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How to clear for filesystem spaces when the IB switch (NM2-36P and NM2-GW) filesystems become full or almost full. (Doc ID 1934039.1)

Last updated on APRIL 04, 2019

Applies to:

Exadata X3-2 Hardware - Version All Versions and later
Sun Network QDR InfiniBand Gateway Switch - Version All Versions and later
Sun Datacenter InfiniBand Switch 36 - Version All Versions and later
Oracle SuperCluster T5-8 Hardware - Version All Versions and later
Exalogic Elastic Cloud X4-2 Hardware - Version X4 to X4 [Release X4]
Information in this document applies to any platform.

Goal

How to clear for filesystem spaces when the IB switch (NM2-36p and NM2-GW) filesystems become full or almost full.

When an IB switch whose root filesystem (/) and tmpfs filesystem (/tmp/) become full or almost full, there will be risks to its functionality from a resourcing point of view.  Running out of resources can cause potential hangs or other side effects, for example, when the root file system is full and users are changing, say user passwords via passwd, it is possible for /etc/shadow to become corrupt or disappear totally.

For NM2-36P IB switches, / incorporates everything besides /dev/shm/ and /tmp/, where /dev/shm/ and /tmp/ are 2 other tmpfs filesystems.

For NM2-GW IB gateway switches, / incorporates everything besides /config/, /dev/shm/, /tmp/, and /var/log/, where /config/ and /var/log/ are 2 other on-disk filesystems separate to /.

Solution

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In this Document
Goal
Solution
References


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