Hi, Hammer File System was Developed by the DragonFlyBSD project as a step towards creating an Operating system which will support easy clustering of services and allow live migration of Services from one Hardware to another without service disruption.
Below is a presentation of its features by a DragonFlyBSD Developer http://www.wolfpond.org/ http://dl.wolfpond.org/Hammer-Presentation.en.pdf I have been using DragonFlyBSD in my company since June 2009 ( over 2 years now ) for backup and other purposes. Following the Development version by being on the mailinglist i never had to go through major upgrade cycles and the rolling release feeling was great. It does not take great knowledge in Unix to use BSDs and some linux folks say. You can read how a simple person such as I ( who have no background education in computers ) acheived this here. http://leaf.dragonflybsd.org/mailarchive/users/2010-09/msg00083.html A real world example when the de-dup feature saved me by recaliming 30% of Disk Space from a 99% full file system is in a small time here. http://leaf.dragonflybsd.org/mailarchive/users/2011-07/msg00023.html http://leaf.dragonflybsd.org/mailarchive/users/2011-07/msg00026.html One of the main objections of using a BSD is that it does not have a great package management system like Debian's APT. Actually this accusation is made by people who do not know much about BSDs. So here below is a live screen shot of 'pkgin' in actions as I upgrade packages on my backup server from pkgsrc-2011Q2 to the new stable pkgsrc-2011Q3 =================================== dfly-bkpsrv# pkgin update database for http://avalon.dragonflybsd.org/packages/i386/DragonFly-2.13/pkgsrc-2011Q3/All is up-to-date dfly-bkpsrv# pkgin full-upgrade calculating dependencies... done. mysql-server-5.1.58 (to be installed) conflicts with installed package mysql-server-5.1.57. proceed ? [y/N] y mysql-server-5.1.57 (to be installed) conflicts with installed package mysql-server-5.1.57. proceed ? [y/N] y mysql-client-5.1.58 (to be installed) conflicts with installed package mysql-client-5.1.57. proceed ? [y/N] y 87 packages to be upgraded: ap2-perl-2.0.5nb1 ap22-perl-2.0.5nb1 ap22-php5-5.2.17 bison-2.4.3nb1 cyrus-sasl-2.1.23 distbb-0.40.0 gdbm-1.8.3nb1 gettext-tools-0.18.1.1 gnome-doc-utils-0.20.4nb1 gtk2+-2.24.4nb1 intltool-0.40.6nb1 isc-dhcpd-4.2.1p1 mk-configure-0.21.0nb1 mysql-server-5.1.57 nih-0.7.2 p5-DBD-mysql-4.019 p5-ExtUtils-MakeMaker-6.56nb1 p5-File-Temp-0.22nb1 p5-Test-Exception-0.29nb2 p5-Test-Warn-0.22 pbzip2-1.0.5 php5-dba-5.2.17 php5-dbx-5.2.17.1.1.0 php5-eaccelerator-5.2.17.0.9.6 phpmyadmin-2.11.11.3 pkgdiff-1.2 pkgin-0.4.2nb2 scmgit-1.7.5.4 sudo-1.7.6.2 apache-2.2.19nb1 aspell-0.60.6nb3 atk-1.32.0nb1 cdrtools-3.01alpha04 pkg_summary-utils-0.53.2 fftw-3.2.2nb1 freetds-0.82nb3 gdk-pixbuf2-2.22.1nb2 heimdal-1.1nb5 icu-4.8 isc-dhcp-4.2.1p1 libsndfile-1.0.24 lzo-2.05 p5-DBI-1.615 p5-Data-ShowTable-3.3nb6 p5-Locale-libintl-1.20nb2 p5-Sub-Uplevel-0.2200nb1 p5-Tree-DAG_Node-1.06nb2 p5-XML-Parser-2.40 p5-gettext-1.05nb6 p5-libwww-5.837 pbulk-base-0.42 pkg_install-20110215 pkg_summary-utils-0.53.2 pkglint-4.101 scmgit-docs-1.7.5.4 scmgit-base-1.7.5.4 scmgit-docs-1.7.5.4 sqlite3-3.7.6.3nb1 freetype2-2.4.4nb1 mysql-client-5.1.57 p5-Crypt-SSLeay-0.58 p5-Digest-SHA1-2.13nb1 p5-Error-0.17016nb1 p5-HTML-Parser-3.68 p5-HTML-Tagset-3.20nb2 p5-IO-Compress-2.033nb1 p5-IO-Socket-SSL-1.35 p5-URI-1.56 p5-enum-1.016nb2 p5-pkgsrc-Dewey-1.1nb1 pixman-0.20.2 png-1.5.3rc02 libgcrypt-1.4.6nb2 p5-Business-ISBN-2.05nb1 p5-Compress-Raw-Bzip2-2.033 p5-Compress-Raw-Zlib-2.033 p5-Digest-1.16nb1 p5-IO-Socket-INET6-2.65nb1 p5-Net-LibIDN-0.12nb2 p5-Net-SSLeay-1.36nb1 pcre-8.12 perl-5.12.2nb2 tcl-8.4.18 p5-Business-ISBN-Data-20081208nb1 p5-MIME-Base64-3.13 p5-Socket6-0.23nb1 p5-Test-Simple-0.96nb1 9 packages to be removed: ap2-perl-2.0.5nb1 mysql-server-5.1.57 pkgse-0.3nb1 pkg_notify-0.4.3 p5-libwww-5.837 p5-HTML-Parser-3.68 p5-URI-1.56 p5-Business-ISBN-2.05nb1 p5-Business-ISBN-Data-20081208nb1 110 packages to be installed: p5-Test-Simple-0.96nb2 p5-Business-ISBN-Data-20081208nb3 p5-MIME-Base64-3.13nb1 p5-Socket6-0.23nb2 libgcrypt-1.5.0 p5-Business-ISBN-2.05nb2 p5-Compress-Raw-Bzip2-2.037 p5-Compress-Raw-Zlib-2.037 p5-Digest-1.16nb2 p5-IO-Socket-INET6-2.67 p5-Net-LibIDN-0.12nb3 p5-Net-SSLeay-1.36nb2 pcre-8.13 perl-5.14.2 tcl-8.4.18nb1 freetype2-2.4.6 mysql-client-5.1.58 p5-Crypt-SSLeay-0.58nb1 p5-Digest-SHA1-2.13nb2 p5-Error-0.17016nb2 p5-HTML-Parser-3.68nb1 p5-HTML-Tagset-3.20nb3 p5-IO-Compress-2.033nb2 p5-IO-Socket-SSL-1.44 p5-URI-1.58 p5-enum-1.016nb3 p5-pkgsrc-Dewey-1.1nb2 pixman-0.22.2nb1 png-1.5.5 apache-2.2.21nb1 aspell-0.60.6.1 atk-2.0.1nb2 cdrtools-3.01alpha05 pkg_summary-utils-0.56.1 fftw-3.3 freetds-0.91 gdk-pixbuf2-2.24.0 heimdal-1.4nb1 icu-4.8.1 isc-dhcp-4.2.2 libsndfile-1.0.25 lzo-2.06 p5-DBI-1.616 p5-Data-ShowTable-3.3nb7 p5-Locale-libintl-1.20nb3 p5-Sub-Uplevel-0.2200nb2 p5-Tree-DAG_Node-1.06nb3 p5-XML-Parser-2.41 p5-gettext-1.05nb7 p5-HTTP-Date-6.00nb3 p5-LWP-MediaTypes-6.01nb3 p5-Encode-Locale-1.02nb2 p5-Mozilla-CA-20110904 p5-libwww-6.02 pbulk-base-0.43 pkg_install-20110805 pkg_summary-utils-0.56.1 pkglint-4.103 scmgit-docs-1.7.6.3 scmgit-base-1.7.6.3 scmgit-docs-1.7.6.3 sqlite3-3.7.7.1 ap2-perl-2.0.5nb2 ap22-perl-2.0.5nb2 ap22-php5-5.2.17nb1 bison-2.5nb1 cyrus-sasl-2.1.25 distbb-0.41.0 gdbm-1.9.1 gettext-tools-0.18.1.1nb2 gnome-doc-utils-0.20.6 gtk2+-2.24.6 intltool-0.41.1 isc-dhcpd-4.2.2 mk-configure-0.21.1 mysql-server-5.1.58 nih-0.9.1 p5-DBD-mysql-4.019nb1 p5-Parse-CPAN-Meta-1.4401 p5-File-Copy-Recursive-0.38nb2 p5-CPAN-Meta-2.112150 p5-ExtUtils-MakeMaker-6.59nb1 p5-File-Temp-0.22nb2 p5-Test-Exception-0.29nb3 p5-Test-Warn-0.22nb1 p5-WWW-RobotRules-6.01nb4 p5-Net-HTTP-6.01nb3 p5-LWP-Protocol-https-6.02nb4 p5-HTTP-Negotiate-6.00nb3 p5-HTTP-Message-6.02nb3 p5-HTTP-Daemon-6.00nb3 p5-HTTP-Cookies-6.00nb3 p5-File-Listing-6.02nb3 pbzip2-1.1.5 php5-dba-5.2.17nb1 php5-dbx-5.2.17.1.1.2 php5-eaccelerator-5.2.17.0.9.6.1 php53-zlib-5.3.8 php53-mysql-5.3.8 php53-mcrypt-5.3.8 php53-mbstring-5.3.8 php53-json-5.3.8 php53-gettext-5.3.8nb1 php53-gd-5.3.8nb1 php53-bz2-5.3.8 phpmyadmin-3.4.5 pkgdiff-1.3 pkgin-0.4.3 scmgit-1.7.6.3 sudo-1.7.7 (150M to download, 657M to install) proceed ? [y/N] y downloading packages... downloading p5-Test-Simple-0.96nb2.tgz: 0% ===================================== Thanks --Siju _______________________________________________ Indian Libre User Group Cochin Mailing List http://www.ilug-cochin.org/mailing-list/ http://mail.ilug-cochin.org/mailman/listinfo/mailinglist_ilug-cochin.org #[email protected]
