Filesystems – Unix-like Filesystem Mountable on Windows and Mac OS X

executablefilesystems

I've recently purchased a usb stick which I will be using to share data between me and my colleagues.

I'd like to format it as ext3, but I know this will cause trouble because for instance Mac OS X has troubles mounting that.

The problem is that any other FS I've used before (except for ext2 or ext4) seems to screw up the executable bit on files that have been on it.

E.g. I put up a normal non-executable pdf file on the stick, I take it off again and suddenly it's executable (e.i. the executable permission is enabled).

I don't like these kinds of trickeries. What filesystem should I use? Or is this problem not FS-related?

Best Answer

According to Universal Disk Format - Wikipedia, UDF may work: it has POSIX-style permissions, is readable by Linux, Mac OS X, and Windows XP and up, and is writable by Linux, Mac OS X, and Windows Vista and up.

Related Solutions

How to Allocate More Space to a Filesystem Mounted on /

At first you need to unmount the second device again, before you proceed with the following steps:

You will have to add the device /dev/vdb into your logical volume group VolGroup, you can do this using vgextend.

vgextend VolGroup /dev/vdb

After this you can first grow the logical volume lv_root to the size of the group, using lvextend.

lvextend /dev/mapper/VolGroup-lv_root -L+49G

Then you need to grow the file system on the logical volume with fsadm.

fsadm resize /dev/mapper/VolGroup-lv_root

Here are more details about resizing the file system: grow file system

Linux – filesystem that works under qemu and I can mount on the host

Instead of using an image file (or in addition to an image file) you can use a block device (LVM or loop device) and pass this to the VM (which sees it as disk drive). You can mount it from the guest and from the host. But you should make sure this is not done simultaneously.

The obvious disadvantage: This volume does not grow with the need. But you can extend the block device / loop device file later and adapt the filesystem to the new size.

libvirt configuration

This is not pure QEMU but if you use libvirt then you need entries like this:

<disk type='block' device='disk'>
  <driver name='qemu' type='raw'/>
  <source dev='/dev/mapper/storage-user'/>
  <target dev='vdb' bus='virtio'/>
  <serial>KVM-user</serial>
  <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
</disk>

Best Answer

Related Solutions

How to Allocate More Space to a Filesystem Mounted on /

Linux – filesystem that works under qemu and I can mount on the host

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