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From: Nix <nix@esperi.org.uk>
To: NeilBrown <neilb@suse.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: 4.11.2: reshape raid5 -> raid6 atop bcache deadlocks at start on md_attr_store / raid5_make_request
Date: Thu, 25 May 2017 13:14:43 +0100	[thread overview]
Message-ID: <87d1axb0b0.fsf@esperi.org.uk> (raw)
In-Reply-To: <874lw9iuwn.fsf@notabene.neil.brown.name> (NeilBrown's message of "Thu, 25 May 2017 11:31:52 +1000")

On 25 May 2017, NeilBrown spake thusly:

> On Wed, May 24 2017, Nix wrote:
>>
>> (I'm not sure what to do if it *works* -- how do I test any later
>> changes? I might reshape back to RAID-5 + spare again just so I can test
>> later stuff, but that would take ages: the array is over 14TiB...)
>
> If it works (which it did), then we'll have enough understanding that it
> should be easy to simulate the problem accurately in a VM.
> I don't think there is any need for you to experiment further on your
> data.

If you need me to, I can -- this machine isn't commissioned yet (though
the plan *is* to do so next weekend, I can put it off: I've put it off
before...)

Plus I have plenty of backups. :)

-- 
NULL && (void)

  reply	other threads:[~2017-05-25 12:14 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-22  9:13 4.11.2: reshape raid5 -> raid6 atop bcache deadlocks at start on md_attr_store / raid5_make_request Nix
2017-05-22 11:35 ` NeilBrown
2017-05-22 15:30   ` Nix
2017-05-22 19:07     ` Wols Lists
2017-05-22 20:43       ` Nix
2017-05-23  1:20         ` NeilBrown
2017-05-23 10:10           ` Nix
2017-05-23  1:39       ` NeilBrown
2017-05-23 14:47         ` Wols Lists
2017-05-24  1:50           ` NeilBrown
2017-05-23  1:07     ` NeilBrown
2017-05-22 21:38   ` Nix
2017-05-23 14:16     ` Wols Lists
2017-05-23 15:00       ` Nix
2017-05-24  1:24     ` NeilBrown
2017-05-24 13:28       ` Nix
2017-05-25  1:31         ` NeilBrown
2017-05-25 12:14           ` Nix [this message]
2017-05-24 19:42       ` Nix
2017-05-24 22:57       ` Shaohua Li
2017-05-25  1:30         ` NeilBrown
2017-05-25  1:46           ` Shaohua Li
2017-05-26  3:23             ` NeilBrown
2017-05-26 16:40               ` Shaohua Li
2017-05-28 23:17         ` NeilBrown
2017-05-30 17:41           ` Shaohua Li
2017-06-05  6:49             ` [PATCH] md: fix deadlock between mddev_suspend() and md_write_start() NeilBrown
2017-06-06  0:01               ` Shaohua Li
2017-06-07  1:45                 ` NeilBrown

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