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Fix a bug to handle deleted files during backup. We should skipp those missing files during validation and restore.

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git-svn-id: http://pg-rman.googlecode.com/svn/trunk@30 182aca00-e38e-11de-a668-6fd11605f5ce
This commit is contained in:
itagaki.takahiro
2010-01-21 08:40:29 +00:00
parent 18b133c544
commit 2b4c33e263
3 changed files with 47 additions and 37 deletions
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26
backup.c
View File

@@ -856,8 +856,10 @@ backup_files(const char *from_root,
{
if (errno == ENOENT)
{
/* record as skipped file in file_xxx.txt */
file->write_size = BYTES_INVALID;
if (verbose)
printf(_("deleted\n"));
printf(_("skip\n"));
continue;
}
else
@@ -921,21 +923,17 @@ backup_files(const char *from_root,
}
/* copy the file into backup */
if (file->is_datafile)
if (!(file->is_datafile
? backup_data_file(from_root, to_root, file, lsn, compress)
: copy_file(from_root, to_root, file,
compress ? COMPRESSION : NO_COMPRESSION)))
{
backup_data_file(from_root, to_root, file, lsn, compress);
if (file->write_size == 0 && file->read_size > 0)
{
/* record as skipped file in file_xxx.txt */
file->write_size = BYTES_INVALID;
if (verbose)
printf(_("skip\n"));
continue;
}
/* record as skipped file in file_xxx.txt */
file->write_size = BYTES_INVALID;
if (verbose)
printf(_("skip\n"));
continue;
}
else
copy_file(from_root, to_root, file,
compress ? COMPRESSION : NO_COMPRESSION);
if (verbose)
{

54
data.c
View File

@@ -272,7 +272,7 @@ parse_page(const DataPage *page, int server_version,
* If lsn is not NULL, pages only which are modified after the lsn will be
* copied.
*/
void
bool
backup_data_file(const char *from_root, const char *to_root,
pgFile *file, const XLogRecPtr *lsn, bool compress)
{
@@ -291,13 +291,22 @@ backup_data_file(const char *from_root, const char *to_root,
char outbuf[zlibOutSize];
#endif
INIT_CRC32(crc);
/* reset size summary */
file->read_size = 0;
file->write_size = 0;
/* open backup mode file for read */
in = fopen(file->path, "r");
if (in == NULL)
{
/* meybe vanished, it's not error */
FIN_CRC32(crc);
file->crc = crc;
/* maybe vanished, it's not error */
if (errno == ENOENT)
return;
return false;
elog(ERROR_SYSTEM, _("can't open backup mode file \"%s\": %s"),
file->path, strerror(errno));
@@ -317,12 +326,6 @@ backup_data_file(const char *from_root, const char *to_root,
to_path, strerror(errno_tmp));
}
INIT_CRC32(crc);
/* reset size summary */
file->read_size = 0;
file->write_size = 0;
#ifdef HAVE_LIBZ
if (compress)
{
@@ -365,9 +368,8 @@ backup_data_file(const char *from_root, const char *to_root,
fclose(in);
fclose(out);
file->is_datafile = false;
copy_file(from_root, to_root, file,
compress ? COMPRESSION : NO_COMPRESSION);
return;
return copy_file(from_root, to_root, file,
compress ? COMPRESSION : NO_COMPRESSION);
}
file->read_size += read_len;
@@ -540,13 +542,18 @@ backup_data_file(const char *from_root, const char *to_root,
/* We do not backup if all pages skipped. */
if (file->write_size == 0 && file->read_size > 0)
{
if (remove(to_path) == -1)
elog(ERROR_SYSTEM, _("can't remove file \"%s\": %s"), to_path,
strerror(errno));
return false;
}
/* remove $BACKUP_PATH/tmp created during check */
if (check)
remove(to_path);
return true;
}
/*
@@ -746,7 +753,7 @@ restore_data_file(const char *from_root,
fclose(out);
}
void
bool
copy_file(const char *from_root, const char *to_root, pgFile *file,
CompressionMode mode)
{
@@ -765,13 +772,22 @@ copy_file(const char *from_root, const char *to_root, pgFile *file,
char inbuf[zlibInSize];
#endif
INIT_CRC32(crc);
/* reset size summary */
file->read_size = 0;
file->write_size = 0;
/* open backup mode file for read */
in = fopen(file->path, "r");
if (in == NULL)
{
/* meybe deleted, it's not error */
FIN_CRC32(crc);
file->crc = crc;
/* maybe deleted, it's not error */
if (errno == ENOENT)
return;
return false;
elog(ERROR_SYSTEM, _("can't open source file \"%s\": %s"), file->path,
strerror(errno));
@@ -798,12 +814,6 @@ copy_file(const char *from_root, const char *to_root, pgFile *file,
strerror(errno));
}
INIT_CRC32(crc);
/* reset size summary */
file->read_size = 0;
file->write_size = 0;
#ifdef HAVE_LIBZ
z.zalloc = Z_NULL;
z.zfree = Z_NULL;
@@ -962,4 +972,6 @@ copy_file(const char *from_root, const char *to_root, pgFile *file,
if (check)
remove(to_path);
return true;
}

4
pg_rman.h
View File

@@ -249,11 +249,11 @@ extern bool xlog_logfname2lsn(const char *logfname, XLogRecPtr *lsn);
extern void xlog_fname(char *fname, size_t len, TimeLineID tli, XLogRecPtr *lsn);
/* in data.c */
extern void backup_data_file(const char *from_root, const char *to_root,
extern bool backup_data_file(const char *from_root, const char *to_root,
pgFile *file, const XLogRecPtr *lsn, bool compress);
extern void restore_data_file(const char *from_root, const char *to_root,
pgFile *file, bool compress);
extern void copy_file(const char *from_root, const char *to_root,
extern bool copy_file(const char *from_root, const char *to_root,
pgFile *file, CompressionMode compress);
/* in util.c */