On Sat, Nov 13, 2010 at 6:02 PM, Sirtaj Singh Kang <[email protected]>wrote:
> > On 13-Nov-10, at 12:39 PM, Raj Mathur (राज माथुर) wrote: > [snip] > > He wanted a formula. He has not got a formula. >> > > Here's a formula: > > y = x * 1.0158 > > Explanation: > > I decided to check the ext3 overhead empirically, since I not keen to delve > into the resize2fs sources. I've attached a simple python script that I used > on a bunch of machines to measure the difference between block device size > (reported by /proc/partitions) > and fs size (as reported by statfs). It currently reports on all mounted > ext2 and ext3 filesystems. > Great to know this because i have never seen this ever. But i want to know one thing that when i studied this, found that we keep this size bigger because of metadata. And if it is correct metadata will increase with the size of PV and VG then how can a specific formula be derived. > > I might be doing something really dumb, but it looks like there is 1.56-58% > overhead for almost all ext3 filesystems over 1G in size created with > default mkfs flags. It gets higher for smaller filesystems. Note that the > journal overhead may not be included in this value. > > If anyone gets different values or finds any errors in the attached script > I'd appreciate a note. > > End of story. >> > > It's kind of a boring story. > > -Taj. > > > > > _______________________________________________ > Ilugd mailing list > [email protected] > http://frodo.hserus.net/mailman/listinfo/ilugd > > Sorry if i wrote rudely anywhere but my intention was not to disrespect anyone. Everybody is doing his/her work at their respected places and is here to learn from other and contribute for others. So their shouldn't be any matter of unnecessary dispute type of discussions. -- Regards RAKESH "Allow Your Own Inner Light to Guide You" _______________________________________________ Ilugd mailing list [email protected] http://frodo.hserus.net/mailman/listinfo/ilugd
