tag:blogger.com,1999:blog-38892787.post47073772663401167..comments2010-05-15T15:51:42.709+02:00Alexander Orlovhttps://profiles.google.com/102299455092306269473noreply@blogger.comBlogger8125tag:blogger.com,1999:blog-38892787.post-60341243470117672302010-05-15T15:51:42.703+02:002010-05-15T15:51:42.703+02:00is not need a grub modification?? And then give sudo update-grub like for the ext3 file system tuning???<br />I think so ....and I don&#39;t know how to change the grub2 !!!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-38892787.post-22475841568488522352009-06-02T16:53:16.278+02:002009-06-02T16:53:16.278+02:00My default setting was 0 (deactivated).<br /><br /><B>hdparm -W1 /dev/sda</B> may additionally boost the performance. Eventually you have to set -W1 in <I>/etc/hdparm.conf</I> because the system may reset this setting after reboot.Alexander Orlovhttp://www.blogger.com/profile/12810422593975325823noreply@blogger.comtag:blogger.com,1999:blog-38892787.post-62038001864559166402009-06-02T16:36:00.628+02:002009-06-02T16:36:00.628+02:00should I also run:<br />hdparm -W1 /dev/sda<br />with data=writeback as suggested here<br />http://ubuntuforums.org/showpost.php?p=6418463&amp;postcount=10<br />or not?<br /><br />Thanks!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-38892787.post-3378812140972014602009-04-28T09:31:00.000+02:002009-04-28T09:31:00.000+02:00Thanks for this. I have Ubuntu 9.04 running on ext4 on an SSD-equipped Dell X1.<br /><br />If you want to enable data=writeback on the root partition, you have first turn this journaling model on using tune2fs.<br /><br /># tune2fs -o journal_data_writeback /dev/sdxx<br /><br />Make sure you have dropped to single-user mode and mounted the fs readonly (or better, boot from a live CD and make the change from there).<br /><br />Provided you have done this and changed fstab, your system should boot no problem.<br /><br />I have also mounted /var/log as tmpfs to stop the logs writing to the disc all the time.<br /><br />AAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-38892787.post-11242275134497647832009-04-27T23:39:00.000+02:002009-04-27T23:39:00.000+02:00I have a 128GB SSD with Ubuntu on it running with these settings on my notebook. My system survived power outages and crashes without any data loss. However I would recommend you to backup your setup before you test these settings on your system.Alexander Orlovhttp://www.blogger.com/profile/12810422593975325823noreply@blogger.comtag:blogger.com,1999:blog-38892787.post-82220770741242439382009-04-27T21:54:00.000+02:002009-04-27T21:54:00.000+02:00hi!!! thanks for this tips, Just a question:<br />the option Data=writeback is like the default data mode on systems like ReiserFS. but i'm a bit worry about this because File system ReiserFS is a bit dangerous for the SSD. I'm right?<br /><br />The fact is that I have an EeePC 901 and want to uso EXT4 but I don't want to broke my ssd disk. What do you suggest me?<br /><br />thanks for all!Keteremillpariohttp://www.blogger.com/profile/04975648105455233386noreply@blogger.comtag:blogger.com,1999:blog-38892787.post-80386479325463577442009-04-25T22:18:00.000+02:002009-04-25T22:18:00.000+02:00Right, thanks! I have fixed this error.Alexander Orlovhttp://www.blogger.com/profile/12810422593975325823noreply@blogger.comtag:blogger.com,1999:blog-38892787.post-8471287507876909122009-04-25T20:55:00.000+02:002009-04-25T20:55:00.000+02:00i guess it's: <br />"ext4 noatime,barrier=0,data=writeback,nobh,commit=100,nouser_xattr 0 2"<br /><br />not:<br />"noatime,barrier=0,data=writeback,nobh,commit=100,nouser_xattr ext4 0 2"<br /><br />notice the params before ext4<br /><br />anyway, thanksAnonymousnoreply@blogger.com