No. Hard links are alternative names for an inode: when lucene
replaces a file, it is creating a new (underlying) inode/file, and
the backup "link" points to the old one.
Don't think of hard links as "links", but additional logical names
for the same physical data.
cheers,
-Mike
On 10-Aug-07, at 5:50 PM, Wu, Daniel wrote:
So, does it mean the backup could have documents marked as deleted
because they are deleted from the main index?
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Yonik
Seeley
Sent: Friday, August 10, 2007 5:44 PM
To: solr-user@lucene.apache.org
Subject: Re: is snapshot/backup consistent (reliable) on the index
server?
On 8/10/07, Wu, Daniel <[EMAIL PROTECTED]> wrote:
I have some concern with solr using hard link to perform snapshot and
backup on the indexing box.
When referring to snapshot in contexts other than solr, it usually
mean some database state which can be revert to when necessary.
Since
solr use hard link to create snapshot on the master indexing box, the
older snapshot image could change if Lucene changed any file shared
between the index directory and the snapshot directory.
Right. By design, lucene never changes index files it has written.
Some
files, like .del files for deleted documents, can be completely
replaced
however.
-Yonik
