Re: Updated backup APIs for non-exclusive backups

Hi Magnus,

I've finally found some time to take a look to the patch.

It applies with some fuzziness on master, but the result looks correct.
Unfortunately the OID of the new pg_stop_backup function conflicts with
"pg_blocking_pids()" patch (52f5d578d6c29bf254e93c69043b817d4047ca67).

After changing it the patch does not compile:

gcc -Wall -Wmissing-prototypes -Wpointer-arith
-Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute
-Wformat-security -fno-strict-aliasing -fwrapv
-Wno-unused-command-line-argument -g -O0 -g -fno-omit-frame-pointer
-I../../../../src/include
-I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/usr/include/libxml2
-I/usr/local/include -I/usr/local/opt/openssl/include -c -o xlog.o
xlog.c -MMD -MP -MF .deps/xlog.Po
xlog.c:10000:19: error: use of undeclared identifier 'tblspc_mapfbuf';
did you mean 'tblspcmapfile'?
initStringInfo(&tblspc_mapfbuf);
^~~~~~~~~~~~~~
tblspcmapfile
xlog.c:9790:19: note: 'tblspcmapfile' declared here
StringInfo tblspcmapfile, bool infotbssize,
^
xlog.c:10073:22: error: use of undeclared identifier 'tblspc_mapfbuf';
did you mean 'tblspcmapfile'?
appendStringInfo(&tblspc_mapfbuf, "%s %s\n", ti->oid, ti->path);
^~~~~~~~~~~~~~
tblspcmapfile
xlog.c:9790:19: note: 'tblspcmapfile' declared here
StringInfo tblspcmapfile, bool infotbssize,
^
xlog.c:10092:19: error: use of undeclared identifier 'labelfbuf'; did
you mean 'labelfile'?
initStringInfo(&labelfbuf);
^~~~~~~~~
labelfile
xlog.c:9789:19: note: 'labelfile' declared here
StringInfo labelfile, DIR *tblspcdir, List **tablespaces,
^
xlog.c:10099:21: error: use of undeclared identifier 'labelfbuf'; did
you mean 'labelfile'?
appendStringInfo(&labelfbuf, "START WAL LOCATION: %X/%X (file %s)\n",
^~~~~~~~~
labelfile
xlog.c:9789:19: note: 'labelfile' declared here
StringInfo labelfile, DIR *tblspcdir, List **tablespaces,
^
xlog.c:10101:21: error: use of undeclared identifier 'labelfbuf'; did
you mean 'labelfile'?
appendStringInfo(&labelfbuf, "CHECKPOINT LOCATION: %X/%X\n",
^~~~~~~~~
labelfile
xlog.c:9789:19: note: 'labelfile' declared here
StringInfo labelfile, DIR *tblspcdir, List **tablespaces,
^
xlog.c:10103:21: error: use of undeclared identifier 'labelfbuf'; did
you mean 'labelfile'?
appendStringInfo(&labelfbuf, "BACKUP METHOD: %s\n",
^~~~~~~~~
labelfile
xlog.c:9789:19: note: 'labelfile' declared here
StringInfo labelfile, DIR *tblspcdir, List **tablespaces,
^
xlog.c:10105:21: error: use of undeclared identifier 'labelfbuf'; did
you mean 'labelfile'?
appendStringInfo(&labelfbuf, "BACKUP FROM: %s\n",
^~~~~~~~~
labelfile
xlog.c:9789:19: note: 'labelfile' declared here
StringInfo labelfile, DIR *tblspcdir, List **tablespaces,
^
xlog.c:10107:21: error: use of undeclared identifier 'labelfbuf'; did
you mean 'labelfile'?
appendStringInfo(&labelfbuf, "START TIME: %s\n", strfbuf);
^~~~~~~~~
labelfile
xlog.c:9789:19: note: 'labelfile' declared here
StringInfo labelfile, DIR *tblspcdir, List **tablespaces,
^
xlog.c:10108:21: error: use of undeclared identifier 'labelfbuf'; did
you mean 'labelfile'?
appendStringInfo(&labelfbuf, "LABEL: %s\n", backupidstr);
^~~~~~~~~
labelfile
xlog.c:9789:19: note: 'labelfile' declared here
StringInfo labelfile, DIR *tblspcdir, List **tablespaces,
^
xlog.c:10142:15: error: use of undeclared identifier 'labelfbuf'
if (fwrite(labelfbuf.data, labelfbuf.len, 1, fp) != 1 ||
^
xlog.c:10142:31: error: use of undeclared identifier 'labelfbuf'
if (fwrite(labelfbuf.data, labelfbuf.len, 1, fp) != 1 ||
^
xlog.c:10151:10: error: use of undeclared identifier 'labelfbuf'
pfree(labelfbuf.data);
^
xlog.c:10154:8: error: use of undeclared identifier 'tblspc_mapfbuf'
if (tblspc_mapfbuf.len > 0)
^
xlog.c:10178:16: error: use of undeclared identifier 'tblspc_mapfbuf'
if (fwrite(tblspc_mapfbuf.data, tblspc_mapfbuf.len, 1, fp) != 1 ||
^
xlog.c:10178:37: error: use of undeclared identifier 'tblspc_mapfbuf'
if (fwrite(tblspc_mapfbuf.data, tblspc_mapfbuf.len, 1, fp) != 1 ||
^
xlog.c:10189:10: error: use of undeclared identifier 'tblspc_mapfbuf'
pfree(tblspc_mapfbuf.data);
^
xlog.c:10193:17: error: use of undeclared identifier 'labelfbuf'
*labelfile = labelfbuf.data;
^
xlog.c:10194:8: error: use of undeclared identifier 'tblspc_mapfbuf'
if (tblspc_mapfbuf.len > 0)
^
xlog.c:10195:22: error: use of undeclared identifier 'tblspc_mapfbuf'
*tblspcmapfile = tblspc_mapfbuf.data;
^
19 errors generated.
make[4]: *** [xlog.o] Error 1
make[3]: *** [transam-recursive] Error 2
make[2]: *** [access-recursive] Error 2
make[1]: *** [all-backend-recurse] Error 2
make: *** [all-src-recurse] Error 2

I've searched in past commits for any recent change that involves the
affected lines, but I have not found any.
Maybe some changes are missing?

Regards,
Marco

--
Marco Nenciarini - 2ndQuadrant Italy
PostgreSQL Training, Services and Support
marco(dot)nenciarini(at)2ndQuadrant(dot)it | www.2ndQuadrant.it