Hi, all! On Saturday, 22 August 2009 10:59:47 -0300, Daniel Bareiro wrote:
> According to I see in this document [1], is necessary that is loaded
> two modules in the guest: acpiphp and pci_hotplug.
>
> The pci_hotplug module is loaded. Nevertheless, in spite of existing
> the acpiphp module, cannot be loaded:
>
> chandra:~# lsmod|grep pci_hotplug
> pci_hotplug 23460 0
>
> chandra:~# modprobe acpiphp
> FATAL: Error inserting acpiphp
> (/lib/modules/2.6.26-2-686/kernel/drivers/pci/hotplug/acpiphp.ko): No such
> device
>
> chandra:~# locate acpiphp | grep 686
> /lib/modules/2.6.26-2-686/kernel/drivers/pci/hotplug/acpiphp.ko
> /lib/modules/2.6.26-2-686/kernel/drivers/pci/hotplug/acpiphp_ibm.ko
>
>
> Which could be being the problem?
I was doing other tests this time with Linux 2.6.31.2 compiled by myself
from the sources of kernel.org. This time with loading the acpiphp
module, the pci_hotplug module was loaded automatically without I get
some type of error message.
central:~# lsmod | grep acpiphp
central:~#
central:~# modprobe acpiphp
central:~#
central:~# lsmod | grep acpiphp
acpiphp 22140 0
pci_hotplug 29024 1 acpiphp
Then, I tried to add a disk of the following way in host:
(qemu) pci_add auto storage file=/dev/vm/central-test,if=virtio
OK domain 0, bus 0, slot 5, function 0
In the guest:
Oct 11 18:09:01 central kernel: [ 833.403875] pci 0000:00:02.0: BAR 6: bogus
alignment [0x0-0x0] flags 0x2
Oct 11 18:09:01 central kernel: [ 833.406337] decode_hpp: Could not get
hotplug parameters. Use defaults
Oct 11 18:09:01 central kernel: [ 833.430492] virtio-pci 0000:00:05.0:
enabling device (0000 -> 0001)
Oct 11 18:09:01 central kernel: [ 833.452268] ACPI: PCI Interrupt Link [LNKA]
enabled at IRQ 10
Oct 11 18:09:01 central kernel: [ 833.454668] virtio-pci 0000:00:05.0: PCI INT
A -> Link[LNKA] -> GSI 10 (level, high) -> IRQ 10
Oct 11 18:09:01 central kernel: [ 833.500051] Clocksource tsc unstable (delta
= -148257950 ns)
Oct 11 18:09:01 central kernel: [ 833.566755] vda: vda1
Then I attempt to remove the device assuring previously that it is not
being used in guest:
(qemu) pci_del 5
In the guest:
Oct 11 18:13:32 central kernel: [ 1104.144179] virtio-pci 0000:00:05.0: PCI INT
A disabled
But if I want to add the device again, I get a segmentation fault of the
process that handles this virtual machine:
(qemu) pci_add auto storage file=/dev/vm/central-test,if=virtio
Connection closed by foreign host.
r...@ubuntu:~# tail -f /var/log/messages
[...]
Oct 11 18:21:29 ubuntu kernel: [692002.207026] qemu-system-x86[3481]: segfault
at 8d0 ip 000000000041a183 sp 00007fff848ef9f0 error 6 in
qemu-system-x86_64[400000+219000]
Oct 11 18:21:29 ubuntu kernel: [692002.291714] br0: port 4(tap2) entering
disabled state
Oct 11 18:21:29 ubuntu kernel: [692002.330875] br0: port 4(tap2) entering
disabled state
Also I was testing using if=scsi and when I trying to remove the device,
can be seen a 'tainted' in guest. In host:
(qemu) pci_add auto storage file=/dev/vm/central-test,if=scsi
In guest:
Oct 11 18:35:51 central kernel: [ 199.375026] pci 0000:00:02.0: BAR 6: bogus
alignment [0x0-0x0] flags 0x2
Oct 11 18:35:51 central kernel: [ 199.377801] decode_hpp: Could not get
hotplug parameters. Use defaults
Oct 11 18:35:51 central kernel: [ 199.484410] sym53c8xx 0000:00:05.0: enabling
device (0000 -> 0003)
Oct 11 18:35:51 central kernel: [ 199.495739] ACPI: PCI Interrupt Link [LNKA]
enabled at IRQ 10
Oct 11 18:35:51 central kernel: [ 199.498165] sym53c8xx 0000:00:05.0: PCI INT
A -> Link[LNKA] -> GSI 10 (level, high) -> IRQ 10
Oct 11 18:35:51 central kernel: [ 199.503886] sym0: <895a> rev 0x0 at pci
0000:00:05.0 irq 10
Oct 11 18:35:51 central kernel: [ 199.508711] sym0: No NVRAM, ID 7, Fast-40,
LVD, parity checking
Oct 11 18:35:51 central kernel: [ 199.512023] sym0: SCSI BUS has been reset.
Oct 11 18:35:51 central kernel: [ 199.530575] scsi2 : sym-2.2.3
Oct 11 18:35:54 central kernel: [ 202.512229] scsi 2:0:0:0: Direct-Access
QEMU QEMU HARDDISK 0.10 PQ: 0 ANSI: 3
Oct 11 18:35:54 central kernel: [ 202.515687] target2:0:0: tagged command
queuing enabled, command queue depth 16.
Oct 11 18:35:54 central kernel: [ 202.519013] target2:0:0: Beginning Domain
Validation
Oct 11 18:35:54 central kernel: [ 202.521737] target2:0:0: Domain Validation
skipping write tests
Oct 11 18:35:54 central kernel: [ 202.524167] target2:0:0: Ending Domain
Validation
Oct 11 18:35:54 central kernel: [ 202.530816] sd 2:0:0:0: Attached scsi
generic sg3 type 0
Oct 11 18:35:54 central kernel: [ 202.533321] sd 2:0:0:0: [sdc] 10485760
512-byte logical blocks: (5.36 GB/5.00 GiB)
Oct 11 18:35:54 central kernel: [ 202.536661] sd 2:0:0:0: [sdc] Write Protect
is off
Oct 11 18:35:54 central kernel: [ 202.538825] sd 2:0:0:0: [sdc] Write cache:
enabled, read cache: enabled, doesn't support DPO or FUA
Oct 11 18:35:54 central kernel: [ 202.543108] sdc: sdc1
Oct 11 18:35:54 central kernel: [ 202.557622] sd 2:0:0:0: [sdc] Attached SCSI
disk
Then I attempt to remove the device assuring previously that it is not
being used in guest:
(qemu) pci_del 5
In the guest:
Oct 11 18:35:54 central kernel: [ 202.557622] sd 2:0:0:0: [sdc] Attached SCSI
disk
Oct 11 18:38:11 central kernel: [ 338.629461] sd 2:0:0:0: [sdc] Synchronizing
SCSI cache
Oct 11 18:38:11 central kernel: [ 338.631863] sym0: detaching ...
Oct 11 18:38:11 central kernel: [ 338.633432] sym0: resetting chip
Oct 11 18:38:11 central kernel: [ 338.635014] ------------[] cut here
]------------
Oct 11 18:38:11 central kernel: [ 338.636999] WARNING: at
/space/src/linux-2.6.31.2/arch/x86/include/asm/dma-mapping.h:132
___free_dma_mem_cluster+0x78/0xd4 [sym53c8xx]()
Oct 11 18:38:11 central kernel: [ 338.637414] Hardware name:
Oct 11 18:38:11 central kernel: [ 338.637414] Modules linked in: sym53c8xx
scsi_transport_spi acpiphp pci_hotplug loop serio_raw psmouse snd_pcsp
parport_pc parport snd_pcm snd_timer virtio_net
virtio_balloon snd soundcore snd_page_alloc button processor i2c_piix4 i2c_core
evdev ext3 jbd mbcache sg sr_mod cdrom sd_mod piix ide_pci_generic ide_core
ata_piix ata_generic libata virtio_pci
virtio_ring virtio scsi_mod thermal fan thermal_sys [last unloaded:
scsi_wait_scan]
Oct 11 18:38:11 central kernel: [ 338.637414] Pid: 75, comm: kacpi_notify Not
tainted 2.6.31.2-dgb #1
Oct 11 18:38:11 central kernel: [ 338.637414] Call Trace:
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffffa023c92c>] ?
___free_dma_mem_cluster+0x78/0xd4 [sym53c8xx]
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffffa023c92c>] ?
___free_dma_mem_cluster+0x78/0xd4 [sym53c8xx]
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff8104244e>] ?
warn_slowpath_common+0x77/0xa3
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff81199288>] ?
acpi_os_execute_deferred+0x0/0x2c
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffffa023c92c>] ?
___free_dma_mem_cluster+0x78/0xd4 [sym53c8xx]
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffffa023c88f>] ?
__sym_mfree_dma+0x9d/0xc2 [sym53c8xx]
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff81199288>] ?
acpi_os_execute_deferred+0x0/0x2c
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffffa0236601>] ?
sym_hcb_free+0x79/0x1af [sym53c8xx]
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffffa023474e>] ?
sym_free_resources+0x52/0x71 [sym53c8xx]
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffffa023480b>] ?
sym_detach+0x9e/0xb5 [sym53c8xx]
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffffa0234846>] ?
sym2_remove+0x24/0x40 [sym53c8xx]
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff8117f2a4>] ?
pci_device_remove+0x24/0x47
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff811e4cb4>] ?
__device_release_driver+0x77/0xbf
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff811e4db2>] ?
device_release_driver+0x1e/0x2a
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff811e43b6>] ?
bus_remove_device+0x9f/0xbe
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff811e2ad8>] ?
device_del+0x130/0x16e
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff811e2b1f>] ?
device_unregister+0x9/0x12
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff8117b023>] ?
pci_stop_bus_device+0x53/0x5f
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffffa021ec07>] ?
acpiphp_disable_slot+0x95/0x1af [acpiphp]
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff81059eec>] ?
up+0xe/0x36
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff81199288>] ?
acpi_os_execute_deferred+0x0/0x2c
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffffa021f442>] ?
handle_hotplug_event_func+0x10c/0x13e [acpiphp]
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff8119ae91>] ?
acpi_bus_get_device+0x1d/0x2e
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff8119af29>] ?
acpi_bus_notify+0x43/0x79
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff811a8122>] ?
acpi_ev_notify_dispatch+0x57/0x61
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff811992ab>] ?
acpi_os_execute_deferred+0x23/0x2c
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff81052992>] ?
worker_thread+0x173/0x20f
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff8105699a>] ?
autoremove_wake_function+0x0/0x2e
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff8105281f>] ?
worker_thread+0x0/0x20f
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff8105664c>] ?
kthread+0x8b/0x93
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff8100caea>] ?
child_rip+0xa/0x20
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff810565c1>] ?
kthread+0x0/0x93
Oct 11 18:38:11 central kernel: [ 338.637414] [<ffffffff8100cae0>] ?
child_rip+0x0/0x20
Oct 11 18:38:11 central kernel: [ 338.637414] ---[] end trace 446c5343fa7322b8
]---
Oct 11 18:38:11 central kernel: [ 338.755839] ------------[] cut here
]------------
[ ... This error appears four times followed in log ... ]
Oct 11 18:38:11 central kernel: [ 339.333405] sym53c8xx 0000:00:05.0: PCI INT
A disabled
I try to add the disk again:
(qemu) pci_add auto storage file=/dev/vm/central-test,if=scsi
OK domain 0, bus 0, slot 5, function 0
But this time in guest is not finished making the detection:
Oct 11 18:43:17 central kernel: [ 645.159958] pci 0000:00:02.0: BAR 6: bogus
alignment [0x0-0x0] flags 0x2
Oct 11 18:43:17 central kernel: [ 645.162594] decode_hpp: Could not get
hotplug parameters. Use defaults
Oct 11 18:43:17 central kernel: [ 645.172372] sym53c8xx 0000:00:05.0: enabling
device (0000 -> 0003)
Oct 11 18:43:17 central kernel: [ 645.174952] sym53c8xx 0000:00:05.0: PCI INT
A -> Link[LNKA] -> GSI 10 (level, high) -> IRQ 10
Oct 11 18:43:17 central kernel: [ 645.180729] sym0: <895a> rev 0x0 at pci
0000:00:05.0 irq 10
Oct 11 18:43:17 central kernel: [ 645.202337] sym0: No NVRAM, ID 7, Fast-40,
LVD, parity checking
Oct 11 18:43:17 central kernel: [ 645.208610] sym0: SCSI BUS has been reset.
Oct 11 18:43:17 central kernel: [ 645.224164] scsi3 : sym-2.2.3
And from this moment I'm not able to remove the disk.
Which can now be the problem?
Thanks in advance for your reply.
Regards,
Daniel
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