mdadm, however, shows something very strange - the original raid is broken into three raid, and the combination is very puzzling. Under Fedora 15, lvm, pvscan, vgscan see nothing but the irrelevant boot drive. I installed Fedora 15 on a new boot drive, on which the installation program also created an lvm (/dev/vg_20110912a/) for me, but again that's irrelevant. The kernel boot parameter that I have kernel /vmlinuz-2.6.30.10-105.2.23.fc11.x86_64 ro root=/dev/mapper/vg_localhost-lv_root rhgb quiet Unused devices: ~]# mdadm -examine /dev/sdb1Ģ 2 8 33 2 active sync ~]# fdisk -lu 2>&1ĭisk /dev/dm-0 doesn't contain a valid partition tableĭisk /dev/dm-1 doesn't contain a valid partition tableĭisk /dev/md127 doesn't contain a valid partition tableĭisk /dev/dm-2 doesn't contain a valid partition tableĭisk /dev/sda: 250.0 GB, 250000000000 bytesĢ55 heads, 63 sectors/track, 30394 cylinders, total 488281250 sectors Md127 : active raid5 sdb1 sdc1 sdd1ġ953134208 blocks level 5, 64k chunk, algorithm 2 This may take a while.įound volume group "lvm-tb-storage" using metadata type lvm2įound volume group "vg_localhost" using metadata type ~]# mdadm -detail -scanĪRRAY /dev/md/127_0 metadata=0.90 ~]# ls -al /dev/md
VG UUID wqIXsb-KRZQ-eRnH-JvuP-VdHk-XJTG-DSWimc
Total: 2 / in use: 2 / in no VG: 0 # lvscanĪCTIVE '/dev/lvm-tb-storage/tb' inheritĪCTIVE '/dev/vg_localhost/lv_root' inheritĪCTIVE '/dev/vg_localhost/lv_swap' ~]# vgdisplay The following is the settings that I got from the system (mdadm, pvscan, lvscan, etc.) ~]# cat ~]# pvscan The volume group that I created onto the raid disk is called /dev/lvm-tb-storage/. The volume group of the boot drive (/dev/vg_localhost/) is irrelevant. Specifically, the raid disk /dev/md/127_0 is built from /dev/sdb1, /dev/sdc1, /dev/sdd1, where each partition takes the whole disk space. I had a regular boot drive (/dev/sda) and an lvm built on raid 5 (/dev/sdb, /dev/sdc, /dev/sdd). Fedora 11 can still see the Raid and everything works.
When I upgraded, I used a new boot drive for Fedora 15, so I can physically swap the boot drives and boot into either Fedora 11 or 15. I think I must have missed something so I resort to group wisdom here.
Softraid 5 vs upgrade#
Lately I bit the bullet and upgrade my OS from Fedora 11 to Fedora 15, and I've been trying very hard to figure out why Fedora 15 can't see the Raid setup that I created in Fedora 11.
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