* [Drbd-dev] Bug in latest 8.4-git @ 2014-10-03 19:33 Igor Novgorodov 2014-10-06 15:34 ` Lars Ellenberg 0 siblings, 1 reply; 5+ messages in thread From: Igor Novgorodov @ 2014-10-03 19:33 UTC (permalink / raw) To: drbd-dev Hello! Just checked out latest rev of git tree and built it against latest LTS vanilla kernel - 3.14.19 And the problem is that it won't connect to the peer server (it's drbd 8.4.3 and kernel 3.4.42) at all with "listen failed, err = -515" error. Replication link is 4x1G balance-rr bond which worked fine for years, if that's relevant. IPv6 is disabled in kernel completely. I've fallen back to 8.4.5 stable release and it all worked fine again. The thing is that last time i've checked out git version around July 2014 - it worked fine too, something broke later. Kernel log of the connection follows, glad to get any help or answer any questions: [ 987.195779] drbd: failed to initialize debugfs -- will not be available [ 987.195875] drbd: initialized. Version: 8.4.5 (api:1/proto:86-101) [ 987.195946] drbd: GIT-hash: ca3a67af3823b85614621a4cf95e191c5820c0eb build by root@debian-service, 2014-10-03 21:23:28 [ 987.196039] drbd: registered as block device major 147 [ 987.243928] drbd VM_STORAGE2_1: Starting worker thread (from drbdsetup-84 [7574]) [ 987.244564] block drbd0: disk( Diskless -> Attaching ) [ 987.245006] drbd VM_STORAGE2_1: Method to ensure write ordering: drain [ 987.245080] block drbd0: max BIO size = 286720 [ 987.245151] block drbd0: Adjusting my ra_pages to backing device's (32 -> 70) [ 987.245227] block drbd0: drbd_bm_resize called with capacity == 23436772800 [ 987.309127] block drbd0: resync bitmap: bits=2929596600 words=45774947 pages=89405 [ 987.309223] block drbd0: size = 11 TB (11718386400 KB) [ 988.983804] block drbd0: recounting of set bits took additional 8 jiffies [ 988.983884] block drbd0: 0 KB (0 bits) marked out-of-sync by on disk bit-map. [ 988.983964] block drbd0: disk( Attaching -> UpToDate ) [ 988.984048] block drbd0: attached to UUIDs 6BCB7D550A1E86DE:0000000000000000:22A0154CECB25AF2:229F154CECB25AF3 [ 989.016875] drbd VM_STORAGE2_2: Starting worker thread (from drbdsetup-84 [7580]) [ 989.017381] block drbd1: disk( Diskless -> Attaching ) [ 989.017842] drbd VM_STORAGE2_2: Method to ensure write ordering: drain [ 989.017919] block drbd1: max BIO size = 286720 [ 989.017990] block drbd1: Adjusting my ra_pages to backing device's (32 -> 70) [ 989.018066] block drbd1: drbd_bm_resize called with capacity == 17577578552 [ 989.065815] block drbd1: resync bitmap: bits=2197197319 words=34331209 pages=67054 [ 989.065908] block drbd1: size = 8382 GB (8788789276 KB) [ 990.280610] block drbd1: recounting of set bits took additional 5 jiffies [ 990.280690] block drbd1: 0 KB (0 bits) marked out-of-sync by on disk bit-map. [ 990.280771] block drbd1: disk( Attaching -> UpToDate ) [ 990.280855] block drbd1: attached to UUIDs 7869022EE30A1DDC:0000000000000000:BEFCB1DA3C794170:BEFBB1DA3C794171 [ 990.282283] drbd VM_STORAGE2_1: conn( StandAlone -> Unconnected ) [ 990.282382] drbd VM_STORAGE2_1: Starting receiver thread (from drbd_w_VM_STORA [7575]) [ 990.282590] drbd VM_STORAGE2_1: receiver (re)started [ 990.282698] drbd VM_STORAGE2_1: conn( Unconnected -> WFConnection ) [ 990.282788] drbd VM_STORAGE2_1: listen failed, err = -515 [ 990.282888] drbd VM_STORAGE2_1: conn( WFConnection -> Disconnecting ) [ 990.283287] drbd VM_STORAGE2_1: Connection closed [ 990.283307] drbd VM_STORAGE2_2: conn( StandAlone -> Unconnected ) [ 990.283349] drbd VM_STORAGE2_2: Starting receiver thread (from drbd_w_VM_STORA [7581]) [ 990.283461] drbd VM_STORAGE2_2: receiver (re)started [ 990.283500] drbd VM_STORAGE2_2: conn( Unconnected -> WFConnection ) [ 990.283515] drbd VM_STORAGE2_2: listen failed, err = -515 [ 990.283542] drbd VM_STORAGE2_2: conn( WFConnection -> Disconnecting ) [ 990.283580] drbd VM_STORAGE2_2: Connection closed [ 990.283611] drbd VM_STORAGE2_2: conn( Disconnecting -> StandAlone ) [ 990.283975] drbd VM_STORAGE2_1: conn( Disconnecting -> StandAlone ) [ 991.282537] drbd VM_STORAGE2_1: State change failed: Need a connection to start verify or resync [ 991.282540] drbd VM_STORAGE2_2: State change failed: Need a connection to start verify or resync [ 991.282541] drbd VM_STORAGE2_2: mask = 0x1f0 val = 0x80 [ 991.282544] drbd VM_STORAGE2_2: old_conn:StandAlone wanted_conn:WFConnection [ 991.282545] drbd VM_STORAGE2_2: receiver terminated [ 991.282546] drbd VM_STORAGE2_2: Terminating drbd_r_VM_STORA [ 991.283005] drbd VM_STORAGE2_1: mask = 0x1f0 val = 0x80 [ 991.283076] drbd VM_STORAGE2_1: old_conn:StandAlone wanted_conn:WFConnection [ 991.283149] drbd VM_STORAGE2_1: receiver terminated [ 991.283220] drbd VM_STORAGE2_1: Terminating drbd_r_VM_STORA ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Drbd-dev] Bug in latest 8.4-git 2014-10-03 19:33 [Drbd-dev] Bug in latest 8.4-git Igor Novgorodov @ 2014-10-06 15:34 ` Lars Ellenberg 2014-10-06 16:21 ` Igor Novgorodov 0 siblings, 1 reply; 5+ messages in thread From: Lars Ellenberg @ 2014-10-06 15:34 UTC (permalink / raw) To: drbd-dev On Fri, Oct 03, 2014 at 11:33:44PM +0400, Igor Novgorodov wrote: > Hello! > > Just checked out latest rev of git tree and built it against latest > LTS vanilla kernel - 3.14.19 > > And the problem is that it won't connect to the peer server (it's > drbd 8.4.3 and kernel 3.4.42) at all > with "listen failed, err = -515" error. Replication link is 4x1G > balance-rr bond which worked fine > for years, if that's relevant. IPv6 is disabled in kernel completely. Then why are you trying git checkouts on it... > I've fallen back to 8.4.5 stable release and it all worked fine again. Great. As long as the released code works ;-) > The thing is that last time i've checked out git version around July > 2014 - it worked fine too, > something broke later. Thanks for reporting anyways. That way we may be able to figure out what's wrong before the next release. errno -515 is "ENOIOCTLCMD" according to my kernel sources. Not sure why listen would report that? > Kernel log of the connection follows, glad to get any help or answer > any questions: > > [ 987.195779] drbd: failed to initialize debugfs -- will not be available > [ 987.195875] drbd: initialized. Version: 8.4.5 (api:1/proto:86-101) > [ 987.195946] drbd: GIT-hash: > ca3a67af3823b85614621a4cf95e191c5820c0eb build by > root@debian-service, 2014-10-03 21:23:28 > [ 987.196039] drbd: registered as block device major 147 > [ 987.243928] drbd VM_STORAGE2_1: Starting worker thread (from > drbdsetup-84 [7574]) > [ 987.244564] block drbd0: disk( Diskless -> Attaching ) > [ 987.245006] drbd VM_STORAGE2_1: Method to ensure write ordering: drain > [ 987.245080] block drbd0: max BIO size = 286720 > [ 987.245151] block drbd0: Adjusting my ra_pages to backing > device's (32 -> 70) > [ 987.245227] block drbd0: drbd_bm_resize called with capacity == > 23436772800 > [ 987.309127] block drbd0: resync bitmap: bits=2929596600 > words=45774947 pages=89405 > [ 987.309223] block drbd0: size = 11 TB (11718386400 KB) > [ 988.983804] block drbd0: recounting of set bits took additional 8 jiffies > [ 988.983884] block drbd0: 0 KB (0 bits) marked out-of-sync by on > disk bit-map. > [ 988.983964] block drbd0: disk( Attaching -> UpToDate ) > [ 988.984048] block drbd0: attached to UUIDs > 6BCB7D550A1E86DE:0000000000000000:22A0154CECB25AF2:229F154CECB25AF3 > [ 989.016875] drbd VM_STORAGE2_2: Starting worker thread (from > drbdsetup-84 [7580]) > [ 989.017381] block drbd1: disk( Diskless -> Attaching ) > [ 989.017842] drbd VM_STORAGE2_2: Method to ensure write ordering: drain > [ 989.017919] block drbd1: max BIO size = 286720 > [ 989.017990] block drbd1: Adjusting my ra_pages to backing > device's (32 -> 70) > [ 989.018066] block drbd1: drbd_bm_resize called with capacity == > 17577578552 > [ 989.065815] block drbd1: resync bitmap: bits=2197197319 > words=34331209 pages=67054 > [ 989.065908] block drbd1: size = 8382 GB (8788789276 KB) > [ 990.280610] block drbd1: recounting of set bits took additional 5 jiffies > [ 990.280690] block drbd1: 0 KB (0 bits) marked out-of-sync by on > disk bit-map. > [ 990.280771] block drbd1: disk( Attaching -> UpToDate ) > [ 990.280855] block drbd1: attached to UUIDs > 7869022EE30A1DDC:0000000000000000:BEFCB1DA3C794170:BEFBB1DA3C794171 > [ 990.282283] drbd VM_STORAGE2_1: conn( StandAlone -> Unconnected ) > [ 990.282382] drbd VM_STORAGE2_1: Starting receiver thread (from > drbd_w_VM_STORA [7575]) > [ 990.282590] drbd VM_STORAGE2_1: receiver (re)started > [ 990.282698] drbd VM_STORAGE2_1: conn( Unconnected -> WFConnection ) > [ 990.282788] drbd VM_STORAGE2_1: listen failed, err = -515 > [ 990.282888] drbd VM_STORAGE2_1: conn( WFConnection -> Disconnecting ) > [ 990.283287] drbd VM_STORAGE2_1: Connection closed > [ 990.283307] drbd VM_STORAGE2_2: conn( StandAlone -> Unconnected ) > [ 990.283349] drbd VM_STORAGE2_2: Starting receiver thread (from > drbd_w_VM_STORA [7581]) > [ 990.283461] drbd VM_STORAGE2_2: receiver (re)started > [ 990.283500] drbd VM_STORAGE2_2: conn( Unconnected -> WFConnection ) > [ 990.283515] drbd VM_STORAGE2_2: listen failed, err = -515 > [ 990.283542] drbd VM_STORAGE2_2: conn( WFConnection -> Disconnecting ) > [ 990.283580] drbd VM_STORAGE2_2: Connection closed > [ 990.283611] drbd VM_STORAGE2_2: conn( Disconnecting -> StandAlone ) > [ 990.283975] drbd VM_STORAGE2_1: conn( Disconnecting -> StandAlone ) > [ 991.282537] drbd VM_STORAGE2_1: State change failed: Need a > connection to start verify or resync > [ 991.282540] drbd VM_STORAGE2_2: State change failed: Need a > connection to start verify or resync > [ 991.282541] drbd VM_STORAGE2_2: mask = 0x1f0 val = 0x80 > [ 991.282544] drbd VM_STORAGE2_2: old_conn:StandAlone > wanted_conn:WFConnection > [ 991.282545] drbd VM_STORAGE2_2: receiver terminated > [ 991.282546] drbd VM_STORAGE2_2: Terminating drbd_r_VM_STORA > [ 991.283005] drbd VM_STORAGE2_1: mask = 0x1f0 val = 0x80 > [ 991.283076] drbd VM_STORAGE2_1: old_conn:StandAlone > wanted_conn:WFConnection > [ 991.283149] drbd VM_STORAGE2_1: receiver terminated > [ 991.283220] drbd VM_STORAGE2_1: Terminating drbd_r_VM_STORA -- : Lars Ellenberg : LINBIT | Your Way to High Availability : DRBD/HA support and consulting http://www.linbit.com DRBD® and LINBIT® are registered trademarks of LINBIT, Austria. ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Drbd-dev] Bug in latest 8.4-git 2014-10-06 15:34 ` Lars Ellenberg @ 2014-10-06 16:21 ` Igor Novgorodov 2014-10-08 9:37 ` Lars Ellenberg 0 siblings, 1 reply; 5+ messages in thread From: Igor Novgorodov @ 2014-10-06 16:21 UTC (permalink / raw) To: drbd-dev I didn't found any bugtracker for DRBD project, so i reported the bug here. ENOIOCTLCMD is returned in several places in net/socket.c and net/ipv4/tcp.c, it seems to have something to do with 32-bit code emulation on 64-bit kernel: #ifdef CONFIG_COMPAT static int inet_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) { struct sock *sk = sock->sk; int err = -ENOIOCTLCMD; if (sk->sk_prot->compat_ioctl) err = sk->sk_prot->compat_ioctl(sk, cmd, arg); return err; } #endif CONFIG_COMPAT is only defined if 32-bit emulation is enabled in kernel. I've just rebuilt kernel with CONFIG_X86_X32 and drbd-8.4-git started to work fine, so the problem is there, somewhere in 64/32 compatibility layer :) On 06.10.2014 19:34, Lars Ellenberg wrote: > On Fri, Oct 03, 2014 at 11:33:44PM +0400, Igor Novgorodov wrote: >> Hello! >> >> Just checked out latest rev of git tree and built it against latest >> LTS vanilla kernel - 3.14.19 >> >> And the problem is that it won't connect to the peer server (it's >> drbd 8.4.3 and kernel 3.4.42) at all >> with "listen failed, err = -515" error. Replication link is 4x1G >> balance-rr bond which worked fine >> for years, if that's relevant. IPv6 is disabled in kernel completely. > Then why are you trying git checkouts on it... > >> I've fallen back to 8.4.5 stable release and it all worked fine again. > Great. As long as the released code works ;-) > >> The thing is that last time i've checked out git version around July >> 2014 - it worked fine too, >> something broke later. > Thanks for reporting anyways. That way we may be able to figure out > what's wrong before the next release. > > errno -515 is "ENOIOCTLCMD" according to my kernel sources. > Not sure why listen would report that? > >> Kernel log of the connection follows, glad to get any help or answer >> any questions: >> >> [ 987.195779] drbd: failed to initialize debugfs -- will not be available >> [ 987.195875] drbd: initialized. Version: 8.4.5 (api:1/proto:86-101) >> [ 987.195946] drbd: GIT-hash: >> ca3a67af3823b85614621a4cf95e191c5820c0eb build by >> root@debian-service, 2014-10-03 21:23:28 >> [ 987.196039] drbd: registered as block device major 147 >> [ 987.243928] drbd VM_STORAGE2_1: Starting worker thread (from >> drbdsetup-84 [7574]) >> [ 987.244564] block drbd0: disk( Diskless -> Attaching ) >> [ 987.245006] drbd VM_STORAGE2_1: Method to ensure write ordering: drain >> [ 987.245080] block drbd0: max BIO size = 286720 >> [ 987.245151] block drbd0: Adjusting my ra_pages to backing >> device's (32 -> 70) >> [ 987.245227] block drbd0: drbd_bm_resize called with capacity == >> 23436772800 >> [ 987.309127] block drbd0: resync bitmap: bits=2929596600 >> words=45774947 pages=89405 >> [ 987.309223] block drbd0: size = 11 TB (11718386400 KB) >> [ 988.983804] block drbd0: recounting of set bits took additional 8 jiffies >> [ 988.983884] block drbd0: 0 KB (0 bits) marked out-of-sync by on >> disk bit-map. >> [ 988.983964] block drbd0: disk( Attaching -> UpToDate ) >> [ 988.984048] block drbd0: attached to UUIDs >> 6BCB7D550A1E86DE:0000000000000000:22A0154CECB25AF2:229F154CECB25AF3 >> [ 989.016875] drbd VM_STORAGE2_2: Starting worker thread (from >> drbdsetup-84 [7580]) >> [ 989.017381] block drbd1: disk( Diskless -> Attaching ) >> [ 989.017842] drbd VM_STORAGE2_2: Method to ensure write ordering: drain >> [ 989.017919] block drbd1: max BIO size = 286720 >> [ 989.017990] block drbd1: Adjusting my ra_pages to backing >> device's (32 -> 70) >> [ 989.018066] block drbd1: drbd_bm_resize called with capacity == >> 17577578552 >> [ 989.065815] block drbd1: resync bitmap: bits=2197197319 >> words=34331209 pages=67054 >> [ 989.065908] block drbd1: size = 8382 GB (8788789276 KB) >> [ 990.280610] block drbd1: recounting of set bits took additional 5 jiffies >> [ 990.280690] block drbd1: 0 KB (0 bits) marked out-of-sync by on >> disk bit-map. >> [ 990.280771] block drbd1: disk( Attaching -> UpToDate ) >> [ 990.280855] block drbd1: attached to UUIDs >> 7869022EE30A1DDC:0000000000000000:BEFCB1DA3C794170:BEFBB1DA3C794171 >> [ 990.282283] drbd VM_STORAGE2_1: conn( StandAlone -> Unconnected ) >> [ 990.282382] drbd VM_STORAGE2_1: Starting receiver thread (from >> drbd_w_VM_STORA [7575]) >> [ 990.282590] drbd VM_STORAGE2_1: receiver (re)started >> [ 990.282698] drbd VM_STORAGE2_1: conn( Unconnected -> WFConnection ) >> [ 990.282788] drbd VM_STORAGE2_1: listen failed, err = -515 >> [ 990.282888] drbd VM_STORAGE2_1: conn( WFConnection -> Disconnecting ) >> [ 990.283287] drbd VM_STORAGE2_1: Connection closed >> [ 990.283307] drbd VM_STORAGE2_2: conn( StandAlone -> Unconnected ) >> [ 990.283349] drbd VM_STORAGE2_2: Starting receiver thread (from >> drbd_w_VM_STORA [7581]) >> [ 990.283461] drbd VM_STORAGE2_2: receiver (re)started >> [ 990.283500] drbd VM_STORAGE2_2: conn( Unconnected -> WFConnection ) >> [ 990.283515] drbd VM_STORAGE2_2: listen failed, err = -515 >> [ 990.283542] drbd VM_STORAGE2_2: conn( WFConnection -> Disconnecting ) >> [ 990.283580] drbd VM_STORAGE2_2: Connection closed >> [ 990.283611] drbd VM_STORAGE2_2: conn( Disconnecting -> StandAlone ) >> [ 990.283975] drbd VM_STORAGE2_1: conn( Disconnecting -> StandAlone ) >> [ 991.282537] drbd VM_STORAGE2_1: State change failed: Need a >> connection to start verify or resync >> [ 991.282540] drbd VM_STORAGE2_2: State change failed: Need a >> connection to start verify or resync >> [ 991.282541] drbd VM_STORAGE2_2: mask = 0x1f0 val = 0x80 >> [ 991.282544] drbd VM_STORAGE2_2: old_conn:StandAlone >> wanted_conn:WFConnection >> [ 991.282545] drbd VM_STORAGE2_2: receiver terminated >> [ 991.282546] drbd VM_STORAGE2_2: Terminating drbd_r_VM_STORA >> [ 991.283005] drbd VM_STORAGE2_1: mask = 0x1f0 val = 0x80 >> [ 991.283076] drbd VM_STORAGE2_1: old_conn:StandAlone >> wanted_conn:WFConnection >> [ 991.283149] drbd VM_STORAGE2_1: receiver terminated >> [ 991.283220] drbd VM_STORAGE2_1: Terminating drbd_r_VM_STORA ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Drbd-dev] Bug in latest 8.4-git 2014-10-06 16:21 ` Igor Novgorodov @ 2014-10-08 9:37 ` Lars Ellenberg 2014-10-08 10:31 ` Igor Novgorodov 0 siblings, 1 reply; 5+ messages in thread From: Lars Ellenberg @ 2014-10-08 9:37 UTC (permalink / raw) To: drbd-dev On Mon, Oct 06, 2014 at 08:21:15PM +0400, Igor Novgorodov wrote: > I didn't found any bugtracker for DRBD project, so i reported the bug here. Right thing to do. Thank you. > ENOIOCTLCMD is returned in several places in net/socket.c and > net/ipv4/tcp.c, > it seems to have something to do with 32-bit code emulation on > 64-bit kernel: > > #ifdef CONFIG_COMPAT > static int inet_compat_ioctl(struct socket *sock, unsigned int cmd, > unsigned long arg) > { > struct sock *sk = sock->sk; > int err = -ENOIOCTLCMD; > > if (sk->sk_prot->compat_ioctl) > err = sk->sk_prot->compat_ioctl(sk, cmd, arg); > > return err; > } > #endif > > CONFIG_COMPAT is only defined if 32-bit emulation is enabled in kernel. > > I've just rebuilt kernel with CONFIG_X86_X32 and drbd-8.4-git > started to work fine, > so the problem is there, somewhere in 64/32 compatibility layer :) Uh? That is ... unexpected. ->listen() should do any ioctls, though? and there is just kernel code talking to kernel code, so why would CONFIG_X86_X32 matter at all? Can you double check, please: Is that reproducible, i.e., if you swich that CONFIG off again, the error comes back? (does not reproduce here... yet) Lars ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [Drbd-dev] Bug in latest 8.4-git 2014-10-08 9:37 ` Lars Ellenberg @ 2014-10-08 10:31 ` Igor Novgorodov 0 siblings, 0 replies; 5+ messages in thread From: Igor Novgorodov @ 2014-10-08 10:31 UTC (permalink / raw) To: drbd-dev On 08.10.2014 13:37, Lars Ellenberg wrote: > On Mon, Oct 06, 2014 at 08:21:15PM +0400, Igor Novgorodov wrote: >> I didn't found any bugtracker for DRBD project, so i reported the bug here. > Right thing to do. Thank you. > >> ENOIOCTLCMD is returned in several places in net/socket.c and >> net/ipv4/tcp.c, >> it seems to have something to do with 32-bit code emulation on >> 64-bit kernel: >> >> #ifdef CONFIG_COMPAT >> static int inet_compat_ioctl(struct socket *sock, unsigned int cmd, >> unsigned long arg) >> { >> struct sock *sk = sock->sk; >> int err = -ENOIOCTLCMD; >> >> if (sk->sk_prot->compat_ioctl) >> err = sk->sk_prot->compat_ioctl(sk, cmd, arg); >> >> return err; >> } >> #endif >> >> CONFIG_COMPAT is only defined if 32-bit emulation is enabled in kernel. >> >> I've just rebuilt kernel with CONFIG_X86_X32 and drbd-8.4-git >> started to work fine, >> so the problem is there, somewhere in 64/32 compatibility layer :) > Uh? > That is ... unexpected. > > ->listen() should do any ioctls, though? > and there is just kernel code talking to kernel code, > so why would CONFIG_X86_X32 matter at all? > > Can you double check, please: > Is that reproducible, i.e., if you swich that CONFIG off again, > the error comes back? > > (does not reproduce here... yet) You're right, something's odd here. I've rebuilt the same git version 8.4 ca3a67af3823b85614621a4cf95e191c5820c0eb with the very same kernel 3.14.19 with CONFIG_IA32_EMULATION unset, and DRBD started to work without a problem, no listen errors. I used the same kernel & drbd sources, same config, nothing has changed since. Maybe there was some bug on my build machine... Thanks anyway, and sorry for disturbing, if anything like that should come up again, i'll report. > Lars > > _______________________________________________ > drbd-dev mailing list > drbd-dev@lists.linbit.com > http://lists.linbit.com/mailman/listinfo/drbd-dev ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2014-10-08 10:31 UTC | newest] Thread overview: 5+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2014-10-03 19:33 [Drbd-dev] Bug in latest 8.4-git Igor Novgorodov 2014-10-06 15:34 ` Lars Ellenberg 2014-10-06 16:21 ` Igor Novgorodov 2014-10-08 9:37 ` Lars Ellenberg 2014-10-08 10:31 ` Igor Novgorodov
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