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In pg_upgrade, don't copy visibility map files from clusters that did not

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have crash-safe visibility maps to clusters that expect crash-safety.

Request from Robert Haas.
This commit is contained in:
Bruce Momjian 2011-08-19 11:20:30 -04:00
parent ffaf9eca4c
commit 00a7c9014a
2 changed files with 22 additions and 2 deletions
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6
contrib/pg_upgrade/pg_upgrade.h
View File

@ -64,6 +64,12 @@
#define TABLE_SPACE_SUBDIRS_CAT_VER 201001111
/* postmaster/postgres -b (binary_upgrade) flag added during PG 9.1 development */
#define BINARY_UPGRADE_SERVER_FLAG_CAT_VER 201104251
/*
* Visibility map changed with this 9.2 commit,
* 8f9fe6edce358f7904e0db119416b4d1080a83aa; pick later catalog version.
*/
#define VISIBILITY_MAP_CRASHSAFE_CAT_VER 201107031
/*
* Each relation is represented by a relinfo structure.

18
contrib/pg_upgrade/relfilenode.c
View File

@ -120,9 +120,15 @@ transfer_single_new_db(pageCnvCtx *pageConverter,
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];
@ -168,8 +174,16 @@ transfer_single_new_db(pageCnvCtx *pageConverter,
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)
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);