linux-kernel - Re: [RFD] Incremental fsck

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Date:	Tue, 8 Jan 2008 13:31:51 -0800 (PST)
From:	"Alan" <alan@...eserver.org>
To:	"Al Boldi" <a1426z@...ab.com>
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFD] Incremental fsck

> Andi Kleen wrote:
>> Theodore Tso <tytso@....edu> writes:
>> > Now, there are good reasons for doing periodic checks every N mounts
>> > and after M months.  And it has to do with PC class hardware.  (Ted's
>> > aphorism: "PC class hardware is cr*p").
>>
>> If these reasons are good ones (some skepticism here) then the correct
>> way to really handle this would be to do regular background scrubbing
>> during runtime; ideally with metadata checksums so that you can actually
>> detect all corruption.
>>
>> But since fsck is so slow and disks are so big this whole thing
>> is a ticking time bomb now. e.g. it is not uncommon to require tens
>> of minutes or even hours of fsck time and some server that reboots
>> only every few months will eat that when it happens to reboot.
>> This means you get a quite long downtime.
>
> Has there been some thought about an incremental fsck?

Is that anything like a cluster fsck? ]:>
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