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From: David Pottage <david@electric-spoon.com>
To: Rodney Beede <mailinglist@rodneybeede.com>,
	linux-btrfs <linux-btrfs@vger.kernel.org>
Subject: Re: Shrinking virtual disk with btrfs on it
Date: Fri, 21 Jan 2011 19:43:47 +0000	[thread overview]
Message-ID: <4D39E1F3.5070903@electric-spoon.com> (raw)
In-Reply-To: <AANLkTimVGfP0UFgkTEtrqrc8RoPPoqgwu=x--KHa3Y9j@mail.gmail.com>

On 21/01/11 17:20, Rodney Beede wrote:
> Any tools to go about zeroing about the free space on a btrfs file
> system so I can shrink the VMware vmdk virtual disk?
>
> I ran the VMware command, but the dynamic disk is still really big.  I
> presume it is due to free space that isn't zeroed out.
Does btrfs issue TRIM commands to the underlying (virtual) block device?

I guess not yet, as otherwise you would not see this problem, as your
virtual storage device should catch them and discard the corresponding
virtual storage blocks.

-- 
David Pottage


  parent reply	other threads:[~2011-01-21 19:43 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-01-21 17:20 Shrinking virtual disk with btrfs on it Rodney Beede
2011-01-21 17:34 ` Hugo Mills
2011-01-22 18:27   ` Rodney Beede
2011-01-21 19:43 ` David Pottage [this message]
2011-01-22  8:28   ` Tomasz Torcz

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