search for: raidhotadd

I have a system that is RAID -1 configured as /dev/md0 is /dev/hda1 /dev/hdb1 /dev/md1 is /dev/hdb3 /dev/hdb3 it seems as though /dev/hda has failed.... I have another disk (identical model) that I can replace hda with. I know about the commands fdisk to repartion and raidhotadd /dev/md0 /dev/hda1 and raidhotadd /dev/md1 /dev/hda3 (to be ran after the system boots). BUT... how do I now get the system to boot since hda is not there to boot... I can certainly execute the fdisk and raidhotadd after it boots... How do I get it to boot. The hardware is a D865 intel motherbo...

...==================================================================== I need to add the 3rd partition, so I open documentation http://www.centos.org/docs/4/html/rhel-isa-en-4/s1-storage-rhlspec.html#S2-STORAGE-RAID-DAY2DAY (I know the RTFM ;-) But in chapter 5.9.9.2. they want tool caled "raidhotadd" What was my wonder when it is not included in CentOS 4.3 ===================================================================== # yum provides raidhotadd Searching Packages: Setting up repositories update 100% |=========================| 951 B 00:00 base...

...; > And when I try to mount the array: > > --8<-- > > EXT3-fs error (device md(9,1)): ext3_check_descriptors: Block bitmap for group 509 not in group (block 4294967295)! > > EXT3-fs: group descriptors corrupted ! > > --8<-- > > > > What should I do now? Raidhotadd the 4th device? Run e2fsck prior to > > that or afterwards? > > I would > fsck -n /dev/md1 > to non-distructively see how much damage there is. > > If that shows an uncomfortable large amount of damage, you could > assembling the array from a different triple of dev...

From looking at mdstat it appears I have a RAID partition missing. There are NO errors in /var/log/messages about disk errors or anything. What happened to my sda1??? I had a power outage last week. Any ideas??? Jerry more /proc/mdstat Personalities : [raid1] md1 : active raid1 sdb3[1] sda3[0] 236717696 blocks [2/2] [UU] md0 : active raid1 sdb1[1] 51199040 blocks [2/1] [_U]

Ext3 Journal oops & RAID-1 set losing sync. (Sent to both EXT3 and Linux-RAID since both are in use and seem possibly relevant) I have had a number of problems maintaining a software RAID-1 set on an IDE box I maintain; it seems that doing raidhotadd on the drive marked as invalid works each time though. However, I've had both errors about trying to read past the end of the disk/partition and at least one oops relating to the ext3 journalling code. I'm not sure either is related to the other, but not sure they're not either....

...ab and mark sda as usable: raiddev /dev/md0 raid-level 1 nr-raid-disks 2 persistent-superblock 1 chunk-size 8 device /dev/sda1 raid-disk 0 device /dev/sdb1 raid-disk 1 ... etc. Now add the partitions on sda as members using raidhotadd: # raidhotadd /dev/md0 /dev/sda1 Rinse and repeat for each partition, or use a tricky bash one liner :) The mirror is now syncing each partition in sequence. You can check the status of this process by periodically cating /proc/mdstat. Once each partition is synced your mirror is complete and...