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1 | # This is an example configuration file for the LVM2 system. | ||
2 | # It contains the default settings that would be used if there was no | ||
3 | # /etc/lvm/lvm.conf file. | ||
4 | # | ||
5 | # Refer to 'man lvm.conf' for further information including the file layout. | ||
6 | # | ||
7 | # To put this file in a different directory and override /etc/lvm set | ||
8 | # the environment variable LVM_SYSTEM_DIR before running the tools. | ||
9 | |||
10 | |||
11 | # This section allows you to configure which block devices should | ||
12 | # be used by the LVM system. | ||
13 | devices { | ||
14 | |||
15 | # Where do you want your volume groups to appear ? | ||
16 | dir = "/dev" | ||
17 | |||
18 | # An array of directories that contain the device nodes you wish | ||
19 | # to use with LVM2. | ||
20 | scan = [ "/dev" ] | ||
21 | |||
22 | # A filter that tells LVM2 to only use a restricted set of devices. | ||
23 | # The filter consists of an array of regular expressions. These | ||
24 | # expressions can be delimited by a character of your choice, and | ||
25 | # prefixed with either an 'a' (for accept) or 'r' (for reject). | ||
26 | # The first expression found to match a device name determines if | ||
27 | # the device will be accepted or rejected (ignored). Devices that | ||
28 | # don't match any patterns are accepted. | ||
29 | |||
30 | # Be careful if there there are symbolic links or multiple filesystem | ||
31 | # entries for the same device as each name is checked separately against | ||
32 | # the list of patterns. The effect is that if any name matches any 'a' | ||
33 | # pattern, the device is accepted; otherwise if any name matches any 'r' | ||
34 | # pattern it is rejected; otherwise it is accepted. | ||
35 | |||
36 | # Don't have more than one filter line active at once: only one gets used. | ||
37 | |||
38 | # Run vgscan after you change this parameter to ensure that | ||
39 | # the cache file gets regenerated (see below). | ||
40 | # If it doesn't do what you expect, check the output of 'vgscan -vvvv'. | ||
41 | |||
42 | |||
43 | # By default we accept every block device: | ||
44 | filter = [ "a/.*/" ] | ||
45 | |||
46 | # Exclude the cdrom drive | ||
47 | # filter = [ "r|/dev/cdrom|" ] | ||
48 | |||
49 | # When testing I like to work with just loopback devices: | ||
50 | # filter = [ "a/loop/", "r/.*/" ] | ||
51 | |||
52 | # Or maybe all loops and ide drives except hdc: | ||
53 | # filter =[ "a|loop|", "r|/dev/hdc|", "a|/dev/ide|", "r|.*|" ] | ||
54 | |||
55 | # Use anchors if you want to be really specific | ||
56 | # filter = [ "a|^/dev/hda8$|", "r/.*/" ] | ||
57 | |||
58 | # The results of the filtering are cached on disk to avoid | ||
59 | # rescanning dud devices (which can take a very long time). By | ||
60 | # default this cache file is hidden in the /etc/lvm directory. | ||
61 | # It is safe to delete this file: the tools regenerate it. | ||
62 | cache = "/etc/lvm/.cache" | ||
63 | |||
64 | # You can turn off writing this cache file by setting this to 0. | ||
65 | write_cache_state = 1 | ||
66 | |||
67 | # Advanced settings. | ||
68 | |||
69 | # List of pairs of additional acceptable block device types found | ||
70 | # in /proc/devices with maximum (non-zero) number of partitions. | ||
71 | # types = [ "fd", 16 ] | ||
72 | |||
73 | # If sysfs is mounted (2.6 kernels) restrict device scanning to | ||
74 | # the block devices it believes are valid. | ||
75 | # 1 enables; 0 disables. | ||
76 | sysfs_scan = 1 | ||
77 | |||
78 | # By default, LVM2 will ignore devices used as components of | ||
79 | # software RAID (md) devices by looking for md superblocks. | ||
80 | # 1 enables; 0 disables. | ||
81 | md_component_detection = 1 | ||
82 | } | ||
83 | |||
84 | # This section that allows you to configure the nature of the | ||
85 | # information that LVM2 reports. | ||
86 | log { | ||
87 | |||
88 | # Controls the messages sent to stdout or stderr. | ||
89 | # There are three levels of verbosity, 3 being the most verbose. | ||
90 | verbose = 0 | ||
91 | |||
92 | # Should we send log messages through syslog? | ||
93 | # 1 is yes; 0 is no. | ||
94 | syslog = 1 | ||
95 | |||
96 | # Should we log error and debug messages to a file? | ||
97 | # By default there is no log file. | ||
98 | #file = "/var/log/lvm2.log" | ||
99 | |||
100 | # Should we overwrite the log file each time the program is run? | ||
101 | # By default we append. | ||
102 | overwrite = 0 | ||
103 | |||
104 | # What level of log messages should we send to the log file and/or syslog? | ||
105 | # There are 6 syslog-like log levels currently in use - 2 to 7 inclusive. | ||
106 | # 7 is the most verbose (LOG_DEBUG). | ||
107 | level = 0 | ||
108 | |||
109 | # Format of output messages | ||
110 | # Whether or not (1 or 0) to indent messages according to their severity | ||
111 | indent = 1 | ||
112 | |||
113 | # Whether or not (1 or 0) to display the command name on each line output | ||
114 | command_names = 0 | ||
115 | |||
116 | # A prefix to use before the message text (but after the command name, | ||
117 | # if selected). Default is two spaces, so you can see/grep the severity | ||
118 | # of each message. | ||
119 | prefix = " " | ||
120 | |||
121 | # To make the messages look similar to the original LVM tools use: | ||
122 | # indent = 0 | ||
123 | # command_names = 1 | ||
124 | # prefix = " -- " | ||
125 | |||
126 | # Set this if you want log messages during activation. | ||
127 | # Don't use this in low memory situations (can deadlock). | ||
128 | # activation = 0 | ||
129 | } | ||
130 | |||
131 | # Configuration of metadata backups and archiving. In LVM2 when we | ||
132 | # talk about a 'backup' we mean making a copy of the metadata for the | ||
133 | # *current* system. The 'archive' contains old metadata configurations. | ||
134 | # Backups are stored in a human readeable text format. | ||
135 | backup { | ||
136 | |||
137 | # Should we maintain a backup of the current metadata configuration ? | ||
138 | # Use 1 for Yes; 0 for No. | ||
139 | # Think very hard before turning this off! | ||
140 | backup = 1 | ||
141 | |||
142 | # Where shall we keep it ? | ||
143 | # Remember to back up this directory regularly! | ||
144 | backup_dir = "/etc/lvm/backup" | ||
145 | |||
146 | # Should we maintain an archive of old metadata configurations. | ||
147 | # Use 1 for Yes; 0 for No. | ||
148 | # On by default. Think very hard before turning this off. | ||
149 | archive = 1 | ||
150 | |||
151 | # Where should archived files go ? | ||
152 | # Remember to back up this directory regularly! | ||
153 | archive_dir = "/etc/lvm/archive" | ||
154 | |||
155 | # What is the minimum number of archive files you wish to keep ? | ||
156 | retain_min = 10 | ||
157 | |||
158 | # What is the minimum time you wish to keep an archive file for ? | ||
159 | retain_days = 30 | ||
160 | } | ||
161 | |||
162 | # Settings for the running LVM2 in shell (readline) mode. | ||
163 | shell { | ||
164 | |||
165 | # Number of lines of history to store in ~/.lvm_history | ||
166 | history_size = 100 | ||
167 | } | ||
168 | |||
169 | |||
170 | # Miscellaneous global LVM2 settings | ||
171 | global { | ||
172 | |||
173 | # The file creation mask for any files and directories created. | ||
174 | # Interpreted as octal if the first digit is zero. | ||
175 | umask = 077 | ||
176 | |||
177 | # Allow other users to read the files | ||
178 | #umask = 022 | ||
179 | |||
180 | # Enabling test mode means that no changes to the on disk metadata | ||
181 | # will be made. Equivalent to having the -t option on every | ||
182 | # command. Defaults to off. | ||
183 | test = 0 | ||
184 | |||
185 | # Whether or not to communicate with the kernel device-mapper. | ||
186 | # Set to 0 if you want to use the tools to manipulate LVM metadata | ||
187 | # without activating any logical volumes. | ||
188 | # If the device-mapper kernel driver is not present in your kernel | ||
189 | # setting this to 0 should suppress the error messages. | ||
190 | activation = 1 | ||
191 | |||
192 | # If we can't communicate with device-mapper, should we try running | ||
193 | # the LVM1 tools? | ||
194 | # This option only applies to 2.4 kernels and is provided to help you | ||
195 | # switch between device-mapper kernels and LVM1 kernels. | ||
196 | # The LVM1 tools need to be installed with .lvm1 suffices | ||
197 | # e.g. vgscan.lvm1 and they will stop working after you start using | ||
198 | # the new lvm2 on-disk metadata format. | ||
199 | # The default value is set when the tools are built. | ||
200 | # fallback_to_lvm1 = 0 | ||
201 | |||
202 | # The default metadata format that commands should use - "lvm1" or "lvm2". | ||
203 | # The command line override is -M1 or -M2. | ||
204 | # Defaults to "lvm1" if compiled in, else "lvm2". | ||
205 | # format = "lvm1" | ||
206 | |||
207 | # Location of proc filesystem | ||
208 | proc = "/proc" | ||
209 | |||
210 | # Type of locking to use. Defaults to file-based locking (1). | ||
211 | # Turn locking off by setting to 0 (dangerous: risks metadata corruption | ||
212 | # if LVM2 commands get run concurrently). | ||
213 | locking_type = 1 | ||
214 | |||
215 | # Local non-LV directory that holds file-based locks while commands are | ||
216 | # in progress. A directory like /tmp that may get wiped on reboot is OK. | ||
217 | locking_dir = "/var/lock/lvm" | ||
218 | |||
219 | # Other entries can go here to allow you to load shared libraries | ||
220 | # e.g. if support for LVM1 metadata was compiled as a shared library use | ||
221 | # format_libraries = "liblvm2format1.so" | ||
222 | # Full pathnames can be given. | ||
223 | |||
224 | # Search this directory first for shared libraries. | ||
225 | # library_dir = "/lib" | ||
226 | } | ||
227 | |||
228 | activation { | ||
229 | # Device used in place of missing stripes if activating incomplete volume. | ||
230 | # For now, you need to set this up yourself first (e.g. with 'dmsetup') | ||
231 | # For example, you could make it return I/O errors using the 'error' | ||
232 | # target or make it return zeros. | ||
233 | missing_stripe_filler = "/dev/ioerror" | ||
234 | |||
235 | # Size (in KB) of each copy operation when mirroring | ||
236 | mirror_region_size = 512 | ||
237 | |||
238 | # How much stack (in KB) to reserve for use while devices suspended | ||
239 | reserved_stack = 256 | ||
240 | |||
241 | # How much memory (in KB) to reserve for use while devices suspended | ||
242 | reserved_memory = 8192 | ||
243 | |||
244 | # Nice value used while devices suspended | ||
245 | process_priority = -18 | ||
246 | |||
247 | # If volume_list is defined, each LV is only activated if there is a | ||
248 | # match against the list. | ||
249 | # "vgname" and "vgname/lvname" are matched exactly. | ||
250 | # "@tag" matches any tag set in the LV or VG. | ||
251 | # "@*" matches if any tag defined on the host is also set in the LV or VG | ||
252 | # | ||
253 | # volume_list = [ "vg1", "vg2/lvol1", "@tag1", "@*" ] | ||
254 | } | ||
255 | |||
256 | |||
257 | #################### | ||
258 | # Advanced section # | ||
259 | #################### | ||
260 | |||
261 | # Metadata settings | ||
262 | # | ||
263 | # metadata { | ||
264 | # Default number of copies of metadata to hold on each PV. 0, 1 or 2. | ||
265 | # You might want to override it from the command line with 0 | ||
266 | # when running pvcreate on new PVs which are to be added to large VGs. | ||
267 | |||
268 | # pvmetadatacopies = 1 | ||
269 | |||
270 | # Approximate default size of on-disk metadata areas in sectors. | ||
271 | # You should increase this if you have large volume groups or | ||
272 | # you want to retain a large on-disk history of your metadata changes. | ||
273 | |||
274 | # pvmetadatasize = 255 | ||
275 | |||
276 | # List of directories holding live copies of text format metadata. | ||
277 | # These directories must not be on logical volumes! | ||
278 | # It's possible to use LVM2 with a couple of directories here, | ||
279 | # preferably on different (non-LV) filesystems, and with no other | ||
280 | # on-disk metadata (pvmetadatacopies = 0). Or this can be in | ||
281 | # addition to on-disk metadata areas. | ||
282 | # The feature was originally added to simplify testing and is not | ||
283 | # supported under low memory situations - the machine could lock up. | ||
284 | # | ||
285 | # Never edit any files in these directories by hand unless you | ||
286 | # you are absolutely sure you know what you are doing! Use | ||
287 | # the supplied toolset to make changes (e.g. vgcfgrestore). | ||
288 | |||
289 | # dirs = [ "/etc/lvm/metadata", "/mnt/disk2/lvm/metadata2" ] | ||
290 | #} | ||
291 | |||
292 | |||