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<p>You'll get same results as from editing the same file from two
different processes without any lxc involved: anything can happen
to a file, but the filesystem must be totally OK with it.<br>
</p>
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--<br>
<br>
With Best Regards,<br>
Marat Khalili<br>
<br>
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<div class="moz-cite-prefix">On 21/04/17 13:09, Werner Hack wrote:<br>
</div>
<blockquote
cite="mid:1ebd04b7-85de-6b4d-feea-2d04c28b41e8@uni-ulm.de"
type="cite">
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<tt>Maybe I have not expressed myself clearly.<br>
I want to add the same data directory to multiple containers
(bind mount).<br>
The data is stored in a zfs pool if this is relevant to my
question.<br>
<br>
Now, we presume there are two independant users (or services)
working on two different containers.<br>
They are editing the same file on the common data storage at the
same time. <br>
Can this corrupt my filesystem or is this managed by the host
(or kernel or whatever) correctly?<br>
Could this be a problem and I damage my filesystem this way?<br>
<br>
Thanks in advance<br>
Werner Hack<br>
</tt><br>
<br>
<div class="moz-cite-prefix">On 04/20/2017 03:37 PM, T.C 吳天健
wrote:<br>
</div>
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cite="mid:CAAPdAfH1WfiOBqsgCc442af7dxEPjbVaydSYiZ-i1zN56sSDTg@mail.gmail.com"
type="cite">
<div dir="auto">I think lxc just do bind mount for you. It will
or not damage file depends on the device file nature. For
example, block device allows multiple process read-write.
Some other drive file might not allow multiple entry.</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">2017年4月20日 下午9:21，"Werner Hack" <<a
moz-do-not-send="true"
href="mailto:werner.hack@uni-ulm.de" target="_blank">werner.hack@uni-ulm.de</a>>寫道：<br
type="attribution">
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Hi all,<br>
<br>
I want to mount (lxc device add) the same path on multiple
containers.<br>
Is this possible or will I damage my filesystem this way?<br>
How is concurrent (write) access to the same directory
from multiple containers handled?<br>
Is this managed with lxd daemon or the kernel and I have
not to worry about it?<br>
Or have I to use a cluster filesystem in this case?<br>
<br>
Thanks in advance<br>
Werner Hack<br>
<br>
<br>
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