On Wednesday, 30 April 2003, at 18:16:02 -0700, Alberto wrote: > # cat /proc/mdstat > Personalities : [linear] [raid0] [raid1] [raid5] [multipath] > read_ahead 1024 sectors > md4 : active raid0 md3[3] md2[2] md1[1] md0[0] > 143372288 blocks 512k chunks > md3 : active raid1 sdi[1] sdh[0] > 35843584 blocks [2/2] [UU] > md2 : active raid1 sdg[1] sdf[0] > 35843584 blocks [2/2] [UU] > md1 : active raid1 sde[1] sdd[0] > 35843584 blocks [2/2] [UU] > md0 : active raid1 sdc[1] sdb[0] > 35843584 blocks [2/2] [UU] > unused devices: <none> > > # pvcreate /dev/md0 > # pvcreate /dev/md1 > # pvcreate /dev/md2 > # pvcreate /dev/md3 > # vgcreate vg01 /dev/md[0-3] > In short, you set up a RAID1+0, four RAID1 devices bounded together in one big RAID0 (md4). But next, you configure md[0-3] as PVs, instead of just creating a PV from md4, the higher level RAID device. You should just do: # pvcreate /dev/md4 # vgcreate vg01 /dev/md4 And then create LV from this new VG (vg01). Should work, and you get high performance (RAID0 md4), protection agains physical disk failures (between one and four disk crashes, depends on luck), and the ability to hot create, modify and destroy "partitions" (LVM). Hope it helps. -- Jose Luis Domingo Lopez Linux Registered User #189436 Debian Linux Sid (Linux 2.5.69) _______________________________________________ linux-lvm mailing list linux-lvm@sistina.com http://lists.sistina.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
