Re: [Xen-users] ntpd under Xen Dom0 exhibits extremely high jitter/noise? runs stable/quiet under non-xen kernel.

[mail ignored <0.bugs.only.0@xxxxxxxxx>]

hi,

On Fri, Jan 15, 2010 at 2:34 PM, Fajar A. Nugraha <fajar@xxxxxxxxx> wrote:
> Last time I check it only recognize ext4dev. I'll try this next week.

in addition to the reference above, this,

  https://bugzilla.redhat.com/show_bug.cgi?id=485315#c13

suggests it does.  thanks.

> What does your partition setup looks like?

sda, 1TB
sdb, 1TB

/dev/md0 = 150 MB, ext3, RAID-1 (/dev/sda1 + /dev/sdb1)
/dev/md1 = *, raw LVM, RAID-1 (/dev/sda2 + /dev/sdb2)
    LVMs,
        /dev/VG0/ROOT  50GB, ext4
        /dev/VG0/SWAP  2 GB, swap
        /dev/VG0/HOME  *, ext4

> Is it the default opensuse layout, or did you customize it?

It's certainly not the default.  But it is fully supported by
opensuse, and readily configurable in its Partitioner

> last time I check grub can't support  /boot on raid-1.

 Works just fine on OpenSuse.  Using Centos kernel, the hypervisor &
kernel both seem to found/recognized just fine ...

cref e.g.,

http://www.linuxfoundation.org/collaborate/workgroups/linux-raid/preventing_against_a_failing_disk#Prepare_for_boot
" ... On Intel-compatibe hardware, there are two common boot loaders,
grub and lilo.
Both grub and lilo can only boot off a raid1. They cannot boot off
any other software raid device type ... "

> Also, does the Centos kernel recognize the disks
> succesfully (i.e. did you see messages about sda/sdb during boot)?

yes, both are there.  it's the VG that's it's complaining is not being found.

although the messages scroll by too quickly (i'll find a serial cable
around here ...), i do see something about "udevadm ... Connection
Refused ...".

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