Re: [Xen-users] xen-4 + megasas(DELL 6i RAID) = Reject I/O to offline de
Am 20.07.2010 09:27, schrieb Chao-Rui Chang:
> I have problem with xen-4 + megasas driver (dell raid card 6i).
> The raid controller goes offline randomly.
> ext4-fs error (device dm-0) in ext4_dirty_inode: Journal has aborted
> sd 0:2:0:0: rejecting I/O to offline device
I faced the very same problem today (Intel RS2BL040 a.k.a. LSI MegaSAS
9260 Xen 4.0.1, Debian Linux Kernel 2.6.32-5-xen-amd64 that includes
megaraid_sas driver 4.01) and I remembered that I solved it for another
server with an Intel SRCSAS18E, Xen 3.3 and some other kernel a while
ago. Last time, it was the megaraid_sas driver that caused the
filesystems to go offline randomly when running in a dom0 under Xen. The
system ran stable when the kernel was running on the bare metal.
I don't now yet if this is a permanent solution but I tried to fix it by
repeating the steps from the last time (server is still running after 7
1. Grabbed latest driver (4.31) from LSI. I took the Ubuntu package
(Ubuntu_10_04_LTS_4_31.zip) because it contains sources adjusted to
kernel 2.6.32. There's also a Debian 5.0.5 driver available containing
the sources and binaries for 2.6.26.
2. Unwrapped the driver sources, compiled with
make -C /lib/modules/$(uname -r)/build M=$PWD modules
and installed it (you may want so save the old module first) with
cp -p megaraid_sas.ko /lib/modules/$(uname
3. Updated initrd with
The new driver introduces himself with
megasas: 00.00.04.31-ieee Thur June 17 14:13:02 EST 2010
megasas: 0x1000:0x0079:0x8086:0x9260: bus 5:slot 0:func 0
xen: registering gsi 16 triggering 0 polarity 1
xen_allocate_pirq: returning irq 16 for gsi 16
xen: --> irq=16
Already setup the GSI :16
megaraid_sas 0000:05:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
megaraid_sas 0000:05:00.0: setting latency timer to 64
megasas: FW now in Ready state
scsi0 : LSI SAS based MegaRAID driver
4. Updated the RAID controller firmware to the latest available release.
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