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From: Eric Sandeen <sandeen@redhat.com>
To: supersud501 <supersud501@yahoo.de>
Cc: Calvin Walton <calvin.walton@gmail.com>, linux-ext4@vger.kernel.org
Subject: Re: e2fsck (git) on ext4: unsupported feature(s): huge_file
Date: Wed, 09 Apr 2008 11:09:18 -0500	[thread overview]
Message-ID: <47FCEA2E.3030302@redhat.com> (raw)
In-Reply-To: <47FCD828.9020204@yahoo.de>

supersud501 wrote:
> Calvin Walton wrote:
>> On Tue, 2008-04-08 at 13:36 -0500, Eric Sandeen wrote:

...

>>> Do you in fact have any very large files on the disk?
>> I'm just curious - if I know for sure that I don't have any huge files
>> on my disk, would I be able to do something like use debugfs to simply
>> clear the flag?
>>
> 
> interests mee, too. and how are "huge files" defined? thought they are 
>  >4gb files?

"large" files are for ei->i_disksize > 0x7fffffffULL, or 2147483647
bytes / 2G.  This is just max offset, not block counts; i.e. completely
sparse 2g file will set this flag.

the "huge" sb flag is set if any file has i_blocks > ~0UL, or 2^32
512-byte blocks, or around 2T, but in this case I think sparseness
doesn't count; you have to actually have the blocks allocated.

-Eric


  reply	other threads:[~2008-04-09 16:09 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-04-08 17:58 e2fsck (git) on ext4: unsupported feature(s): huge_file supersud501
2008-04-08 18:36 ` Eric Sandeen
2008-04-08 19:45   ` supersud501
2008-04-08 21:00     ` Theodore Tso
2008-04-09  9:15       ` supersud501
2008-04-09 16:11         ` Theodore Tso
2008-04-09 17:53           ` supersud501
2008-04-09 18:59             ` Theodore Tso
2008-04-09 19:23               ` supersud501
2008-04-09 17:56           ` supersud501
2008-04-09 18:12           ` supersud501
2008-04-09 19:06             ` Theodore Tso
2008-04-09 19:19               ` supersud501
2008-04-09 21:08                 ` Theodore Tso
2008-04-11 13:04                   ` Theodore Tso
2008-04-11 13:38                     ` supersud501
2008-04-09 15:50       ` [E2FSPROGS, PATCH] Add support for the HUGE_FILE feature Theodore Ts'o
2008-04-09 12:54     ` e2fsck (git) on ext4: unsupported feature(s): huge_file Eric Sandeen
2008-04-09 14:45   ` Calvin Walton
2008-04-09 14:52     ` supersud501
2008-04-09 16:09       ` Eric Sandeen [this message]
2008-04-08 18:37 ` Eric Sandeen
2008-04-08 22:40   ` Christian Kujau

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