Hi Michal,
This is how snippets from my XML looks like. Full XML at the end of the mail..
<emulator>/usr/sbin/libvirt_lxc</emulator>
<filesystem type='mount' accessmode='passthrough'>
<source dir='/vol/usb1/iox/repo-lxc/utd/rootfs_mnt'/>
<target dir='/'/>
</filesystem>
<filesystem type='mount' accessmode='passthrough'>
<source dir='/flash/dir'/>
<filesystem type='mount' accessmode='passthrough'>
<source dir='/vol/usb1/iox/repo-lxc/utd/rootfs_mnt'/>
<target dir='/'/>
</filesystem>
<filesystem type='mount' accessmode='passthrough'>
<source dir='/flash/dir'/>
<target dir='/flash/dir'/>
</filesystem>
</filesystem>
The issue I am facing is, my container doesnt start. Fails at mounting this /flash/dir with below message.
2021-06-09 06:52:55.548+0000: 1: error : lxcContainerMountFSBind:1223 : Failed to bind mount directory /.oldroot/flash/dir to /flash/dir: No such file or directory
I see that .oldroot is added to this path and figured out that lxcContainerPivotRoot is creating and mounting all folders under rootfs to rootfs/.oldroot
But durig pivot root, this path /flash/dir is unaccessible and hence we don't seem to create this .oldroot/flash/dir.
Later on, during lxcContainerMountFSBind(), /.oldroot/flash/dir bind mount fails.
Any thoughts?
Thanks
Priyanka
====
Full XML
====
<domain type='lxc'>
<name>try</name>
<memory>1048576</memory>
<currentMemory>1048576</currentMemory>
<vcpu placement='static'>1</vcpu>
<os>
<type arch='x86_64'>exe</type>
<init>/sbin/init</init>
</os>
<devices>
<emulator>/usr/sbin/libvirt_lxc</emulator>
<filesystem type='mount' accessmode='passthrough'>
<source dir='/vol/usb1/iox/repo-lxc/utd/rootfs_mnt'/>
<target dir='/'/>
</filesystem>
<filesystem type='mount' accessmode='passthrough'>
<source dir='/flash/dir'/>
<target dir='/flash/dir'/>
</filesystem>
<console type='pty'>
<target type='lxc' port='2'/>
</console>
</devices>
</domain>
<name>try</name>
<memory>1048576</memory>
<currentMemory>1048576</currentMemory>
<vcpu placement='static'>1</vcpu>
<os>
<type arch='x86_64'>exe</type>
<init>/sbin/init</init>
</os>
<devices>
<emulator>/usr/sbin/libvirt_lxc</emulator>
<filesystem type='mount' accessmode='passthrough'>
<source dir='/vol/usb1/iox/repo-lxc/utd/rootfs_mnt'/>
<target dir='/'/>
</filesystem>
<filesystem type='mount' accessmode='passthrough'>
<source dir='/flash/dir'/>
<target dir='/flash/dir'/>
</filesystem>
<console type='pty'>
<target type='lxc' port='2'/>
</console>
</devices>
</domain>
On Wed, Jun 23, 2021 at 1:46 PM Michal Prívozník <mprivozn@xxxxxxxxxx> wrote:
On 6/22/21 6:17 PM, Priyanka Gupta wrote:
> Hi,
>
> Could someone pls let me know when this condition could possibly arise?
> lxcContainerResolveSymlinks:621 : Skipped unaccessible '/flash/dir'
>
> The code seems to call access('/flash/dir', F_OK) which shall only check
> for existence of this directory '/flash/dir'. I have this directory
> created on my host. Is there anything that I am missing?
>
Hey, looking into the code the function is ran from a mount namespace
thus the path may not exist. But is there a problem you are seeing? If
so, can you share your LXC XML and describe the problem? I mean, the
message you mention is just a debug printing, harmless.
Michal
