[sheepdog-users] [0.7-stable] SIGABRT when doing: dog vdi check
Marcin Mirosław
marcin at mejor.pl
Tue Jan 7 15:19:05 CET 2014
W dniu 07.01.2014 14:19, Hitoshi Mitake pisze:
> At Tue, 07 Jan 2014 10:45:33 +0100,
> Marcin Mirosław wrote:
>>
>> W dniu 07.01.2014 02:57, Hitoshi Mitake pisze:
>>> At Mon, 06 Jan 2014 11:41:16 +0900,
>>> Hitoshi Mitake wrote:
>>>>
>>>> At Sat, 4 Jan 2014 13:28:27 +0800,
>>>> Liu Yuan wrote:
>>>>>
>>>>> On Fri, Jan 03, 2014 at 10:51:26PM +0100, Marcin Mirosław wrote:
>>>>>> Hi!
>>>>>> I'm new on "sheep-run";) I'm starting to try sheepdog so probably I'm
>>>>>> doing many things wrongly.
>>>>>> I'm playing with sheepdog-0.7.6.
>>>>>>
>>>>>> First problem (SIGABRT):
>>>>>> I started multi sheep daemeon on localhost:
>>>>>> # for x in 0 1 2 3 4; do sheep -c local -j size=128M -p 700$x
>>>>>> /mnt/sheep/metadata/$x,/mnt/sheep/storage/$x; done
>>>>>>
>>>>>> Next:
>>>>>> # dog cluster info
>>>>>> Cluster status: Waiting for cluster to be formatted
>>>>>>
>>>>>> # dog cluster format -c 2:1
>>>>>
>>>>> 0.7.6 doesn't support erasure code. Try latest master branch
>>>>
>>>> Current stable-0.7 doesn't treat copy policies like "2:1" as an
>>>> error. It would be confusing for users. I'll write a patch only for
>>>> stable-0.7 for treating these options as errors.
>>>>
>>>>>
>>>>>> using backend plain store
>>>>>> # dog cluster info
>>>>>> Cluster status: running, auto-recovery enabled
>>>>>>
>>>>>> Cluster created at Fri Jan 3 20:33:43 2014
>>>>>>
>>>>>> Epoch Time Version
>>>>>> 2014-01-03 20:33:43 1 [127.0.0.1:7000, 127.0.0.1:7001,
>>>>>> 127.0.0.1:7002, 127.0.0.1:7003, 127.0.0.1:7004]
>>>>>> # dog vdi create testowy 5G
>>>>>> # gdb -q dog
>>>>>> Reading symbols from /usr/sbin/dog...Reading symbols from
>>>>>> /usr/lib64/debug/usr/sbin/dog.debug...done.
>>>>>> done.
>>>>>> (gdb) set args vdi check testowy
>>>>>> (gdb) run
>>>>>> Starting program: /usr/sbin/dog vdi check testowy
>>>>>> warning: Could not load shared library symbols for linux-vdso.so.1.
>>>>>> Do you need "set solib-search-path" or "set sysroot"?
>>>>>> warning: File "/lib64/libthread_db-1.0.so" auto-loading has been
>>>>>> declined by your `auto-load safe-path' set to
>>>>>> "$debugdir:$datadir/auto-load".
>>>>>> To enable execution of this file add
>>>>>> add-auto-load-safe-path /lib64/libthread_db-1.0.so
>>>>>> line to your configuration file "/root/.gdbinit".
>>>>>> To completely disable this security protection add
>>>>>> set auto-load safe-path /
>>>>>> line to your configuration file "/root/.gdbinit".
>>>>>> For more information about this security protection see the
>>>>>> "Auto-loading safe path" section in the GDB manual. E.g., run from the
>>>>>> shell:
>>>>>> info "(gdb)Auto-loading safe path"
>>>>>> warning: Unable to find libthread_db matching inferior's thread library,
>>>>>> thread debugging will not be available.
>>>>>> PANIC: can't find next new idx
>>>>>
>>>>> seems that 0.7.x series is cracky about it. Hitoshi, can you verify
>>>>> this?
>>>>
>>>> OK, I'll dig in the problem soon.
>>>
>>> Hi Marcin,
>>>
>>> I've fixed a serious bug which might produce the bug you've
>>> suffered. The commit is this:
>>> https://github.com/sheepdog/sheepdog/commit/b82632b47978315a50e9ba0bbad59f56453f63f5
>>>
>>> The patch is already backported to stable-0.7. Could you try the
>>> latest stable-0.7? You can obtain the source code by the below step:
>>>
>>> git clone https://github.com/sheepdog/sheepdog.git
>>> cd sheepdog
>>> git checkout -b 0.7 origin/stable-0.7
>>>
>>> But the problem might depend on timing heavily. So reproducing the
>>> problem will be not so easy... If you have time, I'd like you to try
>>> the latest change.
>>
>> Hi all!
>> Today I'm trying sheepdog on other computer and don;t have any problem
>> to reproduce SIGABRT. I tried latest 0.7 stable (at 9de5329978) and "dog
>> vdi check testowy" still crashes:
>> # dog vdi check testowy
>> PANIC: can't find next new idx
>> dog exits unexpectedly (Aborted).
>> dog() [0x40536a]
>> /lib64/libpthread.so.0(+0xfd8f) [0x7f90aec31d8f]
>> /lib64/libc.so.6(gsignal+0x38) [0x7f90ae8b2368]
>> /lib64/libc.so.6(abort+0x147) [0x7f90ae8b36c7]
>> dog() [0x40893a]
>> dog() [0x40a3d9]
>> dog() [0x40363e]
>> /lib64/libc.so.6(__libc_start_main+0xf4) [0x7f90ae89ec04]
>> dog() [0x4038a8]
>> #7 0x000000000040faa5 in sd_backtrace () at logger.c:914
>>
>> addrs = {0x40f95d <sd_backtrace+29>, 0x40536b <crash_handler+43>,
>> 0x7f90aec31d90 <__restore_rt>, 0x7f90ae8b2369 <__GI_raise+57>,
>> 0x7f90ae8b36c8 <__GI_abort+328>, 0x40893b, 0x40a3da <vdi_check+186>,
>> 0x40363f <main+1055>, 0x7f90ae89ec05 <__libc_start_main+2
>> 45>, 0x4038a9 <_start+41>, 0x0 <repeats 1014 times>}
>>
>> i = <optimized out>
>>
>> n = <optimized out>
>>
>> __func__ = "sd_backtrace"
>>
>> #8 0x000000000040536b in crash_handler (signo=6) at dog.c:330
>>
>> __func__ = "crash_handler"
>>
>> #9 <signal handler called>
>>
>> No locals.
>>
>> #10 0x00007f90ae8b2369 in __GI_raise (sig=sig at entry=6) at
>> ../nptl/sysdeps/unix/sysv/linux/raise.c:56
>>
>> resultvar = 0
>>
>> pid = 21938
>>
>> selftid = 21938
>>
>> #11 0x00007f90ae8b36c8 in __GI_abort () at abort.c:90
>>
>> save_stage = 2
>>
>> act = {__sigaction_handler = {sa_handler = 0x2, sa_sigaction = 0x2},
>> sa_mask = {__val = {29029392, 102, 140259386245127, 5, 0, 208,
>> 140259380182888, 0, 102, 320, 140259386270773, 0, 140259383961520, 0,
>> 140259383961520, 140259383955552}}, sa_flags = -13587
>> 68064, sa_restorer = 0x7f90ae9a3e80 <__memcpy_ssse3+9600>}
>>
>> sigs = {__val = {32, 0 <repeats 15 times>}}
>>
>> #12 0x000000000040893b in get_vnode_next_idx (nr_prev_idxs=<optimized
>> out>, prev_idxs=<optimized out>, nr_entries=<optimized out>,
>> entries=<optimized out>) at ../include/sheep.h:105
>>
>> i = <optimized out>
>>
>> idx = <optimized out>
>>
>> first_idx = <optimized out>
>>
>> found = <optimized out>
>>
>> #13 oid_to_vnodes (vnodes=0x7fffaefac8c0, nr_copies=2, oid=<optimized
>> out>, nr_entries=320, entries=<optimized out>) at ../include/sheep.h:174
>>
>> idxs = {102, 0, 29029184, 0, 1, 0, 29029264, 0}
>>
>> i = <optimized out>
>>
>> vnodes = 0x7fffaefac8c0
>>
>> nr_copies = 2
>>
>> oid = <optimized out>
>>
>> nr_entries = 320
>>
>> #14 queue_vdi_check_work (oid=<optimized out>, done=done at entry=0x0,
>> wq=wq at entry=0x1baf410, inode=0x7f90adc77010, inode=0x7f90adc77010) at
>> vdi.c:1600
>>
>> info = 0x1baf580
>>
>> tgt_vnodes = {0xc2fd70 <sd_vnodes+5712>, 0x1baf3b8, 0x7f90adc77010,
>> 0x414348 <create_worker_threads+104>, 0x7fffaefae207, 0x7f90adc76700,
>> 0x1baf340, 0x1baf390}
>>
>> nr_copies = 2
>>
>> #15 0x000000000040a3da in vdi_check (argc=<optimized out>,
>> argv=<optimized out>) at vdi.c:1634
>>
>> vdiname = 0x7fffaefae207 "testowy"
>>
>> ret = 0
>>
>> max_idx = <optimized out>
>>
>> done = 0
>>
>> vid = 13289526
>>
>> inode = 0x7f90adc77010
>>
>> wq = 0x1baf410
>>
>> __func__ = "vdi_check"
>>
>> #16 0x000000000040363f in main (argc=<optimized out>,
>> argv=0x7fffaefacad8) at dog.c:494
>>
>> ch = <optimized out>
>>
>> longindex = 0
>>
>> ret = <optimized out>
>>
>> flags = 2
>>
>> long_options = 0xc2c560 <lopts.2390>
>>
>> commands = 0x1ba3010
>>
>> short_options = 0xc2e580 <sopts.2381"s:a:p:h"
>>
>> p = 0x41594d
>> <__libc_csu_init+77"H\203\303\001H9\353u\352H\203\304\b[]A\\A]A^A_\303ff.\017\037\204"
>>
>> __func__ = "main"
>>
>>
>> Additionally I'm getting QA Notice from portage:
>> * QA Notice: Package triggers severe warnings which indicate that it
>> * may exhibit random runtime failures.
>> * group.c:348:45: warning: argument to ‘sizeof’ in ‘memcpy’ call is the
>> same expression as the destination; did you mean to dereference it?
>> [-Wsizeof-pointer-memaccess]
>>
>>
>>
>> Today it's gcc-4.8.2, but I tested with clang and it nothing changed.
>> I'm configuring sheepdog using:
>> # configure --prefix=/usr --build=x86_64-pc-linux-gnu
>> --host=x86_64-pc-linux-gnu --mandir=/usr/share/man
>> --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc
>> --localstatedir=/var/lib --libdir=/usr/lib64 --disable-silent-rules
>> --disable-dependency-tracking --docdir=/usr/share/doc/sheepdog-0.7.9999
>> --disable-corosync --enable-sheepfs
>>
>> Dir "/mnt/sheep" is placed on one partition (I know this is slow but
>> speed isn't important for me at this moment).
>> If I can do something more to help please let me know.
>
> Thanks a lot for your testing and detailed report, Marcin.
>
> I backported an important patch for the above problem. Could you try
> the latest stable-0.7?
>
> BTW, it depends on sizeof(time_t). Could you try the below program on
> your environment?
>
> #include <stdio.h>
> #include <time.h>
>
> int main(void)
> {
> printf("sizeof(time_t): %lu\n", sizeof(time_t));
> printf("sizeof(time_t *): %lu\n", sizeof(time_t *));
> return 0;
> }
>
> If the sizes are different, the patch would fix the problem.
Sizes are the same:
sizeof(time_t): 8
sizeof(time_t *): 8
I've tested sheepddog on commit 984afc61c16e69 and it's better:) :
# dog vdi check testowy
failed to connect to 0:0:7f00:1:591b:::0: Network is unreachable
failed to connect to 0:0:7f00:1:591b:::0: Network is unreachable
13.6 % [==================>
] 696 MB / 5.0 GB failed to connect to 5b1b:::0: Network is unreachable
/ # ============================================>
So SIGABRT didn't appear, only terminal was polluted in this test;)
I run once again with defined address ip:
# dog vdi check -a 127.0.0.1 testowy
48.8 %
[==================================================================>
] 2.4
GB / 5.0 GB failed to connect to 5b1b:::0: Network is unreachable
failed to connect to 5b1b:::0: Network is unreachable
48.8 %
[==================================================================>
] 2.4
GB / 5.0 GB failed to connect to 0:0:7f00:1:591b:::0: Network is
unreachable
failed to connect to 0:0:7f00:1:591b:::0: Network is unreachable
Don't know why dog wants connect to ipv6.
Marcin
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