Backup on USB3 slow

mipi · 25. Juni 2015

Just trying to Backup 800gig over USB3 with the USB-Plugin ... it is terribly slow. 400gig in 24h, only half the job is done. What can i do to determine the bottleneck?

Grüße aus Berlin
Micha

ryecoaaron · 25. Juni 2015

Do you have the backports 3.16 kernel installed?

mipi · 25. Juni 2015

Can't remember ... I think so. ->

"Linux omv 3.16.0-0.bpo.4-amd64 #1 SMP Debian 3.16.7-ckt11-1~bpo70+1 (2015-06-08) x86_64 GNU/Linux"

says my System Information

ftriscari · 26. Juni 2015

Which type of hard drive are you using? Is it an SMR type?

mipi · 26. Juni 2015

I don't knoe what this means or how to determine it.

But I found this in the log (many!):

Jun 26 07:46:08 omv mount.davfs: open files exceed max cache size by 3539 MiBytes ... I use the flash memory plugin, maybe this is odd?

Micha

ftriscari · 26. Juni 2015

Some new Seagate hard drives (typically 8TB capacity) are built with a technology called SMR. They are much slower than normal hard drives with write speeds similar to the speeds you have reported.

If your hard drive is less than 8TB don’t worry about this as teh problem will be something else.

subzero79 · 26. Juni 2015

And the fs of the usb disk? Ntfs?

mipi · 26. Juni 2015

The data partition is a raid ext 4 and the backup partition is usb 3 / ext 4

subzero79 · 26. Juni 2015

This might sound stupid but I have to ask, is the USB port 3.0(blue color)

also do check that OS is detecting the usb 3 hub with lsusb

mipi · 26. Juni 2015

Big grin ... I will check this twice, also lsusb, when I'm within reach of the machine

mipi · 27. Juni 2015

using blue usb ... ssh-shell, native rsync

nohup rsync -avv --progress /media/hd0/data /media/uhd0/ &

output:

Code

data/data/daily.0/files/PIAGGIO_MSS_DE.pdf
    85139321 100%    3.90MB/s    0:00:20 (xfer#18, to-check=1245/1288)
data/data/daily.0/files/lvwa_vbb_002_antrag_online_201503.pdf
     1196739 100%    6.52MB/s    0:00:00 (xfer#25, to-check=1238/1288)

approx time to finish with 800 gig ... tataaaa ... 3 days. Normal?

subzero79 · 27. Juni 2015

And lsusb?

mipi · 27. Juni 2015

While complainig I forgot ... sry

Code

Before pluggin:
Bus 001 Device 002: ID 174c:2074 ASMedia Technology Inc. 
Bus 001 Device 003: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
Bus 001 Device 008: ID 0603:00f1 Novatek Microelectronics Corp. Keyboard
Bus 002 Device 002: ID 174c:3074 ASMedia Technology Inc. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub




After:
Bus 001 Device 002: ID 174c:2074 ASMedia Technology Inc. 
Bus 001 Device 003: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
Bus 001 Device 008: ID 0603:00f1 Novatek Microelectronics Corp. Keyboard
Bus 002 Device 002: ID 174c:3074 ASMedia Technology Inc. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 003: ID 067b:2773 Prolific Technology, Inc.

Alles anzeigen

What does mean to you?

Just trying to use a external esata Bay, but while it is noname hardware can't say anything about the internal chips ...

mipi · 27. Juni 2015

With esata it looks a little better:

Code

data/daily.0/files/NAS/FreeNAS-9.2.1.6-RELEASE-x64.iso
   207493120 100%   22.62MB/s    0:00:08 (xfer#71, to-check=1011/1150)

Jetzt mitmachen!