From: roger zhou <zzhou-IBi9RG/b67k@public.gmane.org>
To: Tejas Rao <raot-IGkKxAqZmp0@public.gmane.org>,
Aaron Knister <aaron.s.knister-NSQ8wuThN14@public.gmane.org>
Cc: NeilBrown <neilb-l3A5Bk7waGM@public.gmane.org>,
linux-raid-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Scott Sinno <scott.sinno-NSQ8wuThN14@public.gmane.org>,
users-iJOQKD3IPJ/s2ve5o0e2fw@public.gmane.org
Subject: Re: clustered MD - beyond RAID1
Date: Fri, 25 Dec 2015 16:47:14 +0800 [thread overview]
Message-ID: <567D0292.6040606@suse.com> (raw)
In-Reply-To: <5678B693.40907-IGkKxAqZmp0@public.gmane.org>
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On 12/22/2015 10:33 AM, Tejas Rao wrote:
> On 12/21/2015 20:50, Aaron Knister wrote:
>
[...]
>>
>> I'm curious now, Redhat doesn't support SW raid failover? I did some
>> googling and found this:
>>
>> https://access.redhat.com/solutions/231643
>>
>> While I can't read the solution I have to figure that they're now
>> supporting that. I might actually explore that for this project.
> https://access.redhat.com/solutions/410203
> This article states that md raid is not supported in RHEL6/7 under any
> circumstances, including active/passive modes.
OCFS2 or GFS2(same for GPFS, as the shared filesystem) over a shared
storage is a typical Cluster configuration for Linux High Availability.
Where, Clustered LVM (cLVM) is supported by both SUSE and Redhat to do
mirroring to protect the data. However, the performance loss is very big
and make people not so happy about this clustered mirror solution. This
is where the motivation for clustered MD solution comes from.
With clustered md, this new solution could provide nearly the same
performance as the native raid1. You may have interest to validate this
from your lab with your configuration;)
Cheers,
Roger
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next prev parent reply other threads:[~2015-12-25 8:47 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-18 15:29 clustered MD - beyond RAID1 Scott Sinno
2015-12-20 23:25 ` NeilBrown
2015-12-21 19:19 ` Tejas Rao
2015-12-21 20:47 ` NeilBrown
2015-12-21 21:27 ` Tejas Rao
2015-12-21 22:03 ` NeilBrown
2015-12-21 22:29 ` Adam Goryachev
2015-12-21 23:09 ` NeilBrown
2015-12-22 1:36 ` Tejas Rao
2015-12-22 2:29 ` Alireza Haghdoost
2015-12-22 4:13 ` NeilBrown
[not found] ` <CAB9NSeXhoHd3_BDRrWAsBrW0Dj2=NucyUFt8pSP0zB5K=RkUOg@mail.gmail.com>
2016-12-05 1:46 ` Aaron Knister
[not found] ` <5678A2B9.6070008@bnl.gov>
2015-12-22 1:50 ` Aaron Knister
2015-12-22 2:33 ` Tejas Rao
[not found] ` <5678B693.40907-IGkKxAqZmp0@public.gmane.org>
2015-12-25 8:47 ` roger zhou [this message]
2016-12-02 18:12 Robert Woodworth
2016-12-02 20:02 ` Shaohua Li
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