'fsm' and 'vm' files use underscores so are not
* copied.
*/
snprintf(scandir_file_pattern, sizeof(scandir_file_pattern), "%u.",
maps[mapnum].old_relfilenode);
for (fileno = 0; fileno < numFiles; fileno++)
{
if (strncmp(namelist[fileno]->d_name, scandir_file_pattern,
strlen(scandir_file_pattern)) == 0)
{
snprintf(old_file, sizeof(old_file), "%s/%s", maps[mapnum].old_dir,
namelist[fileno]->d_name);
snprintf(new_file, sizeof(new_file), "%s/%u%s", maps[mapnum].new_dir,
maps[mapnum].new_relfilenode, strchr(namelist[fileno]->d_name, '.'));
unlink(new_file);
transfer_relfile(pageConverter, old_file, new_file,
maps[mapnum].nspname, maps[mapnum].relname);
}
}
}
if (numFiles > 0)
{
for (fileno = 0; fileno < numFiles; fileno++)
pg_free(namelist[fileno]);
pg_free(namelist);
}
}
