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[uml-user] Fw: Booting ubuntu 6.10 from a physical disk
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From: n s. <nsc...@ya...> - 2007-01-08 17:00:10
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Thank you for the info. I searched for your name and could not find a how =
to. =0A=0AFrom looking at howto's and the Book "User Mode Linux", I know th=
at I can use any block device to boot from. =0A=0AI have a clean Install of=
ubuntu 6.10 Edgy on /dev/sde1. I pulled the drive from a working system.=
=0A=0AI need to copy the ./lib/modules/ to /dev/sde1 before I boot under U=
ML.=0A=0AI need to create the ubd devices. =0A# cd /mnt/dev=0A# mknod --mod=
e=3D660 ubda b 98 0=0A# mknod --mode=3D660 ubda1 b 98 1=0A=0AI need to edit=
/etc/fstab=0Aproc /proc proc defaults 0 =
0=0A/dev/ubda1 / ext3 defaults,errors=3Dremount-=
ro 0 1=0A=0AI should be able to boot User mode LINUX, UML I should u=
se the following command line.=0A=0A./vmlinux-2.6.18.1-bb2 umid=3DUML con=
=3Dpts con0=3Dfd:0,fd:1 ubda=3D/dev/sde1 =0A=0AChecking that ptrace can cha=
nge system call numbers...OK=0AChecking syscall emulation patch for ptrace.=
..OK=0AChecking advanced syscall emulation patch for ptrace...OK=0AChecking=
for tmpfs mount on /dev/shm...OK=0AChecking PROT_EXEC mmap in /dev/shm/...=
OK=0AChecking for the skas3 patch in the host:=0A - /proc/mm...not found=
=0A - PTRACE_FAULTINFO...not found=0A - PTRACE_LDT...not found=0AUML runn=
ing in SKAS0 mode=0AChecking that ptrace can change system call numbers...O=
K=0AChecking syscall emulation patch for ptrace...OK=0AChecking advanced sy=
scall emulation patch for ptrace...OK=0ALinux version 2.6.18.1-bb2 (paolo@a=
mericanbeauty.home.lan) (gcc version 4.0.3 (Ubuntu 4.0.3-1ubuntu5)) #1 Sat =
Oct 21 03:42:42 CEST 2006=0ABuilt 1 zonelists. Total pages: 8192=0AKernel =
command line: con=3Dpts con0=3Dfd:0,fd:1 ubda=3D/dev/sde1 root=3D/dev/ubda=
=0APID hash table entries: 256 (order: 8, 1024 bytes)=0ADentry cache hash t=
able entries: 4096 (order: 2, 16384 bytes)=0AInode-cache hash table entries=
: 2048 (order: 1, 8192 bytes)=0AMemory: 28896k available=0AMount-cache hash=
table entries: 512=0AChecking for host processor cmov support...Yes=0AChec=
king for host processor xmm support...No=0AChecking that host ptys support =
output SIGIO...Yes=0AChecking that host ptys support SIGIO on close...No, e=
nabling workaround=0AUsing 2.6 host AIO=0ANET: Registered protocol family 1=
6=0ANET: Registered protocol family 2=0AIP route cache hash table entries: =
256 (order: -2, 1024 bytes)=0ATCP established hash table entries: 1024 (ord=
er: 0, 4096 bytes)=0ATCP bind hash table entries: 512 (order: -1, 2048 byte=
s)=0ATCP: Hash tables configured (established 1024 bind 512)=0ATCP reno reg=
istered=0AChecking host MADV_REMOVE support...OK=0Amconsole (version 2) ini=
tialized on /root/.uml/b/mconsole=0Aubd: Synchronous mode=0AHost TLS suppor=
t detected=0ADetected host type: i386=0AVFS: Disk quotas dquot_6.5.1=0ADquo=
t-cache hash table entries: 1024 (order 0, 4096 bytes)=0AInitializing Crypt=
ographic API=0Aio scheduler noop registered=0Aio scheduler anticipatory reg=
istered (default)=0Aio scheduler deadline registered=0Aio scheduler cfq reg=
istered=0Aloop: loaded (max 8 devices)=0ATCP bic registered=0ANET: Register=
ed protocol family 1=0ANET: Registered protocol family 17=0AInitialized std=
io console driver=0AConsole initialized on /dev/tty0=0AInitializing softwar=
e serial port version 1=0A ubda: unknown partition table=0AVFS: Mounted roo=
t (ext2 filesystem) readonly.=0AWarning: unable to open an initial console.=
=0A=0AAm I missing something?=0A=0ANicholas A. Schembri=0AState College PA =
USA=0A=0A=0A----- Forwarded Message ----=0AFrom: Jonas Meyer <jmeyer@Alum.D=
artmouth.ORG>=0ATo: n schembr <nsc...@ya...>=0ACc: user-mode-linux-us=
er...@li...=0ASent: Friday, January 5, 2007 5:45:16 PM=0ASubje=
ct: Re: [uml-user] Booting ubuntu 6.10 from a physical disk=0A=0AI have 2 s=
ystems running Ubuntu edgy eft with UML. It is important that=0Ayou use th=
e right version of guest kernel. I also downloaded mine from=0Abb's site. =
I am using "kernel32-2.6.18-bb1". It was the most recent=0Aversion I coul=
d find as of a month or so ago that would work with my=0Aconfig. Most kern=
els posted there would not boot with a vanilla edgy=0Ahost. Try using that=
version. Also, it looks like you are telling the=0Aguest that /dev/sde1 c=
orresponds to /dev/ubd0 on the command line, but=0Athat in your fstab, you =
are trying to mount /dev/ubda1. I would suggest=0Ausing /dev/ubda in both =
locations. You will need to make sure the=0Apermissions and ownership are =
correct on your root image or /dev/sde1=0Adepending on how you do it (and I=
would suggest the root image method,=0Aas that is the way I know works).=
=0A=0AA month or two ago I posted a howto on this list that you should find=
=0Ahelpful. Look through the archives.=0A=0AJonas=0A=0An schembr wrote:=0A=
> I'm trying to consolidate hardware and uml looks like a better solution t=
hen qemu. Is this true? (Flame shell up)=0A> =0A> But, the bigger issue i=
s related to real images of systems not booting on user mode linux.=0A> =0A=
> I have install a base system from ubuntu 6.10, ubuntu-6.10-server-i386.is=
o.=0A> =0A> The image is 1GB is size and is located on /dev/sde1=0A> =0A> q=
emu -hda /dev/sde1 boots. =0A> real hardware boots.=0A> User mode linux hal=
ts.=0A> =0A> host# sudu su=0A> ./vmlinux-2.6.16-bb1 \=0A> umid=3Db =
\=0A> con=3Dpts con0=3Dfd:0,fd:1\=0A> ubd0=3D/dev/sde1 \=0A=
> =0A> =0A> UML# /etc/fstab=0A> proc /proc pro=
c defaults 0 0=0A> # /dev/sda=0A> /dev/ubda / =
ext3 defaults,errors=3Dremount-ro 0 1=0A> #/dev/ubda1 =
/ ext3 defaults,errors=3Dremount-ro 0 1=0A> #/dev=
/ubda / ext3 defaults 0 1=0A> #/dev/ubda1 =
/ ext3 defaults 0 1=0A> =0A> Checking that ptrace=
can change system call numbers...OK=0A> Checking syscall emulation patch f=
or ptrace...OK=0A> Checking advanced syscall emulation patch for ptrace...O=
K=0A> Checking for tmpfs mount on /dev/shm...OK=0A> Checking PROT_EXEC mmap=
in /dev/shm/...OK=0A> Checking for the skas3 patch in the host:=0A> - /p=
roc/mm...not found=0A> - PTRACE_FAULTINFO...not found=0A> - PTRACE_LDT.=
..not found=0A> UML running in SKAS0 mode=0A> Checking that ptrace can chan=
ge system call numbers...OK=0A> Checking syscall emulation patch for ptrace=
...OK=0A> Checking advanced syscall emulation patch for ptrace...OK=0A> Lin=
ux version 2.6.18.1-bb2 (pa...@am...n) (gcc version 4.0.3 =
(Ubuntu 4.0.3-1ubuntu5)) #1 Sat Oct 21 03:42:42 CEST 2006=0A> Built 1 zonel=
ists. Total pages: 8192=0A> Kernel command line: con=3Dpts con0=3Dfd:0,fd:=
1 ubd0=3D/dev/sde1 root=3D98:0=0A> PID hash table entries: 256 (order: 8, 1=
024 bytes)=0A> Dentry cache hash table entries: 4096 (order: 2, 16384 bytes=
)=0A> Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)=0A> Memor=
y: 28896k available=0A> Mount-cache hash table entries: 512=0A> Checking fo=
r host processor cmov support...Yes=0A> Checking for host processor xmm sup=
port...No=0A> Checking that host ptys support output SIGIO...Yes=0A> Checki=
ng that host ptys support SIGIO on close...No, enabling workaround=0A> Usin=
g 2.6 host AIO=0A> NET: Registered protocol family 16=0A> NET: Registered p=
rotocol family 2=0A> IP route cache hash table entries: 256 (order: -2, 102=
4 bytes)=0A> TCP established hash table entries: 1024 (order: 0, 4096 bytes=
)=0A> TCP bind hash table entries: 512 (order: -1, 2048 bytes)=0A> TCP: Has=
h tables configured (established 1024 bind 512)=0A> TCP reno registered=0A>=
Checking host MADV_REMOVE support...OK=0A> mconsole (version 2) initialize=
d on /root/.uml/b/mconsole=0A> ubd: Synchronous mode=0A> Host TLS support d=
etected=0A> Detected host type: i386=0A> VFS: Disk quotas dquot_6.5.1=0A> D=
quot-cache hash table entries: 1024 (order 0, 4096 bytes)=0A> Initializing =
Cryptographic API=0A> io scheduler noop registered=0A> io scheduler anticip=
atory registered (default)=0A> io scheduler deadline registered=0A> io sche=
duler cfq registered=0A> loop: loaded (max 8 devices)=0A> TCP bic registere=
d=0A> NET: Registered protocol family 1=0A> NET: Registered protocol family=
17=0A> Initialized stdio console driver=0A> Console initialized on /dev/tt=
y0=0A> Initializing software serial port version 1=0A> ubda: unknown parti=
tion table=0A> VFS: Mounted root (ext2 filesystem) readonly.=0A> Warning: u=
nable to open an initial console.=0A> =0A> I have copied the disk to an ima=
ge file and had the same output. =0A> =0A> host# sudo su=0A> mount /dev/sde=
1 ./mnt=0A> mount -o loop b.img ./img=0A> cd img=0A> rsync -aH ../mnt/ ./=
=0A> cd ..=0A> cp -r ./lib/* ./img/lib/=0A> =0A> =0A> =0A> =0A> I have also=
replaces the tried each of the following:=0A> vmlinux-2.6.16.9-bs2=0A> v=
mlinux-2.6.16-bb1=0A> vmlinux-2.6.18.1-bb2=0A> =0A> =0A> I have been able =
to boot images I've created with debootstrap from the ubuntu repositories b=
ut I need to be able to migrate to and from live systems. =0A> =0A> I've tr=
ied everything I could find. Can anyone point out the error.=0A> =0A> =0A=
> =0A> Thank you for your time. =0A> =0A> =0A> Nicholas A. Schembri=0A> Sta=
te College PA USA=0A> =0A> =0A> =0A> =0A> ---------------------------------=
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