From: Andrei Borzenkov <arvidjaar@gmail.com>
To: Marek Behun <marek.behun@nic.cz>, linux-btrfs@vger.kernel.org
Subject: Re: when does btrfs create sparse extents?
Date: Thu, 23 Apr 2020 08:57:59 +0300 [thread overview]
Message-ID: <9f96fe0c-cbe5-12c8-67f5-2981c9273c5d@gmail.com> (raw)
In-Reply-To: <20200422205209.0e2efd53@nic.cz>
22.04.2020 21:52, Marek Behun пишет:
> Hello,
>
> there was a bug fixed recently in U-Boot's btrfs driver - the driver
> failed to read files with sparse extents. This causes that sometimes
> device failes to boot Linux, since the kernel fails to load from
> storage.
>
Do you mean that kernel image (vmlinuz?) had holes? Or there were some
other files that caused U-Boot to fail?
> So when does kernel's btrfs driver write sparse extents? Is it always
> when it finds a PAGE_SIZEd and aligned all-zeros block? Or is it more
> complicated?
>
> Thanks.
>
> Marek
>
next prev parent reply other threads:[~2020-04-23 5:58 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-22 18:52 when does btrfs create sparse extents? Marek Behun
2020-04-22 20:26 ` Chris Murphy
2020-04-22 20:44 ` Marek Behun
2020-04-22 20:44 ` Chris Murphy
2020-04-22 20:58 ` Marek Behun
2020-04-22 21:05 ` Chris Murphy
2020-04-23 10:49 ` Filipe Manana
2020-04-23 11:42 ` Marek Behun
2020-04-23 11:51 ` Filipe Manana
2020-04-23 12:05 ` Marek Behun
2020-04-23 12:39 ` Filipe Manana
2020-04-23 19:50 ` Chris Murphy
2020-04-23 5:57 ` Andrei Borzenkov [this message]
2020-04-23 6:45 ` Marek Behun
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