[cs615asa] How to read data from device

[Hongkun Zhang]

Following question, I use cat /dev/sdf command and see the file name which
I back up use dd.  Is that mean successful backup? Thanks.

Zhitao Chen <zchen69 at stevens.edu>于2018年5月16日 周三15:33写道：

> I tried this, but it cannot see anything, it just let me input anything
> endless
>
> On Wed, May 16, 2018 at 6:27 PM, Zhengkai Wei <zwei11 at stevens.edu> wrote:
>
>> I dont know how to read original data but
>> using cat /dev/sdf can see something.
>>
>> > 在 2018年5月16日，下午6:22，Zhitao Chen <zchen69 at stevens.edu> 写道：
>> >
>> > Hi,
>> >
>> > Is anyone know to read data from device? I use dd(1) to try to read the
>> data, e.g.
>> >
>> > # dd if=/dev/xbd3a | od -l
>> >
>> > but it just print 0's
>> >
>> > Then I tried to create a new volume and wrote some data to it, but it
>> also print 0's
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