On Sun, 4 Nov 2012, Stefan Priebe wrote: > Can i merge wip-rbd-read into master? Yeah. I'm going to do a bit more testing first before I do it, but it should apply cleanly. Hopefully later today. sage > > Stefan > Am 04.11.2012 15:06, schrieb Sage Weil: > > On Sun, 4 Nov 2012, Stefan Priebe wrote: > > > Hello, > > > > > > while benchmarking the new v2 rbd format i saw several crashes of KVM. > > > First i > > > thought this was kernel related but i was just happening faster with one > > > kernel than the other. > > > > Can you try the wip-rbd-read branch? It has a bunch of fixes that aren't > > in master yet. I haven't seen this specific crash (I don't think), but I > > was reliable hitting other issues with master that wip-rbd-read reslves. > > > > Alternatively, you could cherry-pick > > b1d866efbdf7e8a7bc083b1f3ea56f24e10c8fcd, which I'm guessing is your > > problem. > > > > Thanks! > > sage > > > > > > > > > > The KVM crash / exit looks like this: > > > librbd/AioCompletion.cc: In function 'void > > > librbd::AioCompletion::complete_request(CephContext*, ssize_t)' thread > > > 7f73db67c780 time 2012-11-04 14:59:44.997009 > > > librbd/AioCompletion.cc: 43: FAILED assert(bl.length() == read_buf_len) > > > ceph version 0.53-585-ga01b112 > > > (a01b112d71a0b6a1bb206d53867d13536d17bbf6) > > > 1: (librbd::AioCompletion::complete_request(CephContext*, long)+0xa89) > > > [0x7f73d9337319] > > > 2: (librbd::C_AioRead::finish(int)+0x174) [0x7f73d93374e4] > > > 3: (Context::complete(int)+0xa) [0x7f73d933796a] > > > 4: (librbd::C_CacheRead::finish(int)+0xe) [0x7f73d933683e] > > > 5: (Context::complete(int)+0xa) [0x7f73d933796a] > > > 6: (librbd::ImageCtx::aio_read_from_cache(object_t, ceph::buffer::list*, > > > unsigned long, unsigned long, Context*)+0x3a0) [0x7f73d9347bd0] > > > 7: (librbd::aio_read(librbd::ImageCtx*, std::vector<std::pair<unsigned > > > long, > > > unsigned long>, std::allocator<std::pair<unsigned long, unsigned long> > > > > > const&, char*, ceph::buffer::list*, librbd::AioCompletion*)+0x765) > > > [0x7f73d9354995] > > > 8: (librbd::aio_read(librbd::ImageCtx*, unsigned long, unsigned long, > > > char*, > > > ceph::buffer::list*, librbd::AioCompletion*)+0xa2) [0x7f73d9354f92] > > > 9: (()+0x9f2de) [0x7f73db73d2de] > > > 10: (()+0x9f490) [0x7f73db73d490] > > > 11: (()+0x83c45) [0x7f73db721c45] > > > 12: (()+0x850ea) [0x7f73db7230ea] > > > NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed > > > to > > > interpret this. > > > terminate called after throwing an instance of 'ceph::FailedAssertion' > > > > > > Stefan > > > -- > > > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > > > > > -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
