[Users] issue with conversion of ESXi 5 centos VM to fedora19 ovirt host

Tue Jan 14 16:33:28 UTC 2014

On 14/01/14 16:30, Madhav V Diwan wrote:
> 
> HI all ,
> 
>  Any new ideas about this issue ?.. its blocking me from my ESX
> conversion ...

Hi, Madhav.

I don't see a response from you about the NFS permission test. Did you
do it? I remain convinced that this is your problem.

Matt

> 
> 
> 
> -----Original Message-----
> 
> To: Richard W.M. Jones <rjones at redhat.com>
> 
> Subject: Re: [Users] issue with conversion of ESXi 5 centos VM to
> fedora19 ovirt host
> Date: Sat, 11 Jan 2014 08:57:33 -0500
> 
> setting up a physical /tmp with 1777 permissions did not work ..
> 
>  and i see ovirt/vdsm is making a temporary nfsV4 mount of the target
> export domain to /tmp on the ovirt server 
> (what i thought was a hard link is actually a nfs mount for the duration
> of the conversion) 
> 
> so if the issue is not permissions on /tmp or the fact that we normally
> use  tmpfs , what is left?
> 
> 
> 
> 
> -----Original Message-----
> To: Richard W.M. Jones <rjones at redhat.com>
> 
> Subject: Re: [Users] issue with conversion of ESXi 5 centos VM to
> fedora19 ovirt host
> Date: Fri, 10 Jan 2014 17:26:34 -0500
> 
> 
> i have some spare disk on this server that i can make a /tmp partition
> from .. i am going to try that approach to rule out the tmpfs  as an
> issue
> 
> but woe to those who need such a large physical tmp partition for VM
> conversions.. 
> 
> 
> 
> -----Original Message-----
> From: Madhav V Diwan <mdiwan at diwanconsulting.com>
> To: Richard W.M. Jones <rjones at redhat.com>
> Cc: mbooth at redhat.com, users at ovirt.org
> Subject: Re: [Users] issue with conversion of ESXi 5 centos VM to
> fedora19 ovirt host
> Date: Fri, 10 Jan 2014 14:37:16 -0500
> 
> 
> [mdiwan at server3 ~]$ sudo getenforce
> [sudo] password for mdiwan: 
> Disabled
> 
> [mdiwan at server3 ~]$ cat /etc/fstab | grep "tmp"
> 
> [mdiwan at server3 ~]$ mount | grep "/tmp"
> tmpfs on /tmp type tmpfs (rw)
> 
> 
> selinux is disabled on this server .. at least till we figure this out
> 
> 
> but yes /tmp is a tmpfs mount 
> 
> which makes me wonder how it holds a 100 gig file.. it clearly
> doesn't ... it seems to have a temporary  "hardlink" to the OVIRT nfs
> export share when virt-v2v2 is running???
> 
> 
> 
> 
> 
> 
> -----Original Message-----
> From: Richard W.M. Jones <rjones at redhat.com>
> To: Madhav V Diwan <mdiwan at diwanconsulting.com>
> Cc: mbooth at redhat.com, users at ovirt.org
> Subject: Re: [Users] issue with conversion of ESXi 5 centos VM to
> fedora19 ovirt host
> Date: Fri, 10 Jan 2014 18:53:03 +0000
> 
> On Fri, Jan 10, 2014 at 12:48:43PM -0500, Madhav V Diwan wrote:
>>
>> Sorry richard 
>>
>> seems that it failed even when i tried to set that variable
>>
>> Maybe i set up the command incorrectly?
>>
>> here is what i ran
>>
>>
>> [root at server3 ~]# cat convrtesxhost.sh
>>
>> #!/bin/bash
>>
>> export LIBGUESTFS_TRACE=1 
>> export LIBGUESTFS_DEBUG=1
>> export LIBGUESTFS_BACKEND=direct
>>
>> virt-v2v -ic esx://ESX.decllc.biz/?no_verify=1 -o rhev -os
>> server3.decllc.biz:/localstorage/nfs --network ovirtmgmt razDC  2>&1 |
>> tee /var/log/virt-v2v.log 
> 
> It looks like this is correctly setting the environment variable:
> 
>> [root at server3 ~]# ./convrtesxhost.sh 
>> virt-v2v: Transferring storage volume razDC_razDC: 107374182400 bytes
>> libguestfs: trace: set_verbose true
>> libguestfs: trace: set_verbose = 0
>> libguestfs: trace: set_backend "direct"
>> libguestfs: trace: set_backend = 0
> 
> ^ see that it's set correctly here.
> 
> [...]
>> libguestfs: trace: add_drive
>> "/tmp/dgsXFuqz0X/8eff2927-3bff-4b15-bdd0-8c4e0f40652d/v2v.nCJ17ysL/e1660d18-b67b-4002-9835-10c654e7ee0e/a7afe4c5-ece8-4022-a8ec-964984a8db17" "format:raw" "iface:ide" "name:sda"
>> libguestfs: trace: add_drive = -1 (error)
>> /tmp/dgsXFuqz0X/8eff2927-3bff-4b15-bdd0-8c4e0f40652d/v2v.nCJ17ysL/e1660d18-b67b-4002-9835-10c654e7ee0e/a7afe4c5-ece8-4022-a8ec-964984a8db17: Permission denied at /usr/lib64/perl5/vendor_perl/Sys/Guestfs.pm line 670.
> 
> So this is not the bug I was thinking of.
> 
> (In fact it's obvious now I look closer.  This has nothing to do with
> libvirt, and the error message is being generated by libguestfs
> earlier on)
> 
> Is there some other reason that libguestfs would not be able to open
> that file in /tmp?  Perhaps there is an SELinux AVC?  Or /tmp has
> strange permissions ...?  Is /tmp a tmpfs mount?
> 
> I believe the actual code path you're hitting is this one:
> 
> https://github.com/libguestfs/libguestfs/blob/stable-1.22/src/drives.c#L660
> 
> I'm not exactly sure why that fails.
> 
> Rich.
> 
> 
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> 
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-- 
Matthew Booth, RHCA, RHCSS
Red Hat Engineering, Virtualisation Team

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