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Re: Sudden File System Corruption

To: Emmanuel Florac <eflorac@xxxxxxxxxxxxxx>, Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: Sudden File System Corruption
From: Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx>
Date: Mon, 09 Dec 2013 21:39:52 -0600
Cc: Mike Dacre <mike.dacre@xxxxxxxxx>, "xfs@xxxxxxxxxxx" <xfs@xxxxxxxxxxx>
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <20131209233028.27ee7154@xxxxxxxxxxxxxx>
References: <CAPd9ww9QzFWUnLtzkdktd+fSX9pdft+wL6cvG2MzLpSdLko1dg@xxxxxxxxxxxxxx> <52A191BA.20800@xxxxxxxxxxxxxxxxx> <CAPd9ww8+W2VX2HAfxEkVN5mL1a_+=HDAStf1126WSE33Vb=VsQ@xxxxxxxxxxxxxx> <52A302A9.9050509@xxxxxxxxxxxxxxxxx> <CAPd9ww8ovd1rOCQdjUF=U_ji2SOjyBCG-eFjeWSPXr8L5Zg9-A@xxxxxxxxxxxxxx> <52A401FF.9050506@xxxxxxxxxxxxxxxxx> <20131208160339.5c45ab91@xxxxxxxxxxxxxx> <52A5159F.2060309@xxxxxxxxxxxxxxxxx> <20131209014002.GP31386@dastard> <52A61F3A.7040504@xxxxxxxxxxxxxxxxx> <20131209222131.GX10988@dastard> <20131209233028.27ee7154@xxxxxxxxxxxxxx>
Reply-to: stan@xxxxxxxxxxxxxxxxx
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On 12/9/2013 4:30 PM, Emmanuel Florac wrote:
> Le Tue, 10 Dec 2013 09:21:31 +1100 vous écriviez:
> Dave Chinner wrote:
>>
>> So, while the tech might be great, the benchmarks sucked at
>> demonstrating that.

It's pretty difficult to find comprehensive benchmark results,
especially for niche products such as CacheCade.

> And now that we have enhance-io, bcache and friends, I'm actually more
> confident of using these than some sort of hidden pseudo-hardware magic.

Enhance-IO is $295 per Linux server per year.  Last I saw, Cleancache
isn't fully supported by XFS yet in a stable vanilla release.  AFAIK
bcache isn't fully baked yet.  Coupled with the fact that Mike seems to
be limited to the CentOS ecosystem, I figured CacheCade was his best
option at this time.  It's been around a couple of years, works,
verified decent performance, and no additional kernel software is
required.  And it's relatively easy to configure.

-- 
Stan

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