Hi Nelson, I saw the same symptoms just last weekend. A UPS malfunctioned and caused power fluctuations before finally dying (the irony of it all). After this, some servers (running CentOS on hardware RAID5) were not able to boot-up and just displayed the grub prompt. We booted from a Linux CD in rescue mode and ran fsck, it found lots and lots of errors. We decided it would be easier to just restore from backups. You do have backups, don't you? :-)
HTH, -eric BTW, are you related to the Serafica's of Burgundy? --- On Mon, 7/20/09, Nelson Serafica <[email protected]> wrote: > From: Nelson Serafica <[email protected]> > Subject: [plug] Hack or Hard Drive Error > To: "Plug" <[email protected]> > Date: Monday, July 20, 2009, 3:31 PM > > One of my machine stops from running. > I forgot the error on the screen (it was about the hard > disk). I just quickly restarted the machine. However, > when booting up I don't see the grub menu. Instead, it lead > me directly to grub shell (if that what is was called). I > see grub> on the screen. I tried > to press tab twice to check available commands but it was > very limited. It seems the OS or the kernel was not booted > at all. > > I remove the hard disk, put it to an external enclosure and > tried to mount it to one of my Linux Machine. When I do > "mount /dev/sda1 /mnt", it says > "mount: you must specify the filesystem type" so I command > "mount -t ext3 /dev/sda1 /mnt", it says: > > mount: wrong fs type, bad option, bad superblock on > /dev/sda1, > missing codepage or other > error > In some cases useful info > is found in syslog - try > dmesg | tail or so > > There's no error in dmesg but when I check syslog, it has > the ff: > > Jul 20 09:08:03 PHP kernel: hfs: unable to find HFS+ > superblock > Jul 20 09:18:04 PHP kernel: VFS: Can't find ext3 filesystem > on dev sda1. > > I usually install ext3 as my file system so I'm sure it was > ext3. If I'm not mistaken, hfs is for MAC but this is a > Linux Machine. > > I remove the hard drive and put it on a enclosure. I mount > it to another linux machine and try to run e2fsck. There's a > thousand of fix happen. It > took about almost two hours since this is a 160GB hard > drive. > > Now, there's no error when mounting the hard drive. The > only problem is some of the partition has no data after I > mount it though when I ran df it is > not empty. Affected partition is / and /var. My /usr is ok > and accessible. When I check the lost+found dir of the > affected dir, there is a lot of > files there usually made of numbers. > > This machine has no public ip that's why I'm not really > thinking of a hacking scenario though still a possibility. > > Could we say that this is a hard drive issue? There are > some dir on lost+found made of numbers and when I tried to > change to that dir, it just lead me > to / of my current machine. > > Any ideas? > > > TIA > > > > Nelson > > > _________________________________________________ > Philippine Linux Users' Group (PLUG) Mailing List > http://lists.linux.org.ph/mailman/listinfo/plug > Searchable Archives: http://archives.free.net.ph > _________________________________________________ Philippine Linux Users' Group (PLUG) Mailing List http://lists.linux.org.ph/mailman/listinfo/plug Searchable Archives: http://archives.free.net.ph
