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Fix a bunch typos, one fix of which is from docs/10794
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2020-12-20 02:59:44 +00:00
svn path=/head/; revision=46195
@ -23,7 +23,7 @@
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $Id: sd.4,v 1.11 1997/04/01 04:04:09 jdp Exp $
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.\" $Id: da.4,v 1.12 1998/10/16 03:28:12 ken Exp $
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.\"
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.Dd October 15, 1998
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.Dt DA 4
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@ -76,7 +76,7 @@ and
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respectively.
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.Pp
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If an uninitialized disk is opened, the slice table will be
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initialized with a ficticious
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initialized with a fictitious
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.Tn FreeBSD
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slice spanning the entire disk. Similarly, if an uninitialized
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(or
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@ -86,14 +86,14 @@ by the drive and a single
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.Sq Li c
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partition encompassing the entire slice.
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.Sh CACHE EFFECTS
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Many direct access devices are equiped with read and/or write caches.
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Many direct access devices are equipped with read and/or write caches.
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Parameters affecting the device's cache are stored in mode page 8,
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the caching control page. Mode pages can be examined and modified
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via the
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.Xr camcontrol 8
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utility.
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The read cache is used to store data from device initiated read ahead
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The read cache is used to store data from device-initiated read ahead
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operations as well as frequently used data. The read cache is transparant
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to the user and can be enabled without any adverse effect. Most devices
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with a read cache come from the factory with it enabled. The read cache
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@ -115,7 +115,7 @@ Power Supply (UPS). The
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device driver ensures that the cache and media are synchronized upon
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final close of the device or an unexpected shutdown (panic) event. This
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ensures that it is safe to disconnect power once the operating system
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has reported that it has halted. The write cache can be enabeled by
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has reported that it has halted. The write cache can be enabled by
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setting the
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.Tn WCE
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(Write Cache Enable) bit in the caching control mode page.
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@ -123,7 +123,7 @@ setting the
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The
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.Nm da
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device driver will take full advantage of the SCSI feature known as tagged
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queuing. Tagged queuing allows the device to process multiple transaction
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queuing. Tagged queuing allows the device to process multiple transactions
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concurrently, often re-ordering them to reduce the number and length of
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seeks. To ensure that transactions to distant portions of the media,
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which may be deferred indefinitely by servicing requests nearer the current
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@ -132,10 +132,10 @@ transaction is sent every 15 seconds during continuous device operation.
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.Sh BAD BLOCK RECOVERY
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Direct Access devices have the capability of mapping out portions of
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defective media. Media recovery parameters are located in mode page 1,
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the Read-Write Error Recovery mode page. The most imporatant media
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the Read-Write Error Recovery mode page. The most important media
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remapping features are 'Auto Write Reallocation' and 'Auto Read
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Reallocation' which can be enabled via the AWRE and ARRE bits,
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respecitvely, of the Read-Write Error Recovery page.
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respectively, of the Read-Write Error Recovery page.
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Many devices do not ship from the factory with these feature enabled.
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Mode pages can be examined and modified
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via the
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@ -164,7 +164,7 @@ drives incorporate their own bad-block mapping so this command is not
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implemented.
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.It Dv DIOCGDINFO
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Read, from the kernel, the in-core copy of the disklabel for the
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drive. This may be a ficticious disklabel if the drive has never
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drive. This may be a fictitious disklabel if the drive has never
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been initialized, in which case it will contain information read
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from the
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.Tn SCSI
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@ -183,9 +183,9 @@ Give the driver a new disklabel to use. The driver
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write the new disklabel to the disk.
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.El
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.Sh NOTES
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If device becomes invalidated (media is removed, device becomes unresponsive)
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If a device becomes invalidated (media is removed, device becomes unresponsive)
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the disklabel and information held within the kernel about the device will
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be invalided. To avoid corruption of a newly inserted piece of media or
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be invalidated. To avoid corruption of a newly inserted piece of media or
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a replacement device, all accesses to the device will be discarded until
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the last file descriptor referencing the old device is closed. During this
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period, all new open attempts will be rejected.
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