Minidisks on z/VM cannot span more than one physical DASD volume. Without a volume management system, this limits the size of a file system on Linux for zSeries to the size of a DASD volume. For a 3390 model 3, this translates to 2.3GB of available space for a Linux file system.
Volume management systems allow multiple DASD devices to be combined into a single Linux file system (and thereby overcome the single DASD volume size limit). This Tip describes how to configure Logical Volume Management (LVM) for Linux on zSeries.
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