RE: [Xen-devel] booting 2.6 - can't mount root

that was it. it seems to work fine now (except that I forgot to copy the modules in - how does everyone else update the modules in the xenU domains when they update the kernel?
James
From: Keir Fraser
Sent: Sat 14/08/2004 6:35 PM
To: James Harper
Cc: xen-devel@xxxxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] booting 2.6 - can't mount root
Make sure you have an up-to-date repository -- I broke the
unprivileged blkdev driver a day or two ago!

 -- Keir

> I have just attempted to boot domU with 2.6.7 (dom0 still 2.4.26), and I get this:
> 
> <snip>
> Initializing Cryptographic API
> Initialising Xen virtual block device
> Using anticipatory io scheduler
> Xen virtual console successfully installed as tty
> Event-channel device installed.
> Initialising Xen virtual ethernet frontend driver<6>NET: Registered protocol family 2
> IP: routing cache hash table of 1024 buckets, 8Kbytes
> TCP: Hash tables configured (established 8192 bind 16384)
> NET: Registered protocol family 1
> NET: Registered protocol family 17
> Bridge firewalling registered
> <~5 second pause>
> end_request: I/O error, dev sda1, sector 2
> EXT3-fs: unable to read superblock
> end_request: I/O error, dev sda1, sector 2
> EXT2-fs: unable to read superblock
> Kernel panic: VFS: Unable to mount root fs on sda1
> 
> the only change to my config is to substitute the 2.4.26 kernel with the 2.6.7 kernel. My disk line is:
> 
> disk = [ 'phy:vg00/sbssgw1,sda1,w' ]
> 
> also tried:
> 
> disk = [ 'phy:/dev/vg00/sbssgw1,/dev/sda1,w' ]
> 
> the code is checked out as of yesterday, EST.
> 
> any ideas what i've broken?
> 
> also, on boot I get bogomips readings from 900 to 100. Is there any problem with this?
> 
> thanks
> 
> James
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I have just attempted to boot domU with 2.6.7 (dom0 still 2.4.26), and I ge=
t this:

<snip>
Initializing Cryptographic API
Initialising Xen virtual block device
Using anticipatory io scheduler
Xen virtual console successfully installed as tty
Event-channel device installed.
Initialising Xen virtual ethernet frontend driver<6>NET: Registered protoco=
l family 2
IP: routing cache hash table of 1024 buckets, 8Kbytes
TCP: Hash tables configured (established 8192 bind 16384)
NET: Registered protocol family 1
NET: Registered protocol family 17
Bridge firewalling registered
<~5 second pause>
end_request: I/O error, dev sda1, sector 2
EXT3-fs: unable to read superblock
end_request: I/O error, dev sda1, sector 2
EXT2-fs: unable to read superblock
Kernel panic: VFS: Unable to mount root fs on sda1

the only change to my config is to substitute the 2.4.26 kernel with the 2.=
6.7 kernel. My disk line is:

disk =3D [ 'phy:vg00/sbssgw1,sda1,w' ]

also tried:

disk =3D [ 'phy:/dev/vg00/sbssgw1,/dev/sda1,w' ]

the code is checked out as of yesterday, EST.

any ideas what i've broken?

also, on boot I get bogomips readings from 900 to 100. Is there any problem=
 with this?

thanks

James

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<HTML dir=3Dltr><HEAD></HEAD>
<BODY>
<DIV><FONT face=3DArial color=3D#000000 size=3D2>I have just attempted to b=
oot domU with 2.6.7 (dom0 still 2.4.26), and I get this:</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>&lt;snip&gt;</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Initializing Cryptographic API<BR>Initiali=
sing Xen virtual block device<BR>Using anticipatory io scheduler<BR>Xen vir=
tual console successfully installed as tty<BR>Event-channel device installe=
d.<BR>Initialising Xen virtual ethernet frontend driver&lt;6&gt;NET: Regist=
ered protocol family 2<BR>IP: routing cache hash table of 1024 buckets, 8Kb=
ytes<BR>TCP: Hash tables configured (established 8192 bind 16384)<BR>NET: R=
egistered protocol family 1<BR>NET: Registered protocol family 17<BR>Bridge=
 firewalling registered</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&lt;~5 second pause&gt;<BR>end_request: I/=
O error, dev sda1, sector 2<BR>EXT3-fs: unable to read superblock<BR>end_re=
quest: I/O error, dev sda1, sector 2<BR>EXT2-fs: unable to read superblock<=
BR>Kernel panic: VFS: Unable to mount root fs on sda1<BR></DIV></FONT>
<DIV><FONT face=3DArial size=3D2>the only change to my config is to substit=
ute the 2.4.26 kernel with the 2.6.7 kernel. My disk line is:</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>disk =3D [ 'phy:vg00/sbssgw1,sda1,w' ]<BR>=
</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>also tried:</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&nbsp;</DIV></FONT>
<DIV><FONT face=3DArial size=3D2><FONT face=3DArial size=3D2>disk =3D [ 'ph=
y:/dev/vg00/sbssgw1,/dev/sda1,w' ]</FONT><BR></FONT></DIV>
<DIV><FONT face=3DArial size=3D2>the code is checked out as of yesterday, E=
ST.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&nbsp;</DIV></FONT>
<DIV><FONT face=3DArial size=3D2>any ideas what i've broken?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>also, on boot I get bogomips readings from=
 900 to 100. Is there any problem with this?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>thanks</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>James</FONT></DIV></BODY></HTML>

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RE: [Xen-devel] booting 2.6 - can't mount root
