Hi,
Here's a bit of the kernel message from dmesg ------------[ cut here ]------------ WARNING: CPU: 4 PID: 633983 at kernel/exit.c:739 do_exit+0x37/0xa90 general protection fault, probably for non-canonical address 0xcc2a8cfcb62a56a1: 0000 [#1] SMP PTI CPU: 4 PID: 633983 Comm: rsync Not tainted 5.14.18-200.fc34.x86_64 #1 Hardware name: To be filled by O.E.M. To be filled by O.E.M./P8B-M Series, BIOS 6801 05/07/2018 RIP: 0010:__bio_crypt_clone+0x28/0x60
bio_crypt_clone suggests something wrong in an encrypted block device. Maybe corrupt data that rsync traverses during the backup?
What does the output of "lsblk" look like for your system? What about "lvs"?
This is worth tossing into bugzilla, for "kernel", notwithstanding abrt's reluctance in dealing with it.
It's now gone two days without it having happened again, so I've rebooted and will watch it over the coming days. Here's also the output from lsblk and an fsck run.
I've also added a -v to the rsync backup script.
# fsck /dev/md2 -r -C fsck from util-linux 2.36.2 e2fsck 1.45.6 (20-Mar-2020) /dev/md2: clean, 26678858/274702336 files, 1534551536/2197600512 blocks /dev/md2: status 0, rss 11532, real 2.183027, user 1.455968, sys 0.009868
# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 2.7T 0 disk └─sda1 8:1 0 2.7T 0 part └─md2 9:2 0 8.2T 0 raid5 /var/backup sdb 8:16 0 55.9G 0 disk ├─sdb1 8:17 0 51.8G 0 part │ └─md127 9:127 0 51.8G 0 raid1 / ├─sdb2 8:18 0 501M 0 part │ └─md126 9:126 0 500.7M 0 raid1 /boot ├─sdb3 8:19 0 96M 0 part │ └─md125 9:125 0 95.9M 0 raid1 /boot/efi └─sdb4 8:20 0 3.5G 0 part [SWAP] sdc 8:32 0 2.7T 0 disk └─sdc1 8:33 0 2.7T 0 part └─md2 9:2 0 8.2T 0 raid5 /var/backup sdd 8:48 0 55.9G 0 disk ├─sdd1 8:49 0 51.8G 0 part │ └─md127 9:127 0 51.8G 0 raid1 / ├─sdd2 8:50 0 501M 0 part │ └─md126 9:126 0 500.7M 0 raid1 /boot ├─sdd3 8:51 0 96M 0 part │ └─md125 9:125 0 95.9M 0 raid1 /boot/efi └─sdd4 8:52 0 3.5G 0 part [SWAP] sde 8:64 0 2.7T 0 disk └─sde1 8:65 0 2.7T 0 part └─md2 9:2 0 8.2T 0 raid5 /var/backup sdf 8:80 0 3.6T 0 disk └─sdf1 8:81 0 3.6T 0 part └─md2 9:2 0 8.2T 0 raid5 /var/backup