meanwhile I have other errors in journalctl:
Aug 27 12:37:18 manjaro-gnome kernel: INFO: task rsync:2551 blocked for more than 245 seconds.
Aug 27 12:37:18 manjaro-gnome kernel: Tainted: G OE 5.13.11-1-MANJARO #1
Aug 27 12:37:18 manjaro-gnome kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Aug 27 12:38:32 manjaro-gnome kernel: sd 1:0:0:0: [sdc] tag#0 timing out command, waited 180s
Aug 27 12:38:32 manjaro-gnome kernel: blk_update_request: I/O error, dev sdc, sector 276830128 op 0x1:(WRITE) flags 0x7000 phys_seg 128 prio class 0
Aug 27 12:38:32 manjaro-gnome kernel: Buffer I/O error on dev sdc1, logical block 34603510, lost async page write
Aug 27 12:38:32 manjaro-gnome kernel: Buffer I/O error on dev sdc1, logical block 34603511, lost async page write
Aug 27 12:38:32 manjaro-gnome kernel: Buffer I/O error on dev sdc1, logical block 34603512, lost async page write
Aug 27 12:38:32 manjaro-gnome kernel: Buffer I/O error on dev sdc1, logical block 34603513, lost async page write
Aug 27 12:38:32 manjaro-gnome kernel: Buffer I/O error on dev sdc1, logical block 34603514, lost async page write
Aug 27 12:38:32 manjaro-gnome kernel: Buffer I/O error on dev sdc1, logical block 34603515, lost async page write
Aug 27 12:38:32 manjaro-gnome kernel: Buffer I/O error on dev sdc1, logical block 34603516, lost async page write
Aug 27 12:38:32 manjaro-gnome kernel: Buffer I/O error on dev sdc1, logical block 34603517, lost async page write
Aug 27 12:38:32 manjaro-gnome kernel: Buffer I/O error on dev sdc1, logical block 34603518, lost async page write
Aug 27 12:38:32 manjaro-gnome kernel: Buffer I/O error on dev sdc1, logical block 34603519, lost async page write
Aug 27 12:38:32 manjaro-gnome kernel: sd 1:0:0:0: [sdc] tag#1 timing out command, waited 180s
Aug 27 12:38:32 manjaro-gnome kernel: blk_update_request: I/O error, dev sdc, sector 288862568 op 0x1:(WRITE) flags 0x4000 phys_seg 128 prio class 0
Aug 27 12:38:32 manjaro-gnome kernel: sd 1:0:0:0: [sdc] tag#2 timing out command, waited 180s
Aug 27 12:38:32 manjaro-gnome kernel: blk_update_request: I/O error, dev sdc, sector 288861544 op 0x1:(WRITE) flags 0x4000 phys_seg 128 prio class 0
Aug 27 12:38:32 manjaro-gnome kernel: sd 1:0:0:0: [sdc] tag#3 timing out command, waited 180s
Aug 27 12:38:32 manjaro-gnome kernel: blk_update_request: I/O error, dev sdc, sector 281021136 op 0x1:(WRITE) flags 0x3000 phys_seg 1 prio class 0
Aug 27 12:38:32 manjaro-gnome kernel: sd 1:0:0:0: [sdc] tag#4 timing out command, waited 180s
Aug 27 12:38:32 manjaro-gnome kernel: blk_update_request: I/O error, dev sdc, sector 281021104 op 0x1:(WRITE) flags 0x3000 phys_seg 2 prio class 0
Aug 27 12:38:32 manjaro-gnome kernel: sd 1:0:0:0: [sdc] tag#5 timing out command, waited 180s
Aug 27 12:38:32 manjaro-gnome kernel: blk_update_request: I/O error, dev sdc, sector 281021072 op 0x1:(WRITE) flags 0x3000 phys_seg 2 prio class 0
Aug 27 12:38:32 manjaro-gnome kernel: sd 1:0:0:0: [sdc] tag#6 timing out command, waited 180s
Aug 27 12:38:32 manjaro-gnome kernel: blk_update_request: I/O error, dev sdc, sector 281020984 op 0x1:(WRITE) flags 0x3000 phys_seg 2 prio class 0
Aug 27 12:38:32 manjaro-gnome kernel: sd 1:0:0:0: [sdc] tag#7 timing out command, waited 180s
Aug 27 12:38:32 manjaro-gnome kernel: blk_update_request: I/O error, dev sdc, sector 281020440 op 0x1:(WRITE) flags 0x3000 phys_seg 12 prio class 0
Aug 27 12:38:32 manjaro-gnome kernel: sd 1:0:0:0: [sdc] tag#8 timing out command, waited 180s
Aug 27 12:38:32 manjaro-gnome kernel: blk_update_request: I/O error, dev sdc, sector 998532824 op 0x1:(WRITE) flags 0x800 phys_seg 42 prio class 0
Aug 27 12:38:32 manjaro-gnome kernel: sd 1:0:0:0: [sdc] tag#9 timing out command, waited 180s
Aug 27 12:38:32 manjaro-gnome kernel: blk_update_request: I/O error, dev sdc, sector 281020696 op 0x1:(WRITE) flags 0x3000 phys_seg 25 prio class 0
Aug 27 12:38:32 manjaro-gnome kernel: sd 1:0:0:0: [sdc] tag#10 timing out command, waited 180s
Aug 27 12:38:32 manjaro-gnome kernel: sd 1:0:0:0: [sdc] tag#11 timing out command, waited 180s
Aug 27 12:38:32 manjaro-gnome kernel: sd 1:0:0:0: [sdc] tag#12 timing out command, waited 180s
Aug 27 12:38:32 manjaro-gnome kernel: EXT4-fs error (device sdc1): ext4_check_bdev_write_error:215: comm rsync: Error while async write back metadata
Aug 27 12:38:32 manjaro-gnome kernel: sd 1:0:0:0: [sdc] tag#13 timing out command, waited 180s
Aug 27 12:38:32 manjaro-gnome kernel: EXT4-fs error (device sdc1): ext4_check_bdev_write_error:215: comm rsync: Error while async write back metadata
Aug 27 12:38:32 manjaro-gnome kernel: EXT4-fs error (device sdc1): ext4_check_bdev_write_error:215: comm rsync: Error while async write back metadata
Aug 27 12:38:32 manjaro-gnome kernel: EXT4-fs error (device sdc1): ext4_check_bdev_write_error:215: comm rsync: Error while async write back metadata
Aug 27 12:38:32 manjaro-gnome kernel: EXT4-fs error (device sdc1): ext4_check_bdev_write_error:215: comm rsync: Error while async write back metadata
Aug 27 12:38:32 manjaro-gnome kernel: sd 1:0:0:0: [sdc] tag#14 timing out command, waited 180s
Aug 27 12:38:32 manjaro-gnome kernel: sd 1:0:0:0: [sdc] tag#15 timing out command, waited 180s
Aug 27 12:38:32 manjaro-gnome kernel: sd 1:0:0:0: [sdc] tag#16 timing out command, waited 180s
Aug 27 12:38:32 manjaro-gnome kernel: sd 1:0:0:0: [sdc] tag#17 timing out command, waited 180s
Aug 27 12:38:32 manjaro-gnome kernel: EXT4-fs error (device sdc1): ext4_check_bdev_write_error:215: comm kworker/u32:4: Error while async write back metadata
Aug 27 12:38:32 manjaro-gnome kernel: sd 1:0:0:0: [sdc] tag#18 timing out command, waited 180s
Aug 27 12:38:32 manjaro-gnome kernel: sd 1:0:0:0: [sdc] tag#19 timing out command, waited 180s
Aug 27 12:38:32 manjaro-gnome kernel: Aborting journal on device sdc1-8.