/*
* transfer_relfile()
*
* Copy or link file from old cluster to new one.
*/
static void
transfer_relfile(pageCnvCtx *pageConverter, const char *old_file,
const char *new_file, const char *nspname, const char *relname)
{
const char *msg;
if ((user_opts.transfer_mode == TRANSFER_MODE_LINK) && (pageConverter != NULL))
pg_log(PG_FATAL, "this upgrade requires page-by-page conversion, "
"you must use copy-mode instead of link-mode\n");
if (user_opts.transfer_mode == TRANSFER_MODE_COPY)
{
pg_log(PG_INFO, "copying %s to %s\n", old_file, new_file);
if ((msg = copyAndUpdateFile(pageConverter, old_file, new_file, true)) != NULL)
pg_log(PG_FATAL, "error while copying %s.%s (%s to %s): %s\n",
nspname, relname, old_file, new_file, msg);
}
else
{
pg_log(PG_INFO, "linking %s to %s\n", old_file, new_file);
if ((msg = linkAndUpdateFile(pageConverter, old_file, new_file)) != NULL)
pg_log(PG_FATAL,
"error while creating link from %s.%s (%s to %s): %s\n",
nspname, relname, old_file, new_file, msg);
}
return;
}
/*
* transfer_relfile()
*
* Copy or link file from old cluster to new one.
*/
static void
transfer_relfile(pageCnvCtx *pageConverter, FileNameMap *map,
const char *type_suffix)
{
const char *msg;
char old_file[MAXPGPATH];
char new_file[MAXPGPATH];
int fd;
int segno;
char extent_suffix[65];
/*
* 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.
* copied.
*/
for (segno = 0;; segno++)
{
if (segno == 0)
extent_suffix[0] = '\0';
else
snprintf(extent_suffix, sizeof(extent_suffix), ".%d", segno);
snprintf(old_file, sizeof(old_file), "%s/%u%s%s", map->old_dir,
map->old_relfilenode, type_suffix, extent_suffix);
snprintf(new_file, sizeof(new_file), "%s/%u%s%s", map->new_dir,
map->new_relfilenode, type_suffix, extent_suffix);
/* Is it an extent, fsm, or vm file? */
if (type_suffix[0] != '\0' || segno != 0)
{
/* Did file open fail? */
if ((fd = open(old_file, O_RDONLY, 0)) == -1)
{
/* File does not exist? That's OK, just return */
if (errno == ENOENT)
return;
else
pg_log(PG_FATAL, "error while checking for file existance \"%s.%s\" (\"%s\" to \"%s\"): %s\n",
map->nspname, map->relname, old_file, new_file,
getErrorText(errno));
}
close(fd);
}
unlink(new_file);
/* Copying files might take some time, so give feedback. */
pg_log(PG_REPORT, OVERWRITE_MESSAGE, old_file);
if ((user_opts.transfer_mode == TRANSFER_MODE_LINK) && (pageConverter != NULL))
pg_log(PG_FATAL, "This upgrade requires page-by-page conversion, "
"you must use copy mode instead of link mode.\n");
if (user_opts.transfer_mode == TRANSFER_MODE_COPY)
{
pg_log(PG_VERBOSE, "copying \"%s\" to \"%s\"\n", old_file, new_file);
if ((msg = copyAndUpdateFile(pageConverter, old_file, new_file, true)) != NULL)
pg_log(PG_FATAL, "error while copying relation \"%s.%s\" (\"%s\" to \"%s\"): %s\n",
map->nspname, map->relname, old_file, new_file, msg);
}
else
{
pg_log(PG_VERBOSE, "linking \"%s\" to \"%s\"\n", old_file, new_file);
if ((msg = linkAndUpdateFile(pageConverter, old_file, new_file)) != NULL)
pg_log(PG_FATAL,
"error while creating link for relation \"%s.%s\" (\"%s\" to \"%s\"): %s\n",
map->nspname, map->relname, old_file, new_file, msg);
}
}
return;
}