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* iSCSI problems
@ 2005-10-31 11:12 Edwards, Nigel (Nigel Edwards)
  2005-10-31 13:52 ` Alvin Starr
  2005-10-31 14:57 ` Brian Wolfe
  0 siblings, 2 replies; 3+ messages in thread
From: Edwards, Nigel (Nigel Edwards) @ 2005-10-31 11:12 UTC (permalink / raw)
  To: xen-devel

[-- Attachment #1: Type: text/plain, Size: 4335 bytes --]

Hi,
I am having problems getting iSCSI working with xen. I can access
iSCSI drives fine from Xen0 (e.g. untar a 500MB archive and I don't
see problems reported through dmesg or /proc/kmsg). However, if I try
to project them into an instance of XenU as a scsi device to boot the
unprivileged domain I get an oops in Xen0 - often resulting in the
whole machine crashing.  This occurs in the very early stages of boot
of xenU.

I am using linux-iscsi-4.0.2 for iscsi_sfnet.ko
scsi_transport_iscsi.ko is being built in linux-2.6.12-xen0
I downloaded xen-unstable-src.tgz October 25th.

I notice that there appear to be some significant differences between
scsi_transport_iscsi.c in linux-iscsi-4.0.2 and the version in 
linux-2.6.12 kernel.

Example oops below. I have also attached the domain config file. I am
not sure what to do next to get this working.  Any suggestions would
be appreciated. If you have iSCSI working, if you could drop me a note
indicating what code and modules you are using I would be very grateful.

Cheers,
Nigel.


<1>Unable to handle kernel paging request at virtual address f3d55000
<1> printing eip:
<4>c0147bec
<1>*pde = ma 030cb067 pa 000cb067
<1>*pte = ma 00000000 pa 55555000
<1>Oops: 0002 [#1]
<4>PREEMPT
<4>Modules linked in: crc32c md5 iscsi_sfnet scsi_transport_iscsi
sworks_agp agpgart
<4>CPU:    0
<4>EIP:    0061:[<c0147bec>]    Not tainted VLI
<4>EFLAGS: 00010292   (2.6.12.6-xen0)
<4>EIP is at buffered_rmqueue+0x19c/0x340
<4>eax: 00000000   ebx: 00000001   ecx: 00000400   edx: f3d55000
<4>esi: c167aaa0   edi: f3d55000   ebp: 00000000   esp: ecb41dd4
<4>ds: 007b   es: 007b   ss: 0069
<4>Process ifup (pid: 30665, threadinfo=ecb40000 task=f2180040)
<4>Stack: c167aaa0 00000003 00000000 eeda60c0 c0147660 c167aaa0 c050c5c0
00000000
<4>       00000000 000084d0 c0147f2f c050c5c0 00000000 00000010 00000000
00000000
<4>       00000000 00000000 00000000 f2180040 00000010 c050c92c 00000000
c011cbd3
<4>Call Trace:
<4> [<c0147660>] prep_new_page+0x50/0x60
<4> [<c0147f2f>] __alloc_pages+0xcf/0x430
<4> [<c011cbd3>] mm_init+0xa3/0xe0
<4> [<c0116c71>] pte_alloc_one+0x11/0x30
<4> [<c0153ab2>] pte_alloc_map+0x42/0x200
<4> [<c0153d9f>] copy_pte_range+0x2f/0x330
<4> [<c0154137>] copy_page_range+0x97/0xd0
<4> [<c011d0e5>] copy_mm+0x285/0x3d0
<4> [<c05aece0>] BusLogic_ProbeHostAdapter+0xe0/0x170
<4> [<c011db77>] copy_process+0x407/0xe10
<4> [<c011e685>] do_fork+0x75/0x19f
<4> [<c012dbc5>] sys_rt_sigprocmask+0x95/0x140
<4> [<c0107ae1>] sys_fork+0x31/0x40
<4> [<c0109365>] syscall_call+0x7/0xb
<4>Code: 8b 74 24 14 31 ed 89 f6 8d bc 27 00 00 00 00 89 34 24 bf 03 00
00 00 89 7c 24 04 e8 6f 1d fd ff 89 c2 89 c7 b9
00 04 00 00 89 e8 <f3> ab 89 14 24 b9 03 00 00 00 83 c6 20 89 4c 24 04
e8 ae 1d fd
<4> <6>note: ifup[30665] exited with preempt_count 2
<3>scheduling while atomic: ifup/0x00000002/30665
<4> [<c046fa61>] schedule+0x681/0x760
<4> [<c011fcc1>] release_console_sem+0x71/0x190
<4> [<c011fa4f>] vprintk+0x1df/0x330
<4> [<c0470d66>] rwsem_down_read_failed+0xc6/0x1e0
<4> [<c0123860>] .text.lock.exit+0x27/0x87
<4> [<c0122087>] do_exit+0xa7/0x410
<4> [<c0109d65>] die+0x1c5/0x1d0
<4> [<c0117fe4>] do_page_fault+0x3e4/0x65b
<4> [<c011b40a>] __wake_up+0x4a/0xb0
<4> [<c01e8461>] journal_stop+0x171/0x2f0
<4> [<c01da350>] ext3_mark_inode_dirty+0x50/0x60
<4> [<c01ded34>] __ext3_journal_stop+0x24/0x50
<4> [<c014ae56>] __do_page_cache_readahead+0xa6/0x270
<4> [<c01da3d1>] ext3_dirty_inode+0x71/0x90
<4> [<c01da360>] ext3_dirty_inode+0x0/0x90
<4> [<c018eb36>] __mark_inode_dirty+0x116/0x1e0
<4> [<c0124e21>] current_fs_time+0x51/0x70
<4> [<c01096ee>] page_fault+0x2e/0x34
<4> [<c0147bec>] buffered_rmqueue+0x19c/0x340
<4> [<c0147660>] prep_new_page+0x50/0x60
<4> [<c0147f2f>] __alloc_pages+0xcf/0x430
<4> [<c011cbd3>] mm_init+0xa3/0xe0
<4> [<c0116c71>] pte_alloc_one+0x11/0x30
<4> [<c0153ab2>] pte_alloc_map+0x42/0x200
<4> [<c0153d9f>] copy_pte_range+0x2f/0x330
<4> [<c0154137>] copy_page_range+0x97/0xd0
<4> [<c011d0e5>] copy_mm+0x285/0x3d0
<4> [<c05aece0>] BusLogic_ProbeHostAdapter+0xe0/0x170
<4> [<c011db77>] copy_process+0x407/0xe10
<4> [<c011e685>] do_fork+0x75/0x19f
<4> [<c012dbc5>] sys_rt_sigprocmask+0x95/0x140
<4> [<c0107ae1>] sys_fork+0x31/0x40
<4> [<c0109365>] syscall_call+0x7/0xb

[-- Attachment #2: iSCSI-Disk1 --]
[-- Type: application/octet-stream, Size: 4874 bytes --]

#  -*- mode: python; -*-
#============================================================================
# Python configuration setup for 'xm create'.
# This script sets the parameters used when a domain is created using 'xm create'.
# You use a separate script for each domain you want to create, or 
# you can set the parameters for the domain on the xm command line.
#============================================================================

#----------------------------------------------------------------------------
# Kernel image file.
kernel = "/boot/vmlinuz-2.6.12.6-xenU"

# Optional ramdisk.
#ramdisk = "/boot/initrd.gz"

# The domain build function. Default is 'linux'.
#builder='linux'

# Initial memory allocation (in megabytes) for the new domain.
memory = 64

# A name for your domain. All domains must have different names.
name = "Real-Disk-1"

# Which CPU to start domain on? 
#cpu = -1   # leave to Xen to pick

# Number of Virtual CPUS to use, default is 1
#vcpus = 1

#----------------------------------------------------------------------------
# Define network interfaces.

# Number of network interfaces. Default is 1.
#nics=1

# Optionally define mac and/or bridge for the network interfaces.
# Random MACs are assigned if not given.
#vif = [ 'mac=aa:00:00:00:00:11, bridge=xenbr0' ]
vif = [ 'mac=aa:00:00:00:01:04, bridge=xenbr0' ]

#----------------------------------------------------------------------------
# Define the disk devices you want the domain to have access to, and
# what you want them accessible as.
# Each disk entry is of the form phy:UNAME,DEV,MODE
# where UNAME is the device, DEV is the device name the domain will see,
# and MODE is r for read-only, w for read-write.

#disk = [ 'phy:hda1,hda1,w' ]
disk = [ 'phy:sdb1,sda1,w' ]

#----------------------------------------------------------------------------
# Define to which TPM instance the user domain should communicate.
# The vtpm entry is of the form 'instance=INSTANCE,backend=DOM'
# where INSTANCE indicates the instance number of the TPM the VM
# should be talking to and DOM provides the domain where the backend
# is located.
# Note that no two virtual machines should try to connect to the same
# TPM instance. The handling of all TPM instances does require
# some management effort in so far that VM configration files (and thus
# a VM) should be associated with a TPM instance throughout the lifetime
# of the VM / VM configuration file. The instance number must be
# greater or equal to 1.
#vtpm = [ 'instance=1,backend=0' ]

#----------------------------------------------------------------------------
# Set the kernel command line for the new domain.
# You only need to define the IP parameters and hostname if the domain's
# IP config doesn't, e.g. in ifcfg-eth0 or via DHCP.
# You can use 'extra' to set the runlevel and custom environment
# variables used by custom rc scripts (e.g. VMID=, usr= ).

# Set if you want dhcp to allocate the IP address.
dhcp="dhcp"
# Set netmask.
#netmask=
# Set default gateway.
#gateway=
# Set the hostname.
#hostname= "vm%d" % vmid

# Set root device.
root = "/dev/sda1 ro"

# Root device for nfs.
#root = "/dev/nfs"
# The nfs server.
#nfs_server = '169.254.1.0'  
# Root directory on the nfs server.
#nfs_root   = '/full/path/to/root/directory'

# Sets runlevel 4.
extra = "5"

#----------------------------------------------------------------------------
# Configure the behaviour when a domain exits.  There are three 'reasons'
# for a domain to stop: poweroff, reboot, and crash.  For each of these you
# may specify:
#
#   "destroy",        meaning that the domain is cleaned up as normal;
#   "restart",        meaning that a new domain is started in place of the old
#                     one;
#   "preserve",       meaning that no clean-up is done until the domain is
#                     manually destroyed (using xm destroy, for example); or
#   "rename-restart", meaning that the old domain is not cleaned up, but is
#                     renamed and a new domain started in its place.
#
# The default is
#
#   on_poweroff = 'destroy'
#   on_reboot   = 'restart'
#   on_crash    = 'restart'
#
# For backwards compatibility we also support the deprecated option restart
#
# restart = 'onreboot' means on_poweroff = 'destroy'
#                            on_reboot   = 'restart'
#                            on_crash    = 'destroy'
#
# restart = 'always'   means on_poweroff = 'restart'
#                            on_reboot   = 'restart'
#                            on_crash    = 'restart'
#
# restart = 'never'    means on_poweroff = 'destroy'
#                            on_reboot   = 'destroy'
#                            on_crash    = 'destroy'

#on_poweroff = 'destroy'
#on_reboot   = 'restart'
#on_crash    = 'restart'

#============================================================================

[-- Attachment #3: Type: text/plain, Size: 138 bytes --]

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Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
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2005-10-31 11:12 iSCSI problems Edwards, Nigel (Nigel Edwards)
2005-10-31 13:52 ` Alvin Starr
2005-10-31 14:57 ` Brian Wolfe

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