[nycbug-talk] MSNBC on the decline of technology jobs

alex at pilosoft.com alex
Wed Jun 22 15:02:19 EDT 2005

On Wed, 22 Jun 2005, Michael Shalayeff wrote:

> > > tracks files and their parts. It uses a B-Tree data structure to
> > > track files. Because of it's B-tree data structure it can quickly
> > > find a file or all it's parts.
> > Actually, inodes don't have much to do with btrees. The specific
> > implementation may (now you are getting into ufs vs ext2 vs jfs etc).  
> > Inode just has a list of physical blocks associated with this file.
> it is not "just a list of blocks"... in fact it does not even have all
> the block numbers in it the block list is less then a half of info
> stored in the inode.
Well, I didn't say it was. We were just discussing disk storage. 

> > > If you already have the filesystem you may need to copy the files
> > > and re-do the filesystem. You could also use a mount point to move
> > > some of the files to a new partition.
> > Correct. Could get more points for noting that some filesystems don't
> > use static inodes and have infinite number available.
> this is also wrong. there is always a limit. for example all the inodes
> have to be stored somewhere there is your limit on the number of inodes.
Incorrect. Get out of from your little bsdworld and look at, say, 
reiserfs. http://en.wikipedia.org/wiki/ReiserFS#Design

(Note that inode is just an object, so if you have disk space, you can 
have as many inodes as can fit there). 

When I say 'infinite', I obviously mean 'no fixed limit'.

> > > > * You screwed up boot block and server won't boot. You have the original
> > > > OS CD. How do you boot off the CD the OS on the current hard drive? [very
> > > > os-dependent, but in most cases boot -a will prompt you for root fs]
> > > 
> > > Use the install CD to fix the boot block.
> > on linux, root=/dev/zzz, on bsd boot -a. Fixing i'd prefer an answer
> > that'd say 'grubinstall' or lilo or installboot
> boot -a has nothing to do w/ repairing a boot block. one does not need
> root mounted as root to do that.
Grr. See the original question. 
> one can boot into any root and then just fsck+mount the damaged root for
> repair.
I know we don't agree on other things, but its not an excuse to try to 
misinterpret what I say and claim that I'm wrong. 

Love you too,

More information about the talk mailing list