Hi,
I've been actively using my USB 3.1 external 4 TB drive (Ext4 formatted) as a backup destination with HBS without any problem for almost a month. I connected the drive, did a backup and QNAP automatically ejected the drive once the backup was completed.
Today I've noticed my QNAP NAS (131P) doesn't recognize the external drive at all. It won't show up in Control Panel / External Storage, nor in File Station. I was running 4.5.4.1741. I tried disconnecting the drive multiple times, tried all of the USB ports, rebooting the NAS. Then I've tried upgrading to most recent 4.5.4.1800 + rebooting, but no luck, the external drive is still not being recognized. The LED on external hard drive lights up after connecting for a second, but then it goes dark and does nothing (it is not blinking like it should).
I've checked my HBS jobs, and they always finished successfully and ejected the drive. Last HBS backup job went 5 days ago, the drive was powered off since. If I run those jobs now, I obviously get "folder pair not accessible..." errors, since the destination drive is not mounted.
I've tried connecting this drive to my Windows 10 PC and it recognizes is just fine, but of course it says it can't read the data because it is not a Windows filesystem (obviously). I've tried connecting another external drive to the NAS and it works fine.
I found some debugging commands that might be helpful, here are the outputs.
This is the SSH output of "dmesg" command:
Code: Select all
[~] # dmesg
[ 4981.583330] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 4986.583025] usb 2-2: new SuperSpeed USB device number 77 using xhci_hcd
[ 4986.603350] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 4991.603055] usb 2-2: device descriptor read/8, error -110
[ 4992.263624] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 4997.263028] usb 2-2: new SuperSpeed USB device number 79 using xhci_hcd
[ 4997.283267] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5002.283036] usb 2-2: device descriptor read/8, error -110
[ 5002.393292] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5007.393036] usb 2-2: new SuperSpeed USB device number 79 using xhci_hcd
[ 5007.413307] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5012.413054] usb 2-2: device descriptor read/8, error -110
[ 5013.073580] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5018.073035] usb 2-2: new SuperSpeed USB device number 81 using xhci_hcd
[ 5018.093350] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5023.093040] usb 2-2: device descriptor read/8, error -110
[ 5023.203375] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5028.203035] usb 2-2: new SuperSpeed USB device number 81 using xhci_hcd
[ 5028.223264] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5033.223026] usb 2-2: device descriptor read/8, error -110
[ 5033.883539] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5038.883035] usb 2-2: new SuperSpeed USB device number 83 using xhci_hcd
[ 5038.903307] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5043.903028] usb 2-2: device descriptor read/8, error -110
[ 5044.013329] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5049.013029] usb 2-2: new SuperSpeed USB device number 83 using xhci_hcd
[ 5049.033348] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5054.033027] usb 2-2: device descriptor read/8, error -110
[ 5054.693621] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5059.693028] usb 2-2: new SuperSpeed USB device number 85 using xhci_hcd
[ 5059.713265] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5064.713362] usb 2-2: device descriptor read/8, error -110
[ 5064.823288] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5069.823033] usb 2-2: new SuperSpeed USB device number 85 using xhci_hcd
[ 5069.843308] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5074.843050] usb 2-2: device descriptor read/8, error -110
[ 5075.503578] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5080.503069] usb 2-2: new SuperSpeed USB device number 87 using xhci_hcd
[ 5080.523349] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5085.523181] usb 2-2: device descriptor read/8, error -110
[ 5085.633372] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5090.633041] usb 2-2: new SuperSpeed USB device number 87 using xhci_hcd
[ 5090.653267] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5095.653026] usb 2-2: device descriptor read/8, error -110
[ 5096.313536] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5101.313042] usb 2-2: new SuperSpeed USB device number 89 using xhci_hcd
[ 5101.333312] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5106.333029] usb 2-2: device descriptor read/8, error -110
[ 5106.443329] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5111.443026] usb 2-2: new SuperSpeed USB device number 89 using xhci_hcd
[ 5111.463347] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5116.463045] usb 2-2: device descriptor read/8, error -110
[ 5117.123620] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5122.123024] usb 2-2: new SuperSpeed USB device number 91 using xhci_hcd
[ 5122.143264] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5127.143023] usb 2-2: device descriptor read/8, error -110
[ 5127.253288] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5132.253029] usb 2-2: new SuperSpeed USB device number 91 using xhci_hcd
[ 5132.273431] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5137.273056] usb 2-2: device descriptor read/8, error -110
[ 5137.933579] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5142.933025] usb 2-2: new SuperSpeed USB device number 93 using xhci_hcd
[ 5142.953347] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5147.953023] usb 2-2: device descriptor read/8, error -110
[ 5148.063370] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5153.063022] usb 2-2: new SuperSpeed USB device number 93 using xhci_hcd
[ 5153.083263] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5158.083027] usb 2-2: device descriptor read/8, error -110
[ 5158.743536] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5163.743020] usb 2-2: new SuperSpeed USB device number 95 using xhci_hcd
[ 5163.763306] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5168.763040] usb 2-2: device descriptor read/8, error -110
[ 5168.873332] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5173.873032] usb 2-2: new SuperSpeed USB device number 95 using xhci_hcd
[ 5173.893346] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5178.893025] usb 2-2: device descriptor read/8, error -110
[ 5179.553620] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5184.553025] usb 2-2: new SuperSpeed USB device number 97 using xhci_hcd
[ 5184.573264] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5189.573019] usb 2-2: device descriptor read/8, error -110
[ 5189.683285] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5194.683017] usb 2-2: new SuperSpeed USB device number 97 using xhci_hcd
[ 5194.703304] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5199.703023] usb 2-2: device descriptor read/8, error -110
[ 5200.363579] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5205.363022] usb 2-2: new SuperSpeed USB device number 99 using xhci_hcd
[ 5205.383347] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5210.383019] usb 2-2: device descriptor read/8, error -110
[ 5210.493369] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5215.493019] usb 2-2: new SuperSpeed USB device number 99 using xhci_hcd
[ 5215.513262] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5220.513022] usb 2-2: device descriptor read/8, error -110
[ 5221.173535] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5226.173032] usb 2-2: new SuperSpeed USB device number 101 using xhci_hcd
[ 5226.193306] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5231.193029] usb 2-2: device descriptor read/8, error -110
[ 5231.303326] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
[ 5236.303032] usb 2-2: new SuperSpeed USB device number 101 using xhci_hcd
[ 5236.323349] xhci_hcd 0001:01:00.0: ERROR Unknown event condition 10, HC probably busted
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[~] # df -h
Filesystem Size Used Available Use% Mounted on
none 400.0M 205.1M 194.9M 51% /
devtmpfs 490.3M 8.0k 490.3M 0% /dev
tmpfs 64.0M 872.0k 63.1M 1% /tmp
tmpfs 500.2M 128.0k 500.0M 0% /dev/shm
tmpfs 16.0M 0 16.0M 0% /share
tmpfs 16.0M 0 16.0M 0% /mnt/snapshot/export
/dev/md9 493.5M 137.5M 345.6M 28% /mnt/HDA_ROOT
cgroup_root 500.2M 0 500.2M 0% /sys/fs/cgroup
/dev/mapper/cachedev1 2.1T 1.2T 976.0G 55% /share/CACHEDEV1_DATA
/dev/mapper/cachedev2 1.4T 355.8G 1.0T 26% /share/CACHEDEV2_DATA
/dev/md13 417.0M 300.6M 116.4M 72% /mnt/ext
tmpfs 16.0M 84.0k 15.9M 1% /share/CACHEDEV1_DATA/.samba/lock/msg.lock
tmpfs 16.0M 0 16.0M 0% /mnt/ext/opt/samba/private/msg.sock
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[~] # cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
md1 : active raid1 sda3[0]
3897063616 blocks super 1.0 [1/1] [U]
md322 : active raid1 sda5[0]
7235136 blocks super 1.0 [2/1] [U_]
bitmap: 1/1 pages [4KB], 65536KB chunk
md256 : active raid1 sda2[0]
530112 blocks super 1.0 [2/1] [U_]
bitmap: 1/1 pages [4KB], 65536KB chunk
md13 : active raid1 sda4[0]
458880 blocks super 1.0 [64/1] [U_______________________________________________________________]
bitmap: 1/1 pages [4KB], 65536KB chunk
md9 : active raid1 sda1[0]
530048 blocks super 1.0 [64/1] [U_______________________________________________________________]
bitmap: 1/1 pages [4KB], 65536KB chunk
unused devices: <none>
What could be the issue?
Thank you very much.
IMMEDIATE EDIT: Ok, right after posting this post I've noticed the LED on my drive is flashing and the drive is recognized by the NAS, I was able to run the HBS jobs successfully. However, I literally did nothing for the past 2 hours or so - what could be the issue? Is it possible it just got fixed by itself? How could I prevent this in the future? Just another info from top of my head, RAM and CPU usage was low, so that was not an issue.