[Gluster-users] [Gluster-devel] GlusterFS FUSE client hangs on rsyncing lots of file

Raghavendra G raghavendra at gluster.com
Fri Feb 5 06:06:45 UTC 2016 

+soumyak, +rtalur.

On Fri, Jan 29, 2016 at 2:34 PM, Pranith Kumar Karampuri <
pkarampu at redhat.com> wrote:

>
>
> On 01/28/2016 05:05 PM, Pranith Kumar Karampuri wrote:
>
>> With baul jianguo's help I am able to see that FLUSH fops are hanging for
>> some reason.
>>
>> pk1 at localhost - ~/Downloads
>> 17:02:13 :) ⚡ grep "unique=" client-dump1.txt
>> unique=3160758373
>> unique=2073075682
>> unique=1455047665
>> unique=0
>>
>> pk1 at localhost - ~/Downloads
>> 17:02:21 :) ⚡ grep "unique=" client-dump-0.txt
>> unique=3160758373
>> unique=2073075682
>> unique=1455047665
>> unique=0
>>
>> I will be debugging a bit more and post my findings.
>>
> +Raghavendra G
>
> All the stubs are hung in write-behind. I checked that the statedumps
> doesn't have any writes in progress. May be because of some race, flush fop
> is not resumed after write calls are complete? It seems this issue happens
> only when io-threads is enabled on the client.
>
> Pranith
>
>
>> Pranith
>> On 01/28/2016 03:18 PM, baul jianguo wrote:
>>
>>> the client glusterfs gdb info， main thread id is 70800。
>>>   In the top output，70800 thread time 1263:30，70810 thread time
>>> 1321:10，other thread time too small。
>>> (gdb) thread apply all bt
>>>
>>>
>>>
>>> Thread 9 (Thread 0x7fc21acaf700 (LWP 70801)):
>>>
>>> #0  0x00007fc21cc0c535 in sigwait () from /lib64/libpthread.so.0
>>>
>>> #1  0x000000000040539b in glusterfs_sigwaiter (arg=<value optimized
>>> out>) at glusterfsd.c:1653
>>>
>>> #2  0x00007fc21cc04a51 in start_thread () from /lib64/libpthread.so.0
>>>
>>> #3  0x00007fc21c56e93d in clone () from /lib64/libc.so.6
>>>
>>>
>>>
>>> Thread 8 (Thread 0x7fc21a2ae700 (LWP 70802)):
>>>
>>> #0  0x00007fc21cc08a0e in pthread_cond_timedwait@@GLIBC_2.3.2 () from
>>> /lib64/libpthread.so.0
>>>
>>> #1  0x00007fc21ded02bf in syncenv_task (proc=0x121ee60) at syncop.c:493
>>>
>>> #2  0x00007fc21ded6300 in syncenv_processor (thdata=0x121ee60) at
>>> syncop.c:571
>>>
>>> #3  0x00007fc21cc04a51 in start_thread () from /lib64/libpthread.so.0
>>>
>>> #4  0x00007fc21c56e93d in clone () from /lib64/libc.so.6
>>>
>>>
>>>
>>> Thread 7 (Thread 0x7fc2198ad700 (LWP 70803)):
>>>
>>> #0  0x00007fc21cc08a0e in pthread_cond_timedwait@@GLIBC_2.3.2 () from
>>> /lib64/libpthread.so.0
>>>
>>> #1  0x00007fc21ded02bf in syncenv_task (proc=0x121f220) at syncop.c:493
>>>
>>> #2  0x00007fc21ded6300 in syncenv_processor (thdata=0x121f220) at
>>> syncop.c:571
>>>
>>> #3  0x00007fc21cc04a51 in start_thread () from /lib64/libpthread.so.0
>>>
>>> #4  0x00007fc21c56e93d in clone () from /lib64/libc.so.6
>>>
>>>
>>>
>>> Thread 6 (Thread 0x7fc21767d700 (LWP 70805)):
>>>
>>> #0  0x00007fc21cc0bfbd in nanosleep () from /lib64/libpthread.so.0
>>>
>>> #1  0x00007fc21deb16bc in gf_timer_proc (ctx=0x11f2010) at timer.c:170
>>>
>>> #2  0x00007fc21cc04a51 in start_thread () from /lib64/libpthread.so.0
>>>
>>> #3  0x00007fc21c56e93d in clone () from /lib64/libc.so.6
>>>
>>>
>>>
>>> Thread 5 (Thread 0x7fc20fb1e700 (LWP 70810)):
>>>
>>> #0  0x00007fc21c566987 in readv () from /lib64/libc.so.6
>>>
>>> #1  0x00007fc21accbc55 in fuse_thread_proc (data=0x120f450) at
>>> fuse-bridge.c:4752
>>>
>>> #2  0x00007fc21cc04a51 in start_thread () from /lib64/libpthread.so.0
>>>
>>> #3  0x00007fc21c56e93d in clone () from /lib64/libc.so.6 时间最多
>>>
>>>
>>>
>>> Thread 4 (Thread 0x7fc20f11d700 (LWP 70811)): 少点
>>>
>>> #0  0x00007fc21cc0b7dd in read () from /lib64/libpthread.so.0
>>>
>>> #1  0x00007fc21acc0e73 in read (data=<value optimized out>) at
>>> /usr/include/bits/unistd.h:45
>>>
>>> #2  notify_kernel_loop (data=<value optimized out>) at fuse-bridge.c:3786
>>>
>>> #3  0x00007fc21cc04a51 in start_thread () from /lib64/libpthread.so.0
>>>
>>> #4  0x00007fc21c56e93d in clone () from /lib64/libc.so.6
>>>
>>>
>>>
>>> Thread 3 (Thread 0x7fc1b16fe700 (LWP 206224)):
>>>
>>> ---Type <return> to continue, or q <return> to quit---
>>>
>>> #0  0x00007fc21cc08a0e in pthread_cond_timedwait@@GLIBC_2.3.2 () from
>>> /lib64/libpthread.so.0
>>>
>>> #1  0x00007fc20e515e60 in iot_worker (data=0x19eeda0) at io-threads.c:157
>>>
>>> #2  0x00007fc21cc04a51 in start_thread () from /lib64/libpthread.so.0
>>>
>>> #3  0x00007fc21c56e93d in clone () from /lib64/libc.so.6
>>>
>>>
>>>
>>> Thread 2 (Thread 0x7fc1b0bfb700 (LWP 214361)):
>>>
>>> #0  0x00007fc21cc08a0e in pthread_cond_timedwait@@GLIBC_2.3.2 () from
>>> /lib64/libpthread.so.0
>>>
>>> #1  0x00007fc20e515e60 in iot_worker (data=0x19eeda0) at io-threads.c:157
>>>
>>> #2  0x00007fc21cc04a51 in start_thread () from /lib64/libpthread.so.0
>>>
>>> #3  0x00007fc21c56e93d in clone () from /lib64/libc.so.6
>>>
>>>
>>>
>>> Thread 1 (Thread 0x7fc21e31e700 (LWP 70800)):
>>>
>>> #0  0x00007fc21c56ef33 in epoll_wait () from /lib64/libc.so.6
>>>
>>> #1  0x00007fc21deea3e7 in event_dispatch_epoll (event_pool=0x120dec0)
>>> at event-epoll.c:428
>>>
>>> #2  0x00000000004075e4 in main (argc=4, argv=0x7fff3dc93698) at
>>> glusterfsd.c:1983
>>>
>>> On Thu, Jan 28, 2016 at 5:29 PM, baul jianguo <roidinev at gmail.com>
>>> wrote:
>>>
>>>> http://pastebin.centos.org/38941/
>>>> client statedump,only the pid 27419,168030,208655 hang，you can search
>>>> this pid in the statedump file。
>>>>
>>>> On Wed, Jan 27, 2016 at 4:35 PM, Pranith Kumar Karampuri
>>>> <pkarampu at redhat.com> wrote:
>>>>
>>>>> Hi,
>>>>>        If the hang appears on enabling client side io-threads then it
>>>>> could
>>>>> be because of some race that is seen when io-threads is enabled on the
>>>>> client side. 2 things will help us debug this issue:
>>>>> 1) thread apply all bt inside gdb (with debuginfo rpms/debs installed )
>>>>> 2) Complete statedump of the mount at two intervals preferably 10
>>>>> seconds
>>>>> apart. It becomes difficult to find out which ones are stuck vs the
>>>>> ones
>>>>> that are on-going when we have just one statedump. If we have two, we
>>>>> can
>>>>> find which frames are common in both of the statedumps and then take a
>>>>> closer look there.
>>>>>
>>>>> Feel free to ping me on #gluster-dev, nick: pranithk if you have the
>>>>> process
>>>>> hung in that state and you guys don't mind me do a live debugging with
>>>>> you
>>>>> guys. This option is the best of the lot!
>>>>>
>>>>> Thanks a lot baul, Oleksandr for the debugging so far!
>>>>>
>>>>> Pranith
>>>>>
>>>>>
>>>>> On 01/25/2016 01:03 PM, baul jianguo wrote:
>>>>>
>>>>>> 3.5.7 also hangs.only the flush op hung. Yes,off the
>>>>>> performance.client-io-threads ,no hang.
>>>>>>
>>>>>> The hang does not relate the client kernel version.
>>>>>>
>>>>>> One client statdump about flush op,any abnormal?
>>>>>>
>>>>>> [global.callpool.stack.12]
>>>>>>
>>>>>> uid=0
>>>>>>
>>>>>> gid=0
>>>>>>
>>>>>> pid=14432
>>>>>>
>>>>>> unique=16336007098
>>>>>>
>>>>>> lk-owner=77cb199aa36f3641
>>>>>>
>>>>>> op=FLUSH
>>>>>>
>>>>>> type=1
>>>>>>
>>>>>> cnt=6
>>>>>>
>>>>>>
>>>>>>
>>>>>> [global.callpool.stack.12.frame.1]
>>>>>>
>>>>>> ref_count=1
>>>>>>
>>>>>> translator=fuse
>>>>>>
>>>>>> complete=0
>>>>>>
>>>>>>
>>>>>>
>>>>>> [global.callpool.stack.12.frame.2]
>>>>>>
>>>>>> ref_count=0
>>>>>>
>>>>>> translator=datavolume-write-behind
>>>>>>
>>>>>> complete=0
>>>>>>
>>>>>> parent=datavolume-read-ahead
>>>>>>
>>>>>> wind_from=ra_flush
>>>>>>
>>>>>> wind_to=FIRST_CHILD (this)->fops->flush
>>>>>>
>>>>>> unwind_to=ra_flush_cbk
>>>>>>
>>>>>>
>>>>>>
>>>>>> [global.callpool.stack.12.frame.3]
>>>>>>
>>>>>> ref_count=1
>>>>>>
>>>>>> translator=datavolume-read-ahead
>>>>>>
>>>>>> complete=0
>>>>>>
>>>>>> parent=datavolume-open-behind
>>>>>>
>>>>>> wind_from=default_flush_resume
>>>>>>
>>>>>> wind_to=FIRST_CHILD(this)->fops->flush
>>>>>>
>>>>>> unwind_to=default_flush_cbk
>>>>>>
>>>>>>
>>>>>>
>>>>>> [global.callpool.stack.12.frame.4]
>>>>>>
>>>>>> ref_count=1
>>>>>>
>>>>>> translator=datavolume-open-behind
>>>>>>
>>>>>> complete=0
>>>>>>
>>>>>> parent=datavolume-io-threads
>>>>>>
>>>>>> wind_from=iot_flush_wrapper
>>>>>>
>>>>>> wind_to=FIRST_CHILD(this)->fops->flush
>>>>>>
>>>>>> unwind_to=iot_flush_cbk
>>>>>>
>>>>>>
>>>>>>
>>>>>> [global.callpool.stack.12.frame.5]
>>>>>>
>>>>>> ref_count=1
>>>>>>
>>>>>> translator=datavolume-io-threads
>>>>>>
>>>>>> complete=0
>>>>>>
>>>>>> parent=datavolume
>>>>>>
>>>>>> wind_from=io_stats_flush
>>>>>>
>>>>>> wind_to=FIRST_CHILD(this)->fops->flush
>>>>>>
>>>>>> unwind_to=io_stats_flush_cbk
>>>>>>
>>>>>>
>>>>>>
>>>>>> [global.callpool.stack.12.frame.6]
>>>>>>
>>>>>> ref_count=1
>>>>>>
>>>>>> translator=datavolume
>>>>>>
>>>>>> complete=0
>>>>>>
>>>>>> parent=fuse
>>>>>>
>>>>>> wind_from=fuse_flush_resume
>>>>>>
>>>>>> wind_to=xl->fops->flush
>>>>>>
>>>>>> unwind_to=fuse_err_cbk
>>>>>>
>>>>>>
>>>>>>
>>>>>> On Sun, Jan 24, 2016 at 5:35 AM, Oleksandr Natalenko
>>>>>> <oleksandr at natalenko.name> wrote:
>>>>>>
>>>>>>> With "performance.client-io-threads" set to "off" no hangs occurred
>>>>>>> in 3
>>>>>>> rsync/rm rounds. Could that be some fuse-bridge lock race? Will bring
>>>>>>> that
>>>>>>> option to "on" back again and try to get full statedump.
>>>>>>>
>>>>>>> On четвер, 21 січня 2016 р. 14:54:47 EET Raghavendra G wrote:
>>>>>>>
>>>>>>>> On Thu, Jan 21, 2016 at 10:49 AM, Pranith Kumar Karampuri <
>>>>>>>>
>>>>>>>> pkarampu at redhat.com> wrote:
>>>>>>>>
>>>>>>>>> On 01/18/2016 02:28 PM, Oleksandr Natalenko wrote:
>>>>>>>>>
>>>>>>>>>> XFS. Server side works OK, I'm able to mount volume again. Brick
>>>>>>>>>> is
>>>>>>>>>> 30%
>>>>>>>>>> full.
>>>>>>>>>>
>>>>>>>>> Oleksandr,
>>>>>>>>>
>>>>>>>>>         Will it be possible to get the statedump of the client,
>>>>>>>>> bricks
>>>>>>>>>
>>>>>>>>> output next time it happens?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> https://github.com/gluster/glusterfs/blob/master/doc/debugging/statedump.m
>>>>>>>>> d#how-to-generate-statedump
>>>>>>>>>
>>>>>>>> We also need to dump inode information. To do that you've to add
>>>>>>>> "all=yes"
>>>>>>>> to /var/run/gluster/glusterdump.options before you issue commands
>>>>>>>> to get
>>>>>>>> statedump.
>>>>>>>>
>>>>>>>> Pranith
>>>>>>>>>
>>>>>>>>> On понеділок, 18 січня 2016 р. 15:07:18 EET baul jianguo wrote:
>>>>>>>>>>
>>>>>>>>>>> What is your brick file system? and the glusterfsd process and
>>>>>>>>>>> all
>>>>>>>>>>> thread status?
>>>>>>>>>>> I met same issue when client app such as rsync stay in D
>>>>>>>>>>> status,and
>>>>>>>>>>> the brick process and relate thread also be in the D status.
>>>>>>>>>>> And the brick dev disk util is 100% .
>>>>>>>>>>>
>>>>>>>>>>> On Sun, Jan 17, 2016 at 6:13 AM, Oleksandr Natalenko
>>>>>>>>>>>
>>>>>>>>>>> <oleksandr at natalenko.name> wrote:
>>>>>>>>>>>
>>>>>>>>>>>> Wrong assumption, rsync hung again.
>>>>>>>>>>>>
>>>>>>>>>>>> On субота, 16 січня 2016 р. 22:53:04 EET Oleksandr Natalenko
>>>>>>>>>>>> wrote:
>>>>>>>>>>>>
>>>>>>>>>>>>> One possible reason:
>>>>>>>>>>>>>
>>>>>>>>>>>>> cluster.lookup-optimize: on
>>>>>>>>>>>>> cluster.readdir-optimize: on
>>>>>>>>>>>>>
>>>>>>>>>>>>> I've disabled both optimizations, and at least as of now rsync
>>>>>>>>>>>>> still
>>>>>>>>>>>>> does
>>>>>>>>>>>>> its job with no issues. I would like to find out what option
>>>>>>>>>>>>> causes
>>>>>>>>>>>>> such
>>>>>>>>>>>>> a
>>>>>>>>>>>>> behavior and why. Will test more.
>>>>>>>>>>>>>
>>>>>>>>>>>>> On пʼятниця, 15 січня 2016 р. 16:09:51 EET Oleksandr Natalenko
>>>>>>>>>>>>> wrote:
>>>>>>>>>>>>>
>>>>>>>>>>>>>> Another observation: if rsyncing is resumed after hang, rsync
>>>>>>>>>>>>>> itself
>>>>>>>>>>>>>> hangs a lot faster because it does stat of already copied
>>>>>>>>>>>>>> files.
>>>>>>>>>>>>>> So,
>>>>>>>>>>>>>> the
>>>>>>>>>>>>>> reason may be not writing itself, but massive stat on
>>>>>>>>>>>>>> GlusterFS
>>>>>>>>>>>>>> volume
>>>>>>>>>>>>>> as well.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> 15.01.2016 09:40, Oleksandr Natalenko написав:
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> While doing rsync over millions of files from ordinary
>>>>>>>>>>>>>>> partition
>>>>>>>>>>>>>>> to
>>>>>>>>>>>>>>> GlusterFS volume, just after approx. first 2 million rsync
>>>>>>>>>>>>>>> hang
>>>>>>>>>>>>>>> happens, and the following info appears in dmesg:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> ===
>>>>>>>>>>>>>>> [17075038.924481] INFO: task rsync:10310 blocked for more
>>>>>>>>>>>>>>> than
>>>>>>>>>>>>>>> 120
>>>>>>>>>>>>>>> seconds.
>>>>>>>>>>>>>>> [17075038.931948] "echo 0 >
>>>>>>>>>>>>>>> /proc/sys/kernel/hung_task_timeout_secs"
>>>>>>>>>>>>>>> disables this message.
>>>>>>>>>>>>>>> [17075038.940748] rsync           D ffff88207fc13680     0
>>>>>>>>>>>>>>> 10310
>>>>>>>>>>>>>>> 10309 0x00000080
>>>>>>>>>>>>>>> [17075038.940752]  ffff8809c578be18 0000000000000086
>>>>>>>>>>>>>>> ffff8809c578bfd8
>>>>>>>>>>>>>>> 0000000000013680
>>>>>>>>>>>>>>> [17075038.940756]  ffff8809c578bfd8 0000000000013680
>>>>>>>>>>>>>>> ffff880310cbe660
>>>>>>>>>>>>>>> ffff881159d16a30
>>>>>>>>>>>>>>> [17075038.940759]  ffff881e3aa25800 ffff8809c578be48
>>>>>>>>>>>>>>> ffff881159d16b10
>>>>>>>>>>>>>>> ffff88087d553980
>>>>>>>>>>>>>>> [17075038.940762] Call Trace:
>>>>>>>>>>>>>>> [17075038.940770] [<ffffffff8160a1d9>] schedule+0x29/0x70
>>>>>>>>>>>>>>> [17075038.940797] [<ffffffffa023a53d>]
>>>>>>>>>>>>>>> __fuse_request_send+0x13d/0x2c0
>>>>>>>>>>>>>>> [fuse]
>>>>>>>>>>>>>>> [17075038.940801] [<ffffffffa023db30>] ?
>>>>>>>>>>>>>>> fuse_get_req_nofail_nopages+0xc0/0x1e0 [fuse]
>>>>>>>>>>>>>>> [17075038.940805] [<ffffffff81098350>] ?
>>>>>>>>>>>>>>> wake_up_bit+0x30/0x30
>>>>>>>>>>>>>>> [17075038.940809] [<ffffffffa023a6d2>]
>>>>>>>>>>>>>>> fuse_request_send+0x12/0x20
>>>>>>>>>>>>>>> [fuse]
>>>>>>>>>>>>>>> [17075038.940813] [<ffffffffa024382f>] fuse_flush+0xff/0x150
>>>>>>>>>>>>>>> [fuse]
>>>>>>>>>>>>>>> [17075038.940817] [<ffffffff811c45c4>] filp_close+0x34/0x80
>>>>>>>>>>>>>>> [17075038.940821] [<ffffffff811e4ed8>] __close_fd+0x78/0xa0
>>>>>>>>>>>>>>> [17075038.940824] [<ffffffff811c6103>] SyS_close+0x23/0x50
>>>>>>>>>>>>>>> [17075038.940828] [<ffffffff81614de9>]
>>>>>>>>>>>>>>> system_call_fastpath+0x16/0x1b
>>>>>>>>>>>>>>> ===
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> rsync blocks in D state, and to kill it, I have to do umount
>>>>>>>>>>>>>>> --lazy
>>>>>>>>>>>>>>> on
>>>>>>>>>>>>>>> GlusterFS mountpoint, and then kill corresponding client
>>>>>>>>>>>>>>> glusterfs
>>>>>>>>>>>>>>> process. Then rsync exits.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Here is GlusterFS volume info:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> ===
>>>>>>>>>>>>>>> Volume Name: asterisk_records
>>>>>>>>>>>>>>> Type: Distributed-Replicate
>>>>>>>>>>>>>>> Volume ID: dc1fe561-fa3a-4f2e-8330-ec7e52c75ba4
>>>>>>>>>>>>>>> Status: Started
>>>>>>>>>>>>>>> Number of Bricks: 3 x 2 = 6
>>>>>>>>>>>>>>> Transport-type: tcp
>>>>>>>>>>>>>>> Bricks:
>>>>>>>>>>>>>>> Brick1:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> server1:/bricks/10_megaraid_0_3_9_x_0_4_3_hdd_r1_nolvm_hdd_storage_0
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> 1
>>>>>>>>>>>>>>> /as
>>>>>>>>>>>>>>> te
>>>>>>>>>>>>>>> risk/records Brick2:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> server2:/bricks/10_megaraid_8_5_14_x_8_6_16_hdd_r1_nolvm_hdd_storage
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> _
>>>>>>>>>>>>>>> 01/
>>>>>>>>>>>>>>> as
>>>>>>>>>>>>>>> terisk/records Brick3:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> server1:/bricks/11_megaraid_0_5_4_x_0_6_5_hdd_r1_nolvm_hdd_storage_0
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> 2
>>>>>>>>>>>>>>> /as
>>>>>>>>>>>>>>> te
>>>>>>>>>>>>>>> risk/records Brick4:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> server2:/bricks/11_megaraid_8_7_15_x_8_8_20_hdd_r1_nolvm_hdd_storage
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> _
>>>>>>>>>>>>>>> 02/
>>>>>>>>>>>>>>> as
>>>>>>>>>>>>>>> terisk/records Brick5:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> server1:/bricks/12_megaraid_0_7_6_x_0_13_14_hdd_r1_nolvm_hdd_storage
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> _
>>>>>>>>>>>>>>> 03/
>>>>>>>>>>>>>>> as
>>>>>>>>>>>>>>> terisk/records Brick6:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> server2:/bricks/12_megaraid_8_9_19_x_8_13_24_hdd_r1_nolvm_hdd_storag
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> e
>>>>>>>>>>>>>>> _03
>>>>>>>>>>>>>>> /a
>>>>>>>>>>>>>>> sterisk/records Options Reconfigured:
>>>>>>>>>>>>>>> cluster.lookup-optimize: on
>>>>>>>>>>>>>>> cluster.readdir-optimize: on
>>>>>>>>>>>>>>> client.event-threads: 2
>>>>>>>>>>>>>>> network.inode-lru-limit: 4096
>>>>>>>>>>>>>>> server.event-threads: 4
>>>>>>>>>>>>>>> performance.client-io-threads: on
>>>>>>>>>>>>>>> storage.linux-aio: on
>>>>>>>>>>>>>>> performance.write-behind-window-size: 4194304
>>>>>>>>>>>>>>> performance.stat-prefetch: on
>>>>>>>>>>>>>>> performance.quick-read: on
>>>>>>>>>>>>>>> performance.read-ahead: on
>>>>>>>>>>>>>>> performance.flush-behind: on
>>>>>>>>>>>>>>> performance.write-behind: on
>>>>>>>>>>>>>>> performance.io-thread-count: 2
>>>>>>>>>>>>>>> performance.cache-max-file-size: 1048576
>>>>>>>>>>>>>>> performance.cache-size: 33554432
>>>>>>>>>>>>>>> features.cache-invalidation: on
>>>>>>>>>>>>>>> performance.readdir-ahead: on
>>>>>>>>>>>>>>> ===
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> The issue reproduces each time I rsync such an amount of
>>>>>>>>>>>>>>> files.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> How could I debug this issue better?
>>>>>>>>>>>>>>> _______________________________________________
>>>>>>>>>>>>>>> Gluster-users mailing list
>>>>>>>>>>>>>>> Gluster-users at gluster.org
>>>>>>>>>>>>>>> http://www.gluster.org/mailman/listinfo/gluster-users
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>> _______________________________________________
>>>>>>>>>>>>>> Gluster-devel mailing list
>>>>>>>>>>>>>> Gluster-devel at gluster.org
>>>>>>>>>>>>>> http://www.gluster.org/mailman/listinfo/gluster-devel
>>>>>>>>>>>>>>
>>>>>>>>>>>>> _______________________________________________
>>>>>>>>>>>>> Gluster-devel mailing list
>>>>>>>>>>>>> Gluster-devel at gluster.org
>>>>>>>>>>>>> http://www.gluster.org/mailman/listinfo/gluster-devel
>>>>>>>>>>>>>
>>>>>>>>>>>> _______________________________________________
>>>>>>>>>>>> Gluster-devel mailing list
>>>>>>>>>>>> Gluster-devel at gluster.org
>>>>>>>>>>>> http://www.gluster.org/mailman/listinfo/gluster-devel
>>>>>>>>>>>>
>>>>>>>>>>> _______________________________________________
>>>>>>>>>> Gluster-users mailing list
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>>>>>>>>>>
>>>>>>>>> _______________________________________________
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>>>>>>>>>
>>>>>>>>
>>>>>>>
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>
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-- 
Raghavendra G
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