| syncer.4 (96711) | syncer.4 (107788) |
|---|---|
| 1.\" Copyright (c) 2000 Sheldon Hearn <sheldonh@FreeBSD.org> 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 8 unchanged lines hidden (view full) --- 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" | 1.\" Copyright (c) 2000 Sheldon Hearn <sheldonh@FreeBSD.org> 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 8 unchanged lines hidden (view full) --- 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" |
| 25.\" $FreeBSD: head/share/man/man4/syncer.4 96711 2002-05-16 05:21:58Z trhodes $ | 25.\" $FreeBSD: head/share/man/man4/syncer.4 107788 2002-12-12 17:26:04Z ru $ |
| 26.\" 27.Dd July 14, 2000 28.Dt SYNCER 4 29.Os 30.Sh NAME 31.Nm syncer | 26.\" 27.Dd July 14, 2000 28.Dt SYNCER 4 29.Os 30.Sh NAME 31.Nm syncer |
| 32.Nd filesystem synchronizer kernel process | 32.Nd file system synchronizer kernel process |
| 33.Sh SYNOPSIS 34.Nm 35.Sh DESCRIPTION 36The 37.Nm 38kernel process helps protect the integrity of disk volumes | 33.Sh SYNOPSIS 34.Nm 35.Sh DESCRIPTION 36The 37.Nm 38kernel process helps protect the integrity of disk volumes |
| 39by flushing volatile cached filesystem data to disk. | 39by flushing volatile cached file system data to disk. |
| 40.Pp 41The kernel places all 42.Xr vnode 9 Ns 's 43in a number of queues. 44The 45.Nm 46process works through the queues 47in a round-robin fashion, --- 34 unchanged lines hidden (view full) --- 82A kernel initiated 83.Sq update 84process first appeared in 85.Fx 2.0 . 86.Sh BUGS 87It is possible on some systems that a 88.Xr sync 2 89occurring simultaneously with a crash may cause | 40.Pp 41The kernel places all 42.Xr vnode 9 Ns 's 43in a number of queues. 44The 45.Nm 46process works through the queues 47in a round-robin fashion, --- 34 unchanged lines hidden (view full) --- 82A kernel initiated 83.Sq update 84process first appeared in 85.Fx 2.0 . 86.Sh BUGS 87It is possible on some systems that a 88.Xr sync 2 89occurring simultaneously with a crash may cause |
| 90filesystem damage. See | 90file system damage. See |
| 91.Xr fsck 8 . | 91.Xr fsck 8 . |