[londonperl] A difficult filesystem
andy at hexten.net
Wed Jun 20 21:16:03 BST 2007
On 20 Jun 2007, at 20:40, Dirk Koopman wrote:
>> Which every cpio since the ark detects and correctly deals with:-
> and as (IIRC) tar and cpio are now effectively the same thing, if
> your target filesystem is big enough, you can do the other old
> fashioned thing which is tar the old filesystem across to the new
> one (don't forget the --exclude <mount point>) and then untar it in
Tried that. Memory problems and it was going to take two weeks
> And (having just tested it) cp -a correctly transfers hard links as
> well, but it does not do the --exclude so you end up going up your
> mobius bottle.
Yes - but they run out of memory as I said :)
Any kind of hard link processing is going to require linkage to be
remembered. Most tools remember it in memory - because that makes
sense for the vast majority of cases.
The Perl program I wrote to catalogue the disk to a SQLite DB is now
up to 44,000,000 dirents - most of which share an inode with ~30
other dirents. And I reckon it's only about a quarter done - if that.
Andy Armstrong, hexten.net
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