File-backed VMs under RAIDframe RAID-1

[Dustin Marquess <dmarquess%gmail.com@localhost>]

All,

I have a question regarding using RAIDframe RAID-1 & Xen.

Months ago on one setup a Linux VM that was P2V'd from a vendor
install (CentOS) got completely corrupt.  I scratched it off as a
vendor problem.

Today my Oracle DBA was complaining that Oracle died with 600 errors.
I logged on to the Xen dom0 and noticed that RAIDframe had kicked a
drive out:

Feb 24 03:37:23 fxnpvm02 /netbsd: wd0a: error reading fsbn 394348511
of 394348511-394348607 (wd0 bn 394348574; cn 391218 tn 13 sn 11),
retrying
Feb 24 03:37:23 fxnpvm02 /netbsd: wd0: (uncorrectable data error)
Feb 24 03:37:23 fxnpvm02 /netbsd: ahcisata0 port 2: device present,
speed: 3.0Gb/s
Feb 24 03:37:25 fxnpvm02 /netbsd: wd0a: error reading fsbn 394348511
of 394348511-394348607 (wd0 bn 394348574; cn 391218 tn 13 sn 11),
retrying
Feb 24 03:37:25 fxnpvm02 /netbsd: wd0: (uncorrectable data error)
Feb 24 03:37:26 fxnpvm02 /netbsd: ahcisata0 port 2: device present,
speed: 3.0Gb/s
Feb 24 03:37:28 fxnpvm02 /netbsd: wd0a: error reading fsbn 394348511
of 394348511-394348607 (wd0 bn 394348574; cn 391218 tn 13 sn 11),
retrying
Feb 24 03:37:28 fxnpvm02 /netbsd: wd0: (uncorrectable data error)
Feb 24 03:37:28 fxnpvm02 /netbsd: ahcisata0 port 2: device present,
speed: 3.0Gb/s
Feb 24 03:37:31 fxnpvm02 /netbsd: wd0a: error reading fsbn 394348511
of 394348511-394348607 (wd0 bn 394348574; cn 391218 tn 13 sn 11),
retrying
Feb 24 03:37:37 fxnpvm02 /netbsd: wd0: (uncorrectable data error)
Feb 24 03:37:37 fxnpvm02 /netbsd: ahcisata0 port 2: device present,
speed: 3.0Gb/s
Feb 24 03:37:37 fxnpvm02 /netbsd: wd0a: error reading fsbn 394348511
of 394348511-394348607 (wd0 bn 394348574; cn 391218 tn 13 sn 11),
retrying
Feb 24 03:37:37 fxnpvm02 /netbsd: wd0: (uncorrectable data error)
Feb 24 03:37:37 fxnpvm02 /netbsd: ahcisata0 port 2: device present,
speed: 3.0Gb/s
Feb 24 03:37:37 fxnpvm02 /netbsd: wd0a: error reading fsbn 394348511
of 394348511-394348607 (wd0 bn 394348574; cn 391218 tn 13 sn 11)
Feb 24 03:37:37 fxnpvm02 /netbsd: wd0: (uncorrectable data error)
Feb 24 03:37:37 fxnpvm02 /netbsd: raid0: IO Error.  Marking /dev/wd0a as failed.
Feb 24 03:37:37 fxnpvm02 /netbsd: ahcisata0 port 2: device present,
speed: 3.0Gb/s

He then reported that the UNDO tablespace had corruption.  This has me
worried as I'm moving more and more servers to this setup.  Is there a
known issue running file-backed VMs under RAIDframe RAID-1?  I
disabled the fakeRAID in the BIOS as I didn't trust it.

Setup:

Supermicro PDSMi-LN4+  w/ Xeon X3220
8GB RAM
2 x 500GB Seagate ST3500320NS
NetBSD/amd64 5.0.0 from Feb 9th (NetBSD 5.0.2 (CMSXEN) #0: Tue Feb  9
19:36:37 CST 2010
root%fxnpvm02.cmsnoc.com@localhost:/usr/src/sys/arch/amd64/compile/CMSXEN)
Xen 3.3.2 frpm pkgsrc (xentools33-3.3.2nb1 / xenkernel33-3.3.2)
The domU is OpenSuse 11.2 with / as ext4, /boot as ext3
Oracle 11g in the domU

Thanks,
-Dustin