On 15-Apr-2014, at 6:52 pm, Nux! <[email protected]> wrote:
> On 15.04.2014 14:03, Shanker Balan wrote:
>> Comments inline.
>> On 07-Apr-2014, at 10:38 pm, Zack Payton <[email protected]> wrote:
>>> Damn, was hoping for JBOD.
>>> Additionally, I don't have a raid controller.
>>> Thanks anyhow.
>> Zack, you can use Linux software RAID to create your RAID10 stripe
>> and mount the volume under /var/lib/libvirt.
>> http://www.tldp.org/HOWTO/Software-RAID-HOWTO.html
>
> Yes, good, also LVM over the disks would work, too.
Good that you mentioned LVM.
LVM is certainly the way to go if you prefer Linux ext3/XFS.
My Linux NAS does LVM over md raid devices and managing the devices
and space has been really smooth.
/volume1/homes/shanu $ sudo pvdisplay
--- Physical volume ---
PV Name /dev/md2
VG Name vg1000
PV Size 4.08 TB / not usable 1.75 MB
Allocatable yes (but full)
PE Size (KByte) 4096
Total PE 1069631
Free PE 0
Allocated PE 1069631
PV UUID sEKkNg-uHGs-wrIn-Ycfd-t6zW-CQY0-Dm2J7X
--- Physical volume ---
PV Name /dev/md3
VG Name vg1000
PV Size 2.73 TB / not usable 3.56 MB
Allocatable yes (but full)
PE Size (KByte) 4096
Total PE 715389
Free PE 0
Allocated PE 715389
PV UUID Q43L0L-qDH4-51x6-SBrB-WviH-3gxw-KXLBMQ
/volume1/homes/shanu $ cat /proc/mdstat
Personalities : [raid1] [linear] [raid0] [raid10] [raid6] [raid5] [raid4]
md3 : active raid5 sdd6[0] sda6[2] sdb6[1]
2930237568 blocks super 1.2 level 5, 64k chunk, algorithm 2 [3/3] [UUU]
md2 : active raid5 sda5[6] sdd5[3] sdc5[5] sdb5[4]
4381210944 blocks super 1.2 level 5, 64k chunk, algorithm 2 [4/4] [UUUU]
md1 : active raid1 sda2[0] sdb2[1] sdc2[2] sdd2[3]
2097088 blocks [4/4] [UUUU]
md0 : active raid1 sda1[0] sdb1[1] sdc1[2] sdd1[3]
2490176 blocks [4/4] [UUUU]
unused devices: <none>
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