Craig Ringer <ring...@ringerc.id.au> writes:
> PostgreSQL 9.1 isn't compatible with databases from 8.3, so you can't
> actually run Pg 9.1 directly against a datadir from 8.3; that's why I
> suggested the latest 8.3 point release.
> However, your startup should be failing with a message telling you this,
> not with a permissions error then (more importantly) a crash.
Well, the reason that's a PANIC is that ReadControlFile is coded that
way:
fd = BasicOpenFile(XLOG_CONTROL_FILE,
O_RDWR | PG_BINARY,
S_IRUSR | S_IWUSR);
if (fd < 0)
ereport(PANIC,
(errcode_for_file_access(),
errmsg("could not open control file \"%s\": %m",
XLOG_CONTROL_FILE)));
Perhaps it should be only FATAL instead, but that seems like a quibble.
If it can't read pg_control, the server ain't starting.
It is curious though that the OP gets this far, because the server
would previously have tried to read PG_VERSION and postgresql.conf,
which if it were a simple wrong-account problem should likewise
have been unreadable. Your thought about AV software may be the
right explanation.
regards, tom lane
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