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Bug 738872 - EXT4 could not open disk image
EXT4 could not open disk image
Status: RESOLVED DUPLICATE of bug 679837
Product: gnome-boxes
Classification: Applications
Component: general
3.14.x
Other Linux
: Normal blocker
: 3.22
Assigned To: GNOME Boxes maintainer(s)
GNOME Boxes maintainer(s)
Depends on:
Blocks:
 
 
Reported: 2014-10-20 14:39 UTC by Alejandro
Modified: 2016-03-31 13:22 UTC
See Also:
GNOME target: ---
GNOME version: ---


Description Alejandro 2014-10-20 14:39:29 UTC 
On EXT4 filesystems no virtualmachine can be started because the default disk creation sets the cache='none'.
The solutions would be to delete the cache entry or to set it to default.

<disk type='file' device='disk'>
 <driver name='qemu' type='qcow2'/>
Comment 1 Zeeshan Ali 2014-10-20 15:18:33 UTC 
hmm.. i didn't know ext4 is one of those filesystem. Are you sure?

In any case, its dup of bug#679837 which should be re-opened if this is a problem on plain ext4 filesystem.

*** This bug has been marked as a duplicate of bug 679837 ***
Comment 2 Daniel P. Berrange 2014-10-20 15:36:23 UTC 
FYI, there must be some other unusual factor involved in the host configuration, because the ext4 filesystem support O_DIRECT (and thus cache=none) just fine.
Comment 3 Alejandro 2014-10-20 15:45:05 UTC 
I use the arch distribution, and over the IRC channel a few people who tried it didn't get it to work. May it be because my homefolder is being encrypted?
Comment 4 Daniel P. Berrange 2014-10-20 15:53:36 UTC 
Ok, so presumably you're actually using ecryptfs for this encryption layer rather than plain ext4 ?  If so the problem would be lack of O_DIRECT in ecryptfs, not that that immediately helps with a solution.
Comment 5 Alejandro 2014-10-21 00:36:40 UTC 
Well it helps us because of this:
<a href="https://bugzilla.redhat.com/show_bug.cgi?id=960793">Red Hat Bugzilla – Bug 960793
</a>
It seems there is no interest in creating an solution.
Comment 6 Zeeshan Ali 2014-10-21 11:27:29 UTC 
(In reply to comment #5)
> Well it helps us because of this:
> <a href="https://bugzilla.redhat.com/show_bug.cgi?id=960793">Red Hat Bugzilla –
> Bug 960793
> </a>
> It seems there is no interest in creating an solution.

Well comment 5 there is from yesterday so you might have changed that with this bug actually. :) We'll see but I think its less about interest and more about prioritization and limited resources..