Hallo all
We also facing the problem and we would like to upgrade the clients to the specific release.
@jason can you point us to the respective commit and the point release that contains the fix?
Thanks in advance for your help.
Best regards,
Michael
On 18.09.20, 15:12, "Lomayani S. Laizer" <lomlaizer@xxxxxxxxx> wrote:
Hello Jason,
I confirm this release fixes the crashes. there is no a single crash for
past 4 days
On Mon, Sep 14, 2020 at 2:55 PM Jason Dillaman <jdillama@xxxxxxxxxx> wrote:
> On Mon, Sep 14, 2020 at 5:13 AM Lomayani S. Laizer <lomlaizer@xxxxxxxxx>
> wrote:
> >
> > Hello,
> > Last week i got time to try debug crashes of these vms
> >
> > Below log includes rados debug which i left last time
> >
> > https://storage.habari.co.tz/index.php/s/AQEJ7tQS7epC4Zn
> >
> > I have observed the following with these settings in openstack and ceph
> >
> > disk_cachemodes="network=writeback" is set in openstack environment
> > and in ceph rbd_cache_policy = writearound is set--- crashes occur
> >
> > disk_cachemodes="network=writeback" is set in openstack environment
> > and in ceph rbd_cache_policy = writeback is set--- no crashes
> >
> > disk_cachemodes="none" is set in openstack environment and in ceph
> > rbd_cache_policy = writearound is set---- no crashes
> >
> > disk_cachemodes="none" is set in openstack environment and in ceph
> > rbd_cache_policy = writeback is set --- crashes occur
> >
> > Is disk_cachemodes="network=writeback" is no longer recommended in
> > octopus because i see it is left out in new documentation for octopus?
> >
> > https://ceph.readthedocs.io/en/latest/rbd/rbd-openstack/
>
> Can you try the latest development release of Octopus [1]? A librbd
> crash fix has been sitting in that branch for about a month now to be
> included in the next point release.
>
> >
> >
> > >* > Hello,*
> > >* >*
> > >* > Below is full debug log of 2 minutes before crash of virtual
> machine.*
> > >* Download from below url*
> > >* >*
> > >* > https://storage.habari.co.tz/index.php/s/31eCwZbOoRTMpcU <
> https://storage.habari.co.tz/index.php/s/31eCwZbOoRTMpcU>*
> > >
> > >* This log has rbd debug output, but not rados :(*
> > >
> > >* I guess you'll need to try and capture a coredump if you can't get a*
> > >* backtrace.*
> > >
> > >* I'd also suggest opening a tracker in case one of the rbd devs has
> any*
> > >* ideas on this, or has seen something similar. Without a backtrace or*
> > >* core it will be impossible to definitively identify the issue though.*
> > >
> >
> > +1 to needing the backtrace. I don't see any indications of a problem in
> > that log.
> >
> >
> > >* >*
> > >* >*
> > >* > apport.log*
> > >* >*
> > >* > Wed May 13 09:35:30 2020: host pid 4440 crashed in a separate mount*
> > >* namespace, ignoring*
> > >* >*
> > >* > kernel.log*
> > >* > May 13 09:35:30 compute5 kernel: [123071.373217]
> fn-radosclient[4485]:*
> > >* segfault at 0 ip 00007f4c8c85d7ed sp 00007f4c66ffc470 error 4 in*
> > >* librbd.so.1.12.0[7f4c8c65a000+5cb000]*
> > >* > May 13 09:35:30 compute5 kernel: [123071.373228] Code: 8d 44 24 08
> 48 81*
> > >* c3 d8 3e 00 00 49 21 f9 48 c1 e8 30 83 c0 01 48 c1 e0 30 48 89 02 48
> 8b 03*
> > >* 48 89 04 24 48 8b 34 24 48 21 fe <48> 8b 06 48 89 44 24 08 48 8b 44
> 24 08*
> > >* 48 8b 0b 48 21 f8 48 39 0c*
> > >* > May 13 09:35:33 compute5 kernel: [123074.832700] brqa72d845b-e9:
> port*
> > >* 1(tap33511c4d-2c) entered disabled state*
> > >* > May 13 09:35:33 compute5 kernel: [123074.838520] device
> tap33511c4d-2c*
> > >* left promiscuous mode*
> > >* > May 13 09:35:33 compute5 kernel: [123074.838527] brqa72d845b-e9:
> port*
> > >* 1(tap33511c4d-2c) entered disabled state*
> > >* >*
> > >* > syslog*
> > >* > compute5 kernel: [123071.373217] fn-radosclient[4485]: segfault at
> 0 ip*
> > >* 00007f4c8c85d7ed sp 00007f4c66ffc470 error 4 i*
> > >* > n librbd.so.1.12.0[7f4c8c65a000+5cb000]*
> > >* > May 13 09:35:30 compute5 kernel: [123071.373228] Code: 8d 44 24 08
> 48 81*
> > >* c3 d8 3e 00 00 49 21 f9 48 c1 e8 30 83 c0 01 48 c1 e0 30 48 8*
> > >* > 9 02 48 8b 03 48 89 04 24 48 8b 34 24 48 21 fe <48> 8b 06 48 89 44
> 24 08*
> > >* 48 8b 44 24 08 48 8b 0b 48 21 f8 48 39 0c*
> > >* > May 13 09:35:30 compute5 libvirtd[1844]: internal error: End of
> file*
> > >* from qemu monitor*
> > >* > May 13 09:35:33 compute5 systemd-networkd[1326]: tap33511c4d-2c:
> Link*
> > >* DOWN*
> > >* > May 13 09:35:33 compute5 systemd-networkd[1326]: tap33511c4d-2c:
> Lost*
> > >* carrier*
> > >* > May 13 09:35:33 compute5 kernel: [123074.832700] brqa72d845b-e9:
> port*
> > >* 1(tap33511c4d-2c) entered disabled state*
> > >* > May 13 09:35:33 compute5 kernel: [123074.838520] device
> tap33511c4d-2c*
> > >* left promiscuous mode*
> > >* > May 13 09:35:33 compute5 kernel: [123074.838527] brqa72d845b-e9:
> port*
> > >* 1(tap33511c4d-2c) entered disabled state*
> > >* > May 13 09:35:33 compute5 networkd-dispatcher[1614]: Failed to
> request*
> > >* link: No such device*
> > >* >*
> > >* > On Fri, May 8, 2020 at 5:40 AM Brad Hubbard <bhubbard@xxxxxxxxxx>
> wrote:*
> > >* >>*
> > >* >> On Fri, May 8, 2020 at 12:10 PM Lomayani S. Laizer
> <lomlaizer@xxxxxxxxx>*
> > >* wrote:*
> > >* >> >*
> > >* >> > Hello,*
> > >* >> > On my side at point of vm crash these are logs below. At the
> moment*
> > >* my debug is at 10 value. I will rise to 20 for full debug. these
> crashes*
> > >* are random and so far happens on very busy vms. Downgrading clients
> in host*
> > >* to Nautilus these crashes disappear*
> > >* >>*
> > >* >> You could try adding debug_rados as well but you may get a very
> large*
> > >* >> log so keep an eye on things.*
> > >* >>*
> > >* >> >*
> > >* >> > Qemu is not shutting down in general because other vms on the
> same*
> > >* host continues working*
> > >* >>*
> > >* >> A process can not reliably continue after encountering a segfault
> so*
> > >* >> the qemu-kvm process must be ending and therefore it should be*
> > >* >> possible to capture a coredump with the right configuration.*
> > >* >>*
> > >* >> In the following example, if you were to search for pid 6060 you
> would*
> > >* >> find it is no longer running.*
> > >* >> >> > [ 7682.233684] fn-radosclient[6060]: segfault at 2b19 ip*
> > >* 00007f8165cc0a50 sp 00007f81397f6490 error 4 in*
> > >* librbd.so.1.12.0[7f8165ab4000+537000]*
> > >* >>*
> > >* >> Without a backtrace at a minimum it may be very difficult to work
> out*
> > >* >> what's going on with certainty. If you open a tracker for the
> issue*
> > >* >> though maybe one of the devs specialising in rbd may have some*
> > >* >> feedback.*
> > >* >>*
> > >* >> >*
> > >* >> > 2020-05-07T13:02:12.121+0300 7f88d57fa700 10
> librbd::io::ReadResult:*
> > >* 0x7f88c80bfbf0 finish: got {} for [0,24576] bl 24576*
> > >* >> > 2020-05-07T13:02:12.193+0300 7f88d57fa700 10
> librbd::io::ReadResult:*
> > >* 0x7f88c80f9330 finish: C_ObjectReadRequest: r=0*
> > >* >> > 2020-05-07T13:02:12.193+0300 7f88d57fa700 10
> librbd::io::ReadResult:*
> > >* 0x7f88c80f9330 finish: got {} for [0,16384] bl 16384*
> > >* >> > 2020-05-07T13:02:28.694+0300 7f890ba90500 10 librbd::ImageState:*
> > >* 0x5569b5da9bb0 0x5569b5da9bb0 send_close_unlock*
> > >* >> > 2020-05-07T13:02:28.694+0300 7f890ba90500 10 librbd::ImageState:*
> > >* 0x5569b5da9bb0 0x5569b5da9bb0 send_close_unlock*
> > >* >> > 2020-05-07T13:02:28.694+0300 7f890ba90500 10*
> > >* librbd::image::CloseRequest: 0x7f88c8175fd0 send_block_image_watcher*
> > >* >> > 2020-05-07T13:02:28.694+0300 7f890ba90500 10
> librbd::ImageWatcher:*
> > >* 0x7f88c400dfe0 block_notifies*
> > >* >> > 2020-05-07T13:02:28.694+0300 7f890ba90500 5 librbd::Watcher:*
> > >* 0x7f88c400dfe0 block_notifies: blocked_count=1*
> > >* >> > 2020-05-07T13:02:28.694+0300 7f890ba90500 10*
> > >* librbd::image::CloseRequest: 0x7f88c8175fd0
> handle_block_image_watcher: r=0*
> > >* >> > 2020-05-07T13:02:28.694+0300 7f890ba90500 10*
> > >* librbd::image::CloseRequest: 0x7f88c8175fd0
> send_shut_down_update_watchers*
> > >* >> > 2020-05-07T13:02:28.694+0300 7f88d4ff9700 10*
> > >* librbd::image::CloseRequest: 0x7f88c8175fd0*
> > >* handle_shut_down_update_watchers: r=0*
> > >* >> > 2020-05-07T13:02:28.694+0300 7f88d4ff9700 10*
> > >* librbd::image::CloseRequest: 0x7f88c8175fd0 send_shut_down_io_queue*
> > >* >> > 2020-05-07T13:02:28.694+0300 7f88d4ff9700 5*
> > >* librbd::io::ImageRequestWQ: 0x7f88e8001570 shut_down: shut_down:
> in_flight=0*
> > >* >> > 2020-05-07T13:02:28.694+0300 7f88d4ff9700 10*
> > >* librbd::image::CloseRequest: 0x7f88c8175fd0
> handle_shut_down_io_queue: r=0*
> > >* >> > 2020-05-07T13:02:28.694+0300 7f88d4ff9700 10*
> > >* librbd::image::CloseRequest: 0x7f88c8175fd0
> send_shut_down_exclusive_lock*
> > >* >> > 2020-05-07T13:02:28.694+0300 7f88d4ff9700 10
> librbd::ExclusiveLock:*
> > >* 0x7f88c4011ba0 shut_down*
> > >* >> > 2020-05-07T13:02:28.694+0300 7f88d4ff9700 10
> librbd::ManagedLock:*
> > >* 0x7f88c4011bb8 shut_down:*
> > >* >> > 2020-05-07T13:02:28.694+0300 7f88d4ff9700 10
> librbd::ManagedLock:*
> > >* 0x7f88c4011bb8 send_shutdown:*
> > >* >> > 2020-05-07T13:02:28.694+0300 7f88d4ff9700 10
> librbd::ManagedLock:*
> > >* 0x7f88c4011bb8 send_shutdown_release:*
> > >* >> > 2020-05-07T13:02:28.694+0300 7f88d4ff9700 10
> librbd::ExclusiveLock:*
> > >* 0x7f88c4011ba0 pre_release_lock_handler*
> > >* >> > 2020-05-07T13:02:28.694+0300 7f88d4ff9700 10*
> > >* librbd::exclusive_lock::PreReleaseRequest: 0x7f88c80b6020*
> > >* send_cancel_op_requests:*
> > >* >> > 2020-05-07T13:02:28.694+0300 7f88d4ff9700 10*
> > >* librbd::exclusive_lock::PreReleaseRequest: 0x7f88c80b6020*
> > >* handle_cancel_op_requests: r=0*
> > >* >> > 2020-05-07T13:02:28.694+0300 7f88d4ff9700 10*
> > >* librbd::exclusive_lock::PreReleaseRequest: 0x7f88c80b6020
> send_block_writes:*
> > >* >> > 2020-05-07T13:02:28.698+0300 7f88d4ff9700 5*
> > >* librbd::io::ImageRequestWQ: 0x7f88e8001570 block_writes:
> 0x5569b5e1ffd0,*
> > >* num=1*
> > >* >> > 2020-05-07T13:02:28.698+0300 7f88d4ff9700 10*
> > >* librbd::exclusive_lock::PreReleaseRequest: 0x7f88c80b6020*
> > >* handle_block_writes: r=0*
> > >* >> > 2020-05-07T13:02:28.698+0300 7f88d4ff9700 10*
> > >* librbd::exclusive_lock::PreReleaseRequest: 0x7f88c80b6020
> send_wait_for_ops:*
> > >* >> > 2020-05-07T13:02:28.698+0300 7f88d4ff9700 10*
> > >* librbd::exclusive_lock::PreReleaseRequest: 0x7f88c80b6020*
> > >* handle_wait_for_ops:*
> > >* >> > 2020-05-07T13:02:28.698+0300 7f88d4ff9700 10*
> > >* librbd::exclusive_lock::PreReleaseRequest: 0x7f88c80b6020*
> > >* send_invalidate_cache:*
> > >* >> > 2020-05-07T13:02:28.698+0300 7f88d4ff9700 5*
> > >* librbd::io::ObjectDispatcher: 0x5569b5dab700 invalidate_cache:*
> > >* >> > 2020-05-07T13:02:28.698+0300 7f88d4ff9700 10*
> > >* librbd::exclusive_lock::PreReleaseRequest: 0x7f88c80b6020*
> > >* handle_invalidate_cache: r=0*
> > >* >> > 2020-05-07T13:02:28.698+0300 7f88d4ff9700 10*
> > >* librbd::exclusive_lock::PreReleaseRequest: 0x7f88c80b6020*
> > >* send_flush_notifies:*
> > >* >> > 2020-05-07T13:02:28.698+0300 7f88d4ff9700 10*
> > >* librbd::exclusive_lock::PreReleaseRequest: 0x7f88c80b6020*
> > >* handle_flush_notifies:*
> > >* >> > 2020-05-07T13:02:28.698+0300 7f88d4ff9700 10*
> > >* librbd::exclusive_lock::PreReleaseRequest: 0x7f88c80b6020*
> > >* send_close_object_map:*
> > >* >> > 2020-05-07T13:02:28.698+0300 7f88d4ff9700 10*
> > >* librbd::object_map::UnlockRequest: 0x7f88c807a450 send_unlock:*
> > >* oid=rbd_object_map.2f18f2a67fad72*
> > >* >> > 2020-05-07T13:02:28.702+0300 7f88d57fa700 10*
> > >* librbd::object_map::UnlockRequest: 0x7f88c807a450 handle_unlock: r=0*
> > >* >> > 2020-05-07T13:02:28.702+0300 7f88d57fa700 10*
> > >* librbd::exclusive_lock::PreReleaseRequest: 0x7f88c80b6020*
> > >* handle_close_object_map: r=0*
> > >* >> > 2020-05-07T13:02:28.702+0300 7f88d57fa700 10*
> > >* librbd::exclusive_lock::PreReleaseRequest: 0x7f88c80b6020
> send_unlock:*
> > >* >> > 2020-05-07T13:02:28.702+0300 7f88d4ff9700 10
> librbd::ManagedLock:*
> > >* 0x7f88c4011bb8 handle_shutdown_pre_release: r=0*
> > >* >> > 2020-05-07T13:02:28.702+0300 7f88d4ff9700 10*
> > >* librbd::managed_lock::ReleaseRequest: 0x7f88c80b68a0 send_unlock:*
> > >* entity=client.58292796, cookie=auto 140225447738256*
> > >* >> > 2020-05-07T13:02:28.702+0300 7f88d57fa700 10*
> > >* librbd::managed_lock::ReleaseRequest: 0x7f88c80b68a0 handle_unlock:
> r=0*
> > >* >> > 2020-05-07T13:02:28.702+0300 7f88d4ff9700 10
> librbd::ExclusiveLock:*
> > >* 0x7f88c4011ba0 post_release_lock_handler: r=0 shutting_down=1*
> > >* >> > 2020-05-07T13:02:28.702+0300 7f88d4ff9700 5*
> > >* librbd::io::ImageRequestWQ: 0x7f88e8001570 unblock_writes:
> 0x5569b5e1ffd0,*
> > >* num=0*
> > >* >> > 2020-05-07T13:02:28.702+0300 7f88d4ff9700 10
> librbd::ImageWatcher:*
> > >* 0x7f88c400dfe0 notify released lock*
> > >* >> > 2020-05-07T13:02:28.702+0300 7f88d4ff9700 10
> librbd::ImageWatcher:*
> > >* 0x7f88c400dfe0 current lock owner: [0,0]*
> > >* >> > 2020-05-07T13:02:28.702+0300 7f88d4ff9700 10
> librbd::ManagedLock:*
> > >* 0x7f88c4011bb8 handle_shutdown_post_release: r=0*
> > >* >> > 2020-05-07T13:02:28.702+0300 7f88d4ff9700 10
> librbd::ManagedLock:*
> > >* 0x7f88c4011bb8 wait_for_tracked_ops: r=0*
> > >* >> > 2020-05-07T13:02:28.702+0300 7f88d4ff9700 10
> librbd::ManagedLock:*
> > >* 0x7f88c4011bb8 complete_shutdown: r=0*
> > >* >> > 2020-05-07T13:02:28.702+0300 7f88d4ff9700 10*
> > >* librbd::image::CloseRequest: 0x7f88c8175fd0*
> > >* handle_shut_down_exclusive_lock: r=0*
> > >* >> > 2020-05-07T13:02:28.702+0300 7f88d4ff9700 10*
> > >* librbd::image::CloseRequest: 0x7f88c8175fd0
> send_unregister_image_watcher*
> > >* >> > 2020-05-07T13:02:28.702+0300 7f88d4ff9700 10
> librbd::ImageWatcher:*
> > >* 0x7f88c400dfe0 unregistering image watcher*
> > >* >> > 2020-05-07T13:02:28.702+0300 7f88d4ff9700 10 librbd::Watcher:*
> > >* 0x7f88c400dfe0 unregister_watch:*
> > >* >> > 2020-05-07T13:02:28.702+0300 7f88d57fa700 5 librbd::Watcher:*
> > >* 0x7f88c400dfe0 notifications_blocked: blocked=1*
> > >* >> > 2020-05-07T13:02:28.706+0300 7f88ceffd700 10*
> > >* librbd::image::CloseRequest: 0x7f88c8175fd0*
> > >* handle_unregister_image_watcher: r=0*
> > >* >> > 2020-05-07T13:02:28.706+0300 7f88ceffd700 10*
> > >* librbd::image::CloseRequest: 0x7f88c8175fd0 send_flush_readahead*
> > >* >> > 2020-05-07T13:02:28.706+0300 7f88d4ff9700 10*
> > >* librbd::image::CloseRequest: 0x7f88c8175fd0 handle_flush_readahead:
> r=0*
> > >* >> > 2020-05-07T13:02:28.706+0300 7f88d4ff9700 10*
> > >* librbd::image::CloseRequest: 0x7f88c8175fd0
> send_shut_down_object_dispatcher*
> > >* >> > 2020-05-07T13:02:28.706+0300 7f88d4ff9700 5*
> > >* librbd::io::ObjectDispatcher: 0x5569b5dab700 shut_down:*
> > >* >> > 2020-05-07T13:02:28.706+0300 7f88d4ff9700 5*
> > >* librbd::io::ObjectDispatch: 0x5569b5ee8360 shut_down:*
> > >* >> > 2020-05-07T13:02:28.706+0300 7f88d4ff9700 5*
> > >* librbd::io::SimpleSchedulerObjectDispatch: 0x7f88c4013ce0 shut_down:*
> > >* >> > 2020-05-07T13:02:28.706+0300 7f88d4ff9700 5*
> > >* librbd::cache::WriteAroundObjectDispatch: 0x7f88c8003780 shut_down:*
> > >* >> > 2020-05-07T13:02:28.706+0300 7f88d4ff9700 10*
> > >* librbd::image::CloseRequest: 0x7f88c8175fd0*
> > >* handle_shut_down_object_dispatcher: r=0*
> > >* >> > 2020-05-07T13:02:28.706+0300 7f88d4ff9700 10*
> > >* librbd::image::CloseRequest: 0x7f88c8175fd0 send_flush_op_work_queue*
> > >* >> > 2020-05-07T13:02:28.706+0300 7f88d4ff9700 10*
> > >* librbd::image::CloseRequest: 0x7f88c8175fd0
> handle_flush_op_work_queue: r=0*
> > >* >> > 2020-05-07T13:02:28.706+0300 7f88d4ff9700 10*
> > >* librbd::image::CloseRequest: 0x7f88c8175fd0
> handle_flush_image_watcher: r=0*
> > >* >> > 2020-05-07T13:02:28.706+0300 7f88d4ff9700 10 librbd::ImageState:*
> > >* 0x5569b5da9bb0 0x5569b5da9bb0 handle_close: r=0*
> > >* >> >*
> > >* >> > On Fri, May 8, 2020 at 12:40 AM Brad Hubbard <bhubbard@xxxxxxxxxx
> >*
> > >* wrote:*
> > >* >> >>*
> > >* >> >> On Fri, May 8, 2020 at 3:42 AM Erwin Lubbers <erwin@xxxxxxxxxxx
> >*
> > >* wrote:*
> > >* >> >> >*
> > >* >> >> > Hi,*
> > >* >> >> >*
> > >* >> >> > Did anyone found a way to resolve the problem? I'm seeing the
> same*
> > >* on a clean Octopus Ceph installation on Ubuntu 18 with an Octopus
> compiled*
> > >* KVM server running on CentOS 7.8. The KVM machine shows:*
> > >* >> >> >*
> > >* >> >> > [ 7682.233684] fn-radosclient[6060]: segfault at 2b19 ip*
> > >* 00007f8165cc0a50 sp 00007f81397f6490 error 4 in*
> > >* librbd.so.1.12.0[7f8165ab4000+537000]*
> > >* >> >>*
> > >* >> >> Are you able to either capture a backtrace from a coredump or
> set up*
> > >* >> >> logging and hopefully capture a backtrace that way?*
> > >* >> >>*
> > >* >> >> >*
> > >* >> >> > Ceph is healthy and stable for a few weeks and I did not get
> these*
> > >* messages while running on KVM compiled with Luminous libraries.*
> > >* >> >> >*
> > >* >> >> > Regards,*
> > >* >> >> > Erwin*
> > >* >> >> > _______________________________________________*
> > >* >> >> > ceph-users mailing list -- ceph-users@xxxxxxx*
> > >* >> >> > To unsubscribe send an email to ceph-users-leave@xxxxxxx*
> > >* >> >> >*
> > >* >> >>*
> > >* >> >>*
> > >* >> >> --*
> > >* >> >> Cheers,*
> > >* >> >> Brad*
> > >* >> >> _______________________________________________*
> > >* >> >> ceph-users mailing list -- ceph-users@xxxxxxx*
> > >* >> >> To unsubscribe send an email to ceph-users-leave@xxxxxxx*
> > >* >>*
> > >* >>*
> > >* >>*
> > >* >> --*
> > >* >> Cheers,*
> > >* >> Brad*
> > >* >>*
> > >
> > >
> > >* --*
> > >* Cheers,*
> > >* Brad*
> > _______________________________________________
> > ceph-users mailing list -- ceph-users@xxxxxxx
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> [1] https://shaman.ceph.com/repos/ceph/octopus/
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> --
> Jason
>
>
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