54af0088fb
config: remove HAVE_FILE_FADVISE
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
f4c4df1638
config: remove HAVE_BIO_BI_STATUS and bio error compat
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
6e3b863df3
config: remove HAVE_[24]ARGS_VFS_GETATTR
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
30a2907ce9
config: remove HAVE_RENAME2
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
6a00b01385
config: remove HAVE_GENERIC_SETXATTR
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
0f15852981
config: remove HAVE_FILE_AIO_FSYNC
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
e055f0e053
config: remove HAVE_XATTR_LIST_SIMPLE
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
e6713cfd54
config: remove HAVE_XATTR_(GET|SET|LIST)_HANDLER
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
79c307def9
config: remove HAVE_XATTR_HANDLER_NAME
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
72d3fa215f
config: remove HAVE_VFS_ITERATE/HAVE_VFS_ITERATE_SHARED
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
df35eab0bf
config: remove HAVE_VFS_COPY_FILE_RANGE
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
95d85f032f
config: remove HAVE_(GET|PUT)_LINK_DELAYED
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
7cc89f83ff
config: remove HAVE_POSIX_ACL_VALID_WITH_NS
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
a1832d1ecb
config: remove HAVE_KERNEL_GET_ACL_HANDLE_CACHE
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
9b6f93a72f
config: remove HAVE_GROUP_INFO_GID
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
bbc52ed501
config: remove HAVE_CPU_HOTPLUG
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
afcc0fb0fa
config: remove HAVE_1ARG_SUBMIT_BIO
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
9a1c7240ba
config: remove HAVE_RENAME2_OPERATIONS_WRAPPER
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
230bc538cb
config: remove HAVE_VFS_FILE_OPERATIONS_EXTEND
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
9914684d36
config: remove HAVE_NEW_SYNC_READ
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
733317966f
config: remove HAVE_XATTR_(GET|SET|LIST)_DENTRY
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
eb73000dbb
config: remove HAVE_WAIT_ON_BIT_ACTION
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
a987057c67
config: remove HAVE_VFS_DIRECT_IO_ITER_RW_OFFSET
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
c9e8d0e0b5
config: remove HAVE_PUT_LINK_NAMEIDATA
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
99c143a5a1
config: remove HAVE_FOLLOW_LINK_NAMEIDATA
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
ed048fdc5b
config: remove HAVE_D_REVALIDATE_NAMEIDATA
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
ec6ba977b7
config: remove HAVE_3ARGS_VFS_GETATTR
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
1a64c06ec0
config: remove SHRINK_CONTROL_HAS_NID
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
72be1f4062
config: remove HAVE_VFS_RW_ITERATE
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
f3d30f1ce0
config: remove HAVE_USER_NS_COMMON_INUM
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
b545b07b2f
config: remove HAVE_SPLIT_SHRINKER_CALLBACK and HAVE_SINGLE_SHRINKER_CALLBACK
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
d60d4ad809
config: remove HAVE_SET_CACHED_ACL_USABLE
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
6840e3b18b
config: remove HAVE_SET_ACL
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
3d37b1d6d4
config: remove HAVE_POSIX_ACL_RELEASE and HAVE_POSIX_ACL_RELEASE_GPL_ONLY
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:50 -07:00
583e2e25b9
config: remove HAVE_PERCPU_COUNTER_INIT_WITH_GFP
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:49 -07:00
f07485c46e
config: remove HAVE_LINUX_BLK_CGROUP_HEADER
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:49 -07:00
d4bbe2ff38
config: remove HAVE_IO_SCHEDULE_TIMEOUT
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:49 -07:00
714d7666e5
config: remove HAVE_INODE_SET_FLAGS
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:49 -07:00
cf006e3496
config: remove HAVE_GENERIC_WRITE_CHECKS_KIOCB
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:49 -07:00
7af642af4d
config: remove HAVE_FSYNC_RANGE
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:49 -07:00
525f06b5f6
config: remove HAVE_FALLOC_FL_ZERO_RANGE
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:49 -07:00
f70ffacdfc
config: remove HAVE_ENCODE_FH_WITH_INODE
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:49 -07:00
8e002ee26e
config: remove HAVE_D_PRUNE_ALIASES
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:49 -07:00
92f7ec6075
config: remove HAVE_DIRTY_INODE_WITH_FLAGS
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:49 -07:00
233bed67a8
config: remove HAVE_1ARG_BIO_END_IO_T
...
Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de >
Signed-off-by: Rob Norris <robn@despairlabs.com >
Closes #16479
2024-09-18 11:23:40 -07:00
ac04407ffe
Remove extra newline from spa_set_allocator().
...
zfs_dbgmsg() does not need newline at the end of the message.
While there, slightly update/sync FreeBSD __dprintf().
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov >
Signed-off-by: Alexander Motin <mav@FreeBSD.org >
Sponsored by: iXsystems, Inc.
Closes #16536
2024-09-17 13:15:42 -07:00
a10e552b99
Adding Direct IO Support
...
Adding O_DIRECT support to ZFS to bypass the ARC for writes/reads.
O_DIRECT support in ZFS will always ensure there is coherency between
buffered and O_DIRECT IO requests. This ensures that all IO requests,
whether buffered or direct, will see the same file contents at all
times. Just as in other FS's , O_DIRECT does not imply O_SYNC. While
data is written directly to VDEV disks, metadata will not be synced
until the associated TXG is synced.
For both O_DIRECT read and write request the offset and request sizes,
at a minimum, must be PAGE_SIZE aligned. In the event they are not,
then EINVAL is returned unless the direct property is set to always (see
below).
For O_DIRECT writes:
The request also must be block aligned (recordsize) or the write
request will take the normal (buffered) write path. In the event that
request is block aligned and a cached copy of the buffer in the ARC,
then it will be discarded from the ARC forcing all further reads to
retrieve the data from disk.
For O_DIRECT reads:
The only alignment restrictions are PAGE_SIZE alignment. In the event
that the requested data is in buffered (in the ARC) it will just be
copied from the ARC into the user buffer.
For both O_DIRECT writes and reads the O_DIRECT flag will be ignored in
the event that file contents are mmap'ed. In this case, all requests
that are at least PAGE_SIZE aligned will just fall back to the buffered
paths. If the request however is not PAGE_SIZE aligned, EINVAL will
be returned as always regardless if the file's contents are mmap'ed.
Since O_DIRECT writes go through the normal ZIO pipeline, the
following operations are supported just as with normal buffered writes:
Checksum
Compression
Encryption
Erasure Coding
There is one caveat for the data integrity of O_DIRECT writes that is
distinct for each of the OS's supported by ZFS.
FreeBSD - FreeBSD is able to place user pages under write protection so
any data in the user buffers and written directly down to the
VDEV disks is guaranteed to not change. There is no concern
with data integrity and O_DIRECT writes.
Linux - Linux is not able to place anonymous user pages under write
protection. Because of this, if the user decides to manipulate
the page contents while the write operation is occurring, data
integrity can not be guaranteed. However, there is a module
parameter `zfs_vdev_direct_write_verify` that controls the
if a O_DIRECT writes that can occur to a top-level VDEV before
a checksum verify is run before the contents of the I/O buffer
are committed to disk. In the event of a checksum verification
failure the write will return EIO. The number of O_DIRECT write
checksum verification errors can be observed by doing
`zpool status -d`, which will list all verification errors that
have occurred on a top-level VDEV. Along with `zpool status`, a
ZED event will be issues as `dio_verify` when a checksum
verification error occurs.
ZVOLs and dedup is not currently supported with Direct I/O.
A new dataset property `direct` has been added with the following 3
allowable values:
disabled - Accepts O_DIRECT flag, but silently ignores it and treats
the request as a buffered IO request.
standard - Follows the alignment restrictions outlined above for
write/read IO requests when the O_DIRECT flag is used.
always - Treats every write/read IO request as though it passed
O_DIRECT and will do O_DIRECT if the alignment restrictions
are met otherwise will redirect through the ARC. This
property will not allow a request to fail.
There is also a module parameter zfs_dio_enabled that can be used to
force all reads and writes through the ARC. By setting this module
parameter to 0, it mimics as if the direct dataset property is set to
disabled.
Reviewed-by: Brian Behlendorf <behlendorf@llnl.gov >
Reviewed-by: Alexander Motin <mav@FreeBSD.org >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
Signed-off-by: Brian Atkinson <batkinson@lanl.gov >
Co-authored-by: Mark Maybee <mark.maybee@delphix.com >
Co-authored-by: Matt Macy <mmacy@FreeBSD.org >
Co-authored-by: Brian Behlendorf <behlendorf@llnl.gov >
Closes #10018
2024-09-14 13:47:59 -07:00
308f7c2f14
Fix an uninitialized data access ( #16511 )
...
zfs_acl_node_alloc allocates an uninitialized data buffer, but upstack
zfs_acl_chmod only partially initializes it. KMSAN reported that this
memory remained uninitialized at the point when it was read by
lzjb_compress, which suggests a possible kernel memory disclosure bug.
The full KMSAN warning may be found in the PR.
https://github.com/openzfs/zfs/pull/16511
Signed-off-by: Alan Somers <asomers@gmail.com >
Sponsored by: Axcient
Reviewed-by: Alexander Motin <mav@FreeBSD.org >
Reviewed-by: Tony Hutter <hutter2@llnl.gov >
2024-09-10 09:08:45 -07:00
bf8c61f489
Remove unused sysctl node
...
PR #14953 removed vdev-level read cache but accidentally left this
sysctl node behind.
Reviewed-by: Rich Ercolani <rincebrain@gmail.com >
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Reviewed-by: Alexander Motin <mav@FreeBSD.org >
Signed-off-by: Seth Hoffert <seth.hoffert@gmail.com >
Closes #16493
2024-09-03 17:52:33 -07:00
73866cf346
Fix issig() to check signal_pending after dequeue SIGSTOP/SIGTSTP
...
When process got SIGSTOP/SIGTSTP, issig() dequeue them and return 0.
But process could still have another signal pending after dequeue. So,
after dequeue, check and return 1, if signal_pending.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov >
Signed-off-by: Jitendra Patidar <jitendra.patidar@nutanix.com >
Closes #16464
2024-08-26 17:36:49 -07:00
Rob Norris