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-rw-r--r--sysconfig.txt38
1 files changed, 34 insertions, 4 deletions
diff --git a/sysconfig.txt b/sysconfig.txt
index 89c64831..9168186c 100644
--- a/sysconfig.txt
+++ b/sysconfig.txt
@@ -225,7 +225,7 @@ Files in /etc/sysconfig
/etc/sysconfig/sendmail:
DAEMON=yes|no
- yes implies -bd
+ yes implies -bd (i.e., listen on port 25 for new mail)
QUEUE=1h
given to sendmail as -q$QUEUE
-q option is not given to sendmail if /etc/sysconfig/sendmail
@@ -264,6 +264,36 @@ Files in /etc/sysconfig
The above is used by the /sbin/setsysfont command (which is run
by rc.sysinit at boot time.)
+/etc/sysconfig/harddisks
+ These options are used to tune (E)IDE hard drives -
+ read the hdparm man page for more information
+
+ USE_DMA=1
+ Set this to 1 to enable DMA. This might cause some
+ data corruption on certain chipset / hard drive
+ combinations. USE WITH CAUTION AND BACKUP.
+ This is used with the "-d" option
+
+ MULTIPLE_IO=16
+ Multiple sector I/O. a feature of most modern IDE hard drives,
+ permitting the transfer of multiple sectors per I/O interrupt,
+ rather than the usual one sector per interrupt. When this feature
+ is enabled, it typically reduces operating system overhead for disk
+ I/O by 30-50%. On many systems, it also provides increased data
+ throughput of anywhere from 5% to 50%. Some drives, however (most
+ notably the WD Caviar series), seem to run slower with multiple mode
+ enabled. Under rare circumstances, such failures can result in
+ massive filesystem corruption. USE WITH CAUTION AND BACKUP.
+ This is the sector count for multiple sector I/O - the "-m" option
+
+ EIDE_32BIT=3
+ (E)IDE 32-bit I/O support (to interface card) (safe)
+
+ LOOKAHEAD=1
+ Enable drive read-lookahead (safe)
+
+ EXTRA_PARAMS=<anything>
+ Add any extra parameters you want to pass to hdparm here.
Files in /etc/sysconfig/network-scripts/
========================================
@@ -292,14 +322,14 @@ Files in /etc/sysconfig/network-scripts/
and interface change notification through netreport.
/etc/sysconfig/network-scripts/ifcfg-<interface-name> and
-/etc/sysconfig/network-scripts/ifcfg-<interface-name>-<clone-name>:
+/etc/sysconfig/network-scripts/ifcfg-<interface-name>:<alias-name>:
The first defines an interface, and the second contains
only the parts of the definition that are different in a
- "clone" (or alternative) interface. For example, the
+ "alias" (or alternative) interface. For example, the
network numbers might be different, but everything else
might be the same, so only the network numbers would be
- in the clone file, but all the device information would
+ in the alias file, but all the device information would
be in the base ifcfg file.
The items that can be defined in an ifcfg file depend on the