How does CDM determine changes to available disks on Linux?
Article ID: 197259
Updated On:
Products
NIMSOFT PROBES
DX Infrastructure Management
Issue/Introduction
How does the CDM probe test for changes to available disks?
Environment
Release : All versions
Component : UIM - CDM
Probe Version : All versions
Resolution
On Linux, CDM uses 2 built-in kernel calls to get disk information.
On the requested intervals the information is returned by making the below calls to the system.
The list of mounted filesystems is found using the system call getmntent().
https://www.man7.org/linux/man-pages/man3/getmntent.3.html
This essentially reads directly from /etc/fstab and /etc/mtab.
Space usage on the filesystems is found using the system call statvfs() against the filesystems once detected.
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