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While configurable at runtime, the DEBUG mode assert failure behavior is usually either desired or not for a particular situation. For example, developers using kernel modules may prefer for fatal asserts to remain disabled across module reloads while QE engineers doing broad regression testing may prefer to have fatal asserts enabled on boot to facilitate data collection for bug reports. To provide a compromise/convenience for developers, create a Kconfig option that sets the default value of the DEBUG mode 'bug_on_assert' sysfs tunable. The default behavior remains to trigger kernel BUGs on assert failures to preserve existing behavior across kernel configuration updates with DEBUG mode enabled. Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
111 lines
4.2 KiB
Text
111 lines
4.2 KiB
Text
config XFS_FS
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tristate "XFS filesystem support"
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depends on BLOCK
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depends on (64BIT || LBDAF)
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select EXPORTFS
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select LIBCRC32C
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select FS_IOMAP
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help
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XFS is a high performance journaling filesystem which originated
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on the SGI IRIX platform. It is completely multi-threaded, can
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support large files and large filesystems, extended attributes,
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variable block sizes, is extent based, and makes extensive use of
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Btrees (directories, extents, free space) to aid both performance
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and scalability.
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Refer to the documentation at <http://oss.sgi.com/projects/xfs/>
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for complete details. This implementation is on-disk compatible
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with the IRIX version of XFS.
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To compile this file system support as a module, choose M here: the
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module will be called xfs. Be aware, however, that if the file
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system of your root partition is compiled as a module, you'll need
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to use an initial ramdisk (initrd) to boot.
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config XFS_QUOTA
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bool "XFS Quota support"
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depends on XFS_FS
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select QUOTACTL
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help
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If you say Y here, you will be able to set limits for disk usage on
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a per user and/or a per group basis under XFS. XFS considers quota
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information as filesystem metadata and uses journaling to provide a
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higher level guarantee of consistency. The on-disk data format for
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quota is also compatible with the IRIX version of XFS, allowing a
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filesystem to be migrated between Linux and IRIX without any need
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for conversion.
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If unsure, say N. More comprehensive documentation can be found in
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README.quota in the xfsprogs package. XFS quota can be used either
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with or without the generic quota support enabled (CONFIG_QUOTA) -
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they are completely independent subsystems.
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config XFS_POSIX_ACL
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bool "XFS POSIX ACL support"
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depends on XFS_FS
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select FS_POSIX_ACL
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help
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POSIX Access Control Lists (ACLs) support permissions for users and
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groups beyond the owner/group/world scheme.
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To learn more about Access Control Lists, visit the POSIX ACLs for
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Linux website <http://acl.bestbits.at/>.
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If you don't know what Access Control Lists are, say N.
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config XFS_RT
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bool "XFS Realtime subvolume support"
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depends on XFS_FS
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help
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If you say Y here you will be able to mount and use XFS filesystems
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which contain a realtime subvolume. The realtime subvolume is a
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separate area of disk space where only file data is stored. It was
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originally designed to provide deterministic data rates suitable
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for media streaming applications, but is also useful as a generic
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mechanism for ensuring data and metadata/log I/Os are completely
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separated. Regular file I/Os are isolated to a separate device
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from all other requests, and this can be done quite transparently
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to applications via the inherit-realtime directory inode flag.
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See the xfs man page in section 5 for additional information.
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If unsure, say N.
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config XFS_WARN
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bool "XFS Verbose Warnings"
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depends on XFS_FS && !XFS_DEBUG
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help
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Say Y here to get an XFS build with many additional warnings.
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It converts ASSERT checks to WARN, so will log any out-of-bounds
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conditions that occur that would otherwise be missed. It is much
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lighter weight than XFS_DEBUG and does not modify algorithms and will
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not cause the kernel to panic on non-fatal errors.
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However, similar to XFS_DEBUG, it is only advisable to use this if you
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are debugging a particular problem.
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config XFS_DEBUG
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bool "XFS Debugging support"
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depends on XFS_FS
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help
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Say Y here to get an XFS build with many debugging features,
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including ASSERT checks, function wrappers around macros,
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and extra sanity-checking functions in various code paths.
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Note that the resulting code will be HUGE and SLOW, and probably
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not useful unless you are debugging a particular problem.
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Say N unless you are an XFS developer, or you play one on TV.
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config XFS_ASSERT_FATAL
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bool "XFS fatal asserts"
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default y
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depends on XFS_FS && XFS_DEBUG
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help
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Set the default DEBUG mode ASSERT failure behavior.
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Say Y here to cause DEBUG mode ASSERT failures to result in fatal
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errors that BUG() the kernel by default. If you say N, ASSERT failures
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result in warnings.
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This behavior can be modified at runtime via sysfs.
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