From: "adam radford" <aradford@gmail.com>
To: "Christopher S. Aker" <caker@theshore.net>
Cc: linux-kernel@vger.kernel.org,
"xen devel" <xen-devel@lists.xensource.com>
Subject: Re: ext3 directory corruption under Xen
Date: Mon, 23 Jun 2008 12:13:47 -0700 [thread overview]
Message-ID: <b1bc6a000806231213p162cea21y37ed9ec1d3bb39fd@mail.gmail.com> (raw)
In-Reply-To: <485FCC25.7090401@theshore.net>
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this issue is no longer valid after the scsi_dma_map() changes that went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
next prev parent reply other threads:[~2008-06-23 19:13 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-23 16:15 Christopher S. Aker
2008-06-23 19:13 ` adam radford [this message]
2008-06-23 19:53 ` Christopher S. Aker
2008-06-23 23:08 ` adam radford
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