For my setup, btrfs file system runs on top of a LUKS encrypted
partition which itself is on top of a mdraid (mirroring).
The Layout is:
# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 2,7T 0 disk
├─sda1 8:1 0 7M 0 part
├─sda2 8:2 0 286M 0 part /boot
└─sda3 8:3 0 2,7T 0 part
└─md0 9:0 0 2,7T 0 raid1
└─md0_crypt (dm-0) 252:0 0 2,7T 0 crypt
sdb 8:16 0 2,7T 0 disk
├─sdb1 8:17 0 7M 0 part
├─sdb2 8:18 0 286M 0 part /boot2
└─sdb3 8:19 0 2,7T 0 part
└─md0 9:0 0 2,7T 0 raid1
└─md0_crypt (dm-0) 252:0 0 2,7T 0 crypt
The btrfs filesystem does not use btrfs-raid functionality.
Scenario: 3 hosts are backed up using rsync and btrfs-snapshots on this
server. I have 3 groups of subvolumes with about 50 snapshots in each
group.
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https://bugs.launchpad.net/bugs/1559723
Title:
soft lockup during btrfs balance
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