root@gg2:~$ df -h /var/lib/mysql/

Filesystem      Size  Used Avail Use% Mounted on

/dev/loop0      974M  447M  460M  50% /var/lib/mysql

root@gg2:~$ df -h /var/lib/mariadb/

Filesystem      Size  Used Avail Use% Mounted on

/dev/sda1       4.9G  3.8G  903M  81% /

root@gg2:~$ find /var/lib/mariadb/ -type f -exec ls -lh {} \;

-rw-rw---- 1 mysql mysql 40M Oct 28 10:50 /var/lib/mariadb/testr/fast_rows.ibd

-rw-rw---- 1 mysql mysql 732M Oct 28 11:00 /var/lib/mariadb/testr/bigtable.ibd

root@gg2:~$ systemctl stop mariadb

root@gg2:~$ rm -fr /var/lib/mysql/*

root@gg2:~$ rm -fr /var/lib/mariadb/*

root@gg2:~$ echo "=========================" >> /var/log/mysql/mariadb.err

root@gg2:~$ systemctl start mariadb

Job for mariadb.service failed because a fatal signal was delivered to the control process.

See "systemctl status mariadb.service" and "journalctl -xe" for details.

root@gg2:~$ tail -300 /var/log/mysql/mariadb.err | grep -i error

2022-10-28 11:03:11 0 [ERROR] WSREP: ./gcs/src/gcs_group.cpp:gcs_group_handle_join_msg():1207: Will never receive state. Need to abort.

2022-10-28 11:03:11 0 [ERROR] WSREP: Process completed with error: wsrep_sst_mariabackup --role 'joiner' --address '192.168.68.192' --datadir '/var/lib/mysql/' --parent 1942 --progress 0 --binlog '/var/log/mysql/mariadb-bin' --mysqld-args --wsrep_start_position=00000000-0000-0000-0000-000000000000:-1: 2 (No such file or directory)

2022-10-28 11:03:11 0 [ERROR] WSREP: Failed to read uuid:seqno and wsrep_gtid_domain_id from joiner script.

2022-10-28 11:03:11 1 [ERROR] WSREP: Application received wrong state:

2022-10-28 11:03:11 1 [ERROR] WSREP: Application state transfer failed. This is unrecoverable condition, restart required.

root@gg2:~$ rm -fr /var/lib/mysql/*

root@gg2:~$ rm -fr /var/lib/mariadb/*

root@gg2:~$ touch /tmp/t.txt

root@gg2:~$ echo "-----------------------------------" >> /var/log/mysql/mariadb.err

root@gg2:~$ systemctl start mariadb

Job for mariadb.service failed because the control process exited with error code.

See "systemctl status mariadb.service" and "journalctl -xe" for details.

root@gg2:~$ grep -A500 "\-\-\-\-\-\-\-\-\-\-\-" /var/log/mysql/mariadb.err |grep -i ERROR

2022-10-28 11:08:18 0 [ERROR] WSREP: Requested size 268436760 for '/var/lib/mysql//galera.cache' exceeds available storage space 154144768: 28 (No space left on device)

2022-10-28 11:08:18 0 [ERROR] WSREP: Failed to create a new provider '/usr/lib/libgalera_smm.so' with options 'socket.ssl=false; cert.optimistic_pa=no; gcache.recover=yes; gcache.size=256M; gcs.fc_factor=0.8; gcs.fc_limit=96; gcs.fc_master_slave=yes;': Failed to initialize wsrep provider

2022-10-28 11:08:18 0 [ERROR] WSREP: Failed to load provider

2022-10-28 11:08:18 0 [ERROR] Plugin 'wsrep' init function returned error.

2022-10-28 11:08:18 0 [ERROR] Could not open mysql.plugin table: "Table 'mysql.plugin' doesn't exist". Some plugins may be not loaded

2022-10-28 11:08:18 0 [ERROR] Failed to initialize plugins.

2022-10-28 11:08:18 0 [ERROR] Aborting

2022-10-28 11:08:20 0 [ERROR] WSREP: Requested size 268436760 for '/var/lib/mysql//galera.cache' exceeds available storage space 154120192: 28 (No space left on device)

2022-10-28 11:08:20 0 [ERROR] WSREP: Failed to create a new provider '/usr/lib/libgalera_smm.so' with options 'socket.ssl=false; cert.optimistic_pa=no; gcache.recover=yes; gcache.size=256M; gcs.fc_factor=0.8; gcs.fc_limit=96; gcs.fc_master_slave=yes;': Failed to initialize wsrep provider

2022-10-28 11:08:20 0 [ERROR] WSREP: Failed to load provider

2022-10-28 11:08:20 0 [ERROR] Plugin 'wsrep' init function returned error.

2022-10-28 11:08:20 0 [ERROR] Could not open mysql.plugin table: "Table 'mysql.plugin' doesn't exist". Some plugins may be not loaded

2022-10-28 11:08:20 0 [ERROR] Failed to initialize plugins.

2022-10-28 11:08:20 0 [ERROR] Aborting

root@gg2:~$