On Sat, Feb 02, 2013 at 11:06:23PM +0530, Atri Sharma wrote: > Hi Hugo, > > Thanks for the earlier help. > > I needed some more help please. > > I created a BTRFS partition on /dev/sda3. To verify, the output of df > -T command: > > e > /dev/sda1 fuseblk 102396 25180 77216 > 25% /run/media/atri/System Reserved > /dev/sda3 btrfs 331637760 120 317977536 > 1% /run/media/atri/02fad498-f636-410e-a4bf-4d91428b9106 > > > After this, I am trying to create a folder on the partition. How do I do that?
Well, a folder (aka a directory) is created with mkdir. But... > I tried : > > [atri@AtriServer ~]$ sudo btrfs subvolume create /dev/sda3/ > Create subvolume '/dev/sda3' > ERROR: cannot create subvolume - Inappropriate ioctl for device ... you're trying to create a subvolume here, so I'll assume that's what you want. If you take a look at the output of "btrfs --help", you'll see that most of the commands take a path, not a device. This is usually the location of some file or directory, and in most cases should be a mount point of (some subvolume within) the filesystem. In this case, what you want to do is create the subvolume with, for example: sudo btrfs subvolume create /run/media/atri/02fad498-f636-410e-a4bf-4d91428b9106/subvolumename because the filesystem is mounted at /run/media/atri/02fad498-f636-410e-a4bf-4d91428b9106/, so you need to specify a path below that to create any subvolumes in it. (I'd recommend mounting your filesystem somewhere with a slightly shorter name). Once you've created the subvolume, it'll look like a directory, but it can also be mounted independently of the rest of the filesystem. Hugo. > Please help. > > Atri > > On Sat, Feb 2, 2013 at 9:56 PM, Atri Sharma <atri.j...@gmail.com> wrote: > > Hi Hugo, > > > > Thanks. > > I was having some issues with my priviledges, and sorting them out has > > worked. > > > > Thanks a ton, > > > > Atri > > > > On Sat, Feb 2, 2013 at 9:50 PM, Hugo Mills <h...@carfax.org.uk> wrote: > >> On Sat, Feb 02, 2013 at 08:56:20PM +0530, Atri Sharma wrote: > >>> Hi all, > >>> > >>> I am running a Fedora 17 system. I am trying to set up a new partition > >>> of 2 GB size which has BTRFS as file system. > >>> > >>> When I am trying to do mkfs.btrfs on a partition, I get: > >>> > >>> [atri@AtriServer ~]$ mkfs.btrfs /dev/sda3 > >>> > >>> WARNING! - Btrfs Btrfs v0.19 IS EXPERIMENTAL > >>> WARNING! - see http://btrfs.wiki.kernel.org before using > >>> > >>> check_mounted(): Could not open /dev/sda3 > >>> error checking /dev/sda3 mount status > >> > >> You need to be root, or (typically) to be in the "disk" group in > >> order to write to a block device. > >> > >> Hugo. > >> > >> -- > >> === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk === > >> PGP key: 515C238D from wwwkeys.eu.pgp.net or http://www.carfax.org.uk > >> --- "What's so bad about being drunk?" "You ask a glass of water" --- > >> > > > > > > > > -- > > Regards, > > > > Atri > > l'apprenant > > > > -- > Regards, > > Atri > l'apprenant > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk === PGP key: 515C238D from wwwkeys.eu.pgp.net or http://www.carfax.org.uk --- We don't just borrow words; on occasion, English has pursued --- other languages down alleyways to beat them unconscious and rifle their pockets for new vocabulary.
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