On 09/28/2011 01:03 PM, Bruno Wolff III wrote: > On Wed, Sep 28, 2011 at 11:41:22 -0600, > Pete Travis<me@xxxxxxxxxxxxxx> wrote: >> Bash will expand $(inane -r) for you - you can pass it any kernel you have >> headers installed for. >> >> I wanted to jump in to suggest you reconsider motherboard driven fakeraid. >> The mainboard becomes a single point of failure, and replacing it or >> migrating the array can be problematic, especially with different chipset >> revisions or BIOS versions. >> >> I recommend you set up a mdadm array. Drivers are in the kernel, >> documentation is profuse, and management is fairly simple once you get the >> hang of it. The graphical installer can even do it for you. Use the array >> for /home and possibly /etc and /var, and keep your root filesystem separate >> from your important data. > There is a downside to using mdadm over fake raid and that is that you > can hit a bottleneck with the PCI bus as the data needs to be sent to > each disk drive that needs a copy of the data (or parity info) instead of > just once to the controller. Typically this will be twice as much data. > > That said, I use mdadm. I have done such things as drop one side of my > raid 1 mirrors, repartition that drive, set up new mirrors with encrypted > file systems, and copy over file system data, repartion the other disk, > add those partitions to the new mirrors. That's good info for anyone considering mdadm. What if the underlying bus is 32 bit pci-e? would than not help with the throughput so that "twice" the data output does not slow your down that much? Of course it would still be considerably slower than having a 32-bit pci-e raid controller. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
