[PATCH 9/9] libxfs: break out fs shutdown manpage

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>

Create a separate manual page for the fs shutdown ioctl so we can
document how it works.

Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
 man/man2/ioctl_xfs_goingdown.2 |   61 ++++++++++++++++++++++++++++++++++++++++
 man/man3/xfsctl.3              |    7 +++++
 2 files changed, 68 insertions(+)
 create mode 100644 man/man2/ioctl_xfs_goingdown.2


diff --git a/man/man2/ioctl_xfs_goingdown.2 b/man/man2/ioctl_xfs_goingdown.2
new file mode 100644
index 00000000..e9a56f28
--- /dev/null
+++ b/man/man2/ioctl_xfs_goingdown.2
@@ -0,0 +1,61 @@
+.\" Copyright (c) 2019, Oracle.  All rights reserved.
+.\"
+.\" %%%LICENSE_START(GPLv2+_DOC_FULL)
+.\" SPDX-License-Identifier: GPL-2.0+
+.\" %%%LICENSE_END
+.TH IOCTL-XFS-GOINGDOWN 2 2019-04-16 "XFS"
+.SH NAME
+ioctl_xfs_goingdown \- shut down an XFS filesystem
+.SH SYNOPSIS
+.br
+.B #include <xfs/xfs_fs.h>
+.PP
+.BI "int ioctl(int " fd ", XFS_IOC_GOINGDOWN, uint32_t " flags );
+.SH DESCRIPTION
+Shuts down a live XFS filesystem.
+This is a software initiated hard shutdown and should be avoided whenever
+possible.
+After this call completes, the filesystem will be totally unusable and must be
+unmounted.
+
+.PP
+.I flags
+can be one of the following:
+.RS 0.4i
+.TP
+.B XFS_FSOP_GOING_FLAGS_DEFAULT
+Flush all dirty data and in-core state to disk, flush the log, then shut down.
+.TP
+.B XFS_FSOP_GOING_FLAGS_LOGFLUSH
+Flush all pending transactions to the log, then shut down, leaving all dirty
+data unwritten.
+.TP
+.B XFS_FSOP_GOING_FLAGS_NOLOGFLUSH
+Shut down, leaving all dirty transactions and dirty data.
+
+.SH RETURN VALUE
+On error, \-1 is returned, and
+.I errno
+is set to indicate the error.
+.PP
+.SH ERRORS
+Error codes can be one of, but are not limited to, the following:
+.TP
+.B EFSBADCRC
+Metadata checksum validation failed while performing the query.
+.TP
+.B EFSCORRUPTED
+Metadata corruption was encountered while performing the query.
+.TP
+.B EINVAL
+The specified allocation group number is not valid for this filesystem.
+.TP
+.B EIO
+An I/O error was encountered while performing the query.
+.TP
+.B EPERM
+Caller did not have permission to shut down the filesystem.
+.SH CONFORMING TO
+This API is specific to XFS filesystem on the Linux kernel.
+.SH SEE ALSO
+.BR ioctl (2)
diff --git a/man/man3/xfsctl.3 b/man/man3/xfsctl.3
index e0986afb..ca96a007 100644
--- a/man/man3/xfsctl.3
+++ b/man/man3/xfsctl.3
@@ -365,6 +365,12 @@ See
 for more information.
 Save yourself a lot of frustration and avoid these ioctls.
 
+.TP
+.B XFS_IOC_GOINGDOWN
+See
+.BR ioctl_xfs_goingdown (2)
+for more information.
+
 .PP
 .nf
 .B XFS_IOC_THAW
@@ -387,6 +393,7 @@ as they are not of general use to applications.
 .BR ioctl_xfs_fscounts (2),
 .BR ioctl_xfs_getresblks (2),
 .BR ioctl_xfs_getbmap (2),
+.BR ioctl_xfs_goingdown (2),
 .BR fstatfs (2),
 .BR statfs (2),
 .BR xfs (5),




[Index of Archives]     [XFS Filesystem Development (older mail)]     [Linux Filesystem Development]     [Linux Audio Users]     [Yosemite Trails]     [Linux Kernel]     [Linux RAID]     [Linux SCSI]


  Powered by Linux