Hi Fajar, Thank you very much for your response, and sorry - I think i know very little about the linux operating system, and I never added a disk in an environment with Linux Container.
I made several attempts, including a partition of one of my disks, but I did not succeed. So I decided to simplify my problem, trying this time with a virtual disk. A - Quick guess, /dev/xvda did not exist before you ran dd? No. B - Do you know the difference between a file and block device? If my guess is correct, you have just created a regular file /dev/xvda. That is not a xen virtual device. No, I do not know exactly the difference. Can you help me with a litle explanation or direct me to some website with more information about it? What i do: https://www.oreilly.com/library/view/linux-device-drivers/0596000081/ch01s03.html "Like char devices, block devices are accessed by filesystem nodes in the /dev directory. A block device is something that can host a filesystem, such as a disk." I understand that what aI need is a block device. I want to create a virtual disk in the host, and in the container, i need to see this as a disk. I need to format the virtual disk in the container. And to implement RAC, i need a shared virtual disk, because this will me acessed by n containers. mmoura@mmoura-W350STQ-W370ST:~/DiscosVirtuais$ pwd /home/mmoura/DiscosVirtuais dd if=/dev/zero of=1GB_HDD.img bs=1M count=1024 fdisk 1GB_HDD.img mkfs.ext4 1GB_HDD.img sudo losetup -Pf --show 1GB_HDD.img mmoura@mmoura-W350STQ-W370ST:~/DiscosVirtuais$ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT loop24 7:24 0 1G 0 loop sudo mount -t ext4 /dev/loop24 /mnt mmoura@mmoura-W350STQ-W370ST:~/DiscosVirtuais$ df -h Sist. Arq. Tam. Usado Disp. Uso% Montado em /dev/loop24 976M 2,6M 907M 1% /mnt lxc start ol7testedisc mmoura@mmoura-W350STQ-W370ST:~/DiscosVirtuais$ lxc config device add ol7testedisc loop24 unix-block path=/dev/loop24 Dispositivo loop24 adicionado a ol7testedisc -- In the container: [root@ol7testedisc ~]#lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sdb 8:16 0 698.7G 0 disk `-sdb1 8:17 0 698.7G 0 part /dev/loop24 loop24 7:24 0 1G 0 loop [root@ol7testedisc ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sdb1 687G 109G 544G 17% / none 492K 0 492K 0% /dev udev 7.8G 0 7.8G 0% /dev/tty tmpfs 100K 0 100K 0% /dev/lxd tmpfs 100K 0 100K 0% /dev/.lxd-mounts tmpfs 7.8G 0 7.8G 0% /dev/shm tmpfs 7.8G 8.1M 7.8G 1% /run tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup tmpfs 1.6G 0 1.6G 0% /run/user/54321 [root@ol7testedisc ~]# mount -t ext4 /dev/loop24 /mnt mount: /dev/loop24 is already mounted or /mnt busy And im loss... -- Atenciosamente, Márcio de Figueiredo Moura e Castro Oracle Real Application Clusters 11g Certified Implementation Specialist Oracle 11g DBA OCP Oracle Exadata 11g Certified Implementation Specialist Oracle Linux Certified Implementation Specialist OPN Certified Specialist Oracle 10g DBA OCA Oracle PL/SQL Developer OCA
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