diff options
author | charnier <charnier@FreeBSD.org> | 2002-07-06 19:34:18 +0000 |
---|---|---|
committer | charnier <charnier@FreeBSD.org> | 2002-07-06 19:34:18 +0000 |
commit | a2accd01f0ac2f25d72443923819abceaf128119 (patch) | |
tree | 219860332a065e5cb6defc25dab58e4a8c7997cd /sbin/ccdconfig | |
parent | 9639b20db64d084fa58b75058a2bd896b1f743e1 (diff) | |
download | FreeBSD-src-a2accd01f0ac2f25d72443923819abceaf128119.zip FreeBSD-src-a2accd01f0ac2f25d72443923819abceaf128119.tar.gz |
The .Nm utility
Diffstat (limited to 'sbin/ccdconfig')
-rw-r--r-- | sbin/ccdconfig/ccdconfig.8 | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/sbin/ccdconfig/ccdconfig.8 b/sbin/ccdconfig/ccdconfig.8 index c2f76c3..fc662f9 100644 --- a/sbin/ccdconfig/ccdconfig.8 +++ b/sbin/ccdconfig/ccdconfig.8 @@ -63,8 +63,9 @@ .Fl g .Op Ar ccd Op Ar ... .Sh DESCRIPTION -.Nm Ccdconfig -is used to dynamically configure and unconfigure concatenated disk +The +.Nm +utility is used to dynamically configure and unconfigure concatenated disk devices, or ccds. For more information about the ccd, see .Xr ccd 4 . .Pp @@ -130,8 +131,12 @@ The component devices need to name partitions of type as shown by .Xr disklabel 8 ) . .Sh EXAMPLES -A number of ccdconfig examples are shown below. The arguments passed -to ccdconfig are exactly the same as you might place in the +A number of +.Nm +examples are shown below. The arguments passed +to +.Nm +are exactly the same as you might place in the .Pa /etc/ccd.conf configuration file. The first example creates a 4-disk stripe out of four scsi disk partitions. The stripe uses a 64 sector interleave. @@ -178,8 +183,7 @@ An error on a ccd disk is usually unrecoverable unless you are using the mirroring option. But mirroring has its own perils: It assumes that both copies of the data at any given sector are the same. This holds true until a write error occurs or until you replace either side of the mirror. -.Nm Ccd -uses a poor-man's mirroring implementation. It works well enough that if +This is a poor-man's mirroring implementation. It works well enough that if you begin to get disk errors you should be able to backup the ccd disk, replace the broken hardware, and then regenerate the ccd disk. If you need more than this you should look into external hardware RAID SCSI boxes, @@ -199,5 +203,5 @@ default ccd configuration file .Sh HISTORY The .Nm -command first appeared in +utility first appeared in .Nx 1.0a . |