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Old 11-06-2005, 11:53 AM   #1
Ahmed
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FreeBSD /home mount point question


Ok I'm currently in the process of downloading FreeBSD 6. Now I had a question about mount points:

Here's my partition setup: http://i2.photobucket.com/albums/y13...heFall/hda.png

/hda1 is my Fedora Partition
The little free space after it is going to be the FreeBSD swap slice
Extended partition:
/hda5 is my home partition. I use it as a universal home folder for each distro I install.
/hda6 and /hda7 are Partitions with Data on them, I'll figure out a way to expand my home folder to take up all that space and contain that data on it.
/hda8 is has Debian on it, actually I never use it at the moment so it'll probably have to go.
/hda9 is the swap partition I use for any Linux distro I install on the system.
And finally the last partition ist where FreeBSD is going.

My question is: Can I set the /home mount point to /hda5 during installation, though it's on an Extended partition? Somewhere I read (or I think I read) that you can only allocate mount points on the whole extended partition. I just want to mount my BSD home folder on hda5. What can I do for that? Or is it impossible because /hda5 is ext3? Please help me out.

Will this whole thing go easily or am I better off backing up my stuff, wiping my hard drive and setting up the partitions from scratch?

Thanks a lot!

-A
 
Old 11-06-2005, 02:31 PM   #2
frob23
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While you can mount ext3, they mount as ext2 and you will have various problems (especially if you intend to write to it).

It is much better to have /home on a single partition and you can mount /home/linux-home/ or whatever... beneath it. I would probably mount it read only just to keep it from being corrupted. Although I tend to be more conservative about things like that than most people.
 
Old 11-07-2005, 08:40 AM   #3
Ahmed
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So is there any way how to be able to write to an ext3 partition without risking corrupting it (e.g. adding kernel support or something..)?

Thanks a lot!

-A
 
Old 11-07-2005, 01:28 PM   #4
frob23
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Actually, to my knowledge, writing to it at all isn't even possible. I think there was experimental write support for a while (or maybe I imagined it) but it never worked well. It is likely support will come in the future but it's not something I would wait on.

For the time being, plan on read only access to the data. If you need to have a partition to share data between systems make sure it's one that both can read and write (and not FAT -- windows -- based because you want to keep permissions and such).
 
Old 11-07-2005, 06:21 PM   #5
Bonzodog
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hi there- I have a similar question, so i thought I would add to this thread -
I currently have Ubuntu (root) installed on /dev/hda1 (primary)
/dev/hda2 is the extended partition containing:
Slamd64 (root) on /dev/hda5 (logical)
swap on /dev/hda6
/home (shared) on /dev/hda7

I was reading the handbook yesterday, and from what I can gather, FreeBSD's root has to be on a primary partition, (/dev/hda1) where as I was hoping to put it over slamd64 on /dev/hda5.
Also does FreeBSD have to use XFS? or can it use another filesystem, such as reiser or ext3?

If I am right, and what I am reading on here is right, then I will need to re-format the entire disk, create the partitions a bit more equally, then have 2 home partitions, one on reiserFS and the other on XFS, along with a new install of Ubuntu on /dev/hda5 and /dev/hda1 gets XFS with FreeBSD... or can it be done the other way around and can i make linux use XFS?
It would be nice to have the two OS's talking to each other with full read/write.

Thanks

A slightly confused linux-only-up-to-now user.
 
Old 11-07-2005, 08:58 PM   #6
frob23
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FreeBSD uses UFS not XFS. Yes, you will need to repartition... FreeBSD won't boot from an extended (logical) partition.

At the very least you need the / (root) partition to be ufs. All the others should be something which could reliably be mounted r/w and be checked at boot. Most usually this is also ufs (for many reasons... but mostly simplicity). Note: linux will read ufs filesystems without too many problems.

FreeBSD does not have reiserfs or ext3... I won't get into a filesystem flame-war here, but they see little need for these formats. With soft-updates the need for a journaling filesystem just does not exist.
http://www.mckusick.com/softdep/index.html

That link provides some other information. But in short, the lack of need/desire for these filesystems means there is not much call for full support in the base system. I would recommend using either ufs (preferred) or ext2 to share data between the two systems.
 
  


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