Displaying 20 results from an estimated 10000 matches similar to: "R: default subvolume abilities/restrictions"
2012 Jun 20
8
[PATCH] Allow cross subvolume reflinks (2nd attempt)
Hello,
This is the second attempt to bring in cross subvolume reflinks into btrfs.
The first attempt was NAKed due to missing vfs mount checks and a clear
description of what btrfs subvolumes are and probably also why cross
subvolume reflinks are ok in the case of btrfs. This version of the patch
comes from David and is in SUSE kernels since a long time, so it is tested
and working. The patch
2011 Apr 06
3
[PATCH V2] Btrfs: fix subvolume mount by name problem when default mount subvolume is set
We create two subvolumes (meego_root and meego_home) in
btrfs root directory. And set meego_root as default mount
subvolume. After we remount btrfs, meego_root is mounted
to top directory by default. Then when we try to mount
meego_home (subvol=meego_home) to a subdirectory, it failed.
The problem is when default mount subvolume is set to
meego_root, we search meego_home in meego_root but can not
2013 Nov 16
16
[PATCH] BTRFS-PROG: recursively subvolume snapshot and delete
Hi All,
the following patches implement the recursively snapshotting and
deleting of a subvolume.
To snapshot recursively you must pass the -R switch:
# btrfs subvolume create sub1
Create subvolume ''./sub1''
# btrfs subvolume create sub1/sub2
Create subvolume ''sub1/sub2''
# btrfs subvolume snapshot -R sub1 sub1-snap
Create a snapshot of
2011 Oct 14
2
snapshot issues
Good afternoon btrfs,
I have been having issues with snapshots not reading the whole file tree
below them. I have installed new btrfs-progs from
git://git.darksatanic.net/repo/btrfs-progs-unstable.git
made and installed them. My tree is: /Btrfs |
|__ nfs1 |
|__ data |
2012 Mar 27
13
Create subvolume from a directory?
Hi all,
Just a quick question but can''t find an obvious answer.
Can I create/convert a existing (btrfs) directory into a subvolume?
It would be very helpful when transferring ''partitions'' into btrfs.
I found a similar question way back in google, but that site is
down now generally.
Thanks in advance.
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2010 Nov 22
9
btrfs problems and fedora 14
I thought I would try btrfs on a new installation of f14. yes, I know
its experimental but stable so it seemed to be a good time to try it.
I am not sure if I have missed something out of all my searching but am
I correct in thinking that currently:
I. it is not possible to boot from a snapshot of the operating
system and, in particular, the yum snapshots cannot be used for
2010 Oct 25
2
[PATCH] Btrfs: allow subvol deletion by unprivileged user with -o user_subvol_rm_allowed
Add a mount option user_subvol_rm_allowed that allows users to delete a
(potentially non-empty!) subvol when they would otherwise we allowed to do
an rmdir(2). We duplicate the may_delete() checks from the core VFS code
to implement identical security checks (minus the directory size check).
Signed-off-by: Sage Weil <sage@newdream.net>
---
fs/btrfs/ctree.h | 1 +
fs/btrfs/ioctl.c |
2010 Oct 24
4
Determine if a given fs is a btrfs fs
Hi,
I''ve some btrfs fs which are encrypted with loopaes.
I decrypt them in a script during bootup. Now I want to determine if the decrypted fs
is a btrfs fs. If not I missspelled the password and I can handle that error in my
script.
Thanks for any help!
Felix
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2012 Jul 05
7
[RFC] Btrfs "sendshots" and hidden snapshots
Hello all,
in IRC we had a discussion on how we could solve sending live
subvolumes and how to send subvolumes without the need to
administrate/keep old snapshots for incremental sends. One of the
ideas was to introduce "sendshots", which are basically snapshots
where no refs are counted for file data. This means, that when file
data is changed in the sendshot origin, we do not consume
2012 Jun 29
12
[PATCH 1/3] Btrfs-progs: add support to set subvolume/snapshot readonly
Setting subvolume/snapshot readonly has been missing for a long time.
With this patch, we can set a subvolume/snapshot readonly via:
o btrfs subvolume set-ro <path>
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
---
cmds-subvolume.c | 40 ++++++++++++++++++++++++++++++++++++++++
ioctl.h | 7 +++++++
2 files changed, 47 insertions(+), 0 deletions(-)
diff --git
2012 Dec 27
4
problems with dracut mounting subvols
I've just tried putting usr in a subvol. Installation proceeds normally, no errors, but I'm dropped to a dracut prompt which indicates mount of /usr failed. dmesg follows:
[ 14.025215] systemd[1]: Starting dracut initqueue hook...
[ 14.077890] Btrfs loaded
[ 14.129987] device label fedora_f18v devid 1 transid 31 /dev/sda1
[ 14.313607] device label fedora_f18v devid 1 transid 31
2012 Aug 19
5
How to get Btrfs on 2nd partition of USB HDD to automount as read/write
Hello,
The question below is based on
https://lists.ubuntu.com/archives/xubuntu-users/2012-
August/004509.html
Thanks in advance for any help with the following question,
including pointing me to some other info resource if needed.
I have a user with an Xubuntu 12.04.1 laptop, 32-bit. He needs to
use a USB hard disk drive which has 2 partitions: the 1st
partition is NTFS and the 2nd
2013 May 07
2
[PATCH] Btrfs: fix passing wrong arg gfp_t to decide the correct allocation mode
If you look the code carefully, you will see all the tree_mod_alloc()
has to use GFP_ATOMIC. However, the original code pass the wrong arg
gfp_t in some places, this dosen''t cause any problems, because in the
tree_mod_alloc(), it ignores arg gfp_t and just use GFP_ATOMIC directly,
this is not good.
However, i think we should try best not to allocate with GFP_ATOMIC, so
i keep the gfp_t
2013 Jan 05
14
/boot as a btrfs subvolume
As of the latest updates to anaconda and grub2 for Fedora 18, it is now
possible to install with /boot as a btrfs subvolume. The way that grub2
is handling this is the "reach down" to the files it needs as if the
subvolume was a directory.
Is this OK?
At this point I am not worried about snapshots or any other
complexities. If the subvolume name is known. should grub2 be able to
2009 Aug 25
7
snapshot/subvol deletion
Hi,
I will send a series patches that add snapshot/subvol deletion soon.
But the way to delete snapshot/subvol is far from people''s expectancy.
To delete a snapshot/subvol, we need four steps: 1) snapshot/subvol
deletion ioctl or rmdir; 2) umount; 3) btrfsck; 4) mount the fs.
The reason for this is bug in root back & forward references. In simple
terms, the bug prevents us from
2012 Nov 01
41
[Request for review] [RFC] Add label support for snapshots and subvols
From: Anand Jain <anand.jain@oracle.com>
(This patch is for the review/test not yet for the integration).
Here is an implementation of the feature to add label to the
subvolume and snapshots. Which would help sysadmin to better manager
the subvol and snapshots.
This can be done in two ways, one - using attr which is user land
only changes but drawback is able to change the label
2013 Dec 17
9
[PATCH] Btrfs-progs: receive: fix the case that we can not find subvolume
If we change our default subvolume, btrfs receive will fail to find
subvolume. To fix this problem, i have two ideas.
1.make btrfs snapshot ioctl support passing source subvolume''s objectid
2.when we want to using interval subvolume path, we mount it other place
that use subvolume 5 as its default subvolume.
We''d better use the second approach because it won''t bother
2012 Aug 01
17
[PATCH] add crtime to the snapshot list
From: Anand <anand.jain@oracle.com>
This patch adds creation-time to the snapshot list display,
which would help user to better manage the snapshots when
number of snapshots grow substantially. This patch is developed
and on top of the send/receive btrfs and btrfs-progs repo at
git://github.com/ablock84/linux-btrfs.git (send-v2)
git://github.com/ablock84/btrfs-progs.git (send-v2)
2011 Oct 16
2
unresolved ref root error
Hello,
On a newly created filesystem with btrfs-progs-git-20111009 and the 3.1.0-rc8
kernel I am getting the following error when doing btrfsck after main OS
installation
fs tree 256 refs 2
unresolved ref root 256 dir 256 index 2 namelen 8 name __active error 600
found 4215058432 bytes used err is 1
total csum bytes: 3962760
total tree bytes: 157192192
total fs tree bytes: 146976768
2012 Dec 12
2
subvolume show
I was looking through some of the archives and notice a patch submitted
to implement:
btrfs subvolume show <path-to-subvolume>
command.
I also noticed that is does not appear to be in the git.
This looks like a useful capability. I was trying to find out what the
UUID was for a newly created subvolume and have not found out how to do
that.
Gene
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