From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hubert Kario Subject: Re: [RFC] btrfs auto snapshot Date: Thu, 23 Feb 2012 14:24:09 +0100 Message-ID: <1877276.9NitRBY2zL@k85hala03> References: <4E4B2452.9070407@oracle.com> <1483419.CO5JBoDgFX@bursa22> <4F462ADE.4040507@oracle.com> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart2380644.tagiL9g2aH"; micalg="sha256"; protocol="application/pkcs7-signature" Cc: linux-btrfs , Chris Mason To: Anand Jain Return-path: In-Reply-To: <4F462ADE.4040507@oracle.com> List-ID: --nextPart2380644.tagiL9g2aH Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="iso-8859-1" On Thursday 23 of February 2012 20:02:38 Anand Jain wrote: > autosnap code is available either end of this week or early > next week and what you will notice is autosnap snapshots > are named using uuid. >=20 > Main reason to drop time-stamp based names is that, > - test (clicking on Take-snapshot button) which took more > than one snapshot per second was failing. > - a more descriptive creation time is available using a > command line option as in the example below. > ----- > # btrfs su list -t tag=3D@minute,parent=3D/btrfs/sv1 /btrfs > /btrfs/.autosnap/6c0dabfa-5ddb-11e1-a8c1-0800271feb99 Thu Feb 23 13= :01:18 > 2012 /btrfs/sv1 @minute > /btrfs/.autosnap/5669613e-5ddd-11e1-a644-0800271feb99 Thu Feb 23 13:1= 5:01 > 2012 /btrfs/sv1 @minute ----- >=20 > As of now code for time-stamp as autosnap snapshot name is > commented out, if more people wanted it to be a time-stamp > based names, I don't mind having that way. Please do let me know. I'd say, that having it as configure option (do Samba-style snapshot na= ming=20 vs. uuid based) would be sufficient. The question remains what should b= e the=20 default. That being said, what use-case would require snapshots taken more often= than=20 every second? I doubt that you actually can do snapshots every second o= n a=20 busy file system, let alone more often. On lightly-used one they will b= e=20 identical and just clutter the name-space. Regards, --=20 Hubert Kario QBS - Quality Business Software 02-656 Warszawa, ul. 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