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Thread: after upgrade, slow (~3 min) boot of Xen 13.1 DomU on 13.1 Dom0

  1. #1

    Default after upgrade, slow (~3 min) boot of Xen 13.1 DomU on 13.1 Dom0

    On a Opensuse 13.1 server booting as a Xen 4.3.0 Dom0 host (kernel-xen-3.11.6-4.1.x86_64, xen-4.3.0_14-281.1.x86_64), I'm launching a Xen PV Guest, also running Opensuse 13.1.

    The DomU boots, and functions OK. But, currently, the startup process takes ~ 3mins. Prior to upgrade of this Host & Guest from 12.3 -> 13.1, the Guest took ~ 20-30 secs to boot.

    It's stalling/waiting at several points.

    'blame' is placed on a couple of suspects:

    Code:
    systemd-analyze blame
          1min 222ms kmod-static-nodes.service
          1min 152ms dev-mqueue.mount
          1min 142ms systemd-udev-root-symlink.service
          1min 141ms systemd-vconsole-setup.service
          1min 140ms systemd-modules-load.service
              3.715s network.service
              2.242s quotad.service
              2.223s autofs.service
              2.201s network@eth0.service
              1.068s nfs.service
               625ms nfsserver.service
               489ms systemd-udev-settle.service
               319ms rsyslog.service
               312ms rpcbind.service
               285ms systemd-logind.service
               234ms lvm2-activation-early.service
               213ms systemd-tmpfiles-clean.service
               174ms systemd-fsck@dev-xvda1.service
               107ms lvm2-activation.service
               104ms sshd-custom.service
                80ms systemd-tmpfiles-setup-dev.service
                71ms boot.mount
                66ms systemd-sysctl.service
                65ms systemd-remount-fs.service
                58ms user@0.service
                56ms systemd-random-seed.service
                47ms systemd-udevd.service
                44ms systemd-readahead-done.service
                41ms systemd-user-sessions.service
                38ms systemd-udev-trigger.service
                38ms sys-kernel-debug.mount
                35ms systemd-update-utmp.service
                32ms systemd-tmpfiles-setup.service
                32ms systemd-journal-flush.service
                27ms systemd-update-utmp-runlevel.service
                26ms var-run.mount
                22ms dev-xvdb1.swap
                12ms rc-local.service
                12ms var-lock.mount
                 5ms sys-fs-fuse-connections.mount
    looking at the journalctl output

    Code:
    journalctl -xb
    on the guest: http://pastebin.com/YGjAMnaP

    I'm not clear yet on why those delays are occurring, and/or if there's yet a different culprit than those 'blamed' above.

    Hoping to troubleshoot b4 filing a bug, another set of eyes would be appreaciated.

    From the logs, do any likely/probable candidates stand out?

  2. #2
    Join Date
    Nov 2009
    Location
    West Virginia Sector 13
    Posts
    16,288

    Default Re: after upgrade, slow (~3 min) boot of Xen 13.1 DomU on 13.1 Dom0

    Does the machine have a floppy. If NOT then be sure the BIOS is set to no floppy. If the BIOS thinks there is a floppy and thee is none the system trys to mount it and waits untill the process times out.

  3. #3

    Default Re: after upgrade, slow (~3 min) boot of Xen 13.1 DomU on 13.1 Dom0

    It's a Xen guest.

    There's no virtualized fd device defined.

  4. #4

    Default Re: after upgrade, slow (~3 min) boot of Xen 13.1 DomU on 13.1 Dom0


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