[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] AW: [Xen-devel] VHD BUG in xen4.0 when install windows2008
As I'm seeing a similar behavior of tapdisk2 (see my recent posts to xen-users, especially "blktap2, also broken in current pv_ops stable-2.6.32.x?"), I can confirm that at least in my testing (I've done some more over the weekend, re. that message), this is indeed an "SMP-related" problem, but only for HVM-64bit domains. What I can basically say is that: 1) Uni/Multi/32-bit/64-bit PV domains run properly. 1) Uni-VCPU, 32-bit HVM domains run properly. 2) Multi-VCPU, 32-bit HVM domains run properly. 3) Uni-VCPU, 64-bit HVM domains run properly. 4) Multi-VCPU, 64-bit HVM domains cause tapdisk2 to segfault, sometimes, under heavy I/O, and if that happens, causes the Dom0-kernel to freeze/lock up, Bug, and/or all other kinds of undefined behavior, where I really haven't made out a pattern yet. Interestingly, these errors do not happen when using the "normal" blkback-driver, and I'm very positive (at least that's what happened during my testing) that it's specific to Multi-VCPU, 64-bit HVM domains that the crash occurs, independent of the number of VCPUs bound to Dom0. --- Heiko. -----UrsprÃngliche Nachricht----- Von: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] Im Auftrag von Daniel Stodden Gesendet: Sonntag, 9. Mai 2010 20:41 An: Pasi KÃrkkÃinen Cc: Ian Pratt; yingbin wang; xen-devel@xxxxxxxxxxxxxxxxxxx Betreff: Re: [Xen-devel] VHD BUG in xen4.0 when install windows2008 On Sat, 2010-05-08 at 15:52 -0400, Pasi KÃrkkÃinen wrote: > On Sun, May 09, 2010 at 01:02:42AM +0800, yingbin wang wrote: > > I have try xenlinux 2.6.18.8. the problem also appear. os can not > > startup. > > > > Windows 2008 R2 Standard Edition 64(disk size: 20G, C:\ 15G, D:\ 5G) on > > vhd file, the problem appear. > > does anyone successfully install Windows 2008 R2 Standard Edition 64(disk > > size: 20G, C:\ 15G, D:\ 5G) on vhd file?? > > env : (xen4.0, kernel2.6.31.13) or (xen4.0, kernel2.6.18.8) > > > > Looking at the log (below) it seems the 'tapdisk2' process segfaults > (crashes). > Sounds like a bug in it.. This is the loop pulling requests from the userspace I/O ring. Missing a sanity check on the message content, hence the crash. I would have bet it's smp-related, but sounds as if not. Daniel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |