I assume he is using HW RAID. In which case, Linux wouldn't "see" the physical drives per se'. It sounds like something went wrong before all this happened (ie ls not working etc). I'd wait the 6hrs as you have little choice. Once you get a good volume, you can move on. It sound ugly, though. Sorry, not much more help. <<JAV>> ---------- Original Message ----------- From: "Dominic RIVERA" <Dominic.Rivera@xxxxxxxxxxx> To: <redhat-list@xxxxxxxxxx> Sent: Tue, 14 Oct 2003 13:01:51 -0700 Subject: Re: HELP !!! raid 5 problem > You should be able to hotswap the drive and then verify integrity before > the system goes down. > > Obviously in some cases you won't be able to like when the drive > fails when the system is powered down. Sometimes it is possible to reconstruct > a raid-5 array that has, but I'd be very careful fomr this point on > out, you're in some seriously dangerous territory. > > One problem you *might* be running into that you may be able to fix > is if you're manually assigning scsi id's to the drives. Linux > assigns device names based on the order that they are found, so if > you put in a new disk in a different place, or if your new drive was > discovered in a different order then your array might be trying to > reconstruct itself wrong. > > Your comment about ls not working makes me think you had more than just > a single driver error. > > Were you booting off of a raid5 array? You shouldn't be able to put your > /boot partition on (software) raid5 as far as I know. > > What drive was it that failed, your boot drive? Did you install > lilo/grub onto multiple disks? > > Any more information about your config could be helpful. > > -Dominic > > Dominic Rivera > (503) 947-7308 > dominic.rivera@xxxxxxxxxxx > >>> redhat@xxxxxxxxxxx 10/14/03 12:32 PM >>> > Simpson, Doug wrote: > > >I have a compaq proliant ml 350 that is running RH 7.0. It is RAIDed > to 5, > >however, one of the 4 drives crashed yesterday. We hot swapped the old > for a > >new. Rebooted and crossed our figures. The LILO screen comes up and > then > >flashes into a text screen saying "LOADING LINUX ...". It does this > about 5 > >or 6 times and then stops on the "LOADING LINUX ....." screen. > >We cannot access the machine. > >We can see the drives flashing and it looks like the one drive is > fgoing > >through the rebuilding process. > >With a 4 drive RAID5 we should still be able to get in - no? > >Yesterday when the drive crashed the machine was not very usable - ie. > could > >not run "ls" or "find". > >This is a bit strange for a RAID5 setup. > >Compaq/hp has told us to wait 20 minutes a gig for the rebuild - 6 > hours. > >We are wondering if this six hours will be wasted time. > >Has anyone seen this behavior before? > >Any thoughts would be much appreciated. > >We think the boot sector is corrupt and that is why it will not boot. > So we > >are waitning fo rhte stripping to finish and then fix teh boot sector. > > > >Anyone? > > > >Thanks, > >Doug > > > > > > > > > Well, the RAID set is not working then. The whole purpose of RAID is > to avoid data loss. If 1 drive out of 5 is lost, the RAID set can > still reconstruct the missing data using parity information, however, > you will > > suffer a large performance loss for this. The rebuild process should > have no affect on the integrity of the raid set, just a performance hit. > > Something is either configured wrong or faulty. > > -CC > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list ------- End of Original Message ------- -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
