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Full Discussion: lzjb compression in ZFS
Operating Systems Solaris lzjb compression in ZFS Post 302373950 by sushma pawar on Monday 23rd of November 2009 02:47:46 AM
Old 11-23-2009
lzjb compression in ZFS

Hi all,

I am working on a project based on ZFS. The aim of this project is to read the raw data on disk for data recovery purpose. I started by reading the ZFS documentation of Sun Solaris. I somehow reached UBERBLOCK array of first partiton, and now as given in the document I am reading the block pointers and trying to reach the meta object set. I am getting some structure after I read the Block pointers offset in UBERBLOCK and doing some calculation on that, but I am not sure of the structure. I Want to know about the exact calculations required to reach meta object set and reading the compressed bytes of meta object set. Thanks in advance.
 

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Bio::SeqIO::metafasta(3pm)				User Contributed Perl Documentation				Bio::SeqIO::metafasta(3pm)

NAME
Bio::SeqIO::metafasta - metafasta sequence input/output stream SYNOPSIS
Do not use this module directly. Use it via the Bio::SeqIO class. use Bio::SeqIO; # read the metafasta file $io = Bio::SeqIO->new(-file => "test.metafasta", -format => "metafasta" ); $seq = $io->next_seq; DESCRIPTION
This object can transform Bio::Seq::Meta objects to and from metafasta flat file databases. For sequence part the code is an exact copy of Bio::SeqIO::fasta module. The only added bits deal with meta data IO. The format of a metafasta file is >test ABCDEFHIJKLMNOPQRSTUVWXYZ &charge NBNAANCNJCNNNONNCNNUNNXNZ &chemical LBSAARCLJCLSMOIMCHHULRXRZ where the sequence block is followed by one or several meta blocks. Each meta block starts with the ampersand character '&' in the first column and is immediately followed by the name of the meta data which continues until the new line. The meta data follows it. All characters, except new line, are important in meta data. FEEDBACK
Mailing Lists User feedback is an integral part of the evolution of this and other Bioperl modules. Send your comments and suggestions preferably to one of the Bioperl mailing lists. Your participation is much appreciated. bioperl-l@bioperl.org - General discussion http://bioperl.org/wiki/Mailing_lists - About the mailing lists Support Please direct usage questions or support issues to the mailing list: bioperl-l@bioperl.org rather than to the module maintainer directly. Many experienced and reponsive experts will be able look at the problem and quickly address it. Please include a thorough description of the problem with code and data examples if at all possible. Reporting Bugs Report bugs to the Bioperl bug tracking system to help us keep track the bugs and their resolution. Bug reports can be submitted via the web: https://redmine.open-bio.org/projects/bioperl/ AUTHOR - Heikki Lehvaslaiho Email heikki-at-bioperl-dot-org APPENDIX
The rest of the documentation details each of the object methods. Internal methods are usually preceded with a _ next_seq Title : next_seq Usage : $seq = $stream->next_seq() Function: returns the next sequence in the stream Returns : Bio::Seq object Args : NONE write_seq Title : write_seq Usage : $stream->write_seq(@seq) Function: writes the $seq object into the stream Returns : 1 for success and 0 for error Args : array of 1 to n Bio::PrimarySeqI objects width Title : width Usage : $obj->width($newval) Function: Get/Set the line width for METAFASTA output Returns : value of width Args : newvalue (optional) perl v5.14.2 2012-03-02 Bio::SeqIO::metafasta(3pm)
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