On Mon, Jul 12, 2010 at 9:17 AM, Justin P. Mattock <justinmattock@xxxxxxxxx> wrote: > On 07/12/2010 12:09 AM, Michael Tokarev wrote: >> >> This looks quite similar to a problem with ext4 and O_SYNC which I >> reported earlier but no one cared to answer (or read?) - there: >> http://permalink.gmane.org/gmane.linux.file-systems/42758 >> (sent to qemu-devel and linux-fsdevel lists - Cc'd too). You can >> try a few other options, esp. cache=none and re-writing some guest >> files to verify. >> >> /mjt > > cool a solution... glad to see... no chance at a bisect with this? > (getting this down too a commit or two makes things easier) > > Justin P. Mattock > I didn't even say what kernel version I was using, sorry! Kernel 2.6.34.1+"patches in stable queue for next stable release". I tried this some time ago with 2.6.33.x(don't remember which version exactly) and it had the same problem, but at the time I stopped trying thinking that it was a kvm problem. So basically there's no known(to me) good version and no, I can't bisect this because this is my production system. Anyway, I suspect this is reproducible. Am I the only one who created a virtual hd file on a Btrfs and then used it with kvm/qemu? I mean, it's not a particularly exotic test-case! -- Giangiacomo -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html