On 12/21/2015 08:50 AM, Bryn M. Reeves wrote: > Expanding an existing LUN may involve resizing partitions - that is > normally the step that makes this the more complicated route since > depending on system configuration and use it may not be easy to resize > the partition without downtime (the Linux kernel has for some time > enforced restrictions on resizing in-use partitions - device-mapper > devices and whole disk devices do not share this limitation). We use whole disks all the time :) > It's safe enough - it's just that the kernel generally won't let you > do it while the existing partition is active and in use. I'm glad to know that: one more reason to use whole disks. I know Red Hat favors partitions for PVs (as mentioned in various docs) but I've never been convinced by the arguments for it. > Expanding an existing partition may be seen as the "cleaner" option, > since it avoids creating additional PVs and associated labels and > metadata areas, but unless you are working with very large numbers of > devices it makes little difference to most operations. Excellent point. > Gluing lots of devices together is one of the main reasons for using a > volume manager and for typical uses it adds no appreciable overhead > or additional complexity. Thanks Bryn for your wonderful feedback. I appreciate it! All the best, Jorge _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
