It is documented elsewhere on the internet that by using non-standard ext4 filesystem options, a linux machine -- such as our kobo -- can potentially run its filesystem faster.
So, what options does it run by default?
Some are good, some are not what that blog recommends.
So, I decided to try to change it and share how to.
What you'll need is:
- ftp and telnet/ssh access to the device. The guides on the internet aren't perfect, if you want I can make a better todo (where better means it was easier for me...).
- a cross-compiled tune2fs with dependencies. I'm attaching those files which I scavenged from pre-compiled rmps openmamba repository. You can cross-compile them yourself, find them pre-compiled yourself (7zip opens rpms), or just get them from the zip I'll attach.
Instructions:
1. FTP to your kobo and put the contents of my zip somewhere. Since those files won't be needed after you've finished all steps, I just dumped them to the root of kobo's filesystem.
2. telnet/ssh into your kobo (I used putty) and run the following commands:
3. Modify the mount instruction to activate all the other options the blog suggests. Kobo doesn't use fstab but instead executes the mount command directly from /etc/init.d/rcS (line 5). My procedure for modifying it is: get the file using ftp, edit it, upload it back using ftp.
Original is:
Change it to:
4. Reboot the device for those changes to take effect.
So, what's the result?
Works!
Is it any faster, I bet you'll ask? Well I can't tell... the book I'm reading definitely feels snappy flipping pages, but is it because of the book, because of the options, or just a placebo? I really don't have any serious tools to make a proper comparison.
Hopefully that helps!
So, what options does it run by default?
Code:
[root@(none) /]# mount
rootfs on / type rootfs (rw) /dev/root on / type ext4 (rw,noatime,nodiratime,barrier=1,data=ordered)So, I decided to try to change it and share how to.
What you'll need is:
- ftp and telnet/ssh access to the device. The guides on the internet aren't perfect, if you want I can make a better todo (where better means it was easier for me...).
- a cross-compiled tune2fs with dependencies. I'm attaching those files which I scavenged from pre-compiled rmps openmamba repository. You can cross-compile them yourself, find them pre-compiled yourself (7zip opens rpms), or just get them from the zip I'll attach.
Instructions:
1. FTP to your kobo and put the contents of my zip somewhere. Since those files won't be needed after you've finished all steps, I just dumped them to the root of kobo's filesystem.
2. telnet/ssh into your kobo (I used putty) and run the following commands:
Code:
chmod +x ./tune2fs # make the file executable
./tune2fs -o journal_data_writeback /dev/mmcblk0p1 # change the journaling mode to what that blog post suggestsOriginal is:
Code:
mount -o remount,noatime,nodiratime /dev/mmcblk0p1 /Code:
mount -o remount,noatime,nodiratime,barrier=0,nobh /dev/mmcblk0p1 /So, what's the result?
Code:
[root@(none) /]# mount
rootfs on / type rootfs (rw) /dev/root on / type ext4 (rw,noatime,nodiratime,barrier=0,nobh,data=writeback)Is it any faster, I bet you'll ask? Well I can't tell... the book I'm reading definitely feels snappy flipping pages, but is it because of the book, because of the options, or just a placebo? I really don't have any serious tools to make a proper comparison.
Hopefully that helps!