From: John Robinson <john.robinson@anonymous.org.uk>
To: Miles Fidelman <mfidelman@meetinghouse.net>
Cc: linux-raid@vger.kernel.org
Subject: Re: 3TB drives failure rate (summary)
Date: Thu, 01 Nov 2012 16:05:50 +0000 [thread overview]
Message-ID: <50929DDE.60906@anonymous.org.uk> (raw)
In-Reply-To: <509297CA.4090606@meetinghouse.net>
On 01/11/2012 15:39, Miles Fidelman wrote:
> John Robinson wrote:
>> On 01/11/2012 15:13, Miles Fidelman wrote:
>>> Phil Turmel wrote:
>>>> I strongly encourage you to run "smartctl -l scterc /dev/sdX" for each
>>>> of your drives. For any drive that warns that it doesn't support SCT
>>>> ERC, set the controller device timeout to 180 like so:
>>>>
>>>> echo 180 >/sys/block/sdX/device/timeout
>>>>
>>>> If the report says read or write ERC is disabled, run "smartctl -l
>>>> scterc,70,70 /dev/sdX" to set it to 7.0 seconds.
>>>>
>>>> You then set up a boot-time script to do these adjustments at every
>>>> restart.
>>>
>>> Sounds like a very bad idea if your drive is part of a RAID array.
>>
>> Either of these - the scterc if you can, the device timeout if you
>> can't - are an excellent idea if you are using a desktop drive as part
>> of a md RAID array. Why do you think otherwise?
>
> If I'm seeing that kind of device timeout, I want it out of my array,
> and I want an alert telling me to replace it. Otherwise my server's
> performance goes to s*&t.
You might not want that kind of device timeout, but as you've made clear
earlier in this thread, you wouldn't use desktop drives in md RAID, so
this doesn't really apply to you.
Anyone using desktop drives which don't support SCT ERC in md RAID is
liable to see long timeouts on the simplest bad sector, and they
probably prefer to keep the drive in the array and have the sector
rewritten after reconstruction than have the drive failed out of the array.
Cheers,
John.
next prev parent reply other threads:[~2012-11-01 16:05 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-28 12:15 3TB drives failure rate Rainer Fügenstein
2012-10-28 12:19 ` Mathias Burén
2012-10-28 12:49 ` John Robinson
2012-10-28 12:54 ` Michael Tokarev
2012-10-28 16:47 ` Ed W
2012-10-28 17:05 ` Joe Landman
2012-10-28 22:12 ` joystick
2012-10-28 22:24 ` Miles Fidelman
2012-10-28 23:59 ` joystick
2012-10-29 0:09 ` Miles Fidelman
2012-10-29 4:29 ` Roman Mamedov
2012-10-29 7:54 ` David Brown
2012-10-29 13:02 ` Phil Turmel
2012-10-30 23:54 ` 3TB drives failure rate (summary) Rainer Fügenstein
2012-10-31 12:35 ` Phil Turmel
2012-11-01 15:13 ` Miles Fidelman
2012-11-01 15:24 ` John Robinson
2012-11-01 15:39 ` Miles Fidelman
2012-11-01 16:05 ` John Robinson [this message]
2012-11-01 16:25 ` Miles Fidelman
2013-02-05 17:43 ` Adam Goryachev
2013-02-05 18:08 ` Roy Sigurd Karlsbakk
2013-02-05 20:34 ` Wolfgang Denk
2012-10-29 13:26 ` 3TB drives failure rate Miles Fidelman
2012-10-28 19:50 ` Chris Murphy
2012-10-28 19:59 ` Roman Mamedov
2012-10-28 20:10 ` Chris Murphy
2012-10-28 20:16 ` Roman Mamedov
2012-10-28 20:34 ` Chris Murphy
2012-10-28 20:49 ` Roman Mamedov
2012-10-28 20:59 ` Chris Murphy
2012-10-28 21:07 ` Miles Fidelman
2012-10-28 20:50 ` Chris Murphy
2012-10-28 21:07 ` Chris Murphy
2012-10-28 21:18 ` Roman Mamedov
2012-10-28 21:24 ` Mikael Abrahamsson
2012-10-28 21:45 ` Miles Fidelman
2012-10-28 22:35 ` Chris Murphy
2012-10-28 21:51 ` Chris Murphy
2012-10-28 21:59 ` joystick
2012-10-28 22:10 ` Phil Turmel
2012-10-29 0:12 ` joystick
2012-10-29 0:21 ` Phil Turmel
2012-10-29 0:27 ` Chris Murphy
2012-10-28 21:21 ` Mikael Abrahamsson
2012-10-28 23:51 ` Peter Kieser
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=50929DDE.60906@anonymous.org.uk \
--to=john.robinson@anonymous.org.uk \
--cc=linux-raid@vger.kernel.org \
--cc=mfidelman@meetinghouse.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.