Comments on: Abusing Solaris attempt #2: stressing out ZFS, PART1 http://www.parolski.com/2008/03/11/abusing-solaris-attempt-2-stressing-out-zfs-part1/ Faith, Solaris, and Chicken Korma, by Anton Parol Tue, 06 Jan 2009 09:16:25 +0000 http://wordpress.org/?v=2.7 hourly 1 By: Anton Parol http://www.parolski.com/2008/03/11/abusing-solaris-attempt-2-stressing-out-zfs-part1/comment-page-1/#comment-36 Anton Parol Thu, 20 Mar 2008 20:06:31 +0000 http://www.parolski.com/2008/03/11/abusing-solaris-attempt-2-stressing-out-zfs-part1/#comment-36 The compression ratio didnt improve because no compression was succesfully applied! The file only consisted of those "holes" (i.e. all the block pointers for it were null) and so the files actually consumed no space!!! (As per Jeff Bonwick's explanation here): http://www.parolski.com/2008/03/15/abusing-solaris-attempt-2-stressing-out-zfs-part2/#comments) The compression ratio didnt improve because no compression was succesfully applied! The file only consisted of those “holes” (i.e. all the block pointers for it were null) and so the files actually consumed no space!!! (As per Jeff Bonwick’s explanation here):
http://www.parolski.com/2008/03/15/abusing-solaris-attempt-2-stressing-out-zfs-part2/#comments)

]]> By: James Dickens http://www.parolski.com/2008/03/11/abusing-solaris-attempt-2-stressing-out-zfs-part1/comment-page-1/#comment-35 James Dickens Wed, 19 Mar 2008 11:52:51 +0000 http://www.parolski.com/2008/03/11/abusing-solaris-attempt-2-stressing-out-zfs-part1/#comment-35 here is another test. http://uadmin.blogspot.com/2005/11/zfs-spoils-prank.html turns out that zfs teats strings of 0's as a "hole" in the file and doesn't use any space to store the hole or very little anyway. not sure why you are not getting any improvement in your compression ratio i see 2.0x frequently in text files. here is another test.
http://uadmin.blogspot.com/2005/11/zfs-spoils-prank.html

turns out that zfs teats strings of 0’s as a “hole” in the file and doesn’t use any space to store the hole or very little anyway.

not sure why you are not getting any improvement in your compression ratio i see 2.0x frequently in text files.

]]> By: James Legg http://www.parolski.com/2008/03/11/abusing-solaris-attempt-2-stressing-out-zfs-part1/comment-page-1/#comment-21 James Legg Sat, 15 Mar 2008 18:12:26 +0000 http://www.parolski.com/2008/03/11/abusing-solaris-attempt-2-stressing-out-zfs-part1/#comment-21 My preferred method for confusing Solaris is to change the order of the boot disks in the BIOS and then edit live upgrade files by hand. As well as move zfs pools around between installs without exporting correctly - as of yet I have failed to kill my ZFS pool despite copious abuse - /tank has so far been a rather apt name for it. My preferred method for confusing Solaris is to change the order of the boot disks in the BIOS and then edit live upgrade files by hand. As well as move zfs pools around between installs without exporting correctly - as of yet I have failed to kill my ZFS pool despite copious abuse - /tank has so far been a rather apt name for it.

]]> By: Janina http://www.parolski.com/2008/03/11/abusing-solaris-attempt-2-stressing-out-zfs-part1/comment-page-1/#comment-16 Janina Wed, 12 Mar 2008 16:14:42 +0000 http://www.parolski.com/2008/03/11/abusing-solaris-attempt-2-stressing-out-zfs-part1/#comment-16 i absolutely understand waht the problem here is... i absolutely understand waht the problem here is…

]]> By: Janina http://www.parolski.com/2008/03/11/abusing-solaris-attempt-2-stressing-out-zfs-part1/comment-page-1/#comment-15 Janina Wed, 12 Mar 2008 16:14:18 +0000 http://www.parolski.com/2008/03/11/abusing-solaris-attempt-2-stressing-out-zfs-part1/#comment-15 what? what?

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