Messages in this thread | | | Date | Mon, 23 Jun 2008 12:13:47 -0700 | From | "adam radford" <> | Subject | Re: ext3 directory corruption under Xen |
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On Mon, Jun 23, 2008 at 9:15 AM, Christopher S. Aker <caker@theshore.net> wrote:
> It's happened on a number of different hosts, all of the same hardware and > software configuration (Xen 3.2 64bit, 32bit pae dom0, 32bit pae domUs. LVM > backend with 3ware hardware RAID-1).
Do you have Intel EM64T and the older 3w-xxxx driver with 4GB+ RAM? If so there is a driver patch for older kernels to fix an issue where the driver was over-riding the default DMA direction with DMA_BIDIRECTIONAL, and this caused corruption going through the SWIOTLB code (not IOMMU w/AMD).
A driver patch for older kernels including XenServer-4.1 is available here:
http://www.3ware.com/KB/article.aspx?id=15243&cNode=6I1C6S
This doesn't explain however your failures with 2.6.24 2.6.25, etc, since this issue is no longer valid after the scsi_dma_map() changes that went into most scsi drivers since 2.6.23.
-Adam
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