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- Committer: Bazaar Package Importer
- Author(s): Bastian Blank
- Date: 2010-06-04 11:47:51 UTC
- mto: (1.3.1 upstream) (3.1.11 sid)
- mto: This revision was merged to the branch mainline in revision 54.
- Revision ID: james.westby@ubuntu.com-20100604114751-suf9sag0lbcpsc2s
Import upstream version 2.02.66
- files added:
- doc/example.conf.in
- files removed:
- doc/example.conf
- files modified:
- Makefile.in
added
removed
doc/example.conf
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# This is an example configuration file for the LVM2 system.
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# It contains the default settings that would be used if there was no
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# /etc/lvm/lvm.conf file.
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#
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# Refer to 'man lvm.conf' for further information including the file layout.
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#
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# To put this file in a different directory and override /etc/lvm set
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# the environment variable LVM_SYSTEM_DIR before running the tools.
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# This section allows you to configure which block devices should
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# be used by the LVM system.
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devices {
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# Where do you want your volume groups to appear ?
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dir = "/dev"
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# An array of directories that contain the device nodes you wish
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# to use with LVM2.
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scan = [ "/dev" ]
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# If several entries in the scanned directories correspond to the
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# same block device and the tools need to display a name for device,
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# all the pathnames are matched against each item in the following
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# list of regular expressions in turn and the first match is used.
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preferred_names = [ ]
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# Try to avoid using undescriptive /dev/dm-N names, if present.
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# preferred_names = [ "^/dev/mpath/", "^/dev/mapper/mpath", "^/dev/[hs]d" ]
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# A filter that tells LVM2 to only use a restricted set of devices.
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# The filter consists of an array of regular expressions. These
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# expressions can be delimited by a character of your choice, and
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# prefixed with either an 'a' (for accept) or 'r' (for reject).
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# The first expression found to match a device name determines if
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# the device will be accepted or rejected (ignored). Devices that
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# don't match any patterns are accepted.
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# Be careful if there there are symbolic links or multiple filesystem
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# entries for the same device as each name is checked separately against
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# the list of patterns. The effect is that if any name matches any 'a'
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# pattern, the device is accepted; otherwise if any name matches any 'r'
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# pattern it is rejected; otherwise it is accepted.
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# Don't have more than one filter line active at once: only one gets used.
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# Run vgscan after you change this parameter to ensure that
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# the cache file gets regenerated (see below).
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# If it doesn't do what you expect, check the output of 'vgscan -vvvv'.
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# By default we accept every block device:
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filter = [ "a/.*/" ]
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# Exclude the cdrom drive
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# filter = [ "r|/dev/cdrom|" ]
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# When testing I like to work with just loopback devices:
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# filter = [ "a/loop/", "r/.*/" ]
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# Or maybe all loops and ide drives except hdc:
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# filter =[ "a|loop|", "r|/dev/hdc|", "a|/dev/ide|", "r|.*|" ]
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# Use anchors if you want to be really specific
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# filter = [ "a|^/dev/hda8$|", "r/.*/" ]
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# The results of the filtering are cached on disk to avoid
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# rescanning dud devices (which can take a very long time).
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# By default this cache is stored in the /etc/lvm/cache directory
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# in a file called '.cache'.
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# It is safe to delete the contents: the tools regenerate it.
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# (The old setting 'cache' is still respected if neither of
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# these new ones is present.)
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cache_dir = "/etc/lvm/cache"
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cache_file_prefix = ""
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# You can turn off writing this cache file by setting this to 0.
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write_cache_state = 1
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# Advanced settings.
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# List of pairs of additional acceptable block device types found
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# in /proc/devices with maximum (non-zero) number of partitions.
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# types = [ "fd", 16 ]
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# If sysfs is mounted (2.6 kernels) restrict device scanning to
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# the block devices it believes are valid.
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# 1 enables; 0 disables.
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sysfs_scan = 1
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# By default, LVM2 will ignore devices used as components of
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# software RAID (md) devices by looking for md superblocks.
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# 1 enables; 0 disables.
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md_component_detection = 1
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# By default, if a PV is placed directly upon an md device, LVM2
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# will align its data blocks with the md device's stripe-width.
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# 1 enables; 0 disables.
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md_chunk_alignment = 1
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# By default, the start of a PV's data area will be a multiple of
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# the 'minimum_io_size' or 'optimal_io_size' exposed in sysfs.
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# - minimum_io_size - the smallest request the device can perform
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# w/o incurring a read-modify-write penalty (e.g. MD's chunk size)
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# - optimal_io_size - the device's preferred unit of receiving I/O
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# (e.g. MD's stripe width)
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# minimum_io_size is used if optimal_io_size is undefined (0).
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# If md_chunk_alignment is enabled, that detects the optimal_io_size.
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# This setting takes precedence over md_chunk_alignment.
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# 1 enables; 0 disables.
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data_alignment_detection = 1
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# Alignment (in KB) of start of data area when creating a new PV.
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# If a PV is placed directly upon an md device and md_chunk_alignment or
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# data_alignment_detection is enabled this parameter is ignored.
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# Set to 0 for the default alignment of 64KB or page size, if larger.
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data_alignment = 0
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# By default, the start of the PV's aligned data area will be shifted by
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# the 'alignment_offset' exposed in sysfs. This offset is often 0 but
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# may be non-zero; e.g.: certain 4KB sector drives that compensate for
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# windows partitioning will have an alignment_offset of 3584 bytes
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# (sector 7 is the lowest aligned logical block, the 4KB sectors start
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# at LBA -1, and consequently sector 63 is aligned on a 4KB boundary).
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# 1 enables; 0 disables.
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data_alignment_offset_detection = 1
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# If, while scanning the system for PVs, LVM2 encounters a device-mapper
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# device that has its I/O suspended, it waits for it to become accessible.
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# Set this to 1 to skip such devices. This should only be needed
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# in recovery situations.
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ignore_suspended_devices = 0
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}
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# This section that allows you to configure the nature of the
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# information that LVM2 reports.
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log {
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# Controls the messages sent to stdout or stderr.
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# There are three levels of verbosity, 3 being the most verbose.
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verbose = 0
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# Should we send log messages through syslog?
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# 1 is yes; 0 is no.
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syslog = 1
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# Should we log error and debug messages to a file?
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# By default there is no log file.
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#file = "/var/log/lvm2.log"
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# Should we overwrite the log file each time the program is run?
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# By default we append.
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overwrite = 0
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# What level of log messages should we send to the log file and/or syslog?
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# There are 6 syslog-like log levels currently in use - 2 to 7 inclusive.
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# 7 is the most verbose (LOG_DEBUG).
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level = 0
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# Format of output messages
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# Whether or not (1 or 0) to indent messages according to their severity
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indent = 1
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# Whether or not (1 or 0) to display the command name on each line output
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command_names = 0
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# A prefix to use before the message text (but after the command name,
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# if selected). Default is two spaces, so you can see/grep the severity
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# of each message.
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prefix = " "
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# To make the messages look similar to the original LVM tools use:
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# indent = 0
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# command_names = 1
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# prefix = " -- "
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# Set this if you want log messages during activation.
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# Don't use this in low memory situations (can deadlock).
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# activation = 0
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}
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# Configuration of metadata backups and archiving. In LVM2 when we
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# talk about a 'backup' we mean making a copy of the metadata for the
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# *current* system. The 'archive' contains old metadata configurations.
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# Backups are stored in a human readeable text format.
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backup {
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# Should we maintain a backup of the current metadata configuration ?
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# Use 1 for Yes; 0 for No.
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# Think very hard before turning this off!
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backup = 1
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# Where shall we keep it ?
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# Remember to back up this directory regularly!
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backup_dir = "/etc/lvm/backup"
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# Should we maintain an archive of old metadata configurations.
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# Use 1 for Yes; 0 for No.
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# On by default. Think very hard before turning this off.
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archive = 1
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# Where should archived files go ?
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# Remember to back up this directory regularly!
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archive_dir = "/etc/lvm/archive"
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# What is the minimum number of archive files you wish to keep ?
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retain_min = 10
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# What is the minimum time you wish to keep an archive file for ?
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retain_days = 30
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}
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# Settings for the running LVM2 in shell (readline) mode.
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shell {
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# Number of lines of history to store in ~/.lvm_history
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history_size = 100
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}
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# Miscellaneous global LVM2 settings
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global {
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# The file creation mask for any files and directories created.
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# Interpreted as octal if the first digit is zero.
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umask = 077
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# Allow other users to read the files
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#umask = 022
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# Enabling test mode means that no changes to the on disk metadata
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# will be made. Equivalent to having the -t option on every
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# command. Defaults to off.
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test = 0
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# Default value for --units argument
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units = "h"
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# Since version 2.02.54, the tools distinguish between powers of
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# 1024 bytes (e.g. KiB, MiB, GiB) and powers of 1000 bytes (e.g.
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# KB, MB, GB).
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# If you have scripts that depend on the old behaviour, set this to 0
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# temporarily until you update them.
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si_unit_consistency = 1
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# Whether or not to communicate with the kernel device-mapper.
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# Set to 0 if you want to use the tools to manipulate LVM metadata
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# without activating any logical volumes.
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# If the device-mapper kernel driver is not present in your kernel
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# setting this to 0 should suppress the error messages.
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activation = 1
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# If we can't communicate with device-mapper, should we try running
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# the LVM1 tools?
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# This option only applies to 2.4 kernels and is provided to help you
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# switch between device-mapper kernels and LVM1 kernels.
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# The LVM1 tools need to be installed with .lvm1 suffices
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# e.g. vgscan.lvm1 and they will stop working after you start using
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# the new lvm2 on-disk metadata format.
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# The default value is set when the tools are built.
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# fallback_to_lvm1 = 0
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# The default metadata format that commands should use - "lvm1" or "lvm2".
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# The command line override is -M1 or -M2.
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# Defaults to "lvm2".
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# format = "lvm2"
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# Location of proc filesystem
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proc = "/proc"
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# Type of locking to use. Defaults to local file-based locking (1).
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# Turn locking off by setting to 0 (dangerous: risks metadata corruption
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# if LVM2 commands get run concurrently).
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# Type 2 uses the external shared library locking_library.
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# Type 3 uses built-in clustered locking.
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# Type 4 uses read-only locking which forbids any operations that might
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# change metadata.
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locking_type = 1
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# Set to 0 to fail when a lock request cannot be satisfied immediately.
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wait_for_locks = 1
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# If using external locking (type 2) and initialisation fails,
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# with this set to 1 an attempt will be made to use the built-in
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# clustered locking.
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# If you are using a customised locking_library you should set this to 0.
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fallback_to_clustered_locking = 1
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# If an attempt to initialise type 2 or type 3 locking failed, perhaps
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# because cluster components such as clvmd are not running, with this set
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# to 1 an attempt will be made to use local file-based locking (type 1).
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# If this succeeds, only commands against local volume groups will proceed.
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# Volume Groups marked as clustered will be ignored.
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fallback_to_local_locking = 1
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# Local non-LV directory that holds file-based locks while commands are
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# in progress. A directory like /tmp that may get wiped on reboot is OK.
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locking_dir = "/var/lock/lvm"
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# Whenever there are competing read-only and read-write access requests for
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# a volume group's metadata, instead of always granting the read-only
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# requests immediately, delay them to allow the read-write requests to be
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# serviced. Without this setting, write access may be stalled by a high
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# volume of read-only requests.
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# NB. This option only affects locking_type = 1 viz. local file-based
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# locking.
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prioritise_write_locks = 1
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# Other entries can go here to allow you to load shared libraries
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# e.g. if support for LVM1 metadata was compiled as a shared library use
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# format_libraries = "liblvm2format1.so"
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# Full pathnames can be given.
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# Search this directory first for shared libraries.
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# library_dir = "/lib"
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# The external locking library to load if locking_type is set to 2.
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# locking_library = "liblvm2clusterlock.so"
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# Treat any internal errors as fatal errors, aborting the process that
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# encountered the internal error. Please only enable for debugging.
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abort_on_internal_errors = 0
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}
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activation {
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# Set to 0 to disable udev synchronisation (if compiled into the binaries).
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# Processes will not wait for notification from udev.
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# They will continue irrespective of any possible udev processing
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# in the background. You should only use this if udev is not running
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# or has rules that ignore the devices LVM2 creates.
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# The command line argument --nodevsync takes precedence over this setting.
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# If set to 1 when udev is not running, and there are LVM2 processes
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# waiting for udev, run 'dmsetup udevcomplete_all' manually to wake them up.
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udev_sync = 1
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# Set to 0 to disable the udev rules installed by LVM2 (if built with
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# --enable-udev_rules). LVM2 will then manage the /dev nodes and symlinks
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# for active logical volumes directly itself.
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# N.B. Manual intervention may be required if this setting is changed
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# while any logical volumes are active.
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udev_rules = 1
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# How to fill in missing stripes if activating an incomplete volume.
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# Using "error" will make inaccessible parts of the device return
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# I/O errors on access. You can instead use a device path, in which
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# case, that device will be used to in place of missing stripes.
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# But note that using anything other than "error" with mirrored
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# or snapshotted volumes is likely to result in data corruption.
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missing_stripe_filler = "error"
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# How much stack (in KB) to reserve for use while devices suspended
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reserved_stack = 256
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# How much memory (in KB) to reserve for use while devices suspended
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reserved_memory = 8192
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# Nice value used while devices suspended
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process_priority = -18
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# If volume_list is defined, each LV is only activated if there is a
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# match against the list.
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# "vgname" and "vgname/lvname" are matched exactly.
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# "@tag" matches any tag set in the LV or VG.
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# "@*" matches if any tag defined on the host is also set in the LV or VG
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#
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# volume_list = [ "vg1", "vg2/lvol1", "@tag1", "@*" ]
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# Size (in KB) of each copy operation when mirroring
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mirror_region_size = 512
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# Setting to use when there is no readahead value stored in the metadata.
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#
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# "none" - Disable readahead.
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# "auto" - Use default value chosen by kernel.
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readahead = "auto"
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# 'mirror_image_fault_policy' and 'mirror_log_fault_policy' define
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# how a device failure affecting a mirror is handled.
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# A mirror is composed of mirror images (copies) and a log.
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# A disk log ensures that a mirror does not need to be re-synced
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# (all copies made the same) every time a machine reboots or crashes.
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#
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# In the event of a failure, the specified policy will be used to determine
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# what happens. This applies to automatic repairs (when the mirror is being
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# monitored by dmeventd) and to manual lvconvert --repair when
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# --use-policies is given.
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#
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# "remove" - Simply remove the faulty device and run without it. If
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# the log device fails, the mirror would convert to using
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# an in-memory log. This means the mirror will not
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# remember its sync status across crashes/reboots and
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# the entire mirror will be re-synced. If a
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# mirror image fails, the mirror will convert to a
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# non-mirrored device if there is only one remaining good
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# copy.
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#
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# "allocate" - Remove the faulty device and try to allocate space on
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# a new device to be a replacement for the failed device.
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# Using this policy for the log is fast and maintains the
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# ability to remember sync state through crashes/reboots.
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# Using this policy for a mirror device is slow, as it
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# requires the mirror to resynchronize the devices, but it
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# will preserve the mirror characteristic of the device.
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# This policy acts like "remove" if no suitable device and
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# space can be allocated for the replacement.
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#
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# "allocate_anywhere" - Not yet implemented. Useful to place the log device
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# temporarily on same physical volume as one of the mirror
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# images. This policy is not recommended for mirror devices
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# since it would break the redundant nature of the mirror. This
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# policy acts like "remove" if no suitable device and space can
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# be allocated for the replacement.
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mirror_log_fault_policy = "allocate"
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mirror_image_fault_policy = "remove"
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# While activating devices, I/O to devices being (re)configured is
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# suspended, and as a precaution against deadlocks, LVM2 needs to pin
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# any memory it is using so it is not paged out. Groups of pages that
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# are known not to be accessed during activation need not be pinned
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# into memory. Each string listed in this setting is compared against
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# each line in /proc/self/maps, and the pages corresponding to any
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# lines that match are not pinned. On some systems locale-archive was
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# found to make up over 80% of the memory used by the process.
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# mlock_filter = [ "locale/locale-archive", "gconv/gconv-modules.cache" ]
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# Set to 1 to revert to the default behaviour prior to version 2.02.62
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# which used mlockall() to pin the whole process's memory while activating
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# devices.
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use_mlockall = 0
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# Monitoring is enabled by default when activating logical volumes.
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# Set to 0 to disable monitoring or use the --ignoremonitoring option.
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monitoring = 1
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# When pvmove or lvconvert must wait for the kernel to finish
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# synchronising or merging data, they check and report progress
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# at intervals of this number of seconds. The default is 15 seconds.
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# If this is set to 0 and there is only one thing to wait for, there
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# are no progress reports, but the process is awoken immediately the
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# operation is complete.
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polling_interval = 15
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}
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####################
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# Advanced section #
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####################
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# Metadata settings
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#
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# metadata {
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# Default number of copies of metadata to hold on each PV. 0, 1 or 2.
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# You might want to override it from the command line with 0
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# when running pvcreate on new PVs which are to be added to large VGs.
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# pvmetadatacopies = 1
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# Approximate default size of on-disk metadata areas in sectors.
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# You should increase this if you have large volume groups or
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# you want to retain a large on-disk history of your metadata changes.
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# pvmetadatasize = 255
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# List of directories holding live copies of text format metadata.
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# These directories must not be on logical volumes!
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# It's possible to use LVM2 with a couple of directories here,
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# preferably on different (non-LV) filesystems, and with no other
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# on-disk metadata (pvmetadatacopies = 0). Or this can be in
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# addition to on-disk metadata areas.
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# The feature was originally added to simplify testing and is not
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# supported under low memory situations - the machine could lock up.
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#
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# Never edit any files in these directories by hand unless you
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# you are absolutely sure you know what you are doing! Use
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# the supplied toolset to make changes (e.g. vgcfgrestore).
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# dirs = [ "/etc/lvm/metadata", "/mnt/disk2/lvm/metadata2" ]
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#}
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# Event daemon
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#
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dmeventd {
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# mirror_library is the library used when monitoring a mirror device.
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#
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# "libdevmapper-event-lvm2mirror.so" attempts to recover from
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# failures. It removes failed devices from a volume group and
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# reconfigures a mirror as necessary. If no mirror library is
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# provided, mirrors are not monitored through dmeventd.
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mirror_library = "libdevmapper-event-lvm2mirror.so"
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# snapshot_library is the library used when monitoring a snapshot device.
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#
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# "libdevmapper-event-lvm2snapshot.so" monitors the filling of
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# snapshots and emits a warning through syslog, when the use of
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# snapshot exceedes 80%. The warning is repeated when 85%, 90% and
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# 95% of the snapshot are filled.
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snapshot_library = "libdevmapper-event-lvm2snapshot.so"
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}
Loggerhead is a web-based interface for Breezy
Version: 2.0.1