Hi!
Just had a success upgrading a RAID0 to RAID5. Details below.
Quick question: in my machine, hda and hdg are both the same model hard drives
with the same geometry; however, hde is a larger drive with different geometry.
Shouldn't all the raid 5 devices be the same size? If I lose hde3, will I have
missing 'holes' in my filesystem? Or is Linux smart about that?
Here is the output of raidreconf:
raidreconf -o raidtab.old -n raidtab.new -m /dev/md0
Working (\) [00938304/00938304] [############################################]
Source drained, flushing sink.
Reconfiguration succeeded, will update superblocks...
Updating superblocks...
handling MD device /dev/md0
analyzing super-block
disk 0: /dev/hda1, 60051568kB, raid superblock at 60051456kB
disk 1: /dev/hde3, 60067035kB, raid superblock at 60066944kB
disk 2: /dev/hdg1, 60051568kB, raid superblock at 60051456kB
Array is updated with kernel.
Disks re-inserted in array... Hold on while starting the array...
Maximum friend-freeing depth: 2
Total wishes hooked: 938304
Maximum wishes hooked: 1047
Total gifts hooked: 938304
Maximum gifts hooked: 1047
Congratulations, your array has been reconfigured,
and no errors seem to have occured.
raidtab.old:
raiddev /dev/md0
raid-level 0
persistent-superblock 1
nr-raid-disks 2
chunk-size 128
nr-spare-disks 0
device /dev/hdg1
raid-disk 0
device /dev/hda1
raid-disk 1
raidtab.new:
raiddev /dev/md0
raid-level 5
persistent-superblock 1
nr-raid-disks 3
parity-algorithm left-symmetric
chunk-size 128
nr-spare-disks 0
device /dev/hda1
raid-disk 0
device /dev/hde3
raid-disk 1
device /dev/hdg1
raid-disk 2
Thanks. I hope this information is useful to someone.
--
Jeffrey Baitis - Associate Software Engineer
Evolution Robotics, Inc.
130 West Union Street
Pasadena CA 91103
tel: 626.535.2776 | fax: 626.535.2777 | baitisj@evolution.com
-
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
