Wipefs to remove btrfs6/18/2023 ![]() Add the new 6TB drive to the current filesystem on the older 6TB drive.Repartition the 2 remaining 2TB drives and create a new RAID1 filesystem on the 2TB drives.Copy Ubuntu to the SSD and set up the SSD as the boot device.Remove the extra 2TB drive and install the SSD and the new 6TB drive.A small part of the 2TB drives is reserved (partitioned) for a backup for the installation (Ubuntu server 14.04) so if the SSD fails I can boot up to one of the 2TB drives and be running again in short order - BIOS fallback in boot order is automatic. This will increase my total data storage to 8TB. I will use the 6TB drives in RAID1 for my DVD collection and the 2TB drives in RAID1 for everything else (pics, docs, music, etc.). The new configuration is adding a small 60GB SSD as a boot device, a 2nd 6TB drive for RAID1 with the first drive, and removing one of the 2TB drives. My server had 1 6TB drive for data and 3x2TB drives used for backups. I recommend it to anyone who will listen. I have been a long time btrfs user (since 0.19) and am very comfortable with using it. ![]() I currently have 3 different installs on a single btrfs filesystem, each in their own subvolume. Subvolumes are mountable just like a partition so no partitioning is necessary. This has many benefits including all free space on the filesystem is available to any subvolume to use when needed. This keeps data separate while still existing on a single filesystem. On a btrfs, a filesystem can be divided into subvolumes. If you're new to BTRFS, I reference "subvolumes" below. All that's needed is sudo partprobe after a drive swap. My server supports hot swapping drives so I never powered down. I did actually have to reboot once during the whole process because I changed boot devices and I wanted to be sure I could boot to the new install location before wiping the old one.
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