Thomas - I hate to tell you the bad news but the BIOS/Option ROM does not complete a mirror rebuild on ISW. The BIOS simply changes the metadata status to 'rebuilding' so that a software tool like DMRAID in Linux or iMSM in Windows can rebuild the drive. The following link details the information about a failed RAID 1 in Windows (may not help but it will give you an idea about how the rebuild with fakeraids work) http://www.intel.com/support/chipsets/imsm/sb/CS-021014.htm There are no rebuild capabilities in dmraid at the moment. There is effort to have this functionality in the near future. - Eric >-----Original Message----- >From: ataraid-list-bounces@xxxxxxxxxx [mailto:ataraid-list- >bounces@xxxxxxxxxx] On Behalf Of Thomas Schwanhäuser >Sent: Sunday, August 12, 2007 5:34 AM >To: ataraid-list@xxxxxxxxxx >Subject: How to do a recovery of a degraded RAID1 > >Hi all, > >I currently have two servers both have been setup with a RAID1 >configuration in the motherboard's BIOS. One server uses NVIDIA and the >other ISW. Both of them have a failed hard drive and I'm having >difficulties to get the replaced drive resynced. > >Because both now behave in the same way, I concentrate with the following >explanation on the server using the ISW metaformat. > > >What I did do so far was to replace the drive, go to the RAID Bios of Intel >and set the array to be rebuild. After this, the status on each boot of the >array is "Rebuilding". However, I was not able to see any progress, even >after a week, the RAID Bios still showed the status to be "Rebuilding" on a >reboot. > >I found other posts on this list which say, that one has let the >motherboards BIOS let to the recovery process. So now I'm wondering how >this can be actually performed. I went to the BIOS and kept it open for >24hrs (the hard drive is 160GB big), now after a reboot, it's still >"rebuilding". However checking the content, it still looks like that >nothing happened. > >Here is some debug information: > >************ FDISK shows no partition table on second drive >******************** > >[root@web4 ~]# fdisk -l /dev/sda > >Disk /dev/sda: 164.6 GB, 164696555520 bytes >255 heads, 63 sectors/track, 20023 cylinders >Units = cylinders of 16065 * 512 = 8225280 bytes > > Device Boot Start End Blocks Id System >/dev/sda1 * 1 13 104391 83 Linux >/dev/sda2 14 20022 160722292+ 8e Linux LVM >[root@web4 ~]# fdisk -l /dev/sdb > >Disk /dev/sdb: 164.6 GB, 164696555520 bytes >255 heads, 63 sectors/track, 20023 cylinders >Units = cylinders of 16065 * 512 = 8225280 bytes > >Disk /dev/sdb doesn't contain a valid partition table > >*************************************************************************** >******** > > >dmraid believes the set is "ok", although it should be degraded. > > >[root@web4 ~]# dmraid -s >*** Group superset isw_eabdhggeia >--> Subset >name : isw_eabdhggeia_Volume0 >size : 321667072 >stride : 128 >type : mirror >status : ok >subsets: 0 >devs : 2 >spares : 0 > > >[root@web4 ~]# dmraid -r >/dev/sda: isw, "isw_eabdhggeia", GROUP, ok, 321672957 sectors, data@ 0 >/dev/sdb: isw, "isw_eabdhggeia", GROUP, ok, 321672957 sectors, data@ 0 > > >*************************************************************************** >****** > > >The system is a Fedora 6 installation (2.6.20-1.2962.fc6) with > >dmraid version: 1.0.0.rc13 (2006.10.11) debug >dmraid library version: 1.0.0.rc13 (2006.10.11) >device-mapper version: 4.11.0 > > >My understanding from reading other posts is that there is no way at the >moment to do an "online rebuild". So if anyone has some tips for me how the >rebuild can be performed for an ISW and/or NVIDIA installation, I would >much appreciate it. > >Furthermore I suggest to add a note to the manpages of dmraid a note that >online rebuilds are not yet supported. > > > >Many thanks for your help in advance. > > > >Best regards, > > >Thomas > >_______________________________________________ >Ataraid-list mailing list >Ataraid-list@xxxxxxxxxx >https://www.redhat.com/mailman/listinfo/ataraid-list _______________________________________________ Ataraid-list mailing list Ataraid-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ataraid-list
