On Wed, Oct 31, 2012 at 09:02:15PM +0800, Jeff Liu wrote:
I propose this because OCFS2 report shared space in this way combine with
du(1).
An old patch set to teach du(1) aware of reflinked file:
https://oss.oracle.com/pipermail/ocfs2-devel/2010-September/007293.html
Patch looks ok, the
On 11/06/2012 06:45 AM, David Sterba wrote:
On Wed, Oct 31, 2012 at 09:02:15PM +0800, Jeff Liu wrote:
I propose this because OCFS2 report shared space in this way combine with
du(1).
An old patch set to teach du(1) aware of reflinked file:
On Wed, Oct 31, 2012 at 10:30:22AM +0800, Jeff Liu wrote:
One idea is to mark those cloned extents as FIEMAP_EXTENT_SHARED so that
we can go through a file to figure out how many extents are shared
through fiemap(2), and calculate the real storage(fs/subvolume) footprint
in the end.
This will
On 10/31/2012 07:31 PM, David Sterba wrote:
On Wed, Oct 31, 2012 at 10:30:22AM +0800, Jeff Liu wrote:
One idea is to mark those cloned extents as FIEMAP_EXTENT_SHARED so that
we can go through a file to figure out how many extents are shared
through fiemap(2), and calculate the real
Hi,
How could one find out if 2 files share any extents on a btrfs file system?
A more generic variation of the above: How to list files on the same
file system/subvolume sharing content?
Thanks,
Gábor
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On Tue, Oct 30, 2012 at 04:20:05PM +0100, Gábor Nyers wrote:
Hi,
How could one find out if 2 files share any extents on a btrfs file system?
A more generic variation of the above: How to list files on the same
file system/subvolume sharing content?
You have direct (read-only) access to
On Tue, October 30, 2012 at 16:39 (+0100), Hugo Mills wrote:
It should be possible to walk through the
extents of a given file, and (I think) follow back-refs from the
extent back to the other files that share it.
You wish :-) Backrefs are not made to walk them while the file system is online.
On 10/30/2012 11:20 PM, Gábor Nyers wrote:
Hi,
How could one find out if 2 files share any extents on a btrfs file system?
A more generic variation of the above: How to list files on the same
file system/subvolume sharing content?
Indeed ocfs2 already has the feature where you can get
On 10/31/2012 08:40 AM, Liu Bo wrote:
On 10/30/2012 11:20 PM, Gábor Nyers wrote:
Hi,
How could one find out if 2 files share any extents on a btrfs file system?
A more generic variation of the above: How to list files on the same
file system/subvolume sharing content?
One idea is to mark
