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Zfs: Difference between revisions
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ZFS is a combined [https://en.wikipedia.org/wiki/File_system file system] and [https://en.wikipedia.org/wiki/Logical_Volume_Manager_(Linux) logical volume manager] designed by [https://en.wikipedia.org/wiki/Sun_Microsystems Sun Microsystems]. ZFS can scale to very large file system sizes and supports compression. | ZFS is a combined [https://en.wikipedia.org/wiki/File_system file system] and [https://en.wikipedia.org/wiki/Logical_Volume_Manager_(Linux) logical volume manager] designed by [https://en.wikipedia.org/wiki/Sun_Microsystems Sun Microsystems]. ZFS can scale to very large file system sizes and supports compression. | ||
ZFS greatly simplifies the process of increasing a filesystem size as required. The simpliest approach is to add new volumes to your VM and then add them to your ZFS filesystem to grow the size of your file system. | |||
=Installing ZFS= | =Installing ZFS= | ||
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=Notes= | =Notes= | ||
While in theory it should be possible to use ZFS with resizing volumes in OpenStack in practices this has not been straight forward and is better to be avoided if possible. | *While in theory it should be possible to use ZFS with resizing volumes in OpenStack in practices this has not been straight forward and is better to be avoided if possible. | ||
*While there is no hard limit to how many volumes you can attach to your VM it is best to keep the number of volumes attached to a reasonable number. 19 attached volumes has been tested and shown to work well the Queens version of OpenStack. | |||
*Having a pool of two or more volumes may provide improved IO performance. | |||