foobar2devnull
ADSM.ORG Member
Hi guys,
I am a bit confused on how to backup a Linux server running Zenoss. I need to backup RRD files on a noatime file system. Seeing as how an RRD file do not change is size over time and seeing how the access date is not refreshed due to the noatime flag, can the files be backed up?
The following documetation seems to say this can not be done if I understand correctly.
I did the following tests knowing that the RRD file is updated ever 5 minutes or so. We do an incremental backup on a daily basis that we keep for 30 days.
1. | 07/04/2016 10:53:53 16.00 KB A /opt/zenoss/perf/Daemons/PRA
2. | 10/20/2016 08:47:52 34.60 KB A /opt/zenoss/perf/Daemons/PRA/zenjmx_queuedTasks.rrd
3. | 10/20/2016 08:39:09 34.60 KB I /opt/zenoss/perf/Daemons/PRA/zenjmx_queuedTasks.rrd
4. | 10/17/2016 15:39:02 34.60 KB I /opt/zenoss/perf/Daemons/PRA/zenjmx_queuedTasks.rrd
5. | 07/04/2016 10:53:53 34.60 KB I /opt/zenoss/perf/Daemons/PRA/zenjmx_queuedTasks.rrd
I ran two manual backups (2,3) and something is Zenoss was done that caused the RRD file to be recreated (4).
So my questions are:
I am a bit confused on how to backup a Linux server running Zenoss. I need to backup RRD files on a noatime file system. Seeing as how an RRD file do not change is size over time and seeing how the access date is not refreshed due to the noatime flag, can the files be backed up?
The following documetation seems to say this can not be done if I understand correctly.
I did the following tests knowing that the RRD file is updated ever 5 minutes or so. We do an incremental backup on a daily basis that we keep for 30 days.
1. | 07/04/2016 10:53:53 16.00 KB A /opt/zenoss/perf/Daemons/PRA
2. | 10/20/2016 08:47:52 34.60 KB A /opt/zenoss/perf/Daemons/PRA/zenjmx_queuedTasks.rrd
3. | 10/20/2016 08:39:09 34.60 KB I /opt/zenoss/perf/Daemons/PRA/zenjmx_queuedTasks.rrd
4. | 10/17/2016 15:39:02 34.60 KB I /opt/zenoss/perf/Daemons/PRA/zenjmx_queuedTasks.rrd
5. | 07/04/2016 10:53:53 34.60 KB I /opt/zenoss/perf/Daemons/PRA/zenjmx_queuedTasks.rrd
I ran two manual backups (2,3) and something is Zenoss was done that caused the RRD file to be recreated (4).
So my questions are:
- Can TSM backup a file that does not change in size and where the access time does not change?
- How come a manual incremental backup does backup the file but not a scheduled one? (# sleep 300 && dsmc i /opt/zenoss/perf/Daemons/PRA/zenjmx_queuedTasks.rrd)
- What alternatives would you recommend? The partition is on an LVM so would an image backup be worth considering?