On 26/03/2015 8:22 AM, Geoff Swan wrote:
On 26/03/2015 7:20 AM, Quanah Gibson-Mount wrote:
--On Wednesday, March 25, 2015 5:11 PM +1100 Geoff Swan gswan3@bigpond.net.au wrote:
Question is irrelevant since both are sparse files.
Thanks for the clarification Howard. The data file from the mdb_copy snapshot was transferred over the network to the other server using scp, which I understand does not recognise sparse files, so the copy is likely to be non-sparse. I guess this would be considered a corruption and best to start with a fresh copy?
I've had no issue scp'ing files created from mdb_copy.
That is interesting. It's good to know that there is no problem with that. I'll try rebuilding the db file from slapcat/slapadd. I don't know why an scp'd mdb_copy file did not work as intended.
The search stepped off a cliff, going from around 60s to over 10 hours. So I rebuilt the database using slapcat/slapadd and checked that the file is now reporting the correct sizes 569754436 -rw------- 1 ldap ldap 2000000000000 Mar 29 17:26 data.mdb
However after restarting the ldap server and performing the same search, it is taking a huge time (it has not completed yet, after several hours). However the same search on an identical server is returning the results in under 2 seconds. Checked that slapd.conf is identical, and that the modifyTimestamp is indexed (which is what is being searched on). Is there a way to check that the indexes are OK? It is almost as if this index is not present, or has exceeded some internal buffer limit?
Original host:
zimbra@zre-ldap002:~/data/ldap/mdb/db$ ls -l total 432 -rw------- 1 zimbra zimbra 85899345920 Mar 25 14:53 data.mdb -rw------- 1 zimbra zimbra 8192 Mar 25 14:54 lock.mdb zimbra@zre-ldap002:~/data/ldap/mdb/db$ mkdir /tmp/mdb/ zimbra@zre-ldap002:~/data/ldap/mdb/db$ mdb_copy . /tmp/mdb zimbra@zre-ldap002:~/data/ldap/mdb/db$ ls -l /tmp/mdb/ total 428 -rw-r--r-- 1 zimbra zimbra 438272 Mar 25 14:54 data.mdb
Destination host:
[build@zre-ldap003 zcs-NETWORK-8.7.0_BETA1_1149.RHEL6_64.20150324181030]$ scp build@zre-ldap002:/tmp/mdb/data.mdb /tmp/mdb.002/ data.mdb 100% 428KB 428.0KB/s 00:00 [build@zre-ldap003 zcs-NETWORK-8.7.0_BETA1_1149.RHEL6_64.20150324181030]$ su Password: [root@zre-ldap003 zcs-NETWORK-8.7.0_BETA1_1149.RHEL6_64.20150324181030]# chmod a+rx /tmp/mdb.002 [root@zre-ldap003 zcs-NETWORK-8.7.0_BETA1_1149.RHEL6_64.20150324181030]# chmod a+r /tmp/mdb.002/data.mdb [root@zre-ldap003 zcs-NETWORK-8.7.0_BETA1_1149.RHEL6_64.20150324181030]# su - zimbra [zimbra@zre-ldap003 ~]$ cd data/ldap/mdb [zimbra@zre-ldap003 mdb]$ ls db.orig [zimbra@zre-ldap003 mdb]$ mkdir db [zimbra@zre-ldap003 mdb]$ ls db db.orig [zimbra@zre-ldap003 mdb]$ cd db [zimbra@zre-ldap003 db]$ cp /tmp/mdb.002/data.mdb . [zimbra@zre-ldap003 db]$ ls -l total 428 -rw-r-----. 1 zimbra zimbra 438272 Mar 25 14:57 data.mdb [zimbra@zre-ldap003 db]$ ldap start Started slapd: pid 32518 [zimbra@zre-ldap003 db]$ ls -l total 432 -rw-r-----. 1 zimbra zimbra 85899345920 Mar 25 14:57 data.mdb -rw-------. 1 zimbra zimbra 8192 Mar 25 14:57 lock.mdb
--Quanah
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Quanah Gibson-Mount Platform Architect Zimbra, Inc.
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