8000 Build and test pg_rewind with encrypted WAL by dAdAbird · Pull Request #97 · percona/postgres · GitHub
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Build and test pg_rewind with encrypted WAL #97

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Build and test pg_rewind with encrypted WAL #97

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3ee3048
Build and test pg_rewind with encrypted WAL
dAdAbird Feb 28, 2025
ea401ce
Fix TLI change with encrypted WAL
dAdAbird Mar 7, 2025
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Fix TLI change with encrypted WAL 
Copying data to the segment with updated TLI requires re-encrypting
it if it is encrypted.
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@dAdAbird
dAdAbird committed Mar 7, 2025
commit ea401cee5a491d4b2908aebcd14f05176fba513c
9 changes: 7 additions & 2 deletions src/backend/access/transam/xlog.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3423,6 +3423,8 @@ XLogFileCopy(TimeLineID destTLI, XLogSegNo destsegno,
int srcfd;
int fd;
int nbytes;
off_t read_pos = 0;
off_t write_pos = 0;

/*
* Open the source file
Expand Down Expand Up @@ -3471,7 +3473,8 @@ XLogFileCopy(TimeLineID destTLI, XLogSegNo destsegno,
if (nread > sizeof(buffer))
nread = sizeof(buffer);
pgstat_report_wait_start(WAIT_EVENT_WAL_COPY_READ);
r = read(srcfd, buffer.data, nread);
r = xlog_smgr->seg_read(srcfd, buffer.data, nread, read_pos,
srcTLI, srcsegno, wal_segment_size);
if (r != nread)
{
if (r < 0)
Expand All @@ -3486,10 +3489,11 @@ XLogFileCopy(TimeLineID destTLI, XLogSegNo destsegno,
path, r, (Size) nread)));
}
pgstat_report_wait_end();
read_pos += nread;
}
errno = 0;
pgstat_report_wait_start(WAIT_EVENT_WAL_COPY_WRITE);
if ((int) write(fd, buffer.data, sizeof(buffer)) != (int) sizeof(buffer))
if ((int) xlog_smgr->seg_write(fd, buffer.data, sizeof(buffer), write_pos, destTLI, destsegno) != (int) sizeof(buffer))
{
int save_errno = errno;

Expand All @@ -3505,6 +3509,7 @@ XLogFileCopy(TimeLineID destTLI, XLogSegNo destsegno,
errmsg("could not write to file \& 58BF quot;%s\": %m", tmppath)));
}
pgstat_report_wait_end();
write_pos += sizeof(buffer);
}

pgstat_report_wait_start(WAIT_EVENT_WAL_COPY_SYNC);
Expand Down
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