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  1. #1

    Problem Starting Container: ioprio

    Hi all,

    I'm having problems starting containers on a test node, I keep getting the following error and the VPS doesn't boot up:

    Warning: ioprio feature is not supported by kernel. skipped ioprio configure
    Container start failed
    So clearly I don't have ioprio setup in the kernel, but I have no idea how to go about putting it into the kernel. The kernel I'm currently using is a custom compiled from source one, as the defaut wouldn't work (using an OVH server).

    Any help would be much appreciated!

    Oh and I'm using SolusVM if that helps =)

  2. #2
    Whats the output of uname -a ?

    Is it the custom burstnet vz kernel ? as i recall it does not support ioprio.

    Use the generic OpenVZ kernel for CentOS 5.
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  3. #3
    Do a 'strace' while starting the vps, it should give you an idea where exactly the problem is

    strace vzctl start veid
    And yes, what is the output of

    uname -a
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  4. #4
    Quote Originally Posted by Soluslabs View Post
    Is it the custom burstnet vz kernel ? as i recall it does not support ioprio.
    No, it's one that I compiled from source using the OpenVZ instructions and the OVH config file.

    Quote Originally Posted by Soluslabs View Post
    Use the generic OpenVZ kernel for CentOS 5.
    I tried that but it doesn't seem to work on the OVH server.

    Do a 'strace' while starting the vps, it should give you an idea where exactly the problem is
    Here's the bit with the error:

    Code:
    write(3, "2010-08-16T16:01:45+0200 vzctl :"..., 58) = 58
    syscall_499(0x65, 0x4, 0xffffffffffffffff, 0xffffffff, 0xffffffff, 0x5090d0, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028, 0x509028) = 0
    ioctl(4, 0x40102e0d, 0x7fff31437560)    = 0
    ioprio_set(0x3e8, 0x65, 0x4004)         = -1 EINVAL (Invalid argument)
    write(2, "Warning: ioprio feature is not s"..., 76Warning: ioprio feature is not supported by kernel. skipped ioprio configure) = 76
    write(2, "\n", 1
    )                       = 1
    And uname -a

    Code:
    Linux ((HOSTNAME REMOVED)) 2.6.32.15-openvz-thh-64 #1 SMP Mon Aug 16 14:41:31 CEST 2010 x86_64 x86_64 x86_64 GNU/Linux

  5. #5
    Join Date
    Jun 2010
    Location
    Amsterdam, Netherlands
    Posts
    21
    You can try to install the latest kernel and vzctl.

    I/O prio is supported since kernel 2.6.18-028stable021.

  6. #6
    Quote Originally Posted by bitdot View Post
    You can try to install the latest kernel and vzctl.

    I/O prio is supported since kernel 2.6.18-028stable021.
    Well I'm running 2.6.32.15 so it should be in there already. I've got the latest version of vzctl as well.

  7. #7
    Join Date
    Jun 2010
    Location
    Amsterdam, Netherlands
    Posts
    21
    Strange

    What says: vzctl set [insert-vpsid]--ioprio 0 --save

  8. #8
    Code:
    [root@server ~]# vzctl set 101 --ioprio 0 --save
    Saved parameters for CT 101
    Code:
    [root@server ~]# vzctl start 101
    Starting container ...
    Container is mounted
    Adding IP address(es): REMOVED
    Setting CPU limit: 400
    Setting CPU units: 1000
    Setting CPUs: 4
    Warning: ioprio feature is not supported by kernel. skipped ioprio configure
    Container start failed
    Stopping container ...
    Container was stopped
    Container is unmounted

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