Re: [Gluster-users] [Gluster-devel] Appending time to snap name in USS
We decided to append time-stamp with snapname when creating a snapshot by default. Users can override this with a flag no-timestamp, then snapshot will be created without appending time-stamp. So the snapshot create syntax would be like snapshot create snapname volname(s) [no-timestamp] [description description] [force] . Patch for the same can be found here http://review.gluster.org/#/c/9597/1. Regards Rafi KC On 01/09/2015 12:18 PM, Poornima Gurusiddaiah wrote: Yes, the creation time of the snap is appended to the snapname dynamically, i.e. snapview-server takes the snaplist from glusterd, and while populating the dentry for the .snaps it appends the time. Thanks, Poornima *From: *Anand Avati av...@gluster.org *To: *Poornima Gurusiddaiah pguru...@redhat.com, Gluster Devel gluster-de...@gluster.org, gluster-users gluster-users@gluster.org *Sent: *Friday, January 9, 2015 1:49:02 AM *Subject: *Re: [Gluster-devel] Appending time to snap name in USS It would be convenient if the time is appended to the snap name on the fly (when receiving list of snap names from glusterd?) so that the timezone application can be dynamic (which is what users would expect). Thanks On Thu Jan 08 2015 at 3:21:15 AM Poornima Gurusiddaiah pguru...@redhat.com mailto:pguru...@redhat.com wrote: Hi, Windows has a feature called shadow copy. This is widely used by all windows users to view the previous versions of a file. For shadow copy to work with glusterfs backend, the problem was that the clients expect snapshots to contain some format of time in their name. After evaluating the possible ways(asking the user to create snapshot with some format of time in it and have rename snapshot for existing snapshots) the following method seemed simpler. If the USS is enabled, then the creation time of the snapshot is appended to the snapname and is listed in the .snaps directory. The actual name of the snapshot is left unmodified. i.e. the snapshot list/info/restore etc. commands work with the original snapname. The patch for the same can be found @http://review.gluster.org/#/c/9371/ The impact is that, the users would see the snapnames to be different in the .snaps folder than what they have created. Also the current patch does not take care of the scenario where the snapname already has time in its name. Eg: Without this patch: drwxr-xr-x 4 root root 110 Dec 26 04:14 snap1 drwxr-xr-x 4 root root 110 Dec 26 04:14 snap2 With this patch drwxr-xr-x 4 root root 110 Dec 26 04:14 snap1@GMT-2014.12.30-05.07.50 drwxr-xr-x 4 root root 110 Dec 26 04:14 snap2@GMT-2014.12.30-23.49.02 Please let me know if you have any suggestions or concerns on the same. Thanks, Poornima ___ Gluster-devel mailing list gluster-de...@gluster.org mailto:gluster-de...@gluster.org http://www.gluster.org/mailman/listinfo/gluster-devel http://www.gluster.org/mailman/listinfo/gluster-devel ___ Gluster-users mailing list Gluster-users@gluster.org http://www.gluster.org/mailman/listinfo/gluster-users ___ Gluster-users mailing list Gluster-users@gluster.org http://www.gluster.org/mailman/listinfo/gluster-users
Re: [Gluster-users] [Gluster-devel] Appending time to snap name in USS
Yes, the creation time of the snap is appended to the snapname dynamically, i.e. snapview-server takes the snaplist from glusterd, and while populating the dentry for the .snaps it appends the time. Thanks, Poornima - Original Message - From: Anand Avati av...@gluster.org To: Poornima Gurusiddaiah pguru...@redhat.com, Gluster Devel gluster-de...@gluster.org, gluster-users gluster-users@gluster.org Sent: Friday, January 9, 2015 1:49:02 AM Subject: Re: [Gluster-devel] Appending time to snap name in USS It would be convenient if the time is appended to the snap name on the fly (when receiving list of snap names from glusterd?) so that the timezone application can be dynamic (which is what users would expect). Thanks On Thu Jan 08 2015 at 3:21:15 AM Poornima Gurusiddaiah pguru...@redhat.com wrote: Hi, Windows has a feature called shadow copy. This is widely used by all windows users to view the previous versions of a file. For shadow copy to work with glusterfs backend, the problem was that the clients expect snapshots to contain some format of time in their name. After evaluating the possible ways(asking the user to create snapshot with some format of time in it and have rename snapshot for existing snapshots) the following method seemed simpler. If the USS is enabled, then the creation time of the snapshot is appended to the snapname and is listed in the .snaps directory. The actual name of the snapshot is left unmodified. i.e. the snapshot list/info/restore etc. commands work with the original snapname. The patch for the same can be found @ http://review.gluster.org/#/c/9371/ The impact is that, the users would see the snapnames to be different in the .snaps folder than what they have created. Also the current patch does not take care of the scenario where the snapname already has time in its name. Eg: Without this patch: drwxr-xr-x 4 root root 110 Dec 26 04:14 snap1 drwxr-xr-x 4 root root 110 Dec 26 04:14 snap2 With this patch drwxr-xr-x 4 root root 110 Dec 26 04:14 snap1@GMT-2014.12.30-05.07.50 drwxr-xr-x 4 root root 110 Dec 26 04:14 snap2@GMT-2014.12.30-23.49.02 Please let me know if you have any suggestions or concerns on the same. Thanks, Poornima __ _ Gluster-devel mailing list gluster-de...@gluster.org http://www.gluster.org/ mailman/listinfo/gluster-devel ___ Gluster-users mailing list Gluster-users@gluster.org http://www.gluster.org/mailman/listinfo/gluster-users
Re: [Gluster-users] [Gluster-devel] Appending time to snap name in USS
It would be convenient if the time is appended to the snap name on the fly (when receiving list of snap names from glusterd?) so that the timezone application can be dynamic (which is what users would expect). Thanks On Thu Jan 08 2015 at 3:21:15 AM Poornima Gurusiddaiah pguru...@redhat.com wrote: Hi, Windows has a feature called shadow copy. This is widely used by all windows users to view the previous versions of a file. For shadow copy to work with glusterfs backend, the problem was that the clients expect snapshots to contain some format of time in their name. After evaluating the possible ways(asking the user to create snapshot with some format of time in it and have rename snapshot for existing snapshots) the following method seemed simpler. If the USS is enabled, then the creation time of the snapshot is appended to the snapname and is listed in the .snaps directory. The actual name of the snapshot is left unmodified. i.e. the snapshot list/info/restore etc. commands work with the original snapname. The patch for the same can be found @http://review.gluster.org/#/c/9371/ The impact is that, the users would see the snapnames to be different in the .snaps folder than what they have created. Also the current patch does not take care of the scenario where the snapname already has time in its name. Eg: Without this patch: drwxr-xr-x 4 root root 110 Dec 26 04:14 snap1 drwxr-xr-x 4 root root 110 Dec 26 04:14 snap2 With this patch drwxr-xr-x 4 root root 110 Dec 26 04:14 snap1@GMT-2014.12.30-05.07.50 drwxr-xr-x 4 root root 110 Dec 26 04:14 snap2@GMT-2014.12.30-23.49.02 Please let me know if you have any suggestions or concerns on the same. Thanks, Poornima ___ Gluster-devel mailing list gluster-de...@gluster.org http://www.gluster.org/mailman/listinfo/gluster-devel ___ Gluster-users mailing list Gluster-users@gluster.org http://www.gluster.org/mailman/listinfo/gluster-users
