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.Nd "disk concatenation control utility"
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.Sh SYNOPSIS
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.Nm
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.Ar create
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.Cm create
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.Op Fl v
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.Ar name
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.Ar dev1
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.Ar dev2
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.Op Ar dev3 Op Ar ...
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.Nm
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.Ar label
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.Cm label
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.Op Fl v
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.Ar name
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.Ar dev1
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.Ar dev2
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.Op Ar dev3 Op Ar ...
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.Nm
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.Ar destroy
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.Cm destroy
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.Op Fl fv
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.Ar name
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.Nm
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.Ar clear
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.Cm clear
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.Op Fl v
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.Ar dev1
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.Op Ar dev2 Op Ar ...
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.Nm
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.Ar list
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.Cm list
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.Sh DESCRIPTION
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The
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.Nm
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@ -66,19 +66,19 @@ or
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.Dq automatic .
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When using the
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.Dq manual
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method no metadata are stored on the devices, so the concatenated
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method, no metadata are stored on the devices, so the concatenated
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device has to be configured by hand every time it is needed.
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The
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.Dq automatic
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method use on\-disk metadata to detect devices.
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Once devices are labeled they will be automatically detected and
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method use on-disk metadata to detect devices.
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Once devices are labeled, they will be automatically detected and
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configured.
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.Pp
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The first argument to
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.Nm
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indicate an action to be performed:
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.Bl -tag -width ".Ar destroy"
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.It Ar create
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indicates an action to be performed:
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.Bl -tag -width ".Cm destroy"
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.It Cm create
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Concatenate the given devices with specified
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.Ar name .
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This is the
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@ -87,7 +87,7 @@ method.
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The kernel module
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.Pa geom_concat.ko
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will be loaded if it is not loaded already.
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.It Ar label
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.It Cm label
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Concatenate the given devices with the specified
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.Ar name .
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This is the
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@ -96,26 +96,25 @@ method, where metadata are stored in every device's last sector.
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The kernel module
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.Pa geom_concat.ko
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will be loaded if it is not loaded already.
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.It Ar destroy
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.It Cm destroy
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Turn off existing concatenate device by its
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.Ar name .
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.It Ar clear
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Clear metadata on given device(s).
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.It Ar list
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List currently configured device(s).
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.It Cm clear
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Clear metadata on given devices.
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.It Cm list
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List currently configured devices.
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.El
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.Pp
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Additional options:
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.Bl -tag -width ".Fl f"
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.Bl -tag -width indent
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.It Fl f
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Force removal of specified concatenated device.
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Force the removal of the specified concatenated device.
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.It Fl v
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Be more verbose.
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.El
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.Sh EXAMPLES
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The following example show how to configure four disks for automatic
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The following example shows how to configure four disks for automatic
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concatenation, create file system on it, and mount it:
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.Pp
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.Bd -literal -offset indent
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gconcat label -v data /dev/da0 /dev/da1 /dev/da2 /dev/da3
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newfs /dev/data.concat
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@ -129,11 +128,7 @@ Exit status is 0 on success, and 1 if the command fails.
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.Xr newfs 8 ,
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.Xr vinum 8
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.Sh AUTHORS
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.An -split
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The
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.Nm
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utility as well as this manual page was written by
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.An Pawel Jakub Dawidek Aq pjd@FreeBSD.org .
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.An Pawel Jakub Dawidek Aq pjd@FreeBSD.org
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.Sh HISTORY
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The
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.Nm
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