[Samba] safe to replace just one ldb file?
mourik jan heupink - merit
heupink at merit.unu.edu
Tue Sep 2 10:03:11 MDT 2014
Ok, I took a deep breath and I
- shutdown samba DC on the specific host *only*
- took a good backup of the /var/lib/samba dir
- tdbbackupped all tdb & ldb files in
Then swapped all 7 files, using lines like:
mv sam.ldb sam.ldb.deleted
cp sam.ldb.backup sam.ldb
mv "CN=CONFIGURATION..." "CN=CONFIGURATION....deleted"
cp "CN=CONFIGURATION....backup" "CN=CONFIGURATION...ldb"
Then I started samba again, while looking at /var/log/samba/log.samba,
and noticed a few replications, and no errors at all.
Then checked samba-tool drs showrepl on *all* DC's, no errors, and
latest replication was a few minutes ago. (after the ldb/tdb swap)
ADUC showed all DC's as online, and then as final confirmation:
samba-tool ldapcmp between our three DC's, and no differences reported.
Directory size for /var/lib/samba/private/sam.ldb.d went down from 1.2GB
to approx 53 MB.
So all in all things still look healthy, and I guess tdbbackup can
actually dump ldb and tdb files. :-)
Drink some water before doing this excersise, as you may sweat a bit
(scary stuff...) but in the end you gain a lot of diskspace.
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