[uml-user] sharing filesystem between UML's (ocfs2?)
Hi, i moved my vservers to UML but in the process, i ran into a problem. I need to access the /home partition from several uml's. I first thought of using hostfs and leaving /home on the host machine. This for instance resulted in saving emails from a user with root rights. Anyway, to solve this, i thought of making file to share between the umls and putting all data from /home in there. I found out about ocfs2 and it seems this would allow just that. I've set up etc/ocfs2/cluster.conf/, with the host and 2 guests as node. The host too because i want /home to be in the file (home_fs) and not anywhere else. I'm however not sure this is the correct way to proceed and how and what components i need from ocfs2. I installed the tools and as i said, i made the cluster.conf file, copied it to the 2 uml's. The ocfs2 services are started but when i want to mount it (to first copy /home over), i get this error: # mount -t ocfs2 /storage1/vm/home_fs /mnt/debinst ocfs2_hb_ctl: The block size is smaller than the sector size on this device while reading uuid mount.ocfs2: Error when attempting to run /sbin/ocfs2_hb_ctl: "Operation not permitted" I formated the file like this: mkfs.ocfs2 -b 4k -C 32K -L "ocs" -N 4 home_fs I know that afterwards i need to specify it at start up with an added c: ... ubd2c=home_fs ... What am i missing ? Is there any specific documentation to getting this to work with UML or another way i can share parts between UML's? Regards, Benedict - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ ___ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
Re: [uml-user] network eth0/tap0 problem
> -Original Message- > If i try to bring up the eth0/tap0 device with ifup eth0 > i get the message: modprobe QM_MODULES: Function not implemented > What i need to do that the system is not trying to load the module ? Christian, Typically this message means your guest doesn't have the correct utilities to load modules. The solution will depend on your distribution. However, a quick search of the list archives show that this has been addressed before: http://www.mail-archive.com/user-mode-linux-user@lists.sourceforge.net/m sg03927.html Try installing the utilities and then see if you're still having problems. Also, if you are still having problems, we'll need a lot more information about how your trying to setup the tun device (transcripts of commands with output) before we can offer suggestions. Tony - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ ___ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
Re: [uml-user] sharing filesystem between UML's (ocfs2?)
On Fri, Aug 17, 2007 at 03:24:59PM +0200, Benedict Verheyen wrote: > I first thought of using hostfs and leaving /home on the host machine. > This for instance resulted in saving emails from a user with root rights. > Anyway, to solve this, i thought of making file to share between the > umls and putting all data from /home in there. hostfs should work in this case. If you have a UML running as user, importing the host's /home/user, the permissions should be OK. The one odd thing, which shouldn't hurt, is that if the user inside UML is root, and saves files, they will be owned by user, not root. > I found out about ocfs2 and it seems this would allow just that. > I've set up etc/ocfs2/cluster.conf/, with the host and 2 guests as node. > The host too because i want /home to be in the file (home_fs) and not > anywhere else. ocfs2 should work, but setting up a cluster is overkill for what you want. Jeff -- Work email - jdike at linux dot intel dot com - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ ___ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
Re: [uml-user] sharing filesystem between UML's (ocfs2?)
Jeff Dike schreef: Thanks for your answers Jeff. > hostfs should work in this case. If you have a UML running as user, > importing the host's /home/user, the permissions should be OK. OK, but if want to import all of /home and not just /home/usr. Is hostfs still usable in this case? Because then the other users homes would also have the permissions of the user running the UML? > The one odd thing, which shouldn't hurt, is that if the user inside > UML is root, and saves files, they will be owned by user, not root. Indeed, that wouldn't be bad. > ocfs2 should work, but setting up a cluster is overkill for what you > want. But it's probably the only way to share a device file between UML's or are there other technologies that do allow that and maybe at less overkill? Thans, Benedict - This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ ___ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
