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mount.8: mention that the snapshot option is exclusive
When using the snapshot option, all other options are ignored. This update reflects changes made inab2dbd9b87
. Reviewed by: 0mp, mckusick Differential Revision: https://reviews.freebsd.org/D34584 (cherry picked from commit8772a9117b
)
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@ -28,7 +28,7 @@
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.\" @(#)mount.8 8.8 (Berkeley) 6/16/94
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.\" @(#)mount.8 8.8 (Berkeley) 6/16/94
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.\" $FreeBSD$
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.\" $FreeBSD$
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.\"
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.\"
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.Dd May 18, 2021
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.Dd March 17, 2022
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.Dt MOUNT 8
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.Dt MOUNT 8
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.Os
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.Os
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.Sh NAME
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.Sh NAME
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@ -276,11 +276,13 @@ The same as
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.Fl r ;
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.Fl r ;
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mount the file system read-only (even the super-user may not write it).
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mount the file system read-only (even the super-user may not write it).
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.It Cm snapshot
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.It Cm snapshot
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This option allows a snapshot of the specified file system to be taken.
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Take a snapshot of the specified filesystem.
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When this option is used, all other options are ignored.
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The
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The
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.Fl u
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.Fl u
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flag is required with this option.
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flag is required with this option.
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Note that snapshot files must be created in the file system that is being
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.Pp
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Snapshot files must be created in the file system that is being
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snapshotted.
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snapshotted.
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You may create up to 20 snapshots per file system.
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You may create up to 20 snapshots per file system.
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Active snapshots are recorded in the superblock, so they persist across unmount
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Active snapshots are recorded in the superblock, so they persist across unmount
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