@Vitekalso I would agree with you on the fact that it is failing because of delay/network speeds, but it makes little sense because it worked months before... According to my chat with pcloud, there were no changes on their side, and I am not aware of any changes on my side either.
@KluthRtried with no compression and the input/output error is now in a different container, in terms of unraid logs itself here is what was popping during the backup process:
Aug 25 20:18:46 MS-01 kernel: ata1: EH complete
Aug 25 20:18:49 MS-01 kernel: ata1.00: exception Emask 0x0 SAct 0x6c0001c0 SErr 0x0 action 0x0
Aug 25 20:18:49 MS-01 kernel: ata1.00: irq_stat 0x40000008
Aug 25 20:18:49 MS-01 kernel: ata1.00: failed command: READ FPDMA QUEUED
Aug 25 20:18:49 MS-01 kernel: ata1.00: cmd 60/a0:d0:f0:02:70/03:00:0e:00:00/40 tag 26 ncq dma 475136 in
Aug 25 20:18:49 MS-01 kernel: res 41/40:00:cf:04:70/00:00:0e:00:00/40 Emask 0x409 (media error) <F>
Aug 25 20:18:49 MS-01 kernel: ata1.00: status: { DRDY ERR }
Aug 25 20:18:49 MS-01 kernel: ata1.00: error: { UNC }
Aug 25 20:18:49 MS-01 kernel: ata1.00: configured for UDMA/100
Aug 25 20:18:49 MS-01 kernel: sd 1:0:0:0: [sdb] tag#26 UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=DRIVER_OK cmd_age=1s
Aug 25 20:18:49 MS-01 kernel: sd 1:0:0:0: [sdb] tag#26 Sense Key : 0x3 [current]
Aug 25 20:18:49 MS-01 kernel: sd 1:0:0:0: [sdb] tag#26 ASC=0x11 ASCQ=0x4
Aug 25 20:18:49 MS-01 kernel: sd 1:0:0:0: [sdb] tag#26 CDB: opcode=0x28 28 00 0e 70 02 f0 00 03 a0 00
Aug 25 20:18:49 MS-01 kernel: I/O error, dev sdb, sector 242222287 op 0x0:(READ) flags 0x0 phys_seg 57 prio class 2
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222216
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222224
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222232
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222240
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222248
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222256
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222264
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222272
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222280
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222288
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222296
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222304
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222312
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222320
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222328
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222336
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222344
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222352
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222360
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222368
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222376
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222384
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222392
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222400
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222408
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222416
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222424
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222432
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222440
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222448
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222456
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222464
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222472
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222480
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222488
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222496
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222504
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222512
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222520
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222528
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222536
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222544
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222552
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222560
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222568
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222576
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222584
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222592
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222600
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222608
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222616
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222624
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222632
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222640
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222648
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222656
Aug 25 20:18:49 MS-01 kernel: md: disk1 read error, sector=242222664
Aug 25 20:18:49 MS-01 kernel: ata1: EH complete
Aug 25 20:21:57 MS-01 kernel: veth5cc4831: renamed from eth0
Aug 25 20:22:00 MS-01 kernel: eth0: renamed from veth50c9307
Aug 25 20:22:42 MS-01 flash_backup: adding task: /usr/local/emhttp/plugins/dynamix.my.servers/scripts/UpdateFlashBackup update
Aug 25 20:24:05 MS-01 kernel: docker0: port 6(vethea6cb41) entered disabled state
Aug 25 20:24:05 MS-01 kernel: vethce9f960: renamed from eth0
Aug 25 20:24:05 MS-01 kernel: docker0: port 6(vethea6cb41) entered disabled state
Aug 25 20:24:05 MS-01 kernel: device vethea6cb41 left promiscuous mode
Aug 25 20:24:05 MS-01 kernel: docker0: port 6(vethea6cb41) entered disabled state
Aug 25 20:24:10 MS-01 kernel: docker0: port 6(veth92d2af9) entered blocking state
Aug 25 20:24:10 MS-01 kernel: docker0: port 6(veth92d2af9) entered disabled state
Aug 25 20:24:10 MS-01 kernel: device veth92d2af9 entered promiscuous mode
Aug 25 20:24:10 MS-01 kernel: eth0: renamed from vetha835d21
Aug 25 20:24:10 MS-01 kernel: IPv6: ADDRCONF(NETDEV_CHANGE): veth92d2af9: link becomes ready
Aug 25 20:24:10 MS-01 kernel: docker0: port 6(veth92d2af9) entered blocking state
Aug 25 20:24:10 MS-01 kernel: docker0: port 6(veth92d2af9) entered forwarding state
Also, when the unraid host stops to be reachable after the backup process stops, it displays this in the log:
Aug 25 20:25:00 MS-01 winbindd[10145]: [2024/08/25 20:25:00.472105, 0] ../../source3/winbindd/winbindd_samr.c:71(open_internal_samr_conn)
Aug 25 20:25:00 MS-01 winbindd[10145]: open_internal_samr_conn: Could not connect to samr pipe: NT_STATUS_CONNECTION_DISCONNECTED
Aug 25 20:25:01 MS-01 winbindd[10145]: [2024/08/25 20:25:01.641314, 0] ../../source3/winbindd/winbindd_samr.c:71(open_internal_samr_conn)
Aug 25 20:25:01 MS-01 winbindd[10145]: open_internal_samr_conn: Could not connect to samr pipe: NT_STATUS_CONNECTION_DISCONNECTED
Just in case, also shared debug logs, the id is: `a9ae0219-8896-467e-8649-36b1f89f27d4`