How come in LVM without striping, with Reiser FS you can resize filesystems without unmounting them? I'm just curious.
-----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Hall, Ken (IDS DCS PE) Sent: Monday, January 24, 2005 10:33 AM To: [email protected] Subject: Re: Any caveats moving root filesystem to LVM? If you use LVM without striping, and Reiser FS on top of that, you don't even have to unmount the filesystems to resize them. Striping takes away ALL of this advantage. We ran some tests with striped vs. non-striped filesystems, and generally got better results with striping, but I don't have numbers anymore. Regardless, I'm not sure if you would get much benefit out of striping the root FS, since the benefit of striping is in parallelizing I/O. The files in the root FS tend to be small, and are either read infrequently (at boot time), or read SO frequently that they tend to stay in the buffer cache. Write activity against the root FS should be EXTREMELY limited by design (although we had some products that stubbornly insist on putting things like dumps in /). ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
