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Update HINT for pre-existing shared memory block.

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One should almost always terminate an old process, not use a manual
removal tool like ipcrm.  Removal of the ipcclean script eleven years
ago (39627b1ae6) and its non-replacement
corroborate that manual shm removal is now a niche goal.  Back-patch to
9.4 (all supported versions).

Reviewed by Daniel Gustafsson and Kyotaro HORIGUCHI.

Discussion: https://postgr.es/m/20180812064815.GB2301738@rfd.leadboat.com
This commit is contained in:
Noah Misch 2019-03-31 19:32:48 -07:00
parent 4d6bd92db5
commit ab7590e919
1 changed files with 3 additions and 7 deletions
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10
src/backend/utils/init/miscinit.c
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@ -1066,14 +1066,10 @@ CreateLockFile(const char *filename, bool amPostmaster,
if (PGSharedMemoryIsInUse(id1, id2))
ereport(FATAL,
(errcode(ERRCODE_LOCK_FILE_EXISTS),
errmsg("pre-existing shared memory block "
"(key %lu, ID %lu) is still in use",
errmsg("pre-existing shared memory block (key %lu, ID %lu) is still in use",
id1, id2),
errhint("If you're sure there are no old "
"server processes still running, remove "
"the shared memory block "
"or just delete the file \"%s\".",
filename)));
errhint("Terminate any old server processes associated with data directory \"%s\".",
refName)));
}
}