The last argument should be the directory you want to clone into. Use
'-b <branch>' to specify the branch you want to clone. I'm pretty sure
you've compiled just the master branch of both linux-btrfs and
btrfs-progs.
On Mon, Feb 4, 2013 at 8:59 PM, Gareth Pye <gar...@cerberos.id.au> wrote:
> I felt like having a small play with this stuff, as I've been wanting
> it for so long :)
>
> But apparently I've made some incredibly newb error.
>
> I used the following two lines to check out the code:
> git clone git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs.git
> raid56-experimental
> git clone git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-progs.git
> raid56-experimental-progs
>
> Then I did not very much to compile both of them (installed lots and
> lots of packages that various places told me would be needed so they'd
> both compile) finishing up with a "sudo make install" for both the
> kernel and the tools.
> Rebooting miracuously it came up with the new kernel and uname -a
> assures me that I have a new kernel running:
> btrfs@ubuntu:/kernel/raid56-experimental$ uname -a
> Linux ubuntu 3.6.0+ #1 SMP Tue Feb 5 12:26:03 EST 2013 x86_64 x86_64
> x86_64 GNU/Linux
> but 3.6.0 sounds rather low, but it is newer than Ubuntu 12.10's 3.5
> so I believe I am running the kernel I just compiled
>
> Where things fail is that I can figure out how to make a raid5 btrfs,
> I'm certain I'm using the mkfs.btrfs that I just compiled (by
> explicitly calling it in the make folder) but it wont recognise what I
> assume the parameter to be:
> btrfs@ubuntu:/kernel/raid56-experimental-progs$ ./mkfs.btrfs -m raid5
> -d raid5 /dev/sd[bcdef]
> Unknown profile raid5
>
> Which flavour of newb am I today?
>
> PS: I use newb in a very friendly way, I feel no shame over that term :)
>
> On Tue, Feb 5, 2013 at 1:26 PM, H. Peter Anvin <h...@zytor.com> wrote:
>> Also, a 2-member raid5 or 3-member raid6 are a raid1 and can be treated as
>> such.
>>
>> Chris Mason <chris.ma...@fusionio.com> wrote:
>>
>>>On Mon, Feb 04, 2013 at 02:42:24PM -0700, H. Peter Anvin wrote:
>>>> @@ -1389,6 +1392,14 @@ int btrfs_rm_device(struct btrfs_root *root,
>>>char
>>>> *device_path)
>>>> }
>>>> btrfs_dev_replace_unlock(&root->fs_info->dev_replace);
>>>>
>>>> + if ((all_avail & (BTRFS_BLOCK_GROUP_RAID5 |
>>>> + BTRFS_BLOCK_GROUP_RAID6) && num_devices <= 3)) {
>>>> + printk(KERN_ERR "btrfs: unable to go below three devices "
>>>> + "on raid5 or raid6\n");
>>>> + ret = -EINVAL;
>>>> + goto out;
>>>> + }
>>>> +
>>>> if ((all_avail & BTRFS_BLOCK_GROUP_RAID10) && num_devices <= 4) {
>>>> printk(KERN_ERR "btrfs: unable to go below four devices "
>>>> "on raid10\n");
>>>> @@ -1403,6 +1414,21 @@ int btrfs_rm_device(struct btrfs_root *root,
>>>char
>>>> *device_path)
>>>> goto out;
>>>> }
>>>>
>>>> + if ((all_avail & BTRFS_BLOCK_GROUP_RAID5) &&
>>>> + root->fs_info->fs_devices->rw_devices <= 2) {
>>>> + printk(KERN_ERR "btrfs: unable to go below two "
>>>> + "devices on raid5\n");
>>>> + ret = -EINVAL;
>>>> + goto out;
>>>> + }
>>>> + if ((all_avail & BTRFS_BLOCK_GROUP_RAID6) &&
>>>> + root->fs_info->fs_devices->rw_devices <= 3) {
>>>> + printk(KERN_ERR "btrfs: unable to go below three "
>>>> + "devices on raid6\n");
>>>> + ret = -EINVAL;
>>>> + goto out;
>>>> + }
>>>> +
>>>> if (strcmp(device_path, "missing") == 0) {
>>>> struct list_head *devices;
>>>> struct btrfs_device *tmp;
>>>>
>>>>
>>>> This seems inconsistent?
>>>
>>>Whoops, missed that one. Thanks!
>>>
>>>-chris
>>
>> --
>> Sent from my mobile phone. Please excuse brevity and lack of formatting.
>> --
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>
>
>
> --
> Gareth Pye
> Level 2 Judge, Melbourne, Australia
> Australian MTG Forum: mtgau.com
> gar...@cerberos.id.au - www.rockpaperdynamite.wordpress.com
> "Dear God, I would like to file a bug report"
> --
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