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RAID: Make "raid1" the default mirror segment type

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This commit is contained in:
Jonathan Brassow 2013-08-06 14:13:55 -05:00
parent f74e8fe044
commit 7e1083c985
5 changed files with 21 additions and 8 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.02.100 -
================================
Make "raid1" the default mirror segment type.
Fix clogd descriptor leak when daemonizing.
Fix clvmd descriptor leak on restart.
Add pipe_open/close() to replace less secure popen() glibc call.

2
conf/example.conf.in
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@ -512,7 +512,7 @@ global {
#
# Specify the '--type <mirror|raid1>' option to override this default
# setting.
mirror_segtype_default = "mirror"
mirror_segtype_default = "raid1"
# 'raid10_segtype_default' determines the segment types used by default
# when the '--stripes/-i' and '--mirrors/-m' arguments are both specified

2
lib/config/defaults.h
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@ -51,7 +51,7 @@
#define DEFAULT_METADATA_READ_ONLY 0
#define DEFAULT_LVDISPLAY_SHOWS_FULL_DEVICE_PATH 0
#define DEFAULT_MIRROR_SEGTYPE "mirror"
#define DEFAULT_MIRROR_SEGTYPE "raid1"
#define DEFAULT_MIRRORLOG "disk"
#define DEFAULT_MIRROR_LOG_FAULT_POLICY "allocate"
#define DEFAULT_MIRROR_IMAGE_FAULT_POLICY "remove"

7
man/lvconvert.8.in
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@ -141,7 +141,12 @@ Run the daemon in the background.
Specifies the degree of the mirror you wish to create.
For example, "\fB-m 1\fP" would convert the original logical
volume to a mirror volume with 2-sides; that is, a
linear volume plus one copy.
linear volume plus one copy. There are two implementations of mirroring
which correspond to the "raid1" and "mirror" segment types. The default
mirroring segment type is "raid1". If the legacy "mirror" segment type
is desired, the \fB\-\-type\fP argument must be used to explicitly
select the desired type. The \fB\-\-mirrorlog\fP and \fB\-\-corelog\fP
options below are only relevant to the legacy "mirror" segment type.
.TP
.IR \fB\-\-mirrorlog " {" disk | core | mirrored }
Specifies the type of log to use.

17
man/lvcreate.8.in
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@ -232,16 +232,23 @@ afterwards will be mirrored, but the original contents will not be
copied. This is useful for skipping a potentially long and resource
intensive initial sync of an empty device.
The optional argument \fB\-\-mirrorlog\fP specifies the type of log to be used.
There are two implementations of mirroring which can be used and correspond
to the "raid1" and "mirror" segment types. The default is "raid1". See the
\fB\-\-type\fP option for more information if you would like to use the
legacy "mirror" segment type. The \fB\-\-mirrorlog\fP and \fB\-\-corelog\fP
options apply to the "mirror" segment type only.
The optional argument \fB\-\-mirrorlog\fP specifies the type of log to be
used for logical volumes utilizing the legacy "mirror" segment type.
The default is \fIdisk\fP, which is persistent and requires
a small amount of storage space, usually on a separate device from the
data being mirrored. Using \fIcore\fP means the mirror is regenerated
by copying the data from the first device again each time the
device is activated, for example, after every reboot. Using \fImirrored\fP
by copying the data from the first device each time the logical
volume is activated, like after every reboot. Using \fImirrored\fP
will create a persistent log that is itself mirrored.
The optional argument \fB\-\-corelog\fP is equivalent
to \fB\-\-mirrorlog\fP \fIcore\fP.
When the legacy "mirror" segment type is used, the optional argument
\fB\-\-corelog\fP is equivalent to \fB\-\-mirrorlog\fP \fIcore\fP.
.TP
.IR \fB\-M ", " \fB\-\-persistent " {" y | n }
Set to \fIy\fP to make the minor number specified persistent.