From: Phillip Susi <psusi@ubuntu.com>
To: Eric Sandeen <sandeen@redhat.com>
Cc: Rabeeh Khoury <rabeeh3000@gmail.com>, linux-ext4@vger.kernel.org
Subject: Re: 16 TB filesystem limit on 32bit machine
Date: Mon, 20 Feb 2012 16:17:31 -0500 [thread overview]
Message-ID: <4F42B86B.60706@ubuntu.com> (raw)
In-Reply-To: <4F4279F1.8060805@redhat.com>
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On 2/20/2012 11:50 AM, Eric Sandeen wrote:
> fs metadata is mapped into an address space, IIRC, so can't be
> addressed past 2^32 pages. Also, mkfs can't do buffered IO to the
> device past 16T (it is writing to a device _file_) and ditto for
> e2fsck.
But the file is only used for open(), after that the IO is handled by
the correct device driver, which handles 64 bit offsets ( when you
have CONFIG_LBDAF on ). So if you can change the page cache index
size ( and it doesn't blow up ) this should work fine.
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next prev parent reply other threads:[~2012-02-20 21:17 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-20 15:31 16 TB filesystem limit on 32bit machine Rabeeh Khoury
2012-02-20 16:50 ` Eric Sandeen
2012-02-20 21:17 ` Phillip Susi [this message]
2012-02-20 22:50 ` Eric Sandeen
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