Recognize special name 'cancel' for device deletion, that will request
kernel to stop running device deletion. This needs support in kernel,
otherwise this will fail due to another exclusive operation running
(though could be the same one).
The command returns after kernel finishes any work that got interrupted,
but this should not take long in kernels 5.10+ that allow interruptible
relocation. The waiting inside kernel is interruptible so this command
(and the waiting stage) can be interrupted.
The device size is restored when deletion does not finish but it's
recommended to review the filesystem state.
Note: in kernels 5.10+ sending a fatal signal (TERM, KILL, Ctrl-C) to
the process running the device deletion will cancel it too.
Example:
$ btrfs device delete /dev/sdx /mnt
...
$ btrfs device delete cancel /mnt
Signed-off-by: David Sterba <dsterba@suse.com>
There's a group of functions that are related to opening filesystem in
various modes, this can be moved to a separate file.
Signed-off-by: David Sterba <dsterba@suse.com>
Check if the target file system is flagged as ZONED. If it is, the
device to be added is flagged PREP_DEVICE_ZONED. Also add checks to
prevent mixing non-zoned devices and zoned devices.
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
The libmount dependency has been added in commit 61ecaff036
("btrfs-progs: build: add libmount dependency"), and static build got
broken. There are functions that do basically the same thing and also
share the name, which in turn fails at link time.
ld: /../lib64/libmount.a(libcommon_la-canonicalize.o): in function `canonicalize_dm_name':
util-linux-2.34/lib/canonicalize.c:58: multiple definition of `canonicalize_dm_name';
common/path-utils.static.o:btrfs-progs/common/path-utils.c:286: first defined here
In case the collision can be resolved by renaming, it's done
(canonicalize_path and parse_size). There are 2 symbols from selinux
that are substituted by a weak aliases during the static build.
There's one new warning due to use of getgrnam_r in libmount that
depends on dynamic linking and may not work properly with static build.
We're not using the related functions directly or indirectly, so it
should be safe to ignore the warnings.
ld: ../lib64/libmount.a(la-utils.o): in function `mnt_get_gid':
util-linux-2.34/libmount/src/utils.c:625: warning: Using 'getgrnam_r' in statically linked applications
+requires at runtime the shared libraries from the glibc version used for linking
Issue: #333
Signed-off-by: David Sterba <dsterba@suse.com>
Add support for json formatting. Switch hard coded printing code to
formatted print with output formatter. Json output would be useful for
other programs that parse output of the command.
The plain text format is not changed for backward compatibility but this
requires to do another switch by the output type.
Example text format:
device: /dev/vdb
devid 1
write_io_errs: 0
read_io_errs: 0
flush_io_errs: 0
corruption_errs: 0
generation_errs: 0
Example json format:
{
"__header": {
"version": "1"
},
"device-stats": [
{
"device": "/dev/vdb",
"devid": "1",
"write_io_errs": "0",
"read_io_errs": "0",
"flush_io_errs": "0",
"corruption_errs": "0",
"generation_errs": "0"
}
]
}
Issue: #291
Signed-off-by: Sidong Yang <realwakka@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
The exclusive ops will not start if there's one already running. Now
that we have the sysfs export (since kernel 5.10) to check if there's
one already running, use it to allow enqueueing of the operations as a
convenience.
Supported enqueuing:
btrfs balance start --enqueue
btrfs filesystem resize --enqueue
btrfs device add --enqueue
btrfs device delete --enqueue
btrfs replace start --enqueue
This patch implements the functionality based on Goldwyn's patch
https://lore.kernel.org/linux-btrfs/?q=20200825150338.32610-4-rgoldwyn%40suse.de
but on top of previous preparatory patches.
Note that 'filesystem resize' options could confuse getopt as the
negative size change looks like a series of short options and there's no
way to make getopt ignore the short options, so there's a custom option
parser.
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.de>
Signed-off-by: David Sterba <dsterba@suse.com>
If the exclusive operation is available in sysfs file, check if there's
one already running. The check is done for:
- device add, remove, replace
- balance
- filesystem resize
All commands will validate arguments and check before the ioctl or
before any potentially irreversible operations (like clearing device
before replacing).
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Enable the quiet option to the device scan command. Does the job
quietly. For example:
$ btrfs -q device scan
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Function btrfs_scan_devices() is being used by commands such as
'btrfs filesystem' and 'btrfs device', by having the verbose argument in
the btrfs_scan_devices() we can control which threads to print the
messages when verbose is enabled by the global option.
Add an option %verbose to btrfs_scan_devices().
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
The term 'mixed' is confusing as it's commonly used for mised block
group profiles created by 'mkfs.btrfs --mixed'. We're interested in
multiple profiles for each type, so use the term 'multiple'.
Signed-off-by: David Sterba <dsterba@suse.com>
Add the warning to 'device usage' and 'filesystem df'.
Signed-off-by: Goffredo Baroncelli <kreijack@inwid.it>
Signed-off-by: David Sterba <dsterba@suse.com>
Add a check in some btrfs subcommands to detect if a filesystem
has mixed profiles for data/metadata/system. In this case
a warning is showed.
Signed-off-by: Goffredo Baroncelli <kreijack@inwind.it>
Signed-off-by: David Sterba <dsterba@suse.com>
For options that do not have the long description, the empty string is
required to mark where the options start. Some commands were missing
that.
Signed-off-by: David Sterba <dsterba@suse.com>
David Sterba
Naohiro Aota
Sidong Yang
Goldwyn Rodrigues
Anand Jain
Goffredo Baroncelli