[Bugme-new] [Bug 16545] New: USB mass storage on i7 corrupts SATA filesystem
bugzilla-daemon at bugzilla.kernel.org
bugzilla-daemon at bugzilla.kernel.org
Sun Aug 8 21:02:09 PDT 2010
https://bugzilla.kernel.org/show_bug.cgi?id=16545
Summary: USB mass storage on i7 corrupts SATA filesystem
Product: Drivers
Version: 2.5
Kernel Version: 2.6.32-24-generic-pae
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: USB
AssignedTo: greg at kroah.com
ReportedBy: ajv-912-074-1956 at vsta.org
Regression: No
Newer i7 quad core with 6GB of RAM running in 32 bit mode (problem verified
with and without PAE). System installs and runs OK, but when I attach an
external 1.5TB drive via USB as an ext4 filesystem, and then back up a 1TB
filesystem onto it (using dump), I reliably get through about 75% of the
backup, and then I suddenly find the system offline--unresponsive to keyboard,
no disk activity, no response to pings. On reset there is no sign of what
happened in the logs.
Post-crash fsck shows USB storage OK, partition being backed up OK, but root
filesystem has extensive corruption, requiring manual fsck and repair--in one
case, beyond the abilities of fsck and requiring a filesystem rebuild.
I suspected LVM, but have reproduced without it. I thought it was the drive,
but have swapped in a new drive. I thought it was a PAE issue, but reproduced
with a non-PAE kernel. I am left to wonder if 32-bit kernels are hitting
something Bad when run on an i7 920 motherboard. In about 2 weeks I'll be
swapping out this hardware in its entirety, at which point I can install 64-bit
and see if the problem still reproduces--somebody let me know if that's of
interest.
Otherwise I'm pretty much out of ideas. This is the most messed up I've ever
seen a properly run system get. I'm pretty sure it only happens with USB mass
storage I/O, and I have a moratorium on USB for the system--I'll update if we
hit corruption anyway. So far it's looking OK.
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