From: NeilBrown <neilb@suse.de>
To: Francis Moreau <francis.moro@gmail.com>
Cc: Martin Wilck <mwilck@arcor.de>, linux-raid@vger.kernel.org
Subject: Re: mdadm 3.3: issue with mdmon --takeover
Date: Wed, 4 Sep 2013 16:08:32 +1000 [thread overview]
Message-ID: <20130904160832.3627bcb8@notabene.brown> (raw)
In-Reply-To: <CAC9WiBjg4Tbv_UM4o66-8jtFEYGvh3kuP6xSdnz7uL+fq3fZTQ@mail.gmail.com>
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On Tue, 3 Sep 2013 17:54:55 +0200 Francis Moreau <francis.moro@gmail.com>
wrote:
> Hello Martin :)
>
> I gave 3.3 release a try and I have a first issue: basically starting
> mdmon (3.3) with --takeover twice make mdmon failing on the second
> run.
>
> Please find details below:
>
> # cat /proc/mdstat
> Personalities : [raid1]
> md126 : active raid1 sdb[1] sda[0]
> 2064384 blocks super external:/md127/0 [2/2] [UU]
>
> md127 : inactive sdb[1](S) sda[0](S)
> 65536 blocks super external:ddf
>
> # ps aux | grep dmon
> root 311 0.4 1.0 80580 10944 ? SLsl 17:46 0:00
> @sbin/mdmon --takeover md127
>
> # ./mdmon --takeover --all
>
> # ps aux | grep dmon
> root 3182 1.3 1.0 15156 11056 ? SLsl 17:50 0:00
> ./mdmon --takeover md127
>
> # ./mdmon --takeover --all
> ...
> monitor: wake ( )
> monitor: wake ( )
> monitor: wake ( )
> monitor: wake ( )
> monitor: wake ( )
> monitor: wake ( 12:array_state )
> read_and_act(0): 1378223477.512347 state:clean prev:clean action:idle
> prev: idle start:18446744073709551615
> ddf mark 0/Linux-MDdeadbeef00000000?Ob79e0c8b1n (5) clean 18446744073709551615
> manage_new: inst: 0 action: 11 state: 12
> mdmon: ddf_open_new: subarray 0 doesn't exist
> mdmon: failed to monitor external:/md127/0
> free_aa: sys_name: md126
> read_and_act(0): state:clean action:idle next( )
> manage_new: inst: 0 action: 20 state: 21
> ddf_open_new: new subarray 0, GUID: Linux-MDdeadbeef00000000?Ob79e0c8b1n
> free_aa: sys_name: md126
> caught sigterm, all clean... exiting
> monitor: wake ( )
> no arrays to monitor... exiting
>
> # ps aux | grep dmon
> #
>
> Thanks
I can't easily reproduce this.
Can you run "mdmon --takeover" in one window, then the next "mdmon
--takeover" is a different window so we can clearly see which messages are
coming from the mdmon which is exiting and which are coming from the mdmon
which is starting.
Thanks.
NeilBrown
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next prev parent reply other threads:[~2013-09-04 6:08 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-03 15:54 mdadm 3.3: issue with mdmon --takeover Francis Moreau
2013-09-04 6:08 ` NeilBrown [this message]
2013-09-04 7:36 ` Francis Moreau
2013-09-05 2:11 ` NeilBrown
[not found] ` <CAC9WiBiHcS126iFv91250d83sMrBYmRbvoqYAEhjJWjb2p5J3A@mail.gmail.com>
2013-09-05 9:03 ` Francis Moreau
2013-09-10 23:35 ` NeilBrown
2013-09-11 7:40 ` Francis Moreau
2013-09-11 8:11 ` Francis Moreau
2013-09-12 5:03 ` NeilBrown
2013-09-12 7:40 ` Francis Moreau
2013-09-12 5:00 ` NeilBrown
2013-09-11 20:51 ` Martin Wilck
2013-09-12 4:59 ` NeilBrown
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