Re: [CentOS] Growing HW RAID arrays, Online

2014-02-23 Thread James A. Peltier
- Original Message - | On Sun, Feb 23, 2014 at 8:33 AM, Nux! wrote: | > On 22.02.2014 22:27, James A. Peltier wrote: | >> | >> partprobe can rescan partitions, but it can't resize them. You | >> may | >> be able to use gparted or the parted text mode to resize | >> partitions | >> online.

Re: [CentOS] Growing HW RAID arrays, Online

2014-02-23 Thread Billy Crook
On Sun, Feb 23, 2014 at 8:33 AM, Nux! wrote: > On 22.02.2014 22:27, James A. Peltier wrote: >> >> partprobe can rescan partitions, but it can't resize them. You may >> be able to use gparted or the parted text mode to resize partitions >> online. > > Sadly you can't really do this without reboot.

Re: [CentOS] Growing HW RAID arrays, Online

2014-02-23 Thread Nux!
On 22.02.2014 22:27, James A. Peltier wrote: > > partprobe can rescan partitions, but it can't resize them. You may > be able to use gparted or the parted text mode to resize partitions > online. Sadly you can't really do this without reboot. I'd love to be wrong, but I hit the same problem in

Re: [CentOS] Growing HW RAID arrays, Online

2014-02-22 Thread Andrew Holway
On 20 February 2014 21:50, Billy Crook wrote: > We add disks to an LSI raid array periodically to increase the amount > of available space for business needs. I *would* highly recommend ZFS for this kind of application. The ability to dynamically expand the zpool (zpool is the zfs "volume manager

Re: [CentOS] Growing HW RAID arrays, Online

2014-02-22 Thread James A. Peltier
- Original Message - | On Sat, Feb 22, 2014 at 12:24 AM, James A. Peltier | wrote: | > The choice is yours. I use whole disk PVs myself. | | Indeed I did originally use whole-disk PVs. But Anaconda doesn't | support them so during a recent rebuild we went to partitions. I'm | prepared

Re: [CentOS] Growing HW RAID arrays, Online

2014-02-21 Thread Billy Crook
On Sat, Feb 22, 2014 at 12:24 AM, James A. Peltier wrote: > The choice is yours. I use whole disk PVs myself. Indeed I did originally use whole-disk PVs. But Anaconda doesn't support them so during a recent rebuild we went to partitions. I'm prepared to blame anaconda for that to an extent. B

Re: [CentOS] Growing HW RAID arrays, Online

2014-02-21 Thread James A. Peltier
- Original Message - | On Fri, Feb 21, 2014 at 6:50 PM, Phoenix, Merka | wrote: | 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. Don't use partitions. Use whole disk PVs

Re: [CentOS] Growing HW RAID arrays, Online

2014-02-21 Thread Billy Crook
On Fri, Feb 21, 2014 at 6:50 PM, Phoenix, Merka 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, onl

Re: [CentOS] Growing HW RAID arrays, Online

2014-02-21 Thread John R Pierce
On 2/21/2014 4:50 PM, Phoenix, Merka wrote: > Both the LV and the filesystem can be resized "on the fly" without rebooting, > but you still have to unmount the filesystem first before resizing either. this is not true for XFS, you can grow XFS online without unmounting it, with live activity.

Re: [CentOS] Growing HW RAID arrays, Online

2014-02-21 Thread Phoenix, Merka
Hi Billy, >> 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