#Ubuntu logical volume manager 16.04 server how to#

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#Ubuntu logical volume manager 16.04 server install#

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#Ubuntu logical volume manager 16.04 server apk#

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Vivek Gite is the founder of nixCraft, the oldest running blog about Linux and open source. If you are using a Veritas file system, you can make a backup like this (quoting from the official MySQL documentation):Ĭopy files from the snapshot and unmount the snapshot. # tar czvf mysql.$(date +'%m-%d%-%Y).tar.gz mysql # mount -o ro /dev/vg01/backup /mnt/mysql Now, move backup to tape or other server: # lvcreate -snapshot â€“-size=1000M -name=backup /dev/vg01/mysql Now type the following command (assuming that your MySQL DB is on /dev/vg01/mysql): This is very convenient way to get backups if you have a file system such as Veritas or Linux LVM or FreeBD UFS that can take snapshots in time. MySQL Backup: Using LVM File System SnapshotĪt mysql prompt type the following command to closes all open tables and locks all tables for all databases with a read lock until you explicitly release the lock by executing UNLOCK TABLES. You can also use third party commercial proprietary (see below for discussion) or GPL backup solutions/software. Please note that LVM snapshots cannot be used with non-LVM filesystems i.e. Output: mount: block device /dev/ops/dbbackup is write-protected, mounting read-only # mount /dev/ops/dbbackup /mnt/ops/dbbackup Lvcreate - logical volume '/dev/ops/dbbackup' successfully createdĬreate a mount-point and mount the volume: Lvcreate - doing automatic backup of 'ops' Lvcreate - INFO: using default snapshot chunk size of 64 KB for '/dev/ops/dbbackup'

#Ubuntu logical volume manager 16.04 server full#

Lvcreate - WARNING: the snapshot must be disabled if it gets full # lvcreate -L1000M -s -n dbbackup /dev/ops/databases This means you can back up that volume without having to worry about data being changed while the backup is going on, and you don’t have to take the database volume offline while the backup is taking place. A snapshot volume is a special type of volume that presents all the data that was in the volume at the time the snapshot was created. This solution will only work if you have created the partition with LVM. Logical Volume Manager snapshot to avoid inconsistent backup If you are using database then shutdown database server and make a backup. You need to mount partition as read only, so that no one can make changes to file and make a backup:Īs you see, the draw back is service remains unavailable during backup time to all end users. Read-only partition – to avoid inconsistent backup