On Fri, Feb 21, 2014 at 6:50 PM, Phoenix, Merka <merka.phoe...@hp.com> wrote: >>> add disks to an LSI raid array periodically to increase the amount of >>> available space for business needs >>> sdc1 is a PV in a VG that holds production data and must not become >>> unavailable at any time >>> How do we grow sdc1, online? > > If you are using the Logical Volume Manager (LVM ) on Linux, you should not > have to grow the PV each time. > Instead, carve Logical Units (LUNs) out of the RAID array and present them to > the operating system as disk devices that can be initialized as physical > volumes (PVs).
My raid controller doesn't permit adding luns to an exiating array that has a single lun. It requires it to bave originated as a multiple-lun array. Even if it did permit this, I need the number of PVs to stay fairly consistent for logistical reasons. I cannot have a new one come into existance every time I grow the array. > While you can resize the H/W RAID "online", and add/remove PVs to a VG > "online", you still need to unmount a filesystem before resizing both the LV > and the corresponding filesystem that was created on the LV. Attempting to > resize a filesystem that is mounted and actively being used is just asking > for data corruption. Not true, most filesystems support online grow/expansion. The ones I'm using do, and it works fine, and is fairly quick. I am aware of how lvm, and filesystems work. I don't need help with those. I'm asking one thing: how to get the kernel to notice that a partition has grown. _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
