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Report expected contrecord length on mismatch

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When reading a WAL record fails to find continuation record(s) of the
proper length, report what it expects, for clarity.

Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/20200903212152.GA15319@alvherre.pgsql
This commit is contained in:
Alvaro Herrera 2020-09-04 14:58:32 -04:00
parent 38a2d70329
commit f43e295f68
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GPG Key ID: 1C20ACB9D5C564AE
1 changed files with 2 additions and 1 deletions
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3
src/backend/access/transam/xlogreader.c
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@ -464,8 +464,9 @@ XLogReadRecord(XLogReaderState *state, char **errormsg)
total_len != (pageHeader->xlp_rem_len + gotlen)) total_len != (pageHeader->xlp_rem_len + gotlen))
{ {
report_invalid_record(state, report_invalid_record(state,
"invalid contrecord length %u at %X/%X", "invalid contrecord length %u (expected %lld) at %X/%X",
pageHeader->xlp_rem_len, pageHeader->xlp_rem_len,
((long long) total_len) - gotlen,
(uint32) (RecPtr >> 32), (uint32) RecPtr); (uint32) (RecPtr >> 32), (uint32) RecPtr);
goto err; goto err;
} }