QNAP "The Server is busy or the network is disconnected"

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Joburgtaxi
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Re: QNAP "The Server is busy or the network is disconnected"

Post by Joburgtaxi » Sat Mar 09, 2019 4:16 am

Thanks for the reply

I have tried what you suggest but still the same.

I have downloaded the logs, what exactly am I looking for?

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Re: QNAP "The Server is busy or the network is disconnected"

Post by iam@nas » Sat Mar 09, 2019 5:16 am

/var/log/network/err.log may show that the interface goes up&down. I'm not sure where to look and what can be found.
Does it happen with all browsers?

If you have shell access: "ifconfig -a" should show all interfaces and their error counters. At least my qvs0 has a lot of dropped packets, all other interfaces are fine (0).

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qvs0 Link encap:Ethernet  HWaddr ...
inet addr:...
UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
RX packets:12629253 errors:0 dropped:310675 overruns:0 frame:0
TX packets:6510475 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:15488391071 (14.4 GiB)  TX bytes:3847144538 (3.5 GiB)
From a Windows PC "ping /t nas-ip" (Mac/Linux PC "ping nas-ip" ) should show a permanent connection and no lost or delayed packets (<= 1.000 ms).
A duplicate IP or ARP issues may result in such strange issues. "arp -a nas-ip" should always show the same HW / MAC address.

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Re: QNAP "The Server is busy or the network is disconnected"

Post by Joburgtaxi » Sat Mar 09, 2019 6:27 am

It all looks ok with no dropped packets yet still transfer speed is abuot 355kb/s and somtimes peeks for a few seconds to 2mb/s then drops down again.

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[~] # ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:08:9B:CB:E7:BE
          UP BROADCAST NOTRAILERS MULTICAST  MTU:1500  Metric:1
          RX packets:1029851 errors:0 dropped:0 overruns:0 frame:0
          TX packets:329519 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:532
          RX bytes:1428618812 (1.3 GiB)  TX bytes:30542951 (29.1 MiB)
          Interrupt:15

eth1      Link encap:Ethernet  HWaddr 00:08:9B:CB:E7:BF
          inet addr:192.168.0.36  Bcast:192.168.0.255  Mask:255.255.255.0
          UP BROADCAST NOTRAILERS RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2076128 errors:0 dropped:0 overruns:0 frame:0
          TX packets:761379 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:532
          RX bytes:2559308842 (2.3 GiB)  TX bytes:62508018 (59.6 MiB)
          Interrupt:11

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:48994 errors:0 dropped:0 overruns:0 frame:0
          TX packets:48994 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:19565649 (18.6 MiB)  TX bytes:19565649 (18.6 MiB)

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Re: QNAP "The Server is busy or the network is disconnected"

Post by iam@nas » Sat Mar 09, 2019 6:35 pm

Please try to ping your NAS for a long time to detect network errors if there are any.

Code: Select all

Windows: ping /t -f -l 1472 192.168.0.36
Linux: ping -m do -s 1472 192.168.0.36
Specifying a larger size like 1474 should always fail as the MTU is 1500 and the packets are not fragmented.

Joburgtaxi
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Re: QNAP "The Server is busy or the network is disconnected"

Post by Joburgtaxi » Sun Mar 10, 2019 4:44 am

Hi

The ping is rock steady

Code: Select all

Reply from 192.168.0.36: bytes=1472 time=30ms TTL=64
Reply from 192.168.0.36: bytes=1472 time=30ms TTL=64
Reply from 192.168.0.36: bytes=1472 time=37ms TTL=64
Reply from 192.168.0.36: bytes=1472 time=32ms TTL=64
Reply from 192.168.0.36: bytes=1472 time=26ms TTL=64
Reply from 192.168.0.36: bytes=1472 time=26ms TTL=64
Reply from 192.168.0.36: bytes=1472 time=31ms TTL=64
Reply from 192.168.0.36: bytes=1472 time=30ms TTL=64
Reply from 192.168.0.36: bytes=1472 time=25ms TTL=64
Reply from 192.168.0.36: bytes=1472 time=31ms TTL=64
Reply from 192.168.0.36: bytes=1472 time=36ms TTL=64
Reply from 192.168.0.36: bytes=1472 time=31ms TTL=64
Reply from 192.168.0.36: bytes=1472 time=25ms TTL=64
Reply from 192.168.0.36: bytes=1472 time=23ms TTL=64
Reply from 192.168.0.36: bytes=1472 time=30ms TTL=64
Reply from 192.168.0.36: bytes=1472 time=31ms TTL=64
Reply from 192.168.0.36: bytes=1472 time=22ms TTL=64
Reply from 192.168.0.36: bytes=1472 time=26ms TTL=64
Reply from 192.168.0.36: bytes=1472 time=37ms TTL=64
Reply from 192.168.0.36: bytes=1472 time=26ms TTL=64
Reply from 192.168.0.36: bytes=1472 time=39ms TTL=64
Reply from 192.168.0.36: bytes=1472 time=23ms TTL=64

Ping statistics for 192.168.0.36:
    Packets: Sent = 22, Received = 22, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 22ms, Maximum = 39ms, Average = 29ms

Joburgtaxi
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Re: QNAP "The Server is busy or the network is disconnected"

Post by Joburgtaxi » Sun Mar 10, 2019 4:51 am

Here are some more test results

Code: Select all

Kernel Log

ata1: hard resetting link -- Count:1
ata2: hard resetting link -- Count:11
ata3: hard resetting link -- Count:2
ata4: hard resetting link -- Count:1
exception -- Count:12
bus error -- Count:1

[ File system test report ]

Test volume : /share/MD0_DATA
Block device : /dev/md0
Left space : 11248719 MB
Test start : Sat Mar 9 12:32:12 GMT 2019
Test finish : Sat Mar 9 12:49:49 GMT 2019
Write 2GB performance : 2.27 MB/s
Read 2GB performance : 13.65 MB/s
Use extents : 137

[ Free frags before test ]

Device: /dev/md0
Blocksize: 4096 bytes

[ File flags on this test ]

Filesystem type is: ef53
File size of /share/MD0_DATA/test_2G is 2147483648 (524288 blocks, blocksize 4096)
ext logical physical expected length flags
0 0 46878720 4096 
1 4096 46884864 46882815 2048 
2 6144 46888960 46886911 2048 
3 8192 46893056 46891007 4096 
4 12288 46899200 46897151 2048 
5 14336 46903296 46901247 2048 
6 16384 46907392 46905343 2048 
7 18432 46911488 46909439 4096 
8 22528 46917632 46915583 2048 
9 24576 46921728 46919679 2048 
10 26624 46925824 46923775 2048 
11 28672 46929920 46927871 2048 
12 30720 46934016 46931967 4096 
13 34816 46940160 46938111 4096 
14 38912 46946304 46944255 4096 
15 43008 46952448 46950399 4096 
16 47104 46958592 46956543 4096 
17 51200 46964736 46962687 2048 
18 53248 46968832 46966783 4096 
19 57344 46974976 46972927 2048 
20 59392 46981120 46977023 4096 
21 63488 46987264 46985215 4096 
22 67584 46993408 46991359 16384 
23 83968 47011840 47009791 6144 
24 90112 47020032 47017983 4096 
25 94208 47026176 47024127 2048 
26 96256 47030272 47028223 4096 
27 100352 47036416 47034367 4096 
28 104448 47042560 47040511 4096 
29 108544 47048704 47046655 2048 
30 110592 47052800 47050751 2048 
31 112640 47056896 47054847 4096 
32 116736 47063040 47060991 4096 
33 120832 47069184 47067135 4096 
34 124928 47075328 47073279 4096 
35 129024 47081472 47079423 10240 
36 139264 47093760 47091711 6144 
37 145408 47101952 47099903 4096 
38 149504 47108096 47106047 4096 
39 153600 47114240 47112191 4096 
40 157696 47120384 47118335 2048 
41 159744 47124480 47122431 8192 
42 167936 47134720 47132671 2048 
43 169984 47138816 47136767 8192 
44 178176 47149056 47147007 4096 
45 182272 47155200 47153151 2048 
46 184320 47159296 47157247 8192 
47 192512 47169536 47167487 2048 
48 194560 47173632 47171583 8192 
49 202752 47183872 47181823 2048 
50 204800 47220736 47185919 2048 
51 206848 47224832 47222783 2048 
52 208896 47228928 47226879 4096 
53 212992 47235072 47233023 2048 
54 215040 47239168 47237119 4096 
55 219136 47245312 47243263 4096 
56 223232 47251456 47249407 4096 
57 227328 47257600 47255551 2048 
58 229376 47261696 47259647 6144 
59 235520 47269888 47267839 4096 
60 239616 47276032 47273983 4096 
61 243712 47282176 47280127 2048 
62 245760 47286272 47284223 4096 
63 249856 47292416 47290367 2048 
64 251904 47296512 47294463 4096 
65 256000 47302656 47300607 2048 
66 258048 47306752 47304703 4096 
67 262144 47312896 47310847 2048 
68 264192 47316992 47314943 2048 
69 266240 47321088 47319039 6144 
70 272384 47329280 47327231 2048 
71 274432 47333376 47331327 4096 
72 278528 47339520 47337471 2048 
73 280576 47343616 47341567 2048 
74 282624 47347712 47345663 4096 
75 286720 47353856 47351807 2048 
76 288768 47357952 47355903 4096 
77 292864 47364096 47362047 2048 
78 294912 47368192 47366143 4096 
79 299008 47374336 47372287 2048 
80 301056 47378432 47376383 4096 
81 305152 47384576 47382527 4096 
82 309248 47390720 47388671 4096 
83 313344 47396864 47394815 4096 
84 317440 47403008 47400959 2048 
85 319488 47407104 47405055 2048 
86 321536 47411200 47409151 6144 
87 327680 47419392 47417343 2048 
88 329728 47423488 47421439 4096 
89 333824 47429632 47427583 2048 
90 335872 47433728 47431679 4096 
91 339968 47439872 47437823 4096 
92 344064 47446016 47443967 16384 
93 360448 47464448 47462399 2048 
94 362496 47468544 47466495 8192 
95 370688 47478784 47476735 4096 
96 374784 47484928 47482879 4096 
97 378880 47491072 47489023 4096 
98 382976 47497216 47495167 8192 
99 391168 47507456 47505407 2048 
100 393216 47511552 47509503 4096 
101 397312 47517696 47515647 8192 
102 405504 47527936 47525887 2048 
103 407552 47532032 47529983 4096 
104 411648 47538176 47536127 2048 
105 413696 47542272 47540223 6144 
106 419840 47550464 47548415 2048 
107 421888 47554560 47552511 4096 
108 425984 47560704 47558655 4096 
109 430080 47566848 47564799 14336 
110 444416 47583232 47581183 4096 
111 448512 47589376 47587327 2048 
112 450560 47593472 47591423 2048 
113 452608 47597568 47595519 4096 
114 456704 47603712 47601663 4096 
115 460800 47609856 47607807 2048 
116 462848 47613952 47611903 4096 
117 466944 47620096 47618047 4096 
118 471040 47626240 47624191 4096 
119 475136 47632384 47630335 4096 
120 479232 47638528 47636479 2048 
121 481280 47642624 47640575 2048 
122 483328 47646720 47644671 2048 
123 485376 47650816 47648767 4096 
124 489472 47656960 47654911 2048 
125 491520 47661056 47659007 6144 
126 497664 47671296 47667199 2048 
127 499712 47675392 47673343 2048 
128 501760 47679488 47677439 2048 
129 503808 47683584 47681535 2048 
130 505856 47689728 47685631 2048 
131 507904 47693824 47691775 2048 
132 509952 47697920 47695871 4096 
133 514048 47704064 47702015 2048 
134 516096 47742976 47706111 4096 
135 520192 47749120 47747071 2048 
136 522240 47753216 47751167 2048 eof

Disk Performance

Path: /dev/sda
Performance: 10.13 MB/sec
Path: /dev/sdb
Performance: 2.47 MB/sec
Path: /dev/sdc
Performance: 12.97 MB/sec
Path: /dev/sdd
Performance: 67.88 MB/sec

Joburgtaxi
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Re: QNAP "The Server is busy or the network is disconnected"

Post by Joburgtaxi » Sun Mar 10, 2019 9:09 am

Ok I have found out what the cause of the slowness is but it ** !!!!

I uninstalled ALL apps from the NAS all I left was Control Panel and App Center and hey presto my network speeds and web interface speeds increased dramatically, download up to 25-30 MB/s.

I then went and instilled just 1 app which was FileFlex connector and bam speeds hit the floor again!! So it seems to me the device is not able to handle anything added and will only run efficiently on bare bones which is really not good. :( :( :( :(

also a process called freshclam which has something to do with anti virus seems to hog a lot of resource and hence it also heavily reduces the download speed, killing that process makes a big difference to the download speed.I realise that this is probably not best practice but seems to be a trade off that needs to be made for speed.

in ssh type
#top
look for the freshclam process and find PID

type
~kill (PID NUMBER)

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Re: QNAP "The Server is busy or the network is disconnected"

Post by iam@nas » Sun Mar 10, 2019 4:14 pm

You may have scheduled a job in 'Control Panel > Applications > Antivirus' which runs ages, depending on your folder selection. You may need to modify or disable the job to make sure that it only runs when the system is not used.
If you really have only 256 MB RAM you should be lucky that the NAS boots at all. No wonder that apps use all disk cache and/or page out relevant pages.

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Re: QNAP "The Server is busy or the network is disconnected"

Post by iam@nas » Fri Mar 15, 2019 3:30 am

Do you see some strange things in the resource monitor? Does the CPU usage corresponds to your download speed?

One may create a PHP script to output 1GB dummy data without reading a file. This should allow to measure the network speed without a disk IO bottleneck (if any).

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Re: QNAP "The Server is busy or the network is disconnected"

Post by Moogle Stiltzkin » Sun Jun 02, 2019 9:51 am

i got this issue too plz help :(

few things happened recently

1. updated to qts 4.4.1 from 4.3.6
2. a hdd disk 4 got dropped. did a raid rebuild
3. forced a shutdown because the queue for shutting down services was very slow. after reboot it began to rebuild raid. in log it did not point out any specific hdd with a problem.
4. did a long smart test, scan disk and filesystem check. and also reflashed firmware 4.4.1



ran the test as suggested, no issue here

Code: Select all

Microsoft Windows [Version 10.0.17763.503]
(c) 2018 Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>ping /t 192.168.0.210

Pinging 192.168.0.210 with 32 bytes of data:
Reply from 192.168.0.210: bytes=32 time<1ms TTL=64
Reply from 192.168.0.210: bytes=32 time<1ms TTL=64
Reply from 192.168.0.210: bytes=32 time<1ms TTL=64
Reply from 192.168.0.210: bytes=32 time<1ms TTL=64
Reply from 192.168.0.210: bytes=32 time<1ms TTL=64
Reply from 192.168.0.210: bytes=32 time<1ms TTL=64
Reply from 192.168.0.210: bytes=32 time<1ms TTL=64
Reply from 192.168.0.210: bytes=32 time<1ms TTL=64
Reply from 192.168.0.210: bytes=32 time<1ms TTL=64
Reply from 192.168.0.210: bytes=32 time<1ms TTL=64
Reply from 192.168.0.210: bytes=32 time<1ms TTL=64

i see drop packets here

Code: Select all

[~] # ifconfig
[~] # eth0      Link encap:Ethernet  HWaddr xx:xx:xx:xx:xx:xx
-sh: eth0: command not found
[~] #           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
-sh: UP: command not found
[~] #           RX packets:816114 errors:0 dropped:337 overruns:0 frame:0
-sh: RX: command not found
[~] #           TX packets:649319 errors:0 dropped:0 overruns:0 carrier:0
-sh: TX: command not found
[~] #           collisions:0 txqueuelen:1000
-sh: collisions:0: command not found
[~] #           RX bytes:989959484 (944.0 MiB)  TX bytes:593107548 (565.6 MiB)
-sh: syntax error near unexpected token `('
[~] #           Memory:f6900000-f691ffff
-sh: Memory:f6900000-f691ffff: command not found
[~] #


any ideas whats going on :(



*update

now it shows

Code: Select all

Microsoft Windows [Version 10.0.17763.503]
(c) 2018 Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>ping /t 192.168.0.210

Pinging 192.168.0.210 with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
and the qnap rebooted on it's own :'
NAS
[Main Server] QNAP TS-877 w. 4tb [ 3x HGST Deskstar NAS (HDN724040ALE640) & 1x WD RED NAS ] EXT4 Raid5 & 2 x m.2 SATA Samsung 850 Evo raid1 + 16gb ddr4 Crucial + QWA-AC2600 wireless adapter.
[Backup] QNAP TS-653A w. 5x 2TB Samsung F3 (HD203WI) EXT4 Raid5
[^] QNAP TS-659 Pro II 1x 4TB HGST Deskstar NAS
[^] QNAP TS-509 Pro w. 4x 1TB WD RE3 (WD1002FBYS) EXT4 Raid5
[^] QNAP TS-228 w. 1x 1TB WD RE3 (WD1002FBYS)
[^] QNAP TS-128
Mobile NAS TBS-453DX w. 2x Crucial MX500 500gb EXT4 raid1

Network
Asus AC68U Router|100dl/50ul MBPS FTTH Internet | Windows 10, WC PC-Intel i7 920 Ivy bridge desktop (1x 512gb Samsung 850 Pro SSD + 1x 4tb HGST Ultrastar 7K4000)


Guides & articles
[Review] Moogle's QNAP experience
[Review] Moogle's TS-877 review

https://www.patreon.com/mooglestiltzkin

iam@nas
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Re: QNAP "The Server is busy or the network is disconnected"

Post by iam@nas » Mon Jun 03, 2019 3:23 am

The shell behaves very strange. If you still have shell access you may monitor the system usage ("vmstat 1") to make sure that there are enough free resources.

Did you update to the latest 4.3.6 and with all apps updated before going to 4.4x? Or did you skip some updates? (I updated everything before going to 4.4.x beta as I assume that updates from older versions/apps are often not tested.)

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Re: QNAP "The Server is busy or the network is disconnected"

Post by neilhu » Mon Jun 10, 2019 8:02 am

I have a TS-453A as well and getting most if not all the issues you describe. I have never had this system stable.
I thought I would start from scratch. I purchased new 10TB drives [WD Red, which are on the compatibility list] and started from a factory reset. I built with a RAID 5, currently 1 storage pool, 1 volume and no data on the system. I have purposely not transferred any data onto it. And still I get issues logging in, network disconnected and when I ssh in and reboot, the volume needs a filesystem check.

I know Qnap systems work, since I have an older TS-569 Pro and this has always worked as it should, never had any issues.
I have no idea what to do now with the TS-453A - it seems just not to work properly and I don't trust it with any data

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Re: QNAP "The Server is busy or the network is disconnected"

Post by P3R » Mon Jun 10, 2019 1:20 pm

The error message in this thread is very generic and can be caused by just about anything; hardware, software and/or incorrect configurations. The thread now attracts everyone with odd problems. Notice that there's no common pattern with anything here, NAS models are all over the place (cat1, cat2, old and new) and everyone is using different firmware versions. Good things never come out of these threads as they're just a dump of complains for those with unsolved odd issues but with far too many unknowns for anybody to be able to help.

For those that really want to be helped you should find better threads (users of beta software should obviously be in a beta forum) or if you can't find a thread, start your own. And as usual, form the start state the facts about what NAS model, disk models and other hardware, what software is used and tell us how it's all configured. The more experienced here in the forum get fed up with having to ask for every little detail every time and in the end they get reluctant to help when they need to spend more time asking for all the details of the installations than actually getting to think about the issues.
RAID have never ever been a replacement for backups. Without backups on a different system (preferably placed at another site), you will eventually lose data!

A non-RAID configuration (including RAID 0, which isn't really RAID) with a backup on a separate media protects your data far better than any RAID-volume without backup.

All data storage consists of both the primary storage and the backups. It's your money and your data, spend the storage budget wisely or pay with your data!

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