Re: OK, I give..Help?
"Chris Furlough": > > Then you did it. And you see everything under /root/jukebox_cddb/aufs, > > except /proc, /sys, /dev/pts and /dev/shm, don't you? > > Is it enough for you? > > Either I don't understand aufs, or it's not working. After the above mount, > I went to /root, and created a file, and threw some text into it. Now, in > theory, if I understand correctly, this file should ONLY exist virtually, as > in only in the AUFS. So, I reboot, and when it comes up, the file is there, > and I can cat it normally. Is the / dir NOT read-only? Is this file > existing in AUFS across boots? You went to /root, it is out of aufs. Your aufs is /root/jukebox_cddb/aufs, isn't it? Your newly created file is saved in /root. I am afraid you don't understand aufs or mount. Probably, you need to try LiveCD, for example SLAX. Basically, it doesn't save the created files in your hard drive. Also, I recommend you to read the manual of chroot(8). Junjiro Okajima - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
Re: OK, I give..Help?
> "Chris Furlough": >> What I'd like to be able to do, is to mount something over the whole "/" >> mount point. > > Then you did it. And you see everything under /root/jukebox_cddb/aufs, > except /proc, /sys, /dev/pts and /dev/shm, don't you? > Is it enough for you? Either I don't understand aufs, or it's not working. After the above mount, I went to /root, and created a file, and threw some text into it. Now, in theory, if I understand correctly, this file should ONLY exist virtually, as in only in the AUFS. So, I reboot, and when it comes up, the file is there, and I can cat it normally. Is the / dir NOT read-only? Is this file existing in AUFS across boots? Chris - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
Re: OK, I give..Help?
"Chris Furlough": > What I'd like to be able to do, is to mount something over the whole "/" > mount point. Then you did it. And you see everything under /root/jukebox_cddb/aufs, except /proc, /sys, /dev/pts and /dev/shm, don't you? Is it enough for you? Junjiro Okajima - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
Re: OK, I give..Help?
> Will you show me your /proc/mounts? rootfs / rootfs rw 0 0 udev /dev tmpfs rw 0 0 /dev/hda2 / reiserfs rw 0 0 proc /proc proc rw 0 0 sysfs /sys sysfs rw 0 0 debugfs /sys/kernel/debug debugfs rw 0 0 devpts /dev/pts devpts rw 0 0 tmpfs /dev/shm tmpfs rw 0 0 /dev/hda3 /root/jukebox_cddb reiserfs rw 0 0 none /root/jukebox_cddb/aufs aufs rw,xino=/root/jukebox_cddb/rw/.aufs.xino,br:/root/jukebox_cddb/rw=rw:/=ro 0 0 What I'd like to be able to do, is to mount something over the whole "/" mount point. - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
Re: OK, I give..Help?
> Are you sure that you chdir-ed to different filesystem, i.e. different > disk > partition? I tried that, and it didn't complain, and looks like it worked. (no errors at least). - Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
Re: OK, I give..Help?
"Chris Furlough": > > $ cd /differnt/filesystem > > $ mkdir rw aufs > > $ sudo mount -t aufs -o br:./rw:/ none ./aufs ::: > aufs test_add:364:mount[3452]: / is overlapped Are you sure that you chdir-ed to different filesystem, i.e. different disk partition? Will you show me your /proc/mounts? Junjiro Okajima - Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
Re: OK, I give..Help?
> What will happen if you try this command? > > $ cd /differnt/filesystem > $ mkdir rw aufs > $ sudo mount -t aufs -o br:./rw:/ none ./aufs mount: wrong fs type, bad option, bad superblock on none (...) dmesg | tail reveals: aufs test_add:364:mount[3452]: / is overlapped - Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
Re: OK, I give..Help?
"Chris Furlough": > Let me explain it again, I want to mount the root "/" as read-only, and = > have aufs mounted over the top to catch all the writes that the OS, or = > applications do. Can someone shoot me a command line, and an fstab = > entry that would handle this? It highly depends upon your filesystems or partitions, since,,, - aufs doesn't follow down different filesystem under a branch. When you have two disk partitions, / and /usr, and you specify / as a branch of aufs, you don't see /usr from aufs. - aufs doesn't allow a branch overlapping. It means all the branches cannot be a child of another branch on the same disk partition. What will happen if you try this command? $ cd /differnt/filesystem $ mkdir rw aufs $ sudo mount -t aufs -o br:./rw:/ none ./aufs Junjiro Okajima - Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
OK, I give..Help?
- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
