<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Sep 4, 2017 at 5:28 PM, Serkan Çoban <span dir="ltr"><<a href="mailto:cobanserkan@gmail.com" target="_blank">cobanserkan@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">>1. On 80 nodes cluster, did you reboot only one node or multiple ones?<br>
</span>Tried both, result is same, but the logs/stacks are from stopping and<br>
starting glusterd only on one server while others are running.<br>
<span class=""><br>
>2. Are you sure that pstack output was always constantly pointing on strcmp being stuck?<br>
</span>It stays 70-80 minutes in %100 cpu consuming state, the stacks I send<br>
is from first 5-10 minutes. I will capture stack traces with 10<br>
minutes waits and send them to you tomorrow. Also with 40 servers It<br>
stays that way for 5 minutes and then returns to normal.<br>
<span class=""><br>
>3. Are you absolutely sure even after few hours glusterd is stuck at the same point?<br>
</span>It goes to normal state after 70-80 minutes and I can run cluster<br>
commands after that. I will check this again to be sure..<br></blockquote><div><br></div><div>So this is scalability issue you're hitting with current glusterd's design. As I mentioned earlier, peer handshaking can be a really costly operations based on you scale the cluster and hence you might experience a huge delay in the node bringing up all the services and be operational.</div><div><br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="HOEnZb"><div class="h5"><br>
On Mon, Sep 4, 2017 at 1:43 PM, Atin Mukherjee <<a href="mailto:amukherj@redhat.com">amukherj@redhat.com</a>> wrote:<br>
><br>
><br>
> On Fri, Sep 1, 2017 at 8:47 AM, Milind Changire <<a href="mailto:mchangir@redhat.com">mchangir@redhat.com</a>> wrote:<br>
>><br>
>> Serkan,<br>
>> I have gone through other mails in the mail thread as well but responding<br>
>> to this one specifically.<br>
>><br>
>> Is this a source install or an RPM install ?<br>
>> If this is an RPM install, could you please install the<br>
>> glusterfs-debuginfo RPM and retry to capture the gdb backtrace.<br>
>><br>
>> If this is a source install, then you'll need to configure the build with<br>
>> --enable-debug and reinstall and retry capturing the gdb backtrace.<br>
>><br>
>> Having the debuginfo package or a debug build helps to resolve the<br>
>> function names and/or line numbers.<br>
>> --<br>
>> Milind<br>
>><br>
>><br>
>><br>
>> On Thu, Aug 24, 2017 at 11:19 AM, Serkan Çoban <<a href="mailto:cobanserkan@gmail.com">cobanserkan@gmail.com</a>><br>
>> wrote:<br>
>>><br>
>>> Here you can find 10 stack trace samples from glusterd. I wait 10<br>
>>> seconds between each trace.<br>
>>> <a href="https://www.dropbox.com/s/9f36goq5xn3p1yt/glusterd_pstack.zip?dl=0" rel="noreferrer" target="_blank">https://www.dropbox.com/s/<wbr>9f36goq5xn3p1yt/glusterd_<wbr>pstack.zip?dl=0</a><br>
>>><br>
>>> Content of the first stack trace is here:<br>
>>><br>
>>> Thread 8 (Thread 0x7f7a8cd4e700 (LWP 43069)):<br>
>>> #0 0x0000003aa5c0f00d in nanosleep () from /lib64/libpthread.so.0<br>
>>> #1 0x000000303f837d57 in ?? () from /usr/lib64/libglusterfs.so.0<br>
>>> #2 0x0000003aa5c07aa1 in start_thread () from /lib64/libpthread.so.0<br>
>>> #3 0x0000003aa58e8bbd in clone () from /lib64/libc.so.6<br>
>>> Thread 7 (Thread 0x7f7a8c34d700 (LWP 43070)):<br>
>>> #0 0x0000003aa5c0f585 in sigwait () from /lib64/libpthread.so.0<br>
>>> #1 0x000000000040643b in glusterfs_sigwaiter ()<br>
>>> #2 0x0000003aa5c07aa1 in start_thread () from /lib64/libpthread.so.0<br>
>>> #3 0x0000003aa58e8bbd in clone () from /lib64/libc.so.6<br>
>>> Thread 6 (Thread 0x7f7a8b94c700 (LWP 43071)):<br>
>>> #0 0x0000003aa58acc4d in nanosleep () from /lib64/libc.so.6<br>
>>> #1 0x0000003aa58acac0 in sleep () from /lib64/libc.so.6<br>
>>> #2 0x000000303f8528fb in pool_sweeper () from<br>
>>> /usr/lib64/libglusterfs.so.0<br>
>>> #3 0x0000003aa5c07aa1 in start_thread () from /lib64/libpthread.so.0<br>
>>> #4 0x0000003aa58e8bbd in clone () from /lib64/libc.so.6<br>
>>> Thread 5 (Thread 0x7f7a8af4b700 (LWP 43072)):<br>
>>> #0 0x0000003aa5c0ba5e in pthread_cond_timedwait@@GLIBC_<wbr>2.3.2 () from<br>
>>> /lib64/libpthread.so.0<br>
>>> #1 0x000000303f864afc in syncenv_task () from<br>
>>> /usr/lib64/libglusterfs.so.0<br>
>>> #2 0x000000303f8729f0 in syncenv_processor () from<br>
>>> /usr/lib64/libglusterfs.so.0<br>
>>> #3 0x0000003aa5c07aa1 in start_thread () from /lib64/libpthread.so.0<br>
>>> #4 0x0000003aa58e8bbd in clone () from /lib64/libc.so.6<br>
>>> Thread 4 (Thread 0x7f7a8a54a700 (LWP 43073)):<br>
>>> #0 0x0000003aa5c0ba5e in pthread_cond_timedwait@@GLIBC_<wbr>2.3.2 () from<br>
>>> /lib64/libpthread.so.0<br>
>>> #1 0x000000303f864afc in syncenv_task () from<br>
>>> /usr/lib64/libglusterfs.so.0<br>
>>> #2 0x000000303f8729f0 in syncenv_processor () from<br>
>>> /usr/lib64/libglusterfs.so.0<br>
>>> #3 0x0000003aa5c07aa1 in start_thread () from /lib64/libpthread.so.0<br>
>>> #4 0x0000003aa58e8bbd in clone () from /lib64/libc.so.6<br>
>>> Thread 3 (Thread 0x7f7a886ac700 (LWP 43075)):<br>
>>> #0 0x0000003aa5c0b68c in pthread_cond_wait@@GLIBC_2.3.2 () from<br>
>>> /lib64/libpthread.so.0<br>
>>> #1 0x00007f7a898a099b in ?? () from<br>
>>> /usr/lib64/glusterfs/3.10.5/<wbr>xlator/mgmt/glusterd.so<br>
>>> #2 0x0000003aa5c07aa1 in start_thread () from /lib64/libpthread.so.0<br>
>>> #3 0x0000003aa58e8bbd in clone () from /lib64/libc.so.6<br>
>>> Thread 2 (Thread 0x7f7a87cab700 (LWP 43076)):<br>
>>> #0 0x0000003aa5928692 in __strcmp_sse42 () from /lib64/libc.so.6<br>
>>> #1 0x000000303f82244a in ?? () from /usr/lib64/libglusterfs.so.0<br>
>>> #2 0x000000303f82433d in ?? () from /usr/lib64/libglusterfs.so.0<br>
>>> #3 0x000000303f8245f5 in dict_set () from /usr/lib64/libglusterfs.so.0<br>
>>> #4 0x000000303f82524c in dict_set_str () from<br>
>>> /usr/lib64/libglusterfs.so.0<br>
>>> #5 0x00007f7a898da7fd in ?? () from<br>
>>> /usr/lib64/glusterfs/3.10.5/<wbr>xlator/mgmt/glusterd.so<br>
>>> #6 0x00007f7a8981b0df in ?? () from<br>
>>> /usr/lib64/glusterfs/3.10.5/<wbr>xlator/mgmt/glusterd.so<br>
>>> #7 0x00007f7a8981b47c in ?? () from<br>
>>> /usr/lib64/glusterfs/3.10.5/<wbr>xlator/mgmt/glusterd.so<br>
>>> #8 0x00007f7a89831edf in ?? () from<br>
>>> /usr/lib64/glusterfs/3.10.5/<wbr>xlator/mgmt/glusterd.so<br>
>>> #9 0x00007f7a897f28f7 in ?? () from<br>
>>> /usr/lib64/glusterfs/3.10.5/<wbr>xlator/mgmt/glusterd.so<br>
>>> #10 0x00007f7a897f0bb9 in ?? () from<br>
>>> /usr/lib64/glusterfs/3.10.5/<wbr>xlator/mgmt/glusterd.so<br>
>>> #11 0x00007f7a8984c89a in ?? () from<br>
>>> /usr/lib64/glusterfs/3.10.5/<wbr>xlator/mgmt/glusterd.so<br>
>>> #12 0x00007f7a898323ee in ?? () from<br>
>>> /usr/lib64/glusterfs/3.10.5/<wbr>xlator/mgmt/glusterd.so<br>
>>> #13 0x000000303f40fad5 in rpc_clnt_handle_reply () from<br>
>>> /usr/lib64/libgfrpc.so.0<br>
>>> #14 0x000000303f410c85 in rpc_clnt_notify () from<br>
>>> /usr/lib64/libgfrpc.so.0<br>
>>> #15 0x000000303f40bd68 in rpc_transport_notify () from<br>
>>> /usr/lib64/libgfrpc.so.0<br>
>>> #16 0x00007f7a88a6fccd in ?? () from<br>
>>> /usr/lib64/glusterfs/3.10.5/<wbr>rpc-transport/socket.so<br>
>>> #17 0x00007f7a88a70ffe in ?? () from<br>
>>> /usr/lib64/glusterfs/3.10.5/<wbr>rpc-transport/socket.so<br>
>>> #18 0x000000303f887806 in ?? () from /usr/lib64/libglusterfs.so.0<br>
>>> #19 0x0000003aa5c07aa1 in start_thread () from /lib64/libpthread.so.0<br>
>>> #20 0x0000003aa58e8bbd in clone () from /lib64/libc.so.6<br>
>>> Thread 1 (Thread 0x7f7a93844740 (LWP 43068)):<br>
>>> #0 0x0000003aa5c082fd in pthread_join () from /lib64/libpthread.so.0<br>
>>> #1 0x000000303f8872d5 in ?? () from /usr/lib64/libglusterfs.so.0<br>
>>> #2 0x0000000000409020 in main ()<br>
><br>
><br>
> Serkan,<br>
><br>
> If you could answer the following questions, that would help us to debug<br>
> this issue further:<br>
><br>
> 1. On 80 nodes cluster, did you reboot only one node or multiple ones?<br>
> 2. Are you sure that pstack output was always constantly pointing on strcmp<br>
> being stuck? The reason I ask this is because on 80 nodes setup, friend<br>
> handshake operation would be very costly due to the existing design of<br>
> glusterd following n square mesh communication approach and making sure all<br>
> the configuration data is consistent across and this is the exact reason why<br>
> we want to move to GlusterD2.<br>
> 3. Are you absolutely sure even after few hours glusterd is stuck at the<br>
> same point?<br>
><br>
> Looking at the backtrace, I don't find any reason why a strcmp will be stuck<br>
> until and unless we're try to read through all the bricks (1600 X 3) X 79<br>
> times.<br>
><br>
>>><br>
>>> On Wed, Aug 23, 2017 at 8:46 PM, Atin Mukherjee <<a href="mailto:amukherj@redhat.com">amukherj@redhat.com</a>><br>
>>> wrote:<br>
>>> > Could you be able to provide the pstack dump of the glusterd process?<br>
>>> ><br>
>>> > On Wed, 23 Aug 2017 at 20:22, Atin Mukherjee <<a href="mailto:amukherj@redhat.com">amukherj@redhat.com</a>><br>
>>> > wrote:<br>
>>> >><br>
>>> >> Not yet. Gaurav will be taking a look at it tomorrow.<br>
>>> >><br>
>>> >> On Wed, 23 Aug 2017 at 20:14, Serkan Çoban <<a href="mailto:cobanserkan@gmail.com">cobanserkan@gmail.com</a>><br>
>>> >> wrote:<br>
>>> >>><br>
>>> >>> Hi Atin,<br>
>>> >>><br>
>>> >>> Do you have time to check the logs?<br>
>>> >>><br>
>>> >>> On Wed, Aug 23, 2017 at 10:02 AM, Serkan Çoban<br>
>>> >>> <<a href="mailto:cobanserkan@gmail.com">cobanserkan@gmail.com</a>><br>
>>> >>> wrote:<br>
>>> >>> > Same thing happens with 3.12.rc0. This time perf top shows hanging<br>
>>> >>> > in<br>
>>> >>> > libglusterfs.so and below is the glusterd logs, which are different<br>
>>> >>> > from 3.10.<br>
>>> >>> > With 3.10.5, after 60-70 minutes CPU usage becomes normal and we<br>
>>> >>> > see<br>
>>> >>> > brick processes come online and system starts to answer commands<br>
>>> >>> > like<br>
>>> >>> > "gluster peer status"..<br>
>>> >>> ><br>
>>> >>> > [2017-08-23 06:46:02.150472] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.152181] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.152287] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.153503] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.153647] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.153866] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.153948] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.154018] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.154108] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.154162] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.154250] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.154322] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.154425] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.154494] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.154575] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.154649] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.154705] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.154774] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.154852] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.154903] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.154995] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.155052] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:02.155141] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:27.074052] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> > [2017-08-23 06:46:27.077034] E [client_t.c:324:gf_client_ref]<br>
>>> >>> > (-->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_create+0xf1)<br>
>>> >>> > [0x7f5ae2c091b1]<br>
>>> >>> > -->/usr/lib64/libgfrpc.so.0(<wbr>rpcsvc_request_init+0x9c)<br>
>>> >>> > [0x7f5ae2c0851c]<br>
>>> >>> > -->/usr/lib64/libglusterfs.so.<wbr>0(gf_client_ref+0x1a9)<br>
>>> >>> > [0x7f5ae2ea3949] ) 0-client_t: null client [Invalid argument]<br>
>>> >>> ><br>
>>> >>> > On Tue, Aug 22, 2017 at 7:00 PM, Serkan Çoban<br>
>>> >>> > <<a href="mailto:cobanserkan@gmail.com">cobanserkan@gmail.com</a>><br>
>>> >>> > wrote:<br>
>>> >>> >> I reboot multiple times, also I destroyed the gluster<br>
>>> >>> >> configuration<br>
>>> >>> >> and recreate multiple times. The behavior is same.<br>
>>> >>> >><br>
>>> >>> >> On Tue, Aug 22, 2017 at 6:47 PM, Atin Mukherjee<br>
>>> >>> >> <<a href="mailto:amukherj@redhat.com">amukherj@redhat.com</a>><br>
>>> >>> >> wrote:<br>
>>> >>> >>> My guess is there is a corruption in vol list or peer list which<br>
>>> >>> >>> has<br>
>>> >>> >>> lead<br>
>>> >>> >>> glusterd to get into a infinite loop of traversing a peer/volume<br>
>>> >>> >>> list<br>
>>> >>> >>> and<br>
>>> >>> >>> CPU to hog up. Again this is a guess and I've not got a chance to<br>
>>> >>> >>> take a<br>
>>> >>> >>> detail look at the logs and the strace output.<br>
>>> >>> >>><br>
>>> >>> >>> I believe if you get to reboot the node again the problem will<br>
>>> >>> >>> disappear.<br>
>>> >>> >>><br>
>>> >>> >>> On Tue, 22 Aug 2017 at 20:07, Serkan Çoban<br>
>>> >>> >>> <<a href="mailto:cobanserkan@gmail.com">cobanserkan@gmail.com</a>><br>
>>> >>> >>> wrote:<br>
>>> >>> >>>><br>
>>> >>> >>>> As an addition perf top shows %80 <a href="http://libc-2.12.so" rel="noreferrer" target="_blank">libc-2.12.so</a> __strcmp_sse42<br>
>>> >>> >>>> during<br>
>>> >>> >>>> glusterd %100 cpu usage<br>
>>> >>> >>>> Hope this helps...<br>
>>> >>> >>>><br>
>>> >>> >>>> On Tue, Aug 22, 2017 at 2:41 PM, Serkan Çoban<br>
>>> >>> >>>> <<a href="mailto:cobanserkan@gmail.com">cobanserkan@gmail.com</a>><br>
>>> >>> >>>> wrote:<br>
>>> >>> >>>> > Hi there,<br>
>>> >>> >>>> ><br>
>>> >>> >>>> > I have a strange problem.<br>
>>> >>> >>>> > Gluster version in 3.10.5, I am testing new servers. Gluster<br>
>>> >>> >>>> > configuration is 16+4 EC, I have three volumes, each have 1600<br>
>>> >>> >>>> > bricks.<br>
>>> >>> >>>> > I can successfully create the cluster and volumes without any<br>
>>> >>> >>>> > problems. I write data to cluster from 100 clients for 12<br>
>>> >>> >>>> > hours<br>
>>> >>> >>>> > again<br>
>>> >>> >>>> > no problem. But when I try to reboot a node, glusterd process<br>
>>> >>> >>>> > hangs on<br>
>>> >>> >>>> > %100 CPU usage and seems to do nothing, no brick processes<br>
>>> >>> >>>> > come<br>
>>> >>> >>>> > online. You can find strace of glusterd process for 1 minutes<br>
>>> >>> >>>> > here:<br>
>>> >>> >>>> ><br>
>>> >>> >>>> ><br>
>>> >>> >>>> > <a href="https://www.dropbox.com/s/c7bxfnbqxze1yus/gluster_strace.out?dl=0" rel="noreferrer" target="_blank">https://www.dropbox.com/s/<wbr>c7bxfnbqxze1yus/gluster_<wbr>strace.out?dl=0</a><br>
>>> >>> >>>> ><br>
>>> >>> >>>> > Here is the glusterd logs:<br>
>>> >>> >>>> > <a href="https://www.dropbox.com/s/hkstb3mdeil9a5u/glusterd.log?dl=0" rel="noreferrer" target="_blank">https://www.dropbox.com/s/<wbr>hkstb3mdeil9a5u/glusterd.log?<wbr>dl=0</a><br>
>>> >>> >>>> ><br>
>>> >>> >>>> ><br>
>>> >>> >>>> > By the way, reboot of one server completes without problem if<br>
>>> >>> >>>> > I<br>
>>> >>> >>>> > reboot<br>
>>> >>> >>>> > the servers before creating any volumes.<br>
>>> >>> >>>> ______________________________<wbr>_________________<br>
>>> >>> >>>> Gluster-users mailing list<br>
>>> >>> >>>> <a href="mailto:Gluster-users@gluster.org">Gluster-users@gluster.org</a><br>
>>> >>> >>>> <a href="http://lists.gluster.org/mailman/listinfo/gluster-users" rel="noreferrer" target="_blank">http://lists.gluster.org/<wbr>mailman/listinfo/gluster-users</a><br>
>>> >>> >>><br>
>>> >>> >>> --<br>
>>> >>> >>> - Atin (atinm)<br>
>>> >><br>
>>> >> --<br>
>>> >> - Atin (atinm)<br>
>>> ><br>
>>> > --<br>
>>> > - Atin (atinm)<br>
>>> ______________________________<wbr>_________________<br>
>>> Gluster-users mailing list<br>
>>> <a href="mailto:Gluster-users@gluster.org">Gluster-users@gluster.org</a><br>
>>> <a href="http://lists.gluster.org/mailman/listinfo/gluster-users" rel="noreferrer" target="_blank">http://lists.gluster.org/<wbr>mailman/listinfo/gluster-users</a><br>
>><br>
>><br>
>><br>
>><br>
>> --<br>
>> Milind<br>
>><br>
><br>
</div></div></blockquote></div><br></div></div>