Force archive_status of .done for xlogs created by dearchival/replication.
This prevents spurious attempts to archive xlog files after promotion of standby, a bug introduced by cascading replication patch in 9.2. Fujii Masao, simplified and extended to cover streaming by Simon Riggs
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@ -1335,6 +1335,59 @@ XLogArchiveNotifySeg(uint32 log, uint32 seg)
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XLogArchiveNotify(xlog);
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}
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/*
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* XLogArchiveForceDone
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*
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* Emit notification forcibly that an XLOG segment file has been successfully
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* archived, by creating <XLOG>.done regardless of whether <XLOG>.ready
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* exists or not.
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*/
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void
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XLogArchiveForceDone(const char *xlog)
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{
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char archiveReady[MAXPGPATH];
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char archiveDone[MAXPGPATH];
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struct stat stat_buf;
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FILE *fd;
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/* Exit if already known done */
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StatusFilePath(archiveDone, xlog, ".done");
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if (stat(archiveDone, &stat_buf) == 0)
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return;
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/* If .ready exists, rename it to .done */
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StatusFilePath(archiveReady, xlog, ".ready");
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if (stat(archiveReady, &stat_buf) == 0)
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{
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if (rename(archiveReady, archiveDone) < 0)
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ereport(WARNING,
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(errcode_for_file_access(),
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errmsg("could not rename file \"%s\" to \"%s\": %m",
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archiveReady, archiveDone)));
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return;
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}
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/* insert an otherwise empty file called <XLOG>.done */
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fd = AllocateFile(archiveDone, "w");
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if (fd == NULL)
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{
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ereport(LOG,
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(errcode_for_file_access(),
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errmsg("could not create archive status file \"%s\": %m",
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archiveDone)));
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return;
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}
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if (FreeFile(fd))
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{
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ereport(LOG,
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(errcode_for_file_access(),
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errmsg("could not write archive status file \"%s\": %m",
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archiveDone)));
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return;
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}
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}
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/*
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* XLogArchiveCheckDone
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*
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@ -2814,6 +2867,12 @@ XLogFileRead(uint32 log, uint32 seg, int emode, TimeLineID tli,
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*/
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strncpy(path, xlogfpath, MAXPGPATH);
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/*
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* Create .done file forcibly to prevent the restored segment from
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* being archived again later.
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*/
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XLogArchiveForceDone(xlogfname);
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/*
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* If the existing segment was replaced, since walsenders might have
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* it open, request them to reload a currently-open segment.
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@ -66,10 +66,12 @@ walrcv_disconnect_type walrcv_disconnect = NULL;
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#define NAPTIME_PER_CYCLE 100 /* max sleep time between cycles (100ms) */
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/*
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* These variables are used similarly to openLogFile/Id/Seg/Off,
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* but for walreceiver to write the XLOG.
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* These variables are used similarly to openLogFile/SegNo/Off,
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* but for walreceiver to write the XLOG. recvFileTLI is the TimeLineID
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* corresponding the filename of recvFile.
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*/
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static int recvFile = -1;
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static TimeLineID recvFileTLI = 0;
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static uint32 recvId = 0;
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static uint32 recvSeg = 0;
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static uint32 recvOff = 0;
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@ -492,6 +494,8 @@ XLogWalRcvWrite(char *buf, Size nbytes, XLogRecPtr recptr)
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*/
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if (recvFile >= 0)
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{
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char xlogfname[MAXFNAMELEN];
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XLogWalRcvFlush(false);
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/*
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@ -504,6 +508,13 @@ XLogWalRcvWrite(char *buf, Size nbytes, XLogRecPtr recptr)
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(errcode_for_file_access(),
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errmsg("could not close log file %u, segment %u: %m",
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recvId, recvSeg)));
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/*
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* Create .done file forcibly to prevent the restored segment from
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* being archived again later.
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*/
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XLogFileName(xlogfname, recvFileTLI, recvId, recvSeg);
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XLogArchiveForceDone(xlogfname);
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}
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recvFile = -1;
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@ -511,6 +522,7 @@ XLogWalRcvWrite(char *buf, Size nbytes, XLogRecPtr recptr)
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XLByteToSeg(recptr, recvId, recvSeg);
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use_existent = true;
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recvFile = XLogFileInit(recvId, recvSeg, &use_existent, true);
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recvFileTLI = ThisTimeLineID;
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recvOff = 0;
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}
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@ -263,6 +263,11 @@ extern const RmgrData RmgrTable[];
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extern pg_time_t GetLastSegSwitchTime(void);
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extern XLogRecPtr RequestXLogSwitch(void);
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/*
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* Exported to support xlog archive status setting from WALReceiver
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*/
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extern void XLogArchiveForceDone(const char *xlog);
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/*
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* These aren't in xlog.h because I'd rather not include fmgr.h there.
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*/
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