Xen devel - Oct 2005 - domU boot/mount errors

When i start my domU, often there are not all filesystems mounted, as defined in
/etc/fstab. In all cases the device nodes, like /dev/hda3, are missing. After
every reboot of my domU some other device nodes are gone and others are now
there, but never all of them. That''s really ugly.
 
# mount
/dev/hda1 on / type reiserfs (rw,acl,user_xattr)
proc on /proc type proc (rw)
/dev/hda13 on /usr type reiserfs (rw)
/dev/hda2 on /cdb type reiserfs (rw)
/dev/hda4 on /data/docarchive type reiserfs (rw)
/dev/hda5 on /home type reiserfs (rw)
/dev/hda7 on /data/mailserver type reiserfs (rw)
/dev/hda8 on /data/pos type reiserfs (rw)
/dev/hda9 on /data/pub type reiserfs (rw)
/dev/hda11 on /tmp type reiserfs (rw)
/dev/hda12 on /data/transfer type reiserfs (rw)
/dev/hda14 on /var type reiserfs (rw)
#
# mount /dev/hda10
mount: special device /dev/hda10 does not exist
#
# mount /dev/hda3
mount: special device /dev/hda3 does not exist
 
In the config file are all devices defined. Does anybody know a solution for
this problem?
 
Stephan
 


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> Stephan Böni wrote:
> > When i start my domU, often there are not all filesystems 
> mounted, as 
> > defined in /etc/fstab. In all cases the device nodes, like 
> > /dev/hda3, are missing. After every reboot of my domU some other 
> > device nodes are gone and others are now there, but never 
> all of them. 
> > That''s really ugly.
> >  
> > # mount
> > /dev/hda1 on / type reiserfs (rw,acl,user_xattr)
> > proc on /proc type proc (rw)
> > /dev/hda13 on /usr type reiserfs (rw)
> > /dev/hda2 on /cdb type reiserfs (rw)
> > /dev/hda4 on /data/docarchive type reiserfs (rw)
> > /dev/hda5 on /home type reiserfs (rw)
> > /dev/hda7 on /data/mailserver type reiserfs (rw)
> > /dev/hda8 on /data/pos type reiserfs (rw)
> > /dev/hda9 on /data/pub type reiserfs (rw)
> > /dev/hda11 on /tmp type reiserfs (rw)
> > /dev/hda12 on /data/transfer type reiserfs (rw)
> > /dev/hda14 on /var type reiserfs (rw)
> > #
> > # mount /dev/hda10
> > mount: special device /dev/hda10 does not exist
> > #
> > # mount /dev/hda3
> > mount: special device /dev/hda3 does not exist
> >  
> > In the config file are all devices defined. Does anybody know a 
> > solution for this problem?
>
> Are you using loop-Devices ?
> I don''t know if i''m right. But is there not a limit on
the count of
> loop-devices ?
> 
No, i don''t use loop devices. These are all lvm volumes. Here is my
config file:

------------------------------------------------
#  -*- mode: python; -*-
 
# configuration name:
name    = "inhouse"
 
# usable ram:
memory  = 2048
 
# kernel und initrd:
kernel  = "/boot/vmlinuz-xen"
ramdisk = "/boot/initrd-xen"
 
# network interface:
vif  = [ ''mac=FE:FF:FF:FF:FF:01, bridge=xenbr0'' ]
#dhcp = "dhcp"
hostname = name
 
# storage devices:
disk = [ ''phy:xenvg/inhouse-root,hda1,w'',
         ''phy:xenvg/inhouse-cdb,hda2,w'',
         ''phy:xenvg/inhouse-comserver,hda3,w'',
         ''phy:xenvg/inhouse-docarchive,hda4,w'',
         ''phy:xenvg/inhouse-home,hda5,w'',
         ''phy:xenvg/inhouse-journal,hda6,w'',
         ''phy:xenvg/inhouse-mailserver,hda7,w'',
         ''phy:xenvg/inhouse-pos,hda8,w'',
         ''phy:xenvg/inhouse-pub,hda9,w'',
         ''phy:xenvg/inhouse-srv,hda10,w'',
         ''phy:xenvg/inhouse-tmp,hda11,w'',
         ''phy:xenvg/inhouse-transfer,hda12,w'',
         ''phy:xenvg/inhouse-usr,hda13,w'',
         ''phy:xenvg/inhouse-var,hda14,w'',
         ''phy:xenvg/inhouse-swap,hdb1,w'',
         ''phy:xenvg/susedvd,hdc1,r'' ]
 
# boot device:
root    = "/dev/hda1"
 
# boot to run level:
extra   = "3"
------------------------------------------------

Stephan

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On Wed, Oct 19, 2005 at 11:00:05AM +0200, Stephan Böni wrote:
> > Stephan Böni wrote:
> > > When i start my domU, often there are not all filesystems 
> > mounted, as 
> > > defined in /etc/fstab. In all cases the device nodes, like 
> > > /dev/hda3, are missing. After every reboot of my domU some other 
> > > device nodes are gone and others are now there, but never 
> > all of them. 
> >
> > [Snip!]
To resurrect an ancient thread: I''ve put some changes over the last
week which
between them seem to have caught the last of the device creation races.  I
have just successfully created a domU with 17 LVM partitions available as
/dev/sda1 to /dev/sda17, and mounted all of them simultaneously inside the
guest.

You will see these changes once they have passed our internal tests, which
will probably be tomorrow.  Once they push through, I would be interested to
know whether you have success in trying the configuration you were trying last
month.

Cheers,

Ewan.

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