ZFS allows quotas to be defined for each file system, but currently lacks the ability to define user and group quotas inside a file system (you can create one file system per user to get around this). This issue is being addressed, and user and group quotas will soon be part of opensolaris. Here is [...]
Ben Rockwood is awesome. If you haven’t had a chance to check out his blog, its a must read for any Solaris Admin. He gave a presentation at the Open Storage Summit about ZFS. (Video Here) Its worth the read / view for some indepth ZFS concepts. Joerg assisted in turning some of this [...]
A few chapters of the upcoming OpenSolaris Bible have been released. Specifically, looking through chapter 8 on ZFS, I came across this handy list of properties and their descriptions. File System Properties aclinherit– Inheritance of ACL entries aclmode– Modification of ACLs in a chmod(2) operation atime– Whether access times of files are updated when read [...]
ZFS uses the ZFS intent log (also referred to as a ZIL) to store synchronous writes. This has the advantage that a full transaction group doesn’t need to be written when a synchronous write occurs, and maximizes the use of I/O bandwidth. For some applications (databases come to mind), placing the ZIL on a dedicated [...]
The inability to remove devices from ZFS Zpools has been one of the most annoying / inflexiable things about ZFS. I once read a blogpost about somenone who added a USB flash stick into the root ZFS pool, and now the USB stick became a perminent fixture of the machine! There was no simple way [...]
Dennis Clarke blogged about an introduction to opensolaris 2008.05, IPS, and how using ZFS (and beadm) as your root file system provides advantages with system upgrades and multiple root file systems. Take a look at his blog post here if you haven’t yet seen IPS on opensolaris. A lot of people are really glad to [...]
