>>> Rudi Daemen <flud...@gmail.com> schrieb am 22.01.2016 um 11:10 in Nachricht <camuee3xtqk4tt109xtegtv5wrythpcfcpwghynabb9fjw6y...@mail.gmail.com>: > Hi, > > I have been using snmpd to monitor disk activity on my storage machine > (Debian 8, running mdadm raid6), for this, I've been using the > "DiskIODevice" and "hrStorage" trees. This has been working like a > charm except for one issue: > The disk device index appears to change every reboot. So every time > the storage server needs to reboot I have to rewrite the monitoring > configuration on the statistics collector to keep the data accurate. > > The layout of the system is as follows: > /dev/sda up until /dev/sdf are the raid disks, holding two sets: > /dev/md0 and /dev/md1. > /dev/sdg is the boot device (USB flashdisk). > > For some reason the order in which /dev/sda to /dev/sdf, /dev/md0 and > /dev/md1 are indexed changes every boot. The only disk that > consistently gets the same index number is /dev/sdg.
That's a feature of Linux: If you want consistent disk monitoring, you wounldn't use /dev/sda, but some other path like /dev/disk/by-*. However it seems those paths are not exported via SNMP. > Note: the physical device paths do not change, port 1 on the disk > controller will always map to /dev/sda, port 2 to /dev/sdb, etc. This > detection is consistent in the system. > > For the hrStorage, the solution seems to be to use the dskTable tree > and manually configure each filesystem in the snmpd config. However, > this only seems to work for actual filesytems, not for individual > disks Yes . > Is there a way to get a persistent index (or manually configured > indexing) on the "DiskIODevice" trees? Hack the source (host/hr_disk.c)? Regards, Ulrich > > Kind regards, > Rudi Daemen > > ------------------------------------------------------------------------------ > Site24x7 APM Insight: Get Deep Visibility into Application Performance > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > Monitor end-to-end web transactions and take corrective actions now > Troubleshoot faster and improve end-user experience. Signup Now! > http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 > _______________________________________________ > Net-snmp-users mailing list > Net-snmp-users@lists.sourceforge.net > Please see the following page to unsubscribe or change other options: > https://lists.sourceforge.net/lists/listinfo/net-snmp-users ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 _______________________________________________ Net-snmp-users mailing list Net-snmp-users@lists.sourceforge.net Please see the following page to unsubscribe or change other options: https://lists.sourceforge.net/lists/listinfo/net-snmp-users
