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Hello I am having a strange problem with ubuntu server. I have install ubuntu server 10.04 (64-bit) on INTEL BOXD510MO motherboard as my fileserver. I only installed SSH and Samba roles on that server to have the system as simple as possible. Also I have update my system to its latest update (Ubuntu, Bios etc).
Since my motherboard only supports 2 Sata ports I have installed a raid controller ( to expand my sata ports. Please note that I am only using this controller for the extra Sata ports and not the raid functionality. In total I have 4 hard disks installed, two on the motherboard (including the boot partition) and two on the raid controller.

My problem is the following. On almost every reboot the system fails to boot because the UUIDs of the hard disks change!! In order to fix it the boot problem I have to manually recover the information in /etc/fstab. To make things even more complicate if I try to manually mount the partitions after boot using the UUID provided by using the command ls -l /dev/disk/by-uuid, I end up mounting another partition that the one specified by the UUID. For example consider the following

lrwxrwxrwx 1 root root 10 2013-03-12 08:14 2e29f46e-1a71-4423-842e-abc80bdf66b9 -> ../../sdd1
lrwxrwxrwx 1 root root 10 2013-03-12 08:14 4c689820-8bea-4274-99d1-f5826bdfedd5 -> ../../sdb1
lrwxrwxrwx 1 root root 10 2013-03-12 08:14 8bcf2054-b857-4743-8fe1-f5bcb96ce877 -> ../../sda3
lrwxrwxrwx 1 root root 10 2013-03-12 08:14 bd512215-aa4a-4794-8cbd-226202865725 -> ../../sda1
lrwxrwxrwx 1 root root 10 2013-03-12 08:14 beea943b-667a-473a-8f89-4c6ffce2f0b8 -> ../../sdc1
lrwxrwxrwx 1 root root 10 2013-03-12 08:14 fcf1c81c-6174-4205-a4fd-3955b5c8504f -> ../../sda5

Lets say that I mount the first UUID that points to sdd1 (2e29f46e-1a71-4423-842e-abc80bdf66b9 -> ../../sdd1) using the command sudo mount UUID=2e29f46e-1a71-4423-842e-abc80bdf66b9 /media/harddisk1 the result for example might be for the system to mount for /media/harddisk1 the sdc1 instead of the sdd1. After reboot the above pictures again changes, the UUID change to which partition they point to.

Since I have not that much expertise on Linux as you fine people have can someone clarify things a little bit? Is there a solution to my problem?

Thanks in advance,

03-12-2013, 06:34 AM
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