diff options
Diffstat (limited to 'sysconfig.txt')
| -rw-r--r-- | sysconfig.txt | 38 |
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 |