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Re: Sudden File System Corruption

To: stan@xxxxxxxxxxxxxxxxx
Subject: Re: Sudden File System Corruption
From: Emmanuel Florac <eflorac@xxxxxxxxxxxxxx>
Date: Mon, 9 Dec 2013 10:49:38 +0100
Cc: Mike Dacre <mike.dacre@xxxxxxxxx>, "xfs@xxxxxxxxxxx" <xfs@xxxxxxxxxxx>
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <52A5159F.2060309@xxxxxxxxxxxxxxxxx>
Organization: Intellique
References: <CAPd9ww_qT9J_Rt04g7+OApoBeggNOyWNwD+57DiDTuUvz-O-0g@xxxxxxxxxxxxxx> <52A03513.6030408@xxxxxxxxxxxxxxxxx> <CAPd9ww9hsOFK6pxqRY-YtLLAkkJHCuSi1BaM4n9=2XTjNVAn2Q@xxxxxxxxxxxxxx> <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>
Le Sun, 08 Dec 2013 18:58:07 -0600 vous Ãcriviez:

> Emmanuel do you recall which SSD you used here? 

Sure, was an Intel X25 32 GB. Definitely both tiny and slow by today
standards.

> 7500 IOPS is very low by today's standards. 

That's a benchmark run on the whole 3.5 TB array, not the SSD alone. The
SSD alone easily reached 20 KIOPS. 

> What I'm wondering is if you had an older low
> IOPS SSD, or, a modern high IOPS rated SSD that performed way below
> its specs in this application.

Definitely an older SSD. BTW the 51645 tested was capable of about 25
KIOPS.

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