On 05/25/2012 06:35 PM, Alexander Block wrote:
Hello,
(this is a resend with proper CC for linux-fsdevel and linux-kernel)
I would like to start a discussion on atime in Btrfs (and other
filesystems with snapshot support).
As atime is updated on every access of a file or directory, we
On Tue, May 29, 2012 at 10:14 AM, Boaz Harrosh bharr...@panasas.com wrote:
Sounds like a real problem. I would suggest a few remedies.
1. Make a filesystem persistent parameter that says noatime/relatime/atime
So the default if not specified on mount is taken as a property of
the FS (mkfs
Le 25 May 2012 ? 11:42, Josef Bacik a écrit:
Just mount with -o noatime, there's no chance of turning something like that
on
by default since it will break some applications (notably mutt). Thanks,
I've just updated the wiki:
https://btrfs.wiki.kernel.org/index.php/Mount_options#Performance
Hello,
(this is a resend with proper CC for linux-fsdevel and linux-kernel)
I would like to start a discussion on atime in Btrfs (and other
filesystems with snapshot support).
As atime is updated on every access of a file or directory, we get
many changes to the trees in btrfs that as always
On Fri, May 25, 2012 at 05:35:37PM +0200, Alexander Block wrote:
Hello,
(this is a resend with proper CC for linux-fsdevel and linux-kernel)
I would like to start a discussion on atime in Btrfs (and other
filesystems with snapshot support).
As atime is updated on every access of a file
On Fri, May 25, 2012 at 5:42 PM, Josef Bacik jo...@redhat.com wrote:
On Fri, May 25, 2012 at 05:35:37PM +0200, Alexander Block wrote:
Hello,
(this is a resend with proper CC for linux-fsdevel and linux-kernel)
I would like to start a discussion on atime in Btrfs (and other
filesystems with
On Fri, May 25, 2012 at 6:28 PM, Andreas Dilger adil...@dilger.ca wrote:
On 2012-05-25, at 9:59, Alexander Block abloc...@googlemail.com wrote:
Are you talking about the atime for the primary copy, or the atime for the
snapshots? IMHO, the atime should not be updated for a snapshot unless it
On Fri, May 25, 2012 at 6:32 PM, Freddie Cash fjwc...@gmail.com wrote:
On May 25, 2012 9:00 AM, Alexander Block abloc...@googlemail.com wrote:
On Fri, May 25, 2012 at 5:42 PM, Josef Bacik jo...@redhat.com wrote:
On Fri, May 25, 2012 at 05:35:37PM +0200, Alexander Block wrote:
Hello,
On 2012-05-25, at 9:59, Alexander Block abloc...@googlemail.com wrote:
On Fri, May 25, 2012 at 5:42 PM, Josef Bacik jo...@redhat.com wrote:
On Fri, May 25, 2012 at 05:35:37PM +0200, Alexander Block wrote:
Hello,
(this is a resend with proper CC for linux-fsdevel and linux-kernel)
I would
On Fri, May 25, 2012 at 5:35 PM, Alexander Block
abloc...@googlemail.com wrote:
Hello,
(this is a resend with proper CC for linux-fsdevel and linux-kernel)
I would like to start a discussion on atime in Btrfs (and other
filesystems with snapshot support).
As atime is updated on every
On 05/25/2012 09:10 PM, Alexander Block wrote:
Just to show some numbers I made a simple test on a fresh btrfs fs. I
copied my hosts /usr (4 gig) folder to that fs and checked metadata
usage with btrfs fi df /mnt, which was around 300m. Then I created
10 snapshots and checked metadata usage
On Fri, May 25, 2012 at 10:27 PM, Peter Maloney
peter.malo...@brockmann-consult.de wrote:
On 05/25/2012 09:10 PM, Alexander Block wrote:
Just to show some numbers I made a simple test on a fresh btrfs fs. I
copied my hosts /usr (4 gig) folder to that fs and checked metadata
usage with btrfs fi
On Fri, May 25, 2012 at 10:42 PM, Alexander Block
abloc...@googlemail.com wrote:
On Fri, May 25, 2012 at 10:27 PM, Peter Maloney
peter.malo...@brockmann-consult.de wrote:
On 05/25/2012 09:10 PM, Alexander Block wrote:
Just to show some numbers I made a simple test on a fresh btrfs fs. I
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