Migrate Data to Another Disk

High disk load may lead to delays in event arrivals. In severe cases, it might result in complete inoperability of FindFace Multi. One of the means for reducing the disk load is to migrate the FindFace Multi data storages to another disk.

In this section:

Prepare Disk

To prepare a disk for the data migration, do the following:

1. Create a new mount point (/mnt/ffdata in our example).

   sudo mkdir /mnt/ffdata
   

2. Create a partition.

   sudo parted /dev/sdb
   mklabel gpt
   mkpart primary ext4 1MiB 100%
   q
   sudo mkfs.ext4 /dev/sdb1
   

3. Learn the UUID of the partition (sdb1 in our example).

   sudo blkid | grep sdb1
   /dev/sdb1: LABEL="data" UUID="0638ebe0-853e-43ea-8f35-bfae305695d1" TYPE="ext4" PARTUUID="8cebaacc-77d7-4757-b4c6-14147e92646c"
   

4. Add the partition to fstab to make it automatically mount on booting.

   sudo vi /etc/fstab
   ------------
   #DATA mount
   UUID=0638ebe0-853e-43ea-8f35-bfae305695d1 /mnt/ffdata/    ext4    auto,user,rw     0       2
   -------------
   

5. Mount all the filesystems.

   sudo mount -a
   

Migrate Photo and Video Storage

To migrate the FindFace Multi photo and video storage, do the following:

1. Inside the mount point, create a directory to store photos and recorded video chunks (if the Video Recorder was deployed).

   sudo mkdir /mnt/ffdata/ffupload -p
   

2. Mount the created directory (/mnt/ffdata/ffupload in the example) into the findface-multi-findface-upload-1 container. To do so, open the /opt/findface-multi/docker-compose.yaml configuration file and list it in the volumes of the findface-upload section instead of the default /opt/findface-multi/data/findface-upload directory.

   sudo vi /opt/findface-multi/docker-compose.yaml
   
   findface-upload:
     ...
     volumes: ['./configs/findface-upload/40-ffupload.sh:/docker-entrypoint.d/40-ffupload.sh:ro',
       '/mnt/ffdata/ffupload:/var/lib/ffupload']
   

3. Rebuild all FindFace Multi containers.

   cd /opt/findface-multi
   
   sudo docker-compose down
   
   sudo docker-compose up -d
   

Migrate Main Database (PostgreSQL)

To migrate the PostgreSQL database, do the following:

1. Inside the mount point, create a directory to store the PostgreSQL data.

   sudo mkdir /mnt/ffdata/postresql -p
   

2. Mount the created directory (/mnt/ffdata/postresql in the example) into the findface-multi-postgresql-1 container. To do so, open the /opt/findface-multi/docker-compose.yaml configuration file and list it in the volumes of the postgresql section instead of the default /opt/findface-multi/data/postgresql directory.

   sudo vi /opt/findface-multi/docker-compose.yaml
   
   postgresql:
   ...
     volumes: ['./configs/postgresql/40-init.sql:/docker-entrypoint-initdb.d/40-init.sql:ro',
       '/mnt/ffdata/postgresql:/bitnami/postgresql/data']
   

3. Rebuild all FindFace Multi containers.

   cd /opt/findface-multi
   
   sudo docker-compose down
   
   sudo docker-compose up -d