Re: [Xen-users] Convert CentOS system to Xen image?

[Tiago Cruz <tiagocruz@xxxxxxxxxxxx>]

Hello again guys,

This thread was very interesting for me, so, I've decided do some tests,
and I would like to share with the list (and hope to kill some
doubts...)

So, I have running on my desktop (Dell Optiplex 745) one Ubuntu Hardy,
on my sda2, so:

- dd+netcat to copy my device into my XenServer running RHEL5;
- create one new LVM file, and particione it (/ and swap);
- mount the image and copy the files to LVM device;
- adjust files like fstab and mtab (/ its now sda1, not more sda2)

and after, I've used the Igor's idea:

On Thu, 2008-04-03 at 02:00 +0300, Igor Chubin wrote:

> just try to run
> 
> qemu -hda centos.img
> 
> and say (or better show)

I never was think on this before, great idea! Before kill myself using
Xen, I've used the old and good qemu to fix my image (reinstall grub and
etc) :-D

After this, I've just put my working qemu's image inside Xen, like this:

name = "teste"
uuid = "da7371c1deaf8280213a0534b43da4ca"
maxmem = 500
memory = 300
vcpus = 1
builder = "hvm"
kernel = "/usr/lib/xen/boot/hvmloader"
boot = "c"
pae = 1
acpi = 1
apic = 1
on_poweroff = "destroy"
on_reboot = "restart"
on_crash = "restart"
device_model = "/usr/lib64/xen/bin/qemu-dm"
sdl = 0
vnc = 1
vncunused = 1
keymap = "en-us"
disk = [ "phy:/dev/Vol_LVM/teste,hda,w", 
"file:/iso/ubuntu-7.10-desktop-i386.iso,hdc:cdrom,r" ]
vif = [ "mac=00:16:3e:1f:86:70,bridge=virbr0,type=ioemu" ]
serial = "pty"


And it's working like a charm, but:

1-) Should I use hda or sda on xen config file? And on domU (grub,
fstab)... must be hda or sda?

2-) I'm getting a lot of errors like this on my dmesg/messages... what
can I do to fix this? 

Apr 11 17:04:46 tuxkiller kernel: [ 6847.639957] ata2: DRQ=1 with device error, 
dev_stat 0x49
Apr 11 17:04:46 tuxkiller kernel: [ 6847.640405]          res 
41/50:03:00:00:20/00:00:00:00:00/a0 Emask 0x3 (HSM violation)
Apr 11 17:04:46 tuxkiller kernel: [ 6847.641026] ata2: soft resetting port
Apr 11 17:04:46 tuxkiller kernel: [ 6848.106528] ata2.00: configured for MWDMA2
Apr 11 17:04:46 tuxkiller kernel: [ 6848.106540] ata2: EH complete

My boot dmesg show me this:

[    9.399068] eth0: RealTek RTL8139 at 0xd380e000, 00:16:3e:1f:86:70, IRQ 16
[    9.399542] eth0:  Identified 8139 chip type 'RTL-8139'
[    9.403628] 8139cp: 10/100 PCI Ethernet driver v1.3 (Mar 22, 2004)
[    9.427008] sd 0:0:0:0: [sda] 229015552 512-byte hardware sectors (117256 MB)
[    9.427604] sd 0:0:0:0: [sda] Write Protect is off
[    9.428137] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    9.428159] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, 
doesn't support DPO or FUA
[    9.430447] sd 0:0:0:0: [sda] 229015552 512-byte hardware sectors (117256 MB)
[    9.431032] sd 0:0:0:0: [sda] Write Protect is off
[    9.431445] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    9.431457] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, 
doesn't support DPO or FUA
[    9.434390]  sda: sda1
[    9.436832] sd 0:0:0:0: [sda] Attached SCSI disk
[    9.439554] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
[    9.440016] ata2.00: (BMDMA stat 0x5)
[    9.440392] ata2.00: cmd a0/01:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x5a 
data 128 in
[    9.440394]          res 48/00:02:00:00:00/00:00:00:00:00/a0 Emask 0x2 (HSM 
violation)
[    9.442395] ata2: soft resetting port
[    9.448559] sd 0:0:0:0: Attached scsi generic sg0 type 0
[    9.449085] sr 1:0:0:0: Attached scsi generic sg1 type 5
[    9.913637] ata2.00: configured for MWDMA2
[    9.914076] ata2: EH complete
[    9.914748] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
[    9.917331] ata2.00: (BMDMA stat 0x5)
[    9.917777] ata2.00: cmd a0/01:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x5a 
data 128 in
[    9.917778]          res 48/01:02:00:00:00/00:00:00:00:00/a0 Emask 0x2 (HSM 
violation)
[    9.919393] ata2: soft resetting port
[   10.388618] ata2.00: configured for MWDMA2
[   10.389032] ata2: EH complete
[   10.389605] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
[   10.390070] ata2.00: (BMDMA stat 0x5)
[   10.392294] ata2.00: cmd a0/01:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x5a 
data 128 in
[   10.392296]          res 48/01:02:00:00:00/00:00:00:00:00/a0 Emask 0x2 (HSM 
violation)
[   10.393724] ata2: soft resetting port
[   10.859690] ata2.00: configured for MWDMA2
[   10.860317] ata2: EH complete
[   10.861011] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
[   10.863270] ata2.00: (BMDMA stat 0x5)
[   10.863658] ata2.00: cmd a0/01:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x5a 
data 128 in
[   10.863660]          res 48/01:02:00:00:00/00:00:00:00:00/a0 Emask 0x2 (HSM 
violation)
[   10.866820] ata2: soft resetting port
[   11.334555] ata2.00: configured for MWDMA2
[   11.335059] ata2: EH complete
[   11.335515] sr0: scsi-1 drive
[   11.335969] Uniform CD-ROM driver Revision: 3.20
[   11.338453] sr 1:0:0:0: Attached scsi CD-ROM sr0
[   14.786436] kjournald starting.  Commit interval 5 seconds
[   14.787029] EXT3-fs: mounted filesystem with ordered data mode.
[   19.115422] udev: renamed network interface eth0 to eth1
[   21.326355] input: PC Speaker as /class/input/input2
[   21.420419] input: ImExPS/2 Generic Explorer Mouse as /class/input/input3
[   21.829974] lp: driver loaded but no devices found
[   22.256104] EXT3 FS on sda1, internal journal
[   23.581239] Adding 1023992k swap on /swap.  Priority:-1 extents:259 
across:1053904k
[   23.754162] AppArmor: Unable to register AppArmor
[   25.654011] No dock devices found.
[   27.890021] ata2: DRQ=1 with device error, dev_stat 0x49
[   27.891842] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
[   27.892709] ata2.00: (BMDMA stat 0x5)
[   27.893998] ata2.00: cmd a0/01:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x46 
data 32 in
[   27.894000]          res 41/50:03:00:00:00/00:00:00:00:00/a0 Emask 0x3 (HSM 
violation)
[   27.894906] ata2: soft resetting port
[   28.361448] ata2.00: configured for MWDMA2
[   28.361471] ata2: EH complete


# lspci 
00:00.0 Host bridge: Intel Corporation 440FX - 82441FX PMC [Natoma] (rev 02)
00:01.0 ISA bridge: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II]
00:01.1 IDE interface: Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II]
00:01.2 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 01)
00:02.0 VGA compatible controller: Cirrus Logic GD 5446
00:03.0 Class ff80: XenSource, Inc. Xen Platform Device (rev 01)
00:04.0 Ethernet controller: Realtek Semiconductor Co., Ltd. 
RTL-8139/8139C/8139C+ (rev 20)


Many thanks!

-- 
Tiago Cruz
http://everlinux.com
Linux User #282636



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