Add '-s <sb_bytenr>' option to show superblock at given bytenr.
This is very useful to debug non-standard btrfs, like debuging the
1st stage btrfs of btrfs-convert.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
[ minor updates in docs ]
Signed-off-by: David Sterba <dsterba@suse.com>
When creating small Btrfs filesystem instances (i.e. filesystem size <= 1GiB),
mkfs.btrfs fails if both sectorsize and nodesize are specified on the command
line and sectorsize != nodesize, since mixed block groups involves both data
and metadata blocks sharing the same block group. This is an incorrect behavior
when '-M' option isn't specified on the command line.
This commit makes optional the creation of mixed block groups i.e. Mixed block
groups are created only when -M option is specified on the command line.
Since we now allow small filesystem instances with sectorsize != nodesize to
be created, we can end up in the following situation,
[root@localhost ~]# mkfs.btrfs -f -n 65536 /dev/loop0
btrfs-progs v3.19-rc2-405-g976307c
See http://btrfs.wiki.kernel.org for more information.
Performing full device TRIM (512.00MiB) ...
Label: (null)
UUID: 49fab72e-0c8b-466b-a3ca-d1bfe56475f0
Node size: 65536
Sector size: 4096
Filesystem size: 512.00MiB
Block group profiles:
Data: single 8.00MiB
Metadata: DUP 40.00MiB
System: DUP 12.00MiB
SSD detected: no
Incompat features: extref, skinny-metadata
Number of devices: 1
Devices:
ID SIZE PATH
1 512.00MiB /dev/loop0
[root@localhost ~]# mount /dev/loop0 /mnt/
mount: mount /dev/loop0 on /mnt failed: No space left on device
The ENOSPC occurs during the creation of the UUID tree. This is because of
things like large metadata block size, DUP mode used for metadata and global
reservation consuming space. Also, large nodesize does not make sense on small
filesystems, hence this should not be an issue.
Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Previous patch detecs inconsistency and unconditionally triggers quota
rescan. This may not be always desired as it's a heavy metadata
operation. In case of batch assignments it's better to trigger the
rescan at the end.
Signed-off-by: David Sterba <dsterba@suse.com>
Previously in 'filesystem resize get_min_size', now
'inspect-internal min-dev-size'. We'd like to avoid cluttering the
'resize' syntax further.
The test has been updated to exercise the new option.
Signed-off-by: David Sterba <dsterba@suse.com>
Currently there is not way for a user to know what is the minimum size a
device of a btrfs filesystem can be resized to. Sometimes the value of
total allocated space (sum of all allocated chunks/device extents), which
can be parsed from 'btrfs filesystem show' and 'btrfs filesystem usage',
works as the minimum size, but sometimes it does not, namely when device
extents have to relocated to holes (unallocated space) within the new
size of the device (the total allocated space sum).
This change adds the ability to reliably compute such minimum value and
extents 'btrfs filesystem resize' with the following syntax to get such
value:
btrfs filesystem resize [devid:]get_min_size
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Man manual need to be updated since RAID5/6 has been supported
by btrfs-replace.
Signed-off-by: Wang Yanfeng <wangyf-fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
There's an awkward asymmetry between btrfs device add and btrfs device
delete. Resolve this by aliasing delete to remove.
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
So far the subvol sync command takes a shortcut and looks if there are
any deleted subvols at all. It does not print the deleted subvolumes as
they get cleaned. Arguably this is what the user would like to see and
has to do
$ btrfs subvol sync /path $(btrfs subvol list -d /path | "extract the ids")
to see the progress.
Make it look for all currently deleted subvolumes automatically and
print the progress as if the ids were listed manually.
This is a slight change in the semantics of the command. Previously, any
new subvol deletion would prevent subvol sync to return. To simulate the
old behaviour, run 'subvol sync' in a loop until it returns 0.
Signed-off-by: David Sterba <dsterba@suse.cz>
Add option to silecne mkfs and print only errors, warnings or info on
user request like features or help.
Based on patch from Goffredo Baroncelli <kreijack@inwind.it>
Signed-off-by: David Sterba <dsterba@suse.cz>
In a chroot environment we may not have /proc mounted, which makes btrfs receive
freak out since it wants to know the base directory where are are mounted for
things like clone and such. Give an option to specify where the mountpoint is
in these cases so you can still do a btrfs receive in a chroot. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
[added manpage documentation]
Signed-off-by: David Sterba <dsterba@suse.cz>
This patch forces btrfs receive to issue chroot before
parsing the btrfs stream using command-line flag -C
to confine the process and minimize damage that could
be done via malicious btrfs stream.
Signed-off-by: Lauri Võsandi <lauri.vosandi@gmail.com>
[added long option variant, added docs]
Signed-off-by: David Sterba <dsterba@suse.cz>
Copy the functionality of standalone btrfs-zero-log to the main tool.
Delete man page for btrfs-zero-log and copy the relevant parts into
btrfs-rescue(8). The standalone utility will be removed later.
Signed-off-by: David Sterba <dsterba@suse.cz>
Resize of a filesystem image does not work as expected. This has been
confusing and can have bad consequences as people have reported,
resizing the wrong filesystem.
Signed-off-by: David Sterba <dsterba@suse.cz>
A few minor benefits:
* editors set highliting according to the extensions
* web access to the git repository (github) renders the .asciidoc
files:
* we can link to them from the wiki
* the files are editable via browser and such editations can be
submitted for merge easily
Signed-off-by: David Sterba <dsterba@suse.cz>
Although btrfs-convert can rollback converted btrfs, it still has some
limitation to ensure rollback.
Add a warning on the limitations.
Also add a note for users who decides to go on with btrfs and don't need
the rollback ability.
Reported-by: Vytautas D <vytdau@gmail.com>
Reported-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
We provided format <path>|<device> in command line.
But btrfs device stats doesn't work if device is not mounted.
Also fix some tailing whitespace.
Signed-off-by: Chen Hanxiao <chenhanxiao@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Allow btrfs-convert to use nodesizes other than 4096. It defaults to
max(16384, pagesize), like mkfs.
Signed-off-by: Sebastian Thorarensen <sebth@naju.se>
Signed-off-by: David Sterba <dsterba@suse.cz>
With progress turned on by default we should be able to disable it
as well.
Reported-by: Jérôme Poulin <jeromepoulin@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Agreed by several people, showing progress by default makes sense as
conversion is a one-time and long running action.
Signed-off-by: David Sterba <dsterba@suse.cz>
Add option '-a' for btrfs-find-root to iterate all the metadata extents
even the root is already found.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
