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Re: nfs mount vs. mount --bind [message #36513 is a reply to message #26405]

Sun, 28 June 2009 00:08

freedev
Messages: 3
Registered: June 2009
Location: Milan

Junior Member

Hi all,

I have a hundred of containers that must mount the same identical NFS share list, so I have for example: 5 NFS mount on hardware node and 5 hundreds of bind inside the containers.
But I'm experiencing a strange behavior when I stop a container: during the execution of unmount script (in /vz/private/$VEID/scripts/umount), not only the bind mount is unmounted but also the related NFS Volumes is unmounted.

So for example: if we have a NFS volume:

IPADDRESS:/VOLUME/share01 --> /usr/local/storage/share01

and a bind mount:

/usr/local/storage/share01 --> /vz/root/$VEID/usr/local/mnt/share01

when we stop the container and umount /vz/root/$VEID/usr/local/mnt/share01
also the NFS volume /usr/local/mnt/share01 is unmounted.

This problem is critical because if only one Container is stopped all remaining bind inside the containers become stale.
I found a workaround using the umount command with -l (lazy) parameter, so the bind is unmounted correctly without affect the NFS Volumes.

I apologize for a so long introduction, but the question is: could someone tell me if this behavior is related to OpenVZ?
The workaround we found it seems work well, someone think any counterindication or any suggestion?

Thanks in advance,
Vincenzo

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[Message index]

		[solved] nfs mount vs. mount --bind By: yahbluez on Mon, 21 January 2008 23:25
		Re: nfs mount vs. mount --bind By: vaverin on Wed, 23 January 2008 05:55
		Re: nfs mount vs. mount --bind By: freedev on Sun, 28 June 2009 00:08
		Re: nfs mount vs. mount --bind By: maratrus on Mon, 29 June 2009 10:12
		Re: nfs mount vs. mount --bind By: freedev on Mon, 29 June 2009 10:59
		Re: nfs mount vs. mount --bind By: maratrus on Mon, 29 June 2009 14:57
		Re: nfs mount vs. mount --bind By: freedev on Mon, 29 June 2009 16:52
		Re: nfs mount vs. mount --bind By: maratrus on Tue, 30 June 2009 04:51

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