On Tue, 19 Apr 2011 05:08:05 -0700 Chris Mason wrote: > > Excerpts from Cheng Shao's message of 2011-04-18 17:49:29 -0400: > > Hi there, > > > > I'm periodically having issues with btrfs running in a Ubuntu VM using > > VirtualBox. After the VM has been running for a while (a couple days), > > any write operation seems getting stuck. The read seems totally fine. > > I tried a simple dd of a 4M file and it got stuck after writing 131K > > worth of data. > > > > I don't know if this is btrfs related, or it is due to some bug in > > VritualBox. Could you guys provide information on how to debug this > > (collecting logs, getting dumps etc.)? Thanks a lot! > > Which kernel are you running? > Not reproducible with Linux 2.6.38.2-9.fc15.x86_64, Fedora 15 beta2, VirtualBox 4.06 on a Mac OS X host. Unrelated to btrfs but related to VirtualBox write hang, I did experience numerous hangs during installation of F15, which were apparently* resolved with kernel parameter clocksource=jiffies which is not related to btrfs, and was not previously required for F14 with earlier versions of VirtualBox. Chris Murphy * I say apparently with a sample of 8 failures without the option and 1 success with the option.-- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
