Module lvm

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Utility functions for LVM.

Functions

[hide private]

None or str

CheckVolumeGroupSize(vglist, vgname, minsize)
Checks if the volume group list is valid.

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tuple

LvmExclusiveCheckNodePvs(pvs_info)
Check consistency of PV sizes in a node for exclusive storage.

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LvmExclusiveTestBadPvSizes(small, big)
Test if the given PV sizes are permitted with exclusive storage.

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Imports: constants

Function Details

[hide private]

CheckVolumeGroupSize(vglist, vgname, minsize)

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Checks if the volume group list is valid.

The function will check if a given volume group is in the list of volume groups and has a minimum size.

Parameters:

vglist (dict) - dictionary of volume group names and their size
vgname (str) - the volume group we should check
minsize (int) - the minimum size we accept

Returns: None or str

None for success, otherwise the error message

LvmExclusiveCheckNodePvs(pvs_info)

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Check consistency of PV sizes in a node for exclusive storage.

Parameters:

pvs_info (list) - list of LvmPvInfo objects

Returns: tuple

A pair composed of: 1. a list of error strings describing the violations found, or an empty list if everything is ok; 2. a pair containing the sizes of the smallest and biggest PVs, in MiB.

LvmExclusiveTestBadPvSizes(small, big)

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Test if the given PV sizes are permitted with exclusive storage.

Parameters:

small - size of the smallest PV
big - size of the biggest PV

Returns:

True when the given sizes are bad, False otherwise