On Fri, 2008-02-15 at 07:23 +1100, Steven Haigh wrote: > > -----Original Message----- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > > Behalf Of Scott Silva > > Sent: Friday, 15 February 2008 7:15 AM > > To: centos@centos.org > > Subject: [CentOS] Re: Kernel 2.6.18-53.1.13.el5 fails on network. > > > > on 2/14/2008 10:38 AM Steven Haigh spake the following: > > > I have found the issue with this - and now I feel quite dumb. > > > > > > In this box, I keep a second HDD (/dev/hdc) which is mirrored nightly > > from > > > the primary HDD (/dev/hda). > > > > > > This is an exact copy - initially created via dd, then kept up to > > date via > > > rsync on a nightly basis. This is so that if the primary HDD fails, I > > can > > > change the system to use /dev/hdc and be up and running after a > > > reboot/forced power cycle. > > > > > > What was happening is that both /dev/hda3 and /dev/hdc3 have the > > LABEL=/ - > > > which means it would be a random guess as to which one got mounted. > > > > > > After changing the root=LABEL=/ in grub.conf to root=/dev/hda3, all > > works > > > perfectly. > > > > > > Man I miss the days when we used device names, not labels ;) > > > > > > -- > > Why not do a software raid with the drives? That way it is constantly > > up to date instead of a nightly rsync. > > Software RAID doesn't help when a different admin installs a package that > they shouldn't and overwrites critical files (say the glibc libraries) and > hoses the entire system. During the many years of using linux, the most > downtime has been caused by humans - not hardware failures. > > Having a nightly rsync between drives allows me to restore the system to a > snapshot in a simple reboot. I can then restore to within 6 hours from our > remote tape backup system. RAID only helps against hardware failure - not > human failure. > > -- > Steven Haigh
Yes, you are correct that RAID doesn't help with human failings. However, LVM[1], backups, and change control management do ;) 1: http://www.linux.org/docs/ldp/howto/LVM-HOWTO/snapshots_backup.html --Tim _________________________________________________________________________ / If you make people think they're thinking, they'll love you; but if you \ \ really make them think they'll hate you. / ------------------------------------------------------------------------- \ \ \ \ /\ ( ) .( o ). _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
