From: =?iso-8859-1?Q?Roar_Thron=E6s?= <roart@nvg.ntnu.no> To: freebsd-hackers@FreeBSD.org Subject: large master.passwd Message-ID: <Pine.GS4.4.10.9905141040560.875-100000@phoenix.nvg.ntnu.no> In-Reply-To: <XFMail.990513222354.gbuchana@home.com>
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Hi
On a site with 20k users in the master.passwd, and where NIS is not
trusted, the master.passwd is distributed to each workstation.
The pwd.db and spwd.db are sized around 10Mb.
Sometimes, those .db files get corrupt.
I suspect it has something to do with the machines being reset etc before
the sync is finished. (The machines are dual-boot, and there are a lot of
users around.)
I did some patching, and have not seen corrupted .db-files since.
So how usable is this patch?
Worth intregrating?
Regards,
Roar Thronęs
--- ../../3.1-RELEASE/src/usr.sbin/pwd_mkdb/pwd_mkdb.c Tue Apr 20
09:52:58 1999
+++ pwd_mkdb.c Tue Apr 20 11:07:53 1999
@@ -71,7 +71,7 @@
4096, /* bsize */
32, /* ffactor */
256, /* nelem */
- 2048 * 1024, /* cachesize */
+ 8192 * 1024, /* cachesize */
NULL, /* hash() */
0 /* lorder */
};
@@ -457,6 +457,10 @@
/* Set master.passwd permissions, in case caller forgot. */
(void)fchmod(fileno(fp), S_IRUSR|S_IWUSR);
+ /* sync may be wise
+ -roart */
+ sync();
+
/* Install as the real password files. */
(void)snprintf(buf, sizeof(buf), "%s/%s.tmp", prefix, _MP_DB);
(void)snprintf(buf2, sizeof(buf2), "%s/%s", prefix, _MP_DB);
@@ -477,6 +481,10 @@
*/
(void)snprintf(buf, sizeof(buf), "%s/%s", prefix, _MASTERPASSWD);
mv(pname, buf);
+
+ /* sync may be wise
+ -roart */
+ sync();
/*
* Close locked password file after rename()
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