On 6/23/2015 11:23 AM, Mauricio Tavares wrote:
AIX does use lvm a lot. Main difference is their filesystem
allows live shrinking. Kinda nice to dynamically size a partition
depending on needs, as opposite to the so often suggested approach of
formatting the entire drive as one single partition. Symlinking is
great until whatever the destination is does not mount. I myself use
lvm as disks for my vm clients, which xenserver does too (not my fault
I promise!). It is faster than an image file.
While it has the same concepts, physical volumes, volume groups, logical
volumes, the LVM in AIX shares only the initials with Linux. I've heard
that Linux's LVM was based on HP-UX's design.
in AIX, the LVM is tightly integrated with file system management, so
you issue the command to grow a file system, and it automatically grows
the underlying logical volume. the OS itself can automatically grow
file systems when its installing software. Also, in AIX, the volume
manager is the raid manager, you say 'copies = 2' as an attribute of a
LV, and data is mirrored.
--
john r pierce, recycling bits in santa cruz
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