----- Original Message -----
> From: "NeilBrown" <neilb@xxxxxxxx>
> To: "Xiao Ni" <xni@xxxxxxxxxx>
> Cc: linux-raid@xxxxxxxxxxxxxxx
> Sent: Thursday, September 14, 2017 7:05:20 AM
> Subject: Re: [PATCH 0/4] RFC: attempt to remove md deadlocks with metadata without
>
> On Wed, Sep 13 2017, Xiao Ni wrote:
> >
> > Hi Neil
> >
> > Sorry for the bad news. The test is still running and it's stuck again.
>
> Any details? Anything at all? Just a little hint maybe?
>
> Just saying "it's stuck again" is very nearly useless.
>
Hi Neil
It doesn't show any useful information in /var/log/messages
echo file raid5.c +p > /sys/kernel/debug/dynamic_debug/control
There aren't any messages too.
It looks like another problem.
[root@dell-pr1700-02 ~]# ps auxf | grep D
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 8381 0.0 0.0 0 0 ? D Sep13 0:00 \_ [kworker/u8:1]
root 8966 0.0 0.0 0 0 ? D Sep13 0:00 \_ [jbd2/md0-8]
root 824 0.0 0.1 216856 8492 ? Ss Sep03 0:06 /usr/bin/abrt-watch-log -F BUG: WARNING: at WARNING: CPU: INFO: possible recursive locking detected ernel BUG at list_del corruption list_add corruption do_IRQ: stack overflow: ear stack overflow (cur: eneral protection fault nable to handle kernel ouble fault: RTNL: assertion failed eek! page_mapcount(page) went negative! adness at NETDEV WATCHDOG ysctl table check failed : nobody cared IRQ handler type mismatch Machine Check Exception: Machine check events logged divide error: bounds: coprocessor segment overrun: invalid TSS: segment not present: invalid opcode: alignment check: stack segment: fpu exception: simd exception: iret exception: /var/log/messages -- /usr/bin/abrt-dump-oops -xtD
root 836 0.0 0.0 195052 3200 ? Ssl Sep03 0:00 /usr/sbin/gssproxy -D
root 1225 0.0 0.0 106008 7436 ? Ss Sep03 0:00 /usr/sbin/sshd -D
root 12411 0.0 0.0 112672 2264 pts/0 S+ 00:50 0:00 \_ grep --color=auto D
root 8987 0.0 0.0 109000 2728 pts/2 D+ Sep13 0:04 \_ dd if=/dev/urandom of=/mnt/md_test/testfile bs=1M count=1000
root 8983 0.0 0.0 7116 2080 ? Ds Sep13 0:00 /usr/sbin/mdadm --grow --continue /dev/md0
[root@dell-pr1700-02 ~]# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : active raid5 loop6[7] loop4[6] loop5[5](S) loop3[3] loop2[2] loop1[1] loop0[0]
2039808 blocks super 1.2 level 5, 512k chunk, algorithm 2 [6/6] [UUUUUU]
[>....................] reshape = 0.0% (1/509952) finish=1059.5min speed=7K/sec
unused devices: <none>
It looks like the reshape doesn't start. This time I didn't add the codes to check
the information of mddev->suspended and active_stripes. I just added the patches
to source codes. Do you have other suggestions to check more things?
Best Regards
Xiao
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