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- whitespace change only (translators may igore)

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Jason Helfman 2016-03-06 20:19:49 +00:00
parent 18994155f6
commit a50bf6247e
Notes: svn2git 2020-12-08 03:00:23 +00:00 
svn path=/head/; revision=48349
1 changed files with 13 additions and 15 deletions
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en_US.ISO8859-1/books/arch-handbook/driverbasics/chapter.xml
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@ -387,22 +387,20 @@ Closing device "echo".</screen>
operations, depriving the application of the ability to know the
exact disk contents at any one instant in time.</para>
<para>
This makes predictable and reliable crash recovery of on-disk
data structures (filesystems, databases etc.) impossible. Since
writes may be delayed, there is no way the kernel can report to
the application which particular write operation encountered a
write error, this further compounds the consistency
problem.</para>
<para>This makes predictable and reliable crash recovery of
on-disk data structures (filesystems, databases etc.)
impossible. Since writes may be delayed, there is no way
the kernel can report to the application which particular
write operation encountered a write error, this further
compounds the consistency problem.</para>
<para>
For this reason, no serious applications rely on block devices,
and in fact, almost all applications which access disks directly
take great pains to specify that character (or
<quote>raw</quote>) devices should always be used. Because the
implementation of the aliasing of each disk (partition) to two
devices with different semantics significantly complicated the
relevant kernel code &os; dropped support for cached disk
<para>For this reason, no serious applications rely on block
devices, and in fact, almost all applications which access
disks directly take great pains to specify that character
(or <quote>raw</quote>) devices should always be used. Because
the implementation of the aliasing of each disk (partition) to
two devices with different semantics significantly complicated
the relevant kernel code &os; dropped support for cached disk
devices as part of the modernization of the disk I/O
infrastructure.</para>
</sect1>