Enqueuing allows to let some operations to wait until the current one
finishes. This usually means that it's waiting for another one, but in
case of replace there's a check that does not allow the enqueuing to
take place, as reported.
Move it before that check.
Issue: #645
Signed-off-by: David Sterba <dsterba@suse.com>
We want to keep this file locally as we want to be uptodate with
upstream, so we can build btrfs-progs regardless of which kernel is
currently installed. Sync this with the upstream version and put it in
kernel-shared/uapi to maintain some semblance of where this file comes
from.
There are some changes that need to be synced back to kernel. A local
definition of static_assert is used to avoid compilation problems on gcc
(< 9) due to mandatory 2nd parameter.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
While syncing messages.[ch] I had to back out the ASSERT() code in
kerncompat.h, which means we now rely on the kernel code for ASSERT().
In order to maintain some semblance of separation introduce UASSERT()
and use that in all the purely userspace code.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_RESULT is defined to make sure we
differentiate internal errors from actual error codes that come back
from the device replace ioctl. Take this out of ioctl.c and move it
into replace.c.
Though it's in public header ioctl.h, there are no users for that so it
can be moved.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Replace fprintf(stderr, ...) by the level-aware helper. No change for
commands that don't have the global -q/-v options, otherwise the output
can be quieted.
Signed-off-by: David Sterba <dsterba@suse.com>
The (unsigned long long) type casts can be dropped, printf understands
%llu and u64 and does not warn. In cases where the type is not u64 keep
the cast.
Signed-off-by: David Sterba <dsterba@suse.com>
Switch the remaining use of assert() as it lacks the verbose assert that
we have for ASSERT (but otherwise is equivalent).
Signed-off-by: David Sterba <dsterba@suse.com>
Lots of code still uses fprintf(stderr, "...") that should be the
error() helper. The kernel-shared code is left out of the conversion for
now.
Signed-off-by: David Sterba <dsterba@suse.com>
The preferred order:
- system headers
- standard headers
- libraries
- kernel library
- kernel shared
- common headers
- other tools
- own headers
Signed-off-by: David Sterba <dsterba@suse.com>
Add constant for initial value to avoid unexpected clashes with user
defined getopt values and shift the common size getopt values.
Signed-off-by: David Sterba <dsterba@suse.com>
The commands initializing a new device (mkfs, device add) do discard by
default, while this is missing from replace start. For parity add the
options with same name and semantics.
Issue: #390
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>
This patch checks 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>
When replace starts with no-background and fails for the reason that
a BTRFS_FS_EXCL_OP is in progress, we still return the value 0 and also
leak the target device open, because in cmd_replace_start() we missed
the goto leave_with_error for this error.
So the test case btrfs/064 in its seqres.full output reports...
Replacing /dev/sdf with /dev/sdc
ERROR: /dev/sdc is mounted
instead of...
Replacing /dev/sdc with /dev/sdf
ERROR: ioctl(DEV_REPLACE_START) '/mnt/scratch': add/delete/balance/replace/resize operation in progress
for the failed replace attempts in the test case
Fix it by jumping to the error label which also fixes the leaked open
device.
Signed-off-by: Anand Jain <anand.jain@oracle.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>
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>
