Hey folks,
I''ve recently compiled and installed Xen 4.1 on a machine running
RHEL 5.4. Unfortunately when booting via Xen there''s an IRQ conflict
which prevents dom0 from loading the SATA drivers. This is followed by
a kernel panic because LVM can''t find the root volume.
This is the salient bit from the boot log:
ahci 0000:00:1f.2: AHCI 0001.0200 32 slots 4 ports 1.5 Gbps 0xf impl SATA mode
ahci 0000:00:1f.2: flags: 64bit ncq sntf stag pm led clo pmp pio slum part ems
IRQ handler type mismatch for IRQ 275
Call Trace:
[<ffffffff802b595d>] setup_irq+0x1b7/0x1cf
[<ffffffff880ec18e>] :ahci:ahci_interrupt+0x0/0x644
[<ffffffff802b5a25>] request_irq+0xb0/0xd6
[<ffffffff802b686c>] devm_request_irq+0x5d/0x92
[<ffffffff880ec18e>] :ahci:ahci_interrupt+0x0/0x644
[<ffffffff880bb780>] :libata:ata_host_activate+0x97/0xf1
[<ffffffff880ec078>] :ahci:ahci_init_one+0xa2c/0xa5e
[<ffffffff80352b1e>] pci_device_probe+0x4c/0x75
[<ffffffff803b882c>] pci_bus_probe_wrapper+0x80/0x89
[<ffffffff80352a07>] pci_match_device+0x13/0xbe
[<ffffffff80352ac6>] pci_bus_match+0x14/0x20
[<ffffffff803b1266>] driver_probe_device+0x52/0xaa
[<ffffffff803b1395>] __driver_attach+0x65/0xb6
[<ffffffff803b1330>] __driver_attach+0x0/0xb6
[<ffffffff803b0b6d>] bus_for_each_dev+0x43/0x6e
[<ffffffff803b07a9>] bus_add_driver+0x76/0x110
[<ffffffff80352de2>] __pci_register_driver+0x51/0xa6
[<ffffffff802a4380>] sys_init_module+0xaf/0x1f2
[<ffffffff80260106>] system_call+0x86/0x8b
[<ffffffff80260080>] system_call+0x0/0x8b
ahci: probe of 0000:00:1f.2 failed with error -16
[...]
Activating logical volumes
Volume group "sys" not found
Creating root device.
Mounting root filesystem.
mount: could not find filesystem ''/dev/root''
Setting up other filesystems.
Setting up new root fs
setuproot: moving /dev failed: No such file or directory
no fstab.sys, mounting internal defaults
[...]
switchroot: mount failed: No such file or directory
Kernel panic - not syncing: Attempted to kill init!
(XEN) Domain 0 crashed: rebooting machine in 5 seconds.
I''ve tried fiddling with some kernel settings like irqpoll, noapic,
turning off acpi. But to no avail.
grub.conf:
title Red Hat Enterprise Linux Server Supertaco 4.x (2.6.18-164.el5xen)
root (hd0,0)
kernel /xen-4.1.0.gz dom0_mem=1024M dom0_max_vcpus=0 console=com1
com1=9600,8n1
module /vmlinuz-2.6.18-238.el5xen ro root=/dev/sys/root
hda=noprobe panic=5 console=ttyS0,9600
module /initrd-2.6.18-238.el5xen.img
Now, i''ve tried RHEL 5.3 and RHEL 5.6. Running 2.6.18-164.el5xen and
2.6.18-238.el5xen. Things work fine when I use Xen-3.1.2
Anyone have any suggestions on how to make Xen-4.1 play nice with the
IRQs for my SATA driver?R
thanks!
-James
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