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snmp issue with 6.6.0
Since upgrading to 6.6.0 I'm no longer able to monitor disk usage using snmp. I've been using cacti to graph my 312 for the last 2 years. The system disk and the two disk in the NAS no longer app...
+1 here.
my array is not visible in neither Observium, nor plain snmpwalk...
given the fact I upgraded to 6.6.0 solely to be able to configure SNMP location, I'm really impressed by the fact that I lost the most important functionality in return to this capability...
Done a bit more digging, Readynas 6.5.2 to 6.6.0 included an upgrade to Debian 8, Jessie. The snmpd version shipping with debian Jessie dropped support for btrfs file systems, this is a bug and has been fixed. There is a fix in later versions of snmpd 5.7.3+, currently installed 5.7.2.1+dfsg-1
http://lists.alioth.debian.org/pipermail/pkg-net-snmp-devel/2015-December/001680.html
https://sourceforge.net/p/net-snmp/bugs/2502/
It'll probably just work when they upgrade to Stretch, but that's probably going to be a while. Between now and then we'll have to hope that snmpd is upgraded in a Readynas update.
I've fixed this on my NAS, used some of my spare time over the holidays.
I built a Debian Jessie VM (amd64) and then followed the build instructions here to rebuild snmpd
apt-get build-dep snmpd
cd /usr/src
apt-get source libsnmp-base libsnmp5 snmpd
edits as below then
debian/rules binary
Used the source patch here to edit the source
https://sourceforge.net/p/net-snmp/bugs/2502/
edited the debian/rules to add --enable-ipv6 as it was building without IPv6 support for some reason.
Copied the .deb files to my nas and installed (dpkg -i ...) it's all working fine now and I don't seem to have broken anything.
libsnmp30_5.7.2.1+dfsg-1_amd64.deb
snmpd_5.7.2.1+dfsg-1_amd64.deb
snmpwalk results for before and after patch as closely as I'd expect and I can see the btrfs data now.
All my data is backed up elsewhere, I suggest you do the same before trying this.
good job.
i was thinking about the same, but my RN10400 has an ARM CPU and i've got only a couple of Raspberry Pis. but it'd be easier than cross-compiling. maybe i'll give it a try on my only R-Pi 2 if i have some time in January...
ironically, i've bought this NAS in order NOT to have to customize ANYTHING and have simple wizards for EVERYTHING. the idea was that it'll all work out of the box.
i'd be able to solve this problem on my old MacMini 2006 (750 GB HDD + openSUSE 13.2 serving files using NFS & CIFS) or HP Microserver Gen8 (4x 4 TB in RAID 5 + CentOS 6 serving files using NFS & CIFS + virtualBox etc.) in a couple of minutes. maybe i should have bought another Microserver and load NAS4Free onto it :(
v.6.6.1 has been released yesterday. no SNMP thing is mentioned in its release notes...
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