Old kernels before 3.9 do not provide ioctl BTRFS_IOC_GET_FSLABEL.
So we need to provide a fail safe logic for btrfs-progs running
on those kernel.
In this patch when get_label_mounted() fails on the old kernel
it will fail back to the old method and uses get_label_unmounted(),
where it will read from the disk directly.
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Sparse reports:
warning: non-ANSI function declaration of function
and we're using func(void) elsewhere.
Signed-off-by: David Sterba <dsterba@suse.com>
Failure during superblock wiping is not always a hard error as we're
going to overwrite it anyway but it may catch some errors earlier. The
error message is not very descriptive though, because we don't get back
much information from blkid.
Signed-off-by: David Sterba <dsterba@suse.com>
We are using separate code for parsing unit mode in current code,
better to use common function.
This patch introduces a common function to specify units as arguments
and a common help message, to make every tool in btrfs having same unit
argument.
The benefits are:
1: Unify current tool's arguments for unit
2: Make tools in future easy to implement such argument
3: Changes (enhancement) in common function have effect on all
relative tools
Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
In btrfs_add_to_fsid(), strdup() allocates memory to device->name, but
the return value is not checked.
So add the return value check and error handling code.
And clean-up error handling code for ENOMEM case.
Signed-off-by: Byongho Lee <bhlee.kernel@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This patch introduce open_btrfs_dir() to open a dir in btrfs
filesystem.
It can be used for several tools in btrfs-progs.
Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
[renamed from open_btrfs_dir, adjusted error messages]
Signed-off-by: David Sterba <dsterba@suse.com>
At some places we do not clear the whole ioctl structure and could
pass garbage to kernel. Zero the ioctl vol_args and use a helper for
copying the path.
Signed-off-by: David Sterba <dsterba@suse.cz>
The path bufferes should be PATH_MAX but BTRFS_PATH_NAME_MAX is shorter
due to embedding in 4k aligned structures.
The only reason to use BTRFS_PATH_NAME_MAX is for the respective
structures btrfs_ioctl_vol_args::name.
Signed-off-by: David Sterba <dsterba@suse.cz>
Anand reports that the static buffers used for pertty size strings cause
a stack overflow on SPARC. Zach proposed to change the printf format to
wrap the number and the suffix into a macro. This would require to
change all callsites of pretty_size* and is not very convienient to
write.
This patch replaces the per-call-site static buffers with a limited
number for slots that would be used on each invokation of pretty_size
and wrap around. The number of array slots shall be 10 for now, in
current codebase there are no more than 2 calls to pretty_size in a
single argument list.
Reported-by: Anand Jain <Anand.Jain@oracle.com>
CC: Zach Brown <zab@zabbo.net>
Signed-off-by: David Sterba <dsterba@suse.cz>
The error string buffer passed as an argument is of a fixed size, though
we could print up to PATH_MAX + something bytes. Print the error message
directly.
Signed-off-by: David Sterba <dsterba@suse.cz>
The error string buffer passed as an argument is of a fixed size, though
we could print up to PATH_MAX + something bytes. Print the error message
directly.
Signed-off-by: David Sterba <dsterba@suse.cz>
We should zero the dirstream in case we close it ourselves, so the
caller does not do it again. Most current callers do not do that and
exit immediatelly.
Signed-off-by: David Sterba <dsterba@suse.cz>
The variable argv0_buf was duplicated and the changes done in utils.c
were not propagated to help.c. So if an unknown commandline token was
found, the error message did not contain the known part:
$ btrfs scrub test
: unknown token 'test'
instead of
$ btrfs scrub test
btrfs scrub: uknown token 'test'
Signed-off-by: David Sterba <dsterba@suse.cz>
The function make_btrfs() has as argument the fsid of the filesystem.
If this fsid is empty or null make_btrfs() generates a new fsid. However
If the buffer is valid (but the string is empty) the generated fsid is
copied back to the caller.
Signed-off-by: Goffredo Baroncelli <kreijack@inwind.it>
Reviewed-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
When creating a new btrfs_device, copy the path to track it. This path
is then used by mkfs.btrfs to list all devices.
Signed-off-by: Goffredo Baroncelli <kreijack@inwind.it>
Reviewed-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Currently BTRFS allows you to make bad choices of data and
metadata levels. For example -d raid1 -m raid0 means you can
only use half your total disk space, but will lose everything
if 1 disk fails. It should give a warning in these cases.
When making a filesystem, check that metadata mode is at least
as redundant as the data mode. For example give warning when:
-d raid1 -m raid0
Signed-off-by: Sam Tygier <samtygier@yahoo.co.uk>
[make the check more visible in mkfs output]
Signed-off-by: David Sterba <dsterba@suse.cz>
After Patch:
remove BTRFS_SCAN_PROC scan method
There isn't any consumer for btrfs_scan_block_devices() so delete it.
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
mkfs and convert will not support the same features, -O will print only
the list according to the given mask.
Signed-off-by: David Sterba <dsterba@suse.cz>
Now parse_qgroupid() can resolve subvolume path into qgroupid.
This is quite handy for handling level 0 qgroupid, and user don't need
to resolve rootid by hand now.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
[constify string in __is_subvol]
Signed-off-by: David Sterba <dsterba@suse.cz>
check_node_or_leaf_size in utils.c now prints 'nodesize (or leafsize)'
instead of 'leafsize (or nodesize)' in the error messages, in order to
be less confusing for the user, as leafsize in mkfs is deprecated.
'ERROR: ' is also prepended to be consistent with other error messages.
Signed-off-by: Sebastian Thorarensen <sebth@naju.se>
Signed-off-by: David Sterba <dsterba@suse.cz>
Move the constant DEFAULT_MKFS_LEAF_SIZE to utils.h and rename it to
BTRFS_MKFS_DEFAULT_NODE_SIZE for consistency. Move the function
check_leaf_or_node_size to utils.c and rename it to
btrfs_check_node_or_leaf_size.
Signed-off-by: Sebastian Thorarensen <sebth@naju.se>
[added btrfs_ prefix]
Signed-off-by: David Sterba <dsterba@suse.cz>
glibc 2.10+ (5+ years old) enables all the desired features:
_XOPEN_SOURCE 700, __XOPEN2K8, POSIX_C_SOURCE, DEFAULT_SOURCE; with a
single _GNU_SOURCE define in the makefile alone. For portability to
other libc implementations (e.g. dietlibc) _XOPEN_SOURCE=700 is also
defined.
This also resolves Debian bug report filed by Michael Tautschnig -
"Inconsistent use of _XOPEN_SOURCE results in conflicting
declarations". Whilst I was not able to reproduce the results, the
reported fact is that _XOPEN_SOURCE set to 500 in one set of files
(e.g. cmds-filesystem.c) generates/defines different struct stat from
other files (cmds-replace.c).
This patch thus cleans up all feature defines, and sets them at a
consistent level.
Bug-Debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=747969
Signed-off-by: Dimitri John Ledkov <dimitri.j.ledkov@intel.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
The newly introduced search_chunk_tree_for_fs_info() won't count devid 0
in fi_arg->num_devices, which will cause buffer overflow since later
get_device_info() will fill di_args with devid.
This can be trigger by fstests/btrfs/069 and any operations needs to
iterate over all the devices like 'fi show' or 'dev stat' while
replacing.
The fix is do an extra probe specifically for devid 0 after
search_chunk_tree_for_fs_info() and change num_devices if needed.
Reported-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
The commit 1bad43fbe0 ("btrfs-progs: refine btrfs-debug-tree error
prompt when a mount point given")
add judgement on btrfs-debug-tree to restrict only block device to be
executed on, but the command can also be used on regular file, so add
regular file support for the judgement.
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
The check_arg_type() function does quite generic thing, move it to
utils.c.
Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com>
Reviewed-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
The @fi_args->num_devices in @get_fs_info() does not include seed devices.
We could just correct it by searching the chunk tree and count how
many dev_items there are in total which includes seed devices.
Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
The following BUG_ON:
BUG_ON(ndevs >= fi_args->num_devices)
is not needed, because it always fails with seed devices present.
Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Current error messages are like following:
Error: unable to create FS with metadata profile 32 (have 2 devices)
Error: unable to create FS with metadata profile 256 (have 2 devices)
Obviously it is hard for users to interpret "profile XX" to proper
meaning, such as "raidN". So use recongizable string instead of
internal numerical value. In case of "DUP", use an explicit message.
Plus this patch fix a bug that message mistake metadata profile
for data profile.
After applying this patch, messages will be like:
Error: DUP is not allowed when FS have multiple devices
Error: unable to create FS with metadata profile RAID6 (have 2
devices but 3 devices are required)
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Enhance the command "btrfs filesystem df" to show space usage information
for a mount point(s). It shows also an estimation of the space available,
on the basis of the current one used.
Signed-off-by: Goffredo Baroncelli <kreijack@inwind.it>
[code moved under #if 0 instead of deletion]
Signed-off-by: David Sterba <dsterba@suse.cz>
Make run from a long base path will overflow the argv0 buffer during
tests. Otherwise, this would happen for all the standalone binaries that
use set_argv0.
Original report:
https://bbs.archlinux.org/viewtopic.php?id=189861
Reported-by: WorMzy Tykashi <wormzy.tykashi@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
btrfs_scan_lblikd() is called by most the device related command functions.
And btrfs_scan_lblkid() is most expensive function and it becomes more expensive
as number of devices in the system increase. Further some threads call this
function more than once for absolutely no extra benefit and the real waste of
resources. Below list of threads and number of times btrfs_scan_lblkid()
is called in that thread.
btrfs-find-root 1
btrfs rescue super-recover 2
btrfs-debug-tree 1
btrfs-image -r 2
btrfs check 2
btrfs restore 2
calc-size NC
btrfs-corrupt-block NC
btrfs-image NC
btrfs-map-logical 1
btrfs-select-super NC
btrfstune 2
btrfs-zero-log NC
tester NC
quick-test.c NC
btrfs-convert 0
mkfs #number of devices to be mkfs
btrfs label set unmounted 2
btrfs get label unmounted 2
This patch will:
move out calling register_one_device with in btrfs_scan_lblkid()
and so function setting the BTRFS_UPDATE_KERNEL to yes will
call btrfs_register_all_devices() separately.
introduce a global variable scan_done, which is set when scan is
done succssfully per thread. So that following calls to this function
will just return success.
Further if any function needs to force scan after scan_done is set,
then it can be done when there is such a requirement, but as of now there
isn't any such requirement.
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
This function is to register all devices found after scanning
the system. Before we had this functionality with in the
btrfs_scan_lblkid(), however scanning and registering are two
different distinct operation its better keep them separate.
Also we want to optimize btrfs_scan_lblkid and avoid multiple
system scans unless needed. As of now device scan uses this function.
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
There is a compatibility issue with older kernel with the progs commit id as below.
d0588bfa47
btrfs-progs: do a separate probe for _transient_ replacing device
So as of now writing to revert the above commit id.
The brewing sysfs interface would help to fix the impending issue, which is
seed device would fail show in 'btrfs fi show' output of a sprout device.
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Anand Jain