On Wed, Nov 27, 2013 at 11:44 AM, <m.roth at 5-cent.us> wrote: > Gene Poole wrote: > > I'm running CentOS 5.9 x86_64 on a machine I built myself that has 6 SATA > > II hard drives (4 - 1 TB drives; 2 - 1.5 TB drives) all in several RAID-1 > > arrays. These arrays were created when I did the original installation > > with CentOS 5.1 and each created partition (both standard and LVM) were > > built raid 1. > > > > Due to some things happening around the house that required most of my > > attention, I saw some alerts concerning drive /dev/sdb but I didn't have > > time to address it and since I am running raid 1... One of the tings > that > > happened was my home took a lightening strike and we were down for 4 > days. > > You *do* have the system on a UPS, right...? > > > > When we got our electricity back and I brought the machine back up I > > noticed that there were only 5 drives listed and I wasn't getting any > > more alerts. What was /dev/sdb was no longer listed with any command > > (fdisk; cat /proc/mdstat; mdadm --list). > > > > I do have a spare drive and my questions are: > > > > Anyone know how I can find the serial number of the bad drive? > > Once replaced, what is the best way to get the partitions recreated? > > Of the bad one? No. The other option would be to either use smartctl to > find the serial numbers of all the rest. Recreate? Make it identical to > smartctl is the tool for this job. Or look at the label on the disk. > one of the others... actually, I think there's a script to use with parted > that can clone a drive's partitions. > Once you swap in the spare drive, you can use sfdisk to clone the partition layout. sfdisk -d /dev/sdX | sfdisk /dev/sdY where sdX is the healthy disk in whichever software raid1 array and sdY is the new spare drive. >From there you'll just add the partition(s) on the new disk to the proper array with mdadm. > > mark > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > -- ---~~.~~--- Mike // SilverTip257 //