Bug 654384
| Summary: | hrStorageSize from HOST-RESOURCES-TYPES mib reports incorrect size for filesystems > 16TB | |||
|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 5 | Reporter: | Andrew Blum <ablum> | |
| Component: | net-snmp | Assignee: | Jan Safranek <jsafrane> | |
| Status: | CLOSED ERRATA | QA Contact: | BaseOS QE Security Team <qe-baseos-security> | |
| Severity: | medium | Docs Contact: | ||
| Priority: | low | |||
| Version: | 5.5 | CC: | jbastian, ksrot, ovasik, qguo, rdassen, rvokal | |
| Target Milestone: | rc | |||
| Target Release: | --- | |||
| Hardware: | x86_64 | |||
| OS: | Linux | |||
| Whiteboard: | ||||
| Fixed In Version: | Doc Type: | Bug Fix | ||
| Doc Text: | Story Points: | --- | ||
| Clone Of: | ||||
| : | 741789 748410 (view as bug list) | Environment: | ||
| Last Closed: | 2011-07-21 09:12:04 UTC | Type: | --- | |
| Regression: | --- | Mount Type: | --- | |
| Documentation: | --- | CRM: | ||
| Verified Versions: | Category: | --- | ||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | ||
| Cloudforms Team: | --- | Target Upstream Version: | ||
| Embargoed: | ||||
| Bug Depends On: | ||||
| Bug Blocks: | 741789, 748410 | |||
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Description
Andrew Blum
2010-11-17 18:22:25 UTC
(In reply to comment #0) > hrStorageAllocationUnits.9 = INTEGER: 4096 Bytes > hrStorageSize.9 = INTEGER: 1073708956 The hrStorageSize is certainly wrong, but there is not much I can do about it. It *must* be 32bit value, as defined in RFC 2790. In new Net-SNMP release it does not wrap at 2^31 but sticks to it if the real value is higher, i.e. reports 2147483647 for all devices bigger than 2 billion of allocation unit (instead of reporting 'size modulo 2^21'). We talked upstream about possibility of lying about hrStorageAllocationUnits - not to use the real allocation unit size, but compute a bigger one so hrStorageSize fits into 32 bits (and hrStorageAllocationUnits*hrStorageSize provide real size of the device), but it was generally frowned upon. Maybe the time for such measures has come... I have finally pushed it upstream, see http://net-snmp.svn.sourceforge.net/viewvc/net-snmp?view=revision&revision=19941 I'll port it back to RHEL5/6, but the new behavior will be off by default and it must be explicitly enabled in snmpd.conf. Andrew, thank you for the reproducer. I have tested this bug with net-snmp-5.3.2.2-12.el5 (see reproducer https://tcms.engineering.redhat.com/case/92807/) but snmpd does not see the XFS filesystem while the old version does. [root@rhel5 ~]# df Filesystem 1K-blocks Used Available Use% Mounted on /dev/mapper/VolGroup00-LogVol00 5999168 1928576 3760936 34% / /dev/vda1 101086 12547 83320 14% /boot tmpfs 513456 0 513456 0% /dev/shm /dev/vdb 107374050928 7328 107374043600 1% /mnt/hugefs [root@rhel5 ~]# rpm -q net-snmp net-snmp-5.3.2.2-12.el5 [root@rhel5 ~]# snmpwalk -v2c -c public -v 1 127.0.0.1 .1.3.6.1.2.1.25.2.3.1 | grep hrStorageDescr HOST-RESOURCES-MIB::hrStorageDescr.1 = STRING: Physical memory HOST-RESOURCES-MIB::hrStorageDescr.3 = STRING: Virtual memory HOST-RESOURCES-MIB::hrStorageDescr.6 = STRING: Memory buffers HOST-RESOURCES-MIB::hrStorageDescr.7 = STRING: Cached memory HOST-RESOURCES-MIB::hrStorageDescr.10 = STRING: Swap space HOST-RESOURCES-MIB::hrStorageDescr.31 = STRING: / HOST-RESOURCES-MIB::hrStorageDescr.35 = STRING: /boot [root@rhel5 ~]# rpm -q net-snmp net-snmp-5.3.2.2-9.el5 [root@rhel5 ~]# snmpwalk -v2c -c public -v 1 127.0.0.1 .1.3.6.1.2.1.25.2.3.1 | grep hrStorageDescr HOST-RESOURCES-MIB::hrStorageDescr.1 = STRING: Memory Buffers HOST-RESOURCES-MIB::hrStorageDescr.2 = STRING: Real Memory HOST-RESOURCES-MIB::hrStorageDescr.3 = STRING: Swap Space HOST-RESOURCES-MIB::hrStorageDescr.4 = STRING: / HOST-RESOURCES-MIB::hrStorageDescr.5 = STRING: /boot HOST-RESOURCES-MIB::hrStorageDescr.6 = STRING: /mnt/hugefs # snmpwalk -v2c -c public -v 1 127.0.0.1 hrFSTable | grep '\.3' HOST-RESOURCES-MIB::hrFSIndex.3 = INTEGER: 3 HOST-RESOURCES-MIB::hrFSMountPoint.3 = STRING: "/mnt/hugefs" HOST-RESOURCES-MIB::hrFSRemoteMountPoint.3 = "" HOST-RESOURCES-MIB::hrFSType.3 = OID: HOST-RESOURCES-TYPES::hrFSOther HOST-RESOURCES-MIB::hrFSAccess.3 = INTEGER: readWrite(1) HOST-RESOURCES-MIB::hrFSBootable.3 = INTEGER: false(2) HOST-RESOURCES-MIB::hrFSStorageIndex.3 = INTEGER: 6 HOST-RESOURCES-MIB::hrFSLastFullBackupDate.3 = STRING: 0-1-1,0:0:0.0 HOST-RESOURCES-MIB::hrFSLastPartialBackupDate.3 = STRING: 0-1-1,0:0:0.0 Moving to 'assigned', XFS needs to be fixed An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2011-1076.html An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2011-1076.html |