[Users] Vzmigrate fails (unsupported filesystem nfsd)
Roman Haefeli
reduzent at gmail.com
Fri Sep 12 04:00:47 PDT 2014
Hi
This might be not a bug, but a problem of having different CPU models on
both host nodes. You cannot always live-migrate between different CPU
models as not all have similar capabilities.
It's still possible to offline-migrate, because when a CT starts on a
mode with lesser capabilities, it would simply not use those.
Compare the output of 'cat /proc/cpuinfo' of both hostnodes.
Roman
On Thu, 2014-09-11 at 21:43 +0800, Corrado Fiore wrote:
> Dear All,
>
> I have two OpenVZ nodes running the following:
>
> ploop.x86_64 1.12.1-1
> ploop-lib.x86_64 1.12.1-1
> vzctl.x86_64 4.7.2-1
> vzctl-core.x86_64 4.7.2-1
> vzkernel.x86_64 2.6.32-042stab093.4
> vzkernel-devel.x86_64
> vzquota.x86_64 3.1-1
>
> I'm trying to live migrate a container which runs nfsd. Both nodes are configured in the same way, therefore nfsd module is loaded:
>
> # lsmod | grep nfs
> pio_nfs 17576 0
> ploop 116256 32 pio_nfs,pio_direct,pfmt_raw,pfmt_ploop1
> nfsd 311145 13
> nfs 442468 7 pio_nfs,vzrst,vzcpt
> lockd 77189 3 vzrst,nfsd,nfs
> fscache 55684 1 nfs
> auth_rpcgss 44949 2 nfsd,nfs
> nfs_acl 2663 2 nfsd,nfs
> sunrpc 268245 37 pio_nfs,nfsd,nfs,lockd,auth_rpcgss,nfs_acl
>
> Whenever I try to live migrate the container, I get the following error:
>
> # vzmigrate -r yes --ssh="-p 16501" --keep-dst --online -v destination_host 161
> Locked CT
> Starting live migration of CT 161 to destination_host
> OpenVZ is running...
> Checking for CPT version compatibility
> Checking for CPU flags compatibility
> Error: Unsupported filesystem nfsd
> Insufficient CPU capabilities: can't migrate
> Error: Error: CPU capabilities check failed!
> Error: Destination node CPU is not compatible
> Error: Can't continue live migration
>
> At that point, the lock file remains and has to be manually deleted.
>
> On the other hand, offline migration of that container works fine.
>
> The funny thing is that if I try to live migrate the container back to the original host, I get the same error (Unsupported filesystem nfsd / Insufficient CPU capabilities: can't migrate).
>
> Shall I open a bug report for this?
>
> Regards,
> Corrado Fiore
>
>
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