Hi "A L", [root@backuplogC7 ~]# btrfs sub show /var/lib/mariadb/mysql /var/lib/mariadb/mysql Name: mysql UUID: 92f319c5-e132-3249-9b13-d39ee77a2b44 Parent UUID: - Received UUID: 3ad0334a-4063-654c-add6-b1cbcdeaa639 Creation time: 2017-06-21 13:27:41 +0700 Subvolume ID: 257 Generation: 539 Gen at creation: 9 Parent ID: 5 Top level ID: 5 Flags: - Snapshot(s): mysql_201708060830 mysql_201708070830 mysql_201708080830 mysql_201708090830 mysql_201708100830 mysql_201708110830 mysql_201708120830 mysql_201708130830
yes I think it has Received UUID because I restored the source from snapshot mysql_201708040830 for prove that the local snapshot was work. How to clear the Received UUID ? What to do next? Best Regards, Siranee Jaraswachirakul. > Have you checked that there is no Received UUID on the source subvolume? > > # btrfs sub show volume/mysql/ > volume/mysql > Name: mysql > UUID: 8a94524e-a956-c14b-bb8d-d453627f27d5 > Parent UUID: - > Received UUID: - > Creation time: 2017-04-17 11:46:20 +0200 > Subvolume ID: 1469 > Generation: 122934 > Gen at creation: 78671 > Parent ID: 5 > Top level ID: 5 > Flags: - > Snapshot(s): > > There is no Received UUID here. If it has, then btrfs send-receive will > have problems, since all snapshots of the source subvolume will have the > same Received UUID and it can't tell the differences between the snapshots. > > On 8/13/2017 5:40 AM, siranee...@tpc.co.th wrote: >> Hi Chris, >> >> I started as your suggestion again. The diff occured since snapshot >> mysql_201708090830 manually send. What should I do next? >> >> - delete all the bad/mismatching snapshots only on the destination computer. >> [root@joytest ~]# date >> Sun Aug 13 10:27:23 ICT 2017 >> [root@joytest ~]# cd /var/lib/mariadb >> [root@joytest mariadb]# btrfs sub list . >> ID 313 gen 220 top level 5 path mysql_201708070830 >> ID 316 gen 199 top level 5 path mysql_201708080830 >> ID 318 gen 205 top level 5 path mysql_201708090830 >> ID 320 gen 211 top level 5 path mysql_201708100830 >> ID 322 gen 219 top level 5 path mysql_201708110830 >> ID 323 gen 219 top level 5 path mysql_201708120830 >> ID 324 gen 224 top level 5 path mysql_201708130830 >> ID 325 gen 225 top level 5 path mysql >> [root@joytest mariadb]# btrfs sub del mysql_201708130830 >> Delete subvolume (no-commit): '/var/lib/mariadb/mysql_201708130830' >> [root@joytest mariadb]# btrfs sub del mysql_201708120830 >> Delete subvolume (no-commit): '/var/lib/mariadb/mysql_201708120830' >> [root@joytest mariadb]# btrfs sub del mysql_201708110830 >> Delete subvolume (no-commit): '/var/lib/mariadb/mysql_201708110830' >> [root@joytest mariadb]# btrfs sub del mysql_201708100830 >> Delete subvolume (no-commit): '/var/lib/mariadb/mysql_201708100830' >> [root@joytest mariadb]# btrfs sub del mysql_201708090830 >> Delete subvolume (no-commit): '/var/lib/mariadb/mysql_201708090830' >> [root@joytest mariadb]# btrfs sub sync . >> [root@joytest mariadb]# systemctl status mariadb >> â mariadb.service - MariaDB database server >> Loaded: loaded (/usr/lib/systemd/system/mariadb.service; enabled; vendor >> preset: >> disabled) >> Active: failed (Result: exit-code) since Sun 2017-08-13 09:07:00 ICT; 1h >> 24min >> ago >> Process: 19871 ExecStartPost=/usr/libexec/mariadb-wait-ready $MAINPID >> (code=exited, status=1/FAILURE) >> Process: 19870 ExecStart=/usr/bin/mysqld_safe --basedir=/usr (code=exited, >> status=0/SUCCESS) >> Process: 19842 ExecStartPre=/usr/libexec/mariadb-prepare-db-dir %n >> (code=exited, >> status=0/SUCCESS) >> Main PID: 19870 (code=exited, status=0/SUCCESS) >> >> Aug 13 09:06:58 joytest systemd[1]: Starting MariaDB database server... >> Aug 13 09:06:58 joytest mysqld_safe[19870]: 170813 09:06:58 mysqld_safe >> Logging to >> '/var/log/mariadb/mariadb.log'. >> Aug 13 09:06:58 joytest mysqld_safe[19870]: 170813 09:06:58 mysqld_safe >> Starting >> mysqld daemon with databases from /var/lib/mariadb/mysql >> Aug 13 09:07:00 joytest systemd[1]: mariadb.service: control process exited, >> code=exited status=1 >> Aug 13 09:07:00 joytest systemd[1]: Failed to start MariaDB database server. >> Aug 13 09:07:00 joytest systemd[1]: Unit mariadb.service entered failed >> state. >> Aug 13 09:07:00 joytest systemd[1]: mariadb.service failed. >> [root@joytest mariadb]# btrfs sub list . >> ID 313 gen 220 top level 5 path mysql_201708070830 >> ID 316 gen 199 top level 5 path mysql_201708080830 >> ID 325 gen 225 top level 5 path mysql >> [root@joytest mariadb]# >> >> - The most recent good snapshot pair, which rsync shows origin and >> destination match, is mysql_201708080830 so you can keep that one on >> both sides. >> >> [root@backuplogC7 ~]# btrfs sub list /var/lib/mariadb >> ID 257 gen 538 top level 5 path mysql >> ID 316 gen 498 top level 5 path mysql_201708060830 >> ID 317 gen 503 top level 5 path mysql_201708070830 >> ID 318 gen 507 top level 5 path mysql_201708080830 >> ID 319 gen 514 top level 5 path mysql_201708090830 >> ID 320 gen 524 top level 5 path mysql_201708100830 >> ID 321 gen 529 top level 5 path mysql_201708110830 >> ID 322 gen 533 top level 5 path mysql_201708120830 >> ID 323 gen 538 top level 5 path mysql_201708130830 >> [root@backuplogC7 ~]# rsync -avnc /var/lib/mariadb/mysql_201708070830/ >> root@192.168.45.166://var/lib/mariadb/mysql_201708070830/ >> sending incremental file list >> ./ >> >> sent 3773 bytes received 19 bytes 842.67 bytes/sec >> total size is 718361496 speedup is 189441.32 (DRY RUN) >> [root@backuplogC7 ~]# rsync -avnc /var/lib/mariadb/mysql_201708080830/ >> root@192.168.45.166://var/lib/mariadb/mysql_201708080830/ >> sending incremental file list >> ./ >> >> sent 3769 bytes received 19 bytes 841.78 bytes/sec >> total size is 718361496 speedup is 189641.37 (DRY RUN) >> [root@backuplogC7 ~]# date >> Sun Aug 13 10:34:05 ICT 2017 >> [root@backuplogC7 ~]# >> >> - manually do incremental send/receive, starting with >> mysql_201708090830/, to make the destination current again with the >> origin. >> >> [root@backuplogC7 ~]# btrfs send -p /var/lib/mariadb/mysql_201708080830 >> /var/lib/mariadb/mysql_201708090830 | ssh 192.168.45.166 btrfs receive >> /var/lib/mariadb >> At subvol /var/lib/mariadb/mysql_201708090830 >> At snapshot mysql_201708090830 >> [root@backuplogC7 ~]# rsync -avnc /var/lib/mariadb/mysql_201708090830/ >> root@192.168.45.166://var/lib/mariadb/mysql_201708090830/ >> sending incremental file list >> ./ >> ib_logfile1 >> ibdata1 >> >> sent 3779 bytes received 25 bytes 507.20 bytes/sec >> total size is 718361496 speedup is 188843.72 (DRY RUN) >> [root@backuplogC7 ~]# >> >> Best Regards, >> >> Siranee Jaraswachirakul. >> >>> On Sat, Aug 12, 2017 at 8:20 PM, <siranee...@tpc.co.th> wrote: >>> >>>> [root@backuplogC7 ~]# rsync -avnc /var/lib/mariadb/mysql_201708090830 >>>> root@192.168.45.166://var/lib/mariadb/mysql_201708090830 >>> >>> You need trailing / for the first directory with -a option. >>> >>> rsync -a dir dir >>> >>> is not the same command as >>> >>> rsync -a dir/ dir >>> >>> It's confusing but your command is trying to create mysql_201708090830 >>> directory on the source, in the mysql_201708090830 on the destination. >>> That is why everything mismatches. To make it mean "contents of" you >>> need trailing slash on at least the origin. >>> >>> >>> >>> -- >>> Chris Murphy >>> >> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in >> the body of a message to majord...@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html > > -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html