#Xfs format install#

#Xfs format install#

If you're doing a fresh install of Knoppmyth, making your /myth partition XFS is trivial: at the end of the install when you get the 'Reboot?' message, don't reboot yet. First you need to install the XFS helper programs (XFS is in the kernel already for Ubuntu 9.10).ДЄpt-get install xfsprogs xfsdump For New KM Installs If you are setting up XFS in 'normal' Ubuntu you will need to set up the Mythtv filesystem after installing Ubuntu, probably best before you install Mythtv. Warning: Completing these steps on an existing box will destroy all your files! ONLY do this if you are installing to a new HD, or if you don't care about losing the data on the current HD!

XFS: A high-performance journaling filesystem.ДЇor more information on tweaking XFS, see:.

By contrast, I did lose data a few years ago on a power failure when I was using ext3. Upon restarting the box, I ran the disk check program (explained below) and didn't experience any detectable corruption. That said, I have experienced several 'dirty shutdowns' (due to thunderstorms and power outages) since switching to XFS. This statement is true to any file system (ext3, XFS, NTFS, FAT32, etc.) on any O/S (LINUX, UNIX, Windows, etc.) You should know that data corruption can occur to ANY filesystem that isn't cleanly shutdown, if the application does not properly sync out important data. I mention it because the possibility is there and that XFS might be more susceptible to this than ext3 (the jury is still out on this one). There is the potential for data corruption to occur, but that doesn't mean that it is certain to occur. if your power suddenly goes out and the box was writing data to the drive). Another potential negative of switching is the nature of the filesystem can allow for data loss if the box isn't shutdown cleanly (i.e. The potential rub is that you have to manually run it (explained below) if you encounter problems that you think may be corruption-related. This really isn't an issue since there is a supplied program that will check and repair XFS file systems. For one, fsck is not run by default at boot time like it is for ext3 - XFS is a journaling filesystem after all, and should not need boot-time repair. There are potential downsides to an XFS partition.

Metadata-heavy operations may be slower - not a problem for your video filesystem.

XFS partitions cannot be shrunk once they are made.

fsck is not run at boot time (is this really a disadvantage!).

XFS also allows you to defrag your partition which can also speed up access time to large files.

Deleting files that are stored on an XFS partition happens VERY rapidly and without your frontend waiting as the disk drives grinds away deleting the file under the default ext3 file system. The filesizes of both SD and HDTV content for example can be quite large, on the order of multi-gigs per hour. XFS really excels at handling large files like those you'll generate with mythtv (your recordings and video files).

Has been around for a long time, stable (ext4 is new and has had problems as at April 2010).

Allows users to defrag files to further minimize read/write times.

Minimizes both storage access time (HD read/write) and processing power (very low CPU usage).

Handles large files much better and more efficiently than ext3.

We recommend that you consider using XFS for your partition(s) that store large data files such as your MythTV recordings and videos.

If you are unfamiliar with filesystems or XFS then see XFS for an explanation. 5 Mounting the XFS filesystem with high performance options.3.2 For Existing KM Installs (auto upgrade).