[Paul == i_p_a_u_l@xxxxxxxxx on Tue, 08 Feb 2005 01:09:57 +0200]
Paul> I tried with XenCD 1.0 rc1 in both vmware environments, and it
Paul> did not work, but I suspect there is something else fishy,
Paul> because "xm save" did not work either.
Thanks for the report. I can duplicate the problem that xm save does
not work on XenCD. Currently, I'm treating this as a release blocker
for 1.0final.
I'm unable at determine a fix for the problem and am soliciting help
from anyone who thinks they could contribute.
After a fresh boot of XenCD 1.0rc01, if I do:
xm save 1 /tmp/ttylinux1.save
I get:
Error: Error: [Failure instance: Traceback: \
xen.xend.XendError.XendError, save failed
The /var/log/xend-debug.log in enclosed below. I see:
/dev/loop: Is a directory
ioctl: LOOP_SET_FD: Device or resource busy
ioctl: LOOP_SET_FD: Device or resource busy
Relevant to that, I'm using udev with a plain Debian sarge install.
/dev/loop does indeed exist as a directory. My other udev box,
Gentoo, also has a /dev/loop directory, with 8 block devices inside.
XenCD has on 1 block device. My Debian woody devfs box has no
/dev/loop directory entry.
dom0 is booted with max_loop=64.
Oddly, there are possible loop leaks in my startup as there are
processes and lsof entries for loop0, loop1, loop2, loop3, loop10, and
loop11, which seems like a few too many. Only ttylinux-1 and 2's
loopback rootfs should be using up loops, I think.
Possibilities:
Do I need to patch sarge's udev to create a /dev/loop device?
Should I be digging into xend code to see how it uses /dev/loop? I'm
still wrapping my head around xend and I can't find "loop" in a grep
of the tree.
Is there something about tmpfs that makes xm save work for others but
not XenCD? XenCD's Xen installation is as absolutely vanilla as I can
make it, other than tmpfs. And ttylinux is running on a loopback
ext2.
Apologies if I'm missing something obvious.
-- begin /var/log/xend-debug.log --
network start bridge=xen-br0 netdev=eth0 antispoof=no
VIRTUAL MEMORY ARRANGEMENT:
Loaded kernel: c0100000->c034f6c4
Init. ramdisk: c0350000->c0350000
Phys-Mach map: c0350000->c0358000
Page tables: c0358000->c035a000
Start info: c035a000->c035b000
Boot stack: c035b000->c035c000
TOTAL: c0000000->c0400000
ENTRY ADDRESS: c0100000
VCPUS: 1
/dev/loop: Is a directory
ioctl: LOOP_SET_FD: Device or resource busy
ioctl: LOOP_SET_FD: Device or resource busy
vif-bridge up vif=vif1.0 domain=ttylinux-1 mac=aa:00:00:69:13:b5 bridge=xen-br0
recv_fe_driver_status> {'status': 1}
recv_fe_driver_status>
recv_fe_interface_connect {'tx_shmem_frame': 23907, 'rx_shmem_frame': 23906,
'handle': 0}
VIRTUAL MEMORY ARRANGEMENT:
Loaded kernel: c0100000->c034f6c4
Init. ramdisk: c0350000->c0350000
Phys-Mach map: c0350000->c0358000
Page tables: c0358000->c035a000
Start info: c035a000->c035b000
Boot stack: c035b000->c035c000
TOTAL: c0000000->c0400000
ENTRY ADDRESS: c0100000
VCPUS: 1
/dev/loop: Is a directory
ioctl: LOOP_SET_FD: Device or resource busy
ioctl: LOOP_SET_FD: Device or resource busy
ioctl: LOOP_SET_FD: Device or resource busy
vif-bridge up vif=vif2.0 domain=ttylinux-2 mac=aa:00:00:56:44:c6 bridge=xen-br0
recv_fe_driver_status> {'status': 1}
recv_fe_driver_status>
recv_fe_interface_connect {'tx_shmem_frame': 5204, 'rx_shmem_frame': 5203,
'handle': 0}
sync_session> <type 'str'> 1 ['save', ['id', '1'], ['state', 'begin'],
['domain', '1'], ['file', '/tmp/ttylinux1.save']]
Started to connect self= <xen.xend.XendMigrate.XfrdClientFactory instance at
0xb78fbdec> connector= <twisted.internet.tcp.Connector instance at 0xb78fbe0c>
buildProtocol> IPv4Address(TCP, 'localhost', 8002)
***request> (domain (id 1) (name ttylinux-1) (memory 31) (maxmem 32768) (state
-b---) (cpu 0) (cpu_time 81.206402435) (up_time 59103.1672821) (start_time
1107920300.57) (console (status listening) (id 12) (domain 1) (local_port 12)
(remote_port 1) (console_port 9601)) (devices (vif (idx 0) (vif 0) (mac
aa:00:00:69:13:b5) (evtchn 14 4) (index 0)) (vbd (idx 0) (vdev 2049) (device
1802) (mode w) (dev sda1) (uname file:/tmp/xen-rootfs.ttylinux-1) (node
/dev/loop10) (index 0))) (config (vm (name ttylinux-1) (memory 32) (cpu -1)
(restart always) (image (linux (kernel /media/cdrom/boot/xenU-kernel) (root
'/dev/sda1 ro') (vcpus 1))) (device (vbd (uname
file:/tmp/xen-rootfs.ttylinux-1) (dev sda1) (mode w))) (device (vif (mac
aa:00:00:69:13:b5))) (memmap) (device_model) (device_config))))
***request> begin
xfr_err> ['xfr.err', '0']
xfr_err> <type 'str'> 0
Xfrd>connectionLost> [Failure instance: Traceback:
twisted.internet.error.ConnectionDone, Connection was closed cleanly.
]
XfrdSaveInfo>connectionLost> [Failure instance: Traceback:
twisted.internet.error.ConnectionDone, Connection was closed cleanly.
]
XfrdInfo>connectionLost> [Failure instance: Traceback:
twisted.internet.error.ConnectionDone, Connection was closed cleanly.
]
Error> save failed
Error> calling errback
***cbremove> [Failure instance: Traceback: xen.xend.XendError.XendError, save
failed
]
***_delete_session> 1
clientConnectionLost> connector= <twisted.internet.tcp.Connector instance at
0xb78fbe0c> reason= [Failure instance: Traceback:
twisted.internet.error.ConnectionDone, Connection was closed cleanly.
]
-- end --
-- jared@xxxxxxxxxxx
"A black hole is where God is dividing by zero."
-- attributed to Roger Smith
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