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Hi Kirill,<br>
<br>
thank you for your very fast response. :)<br>
<br>
Am 31.03.2012 20:54, schrieb Kirill Kolyshkin:
<blockquote
cite="mid:CAGmPdrwp7QbPrQqtsd+H=dgoabVMG8KaOGVtHzxAxZa82O-=dg@mail.gmail.com"
type="cite">
<p>Ploop only supports ext4 and nfs </p>
</blockquote>
Is there any special reason for this? I'd really like to know the
technical aspects because I then might be able to make moosefs (or
another fuse based fs developed by myself) working with ploop. If I
can read about it in any documents, please redirect me to them :)<br>
<br>
Another question: is it (easily) possible make an openvz container
use a normal block devices for storage (which is formatted with ex.
ext4)? Before seeing ploop I thought this won't be possible, but now
with ploop it seems vzctl is only mounting /dev/ploopX somewhere and
then using this mount as the container's root. I'd especially be
interested in using ex. an iscsi backed block device with openvz
containers.<br>
<br>
Corin<br>
<br>
Am 31.03.2012 20:54, schrieb Kirill Kolyshkin:
<blockquote
cite="mid:CAGmPdrwp7QbPrQqtsd+H=dgoabVMG8KaOGVtHzxAxZa82O-=dg@mail.gmail.com"
type="cite">
<p>Ploop only supports ext4 and nfs </p>
<div class="gmail_quote">31.03.2012 22:50 пользователь "Corin
Langosch" <<a moz-do-not-send="true"
href="mailto:info@corinlangosch.com">info@corinlangosch.com</a>>
написал:<br type="attribution">
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> Hi,<br>
<br>
has anybody tried using the new ploop storage for openvz
images together with moosefs ( <a moz-do-not-send="true"
href="http://www.moosefs.org/" target="_blank">http://www.moosefs.org/</a>)?<br>
<br>
ploop mount -d /dev/ploop0 /mfs-mount/root.hdd<br>
Adding delta dev=/dev/ploop0 img=/mfs-mount/root.hdd (rw)<br>
PLOOP_IOC_ADD_DELTA /mfs-mount/root.hdd: Invalid argument<br>
<br>
In syslog I find:<br>
kernel: File on FS without backing device<br>
<br>
I thought it might be because ploop needs direct-io
(right?), but mounting with direct-io enabled seems not to
be supported by moosefs:<br>
<br>
mfsmount -o direct_io /mfs-mount<br>
mfsmaster accepted connection with parameters:
read-write,restricted_ip ; root mapped to root:root<br>
fuse: unknown option `direct_io'<br>
<br>
Has anybody got it working somehow? :)<br>
<br>
Btw: I'll also post this question to the moosefs mailinglist
as I'm pretty sure the devs there might have interesting
answers too.<br>
<br>
Corin<br>
<br>
</div>
<br>
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</blockquote>
</div>
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