1LVSCAN(8) System Manager's Manual LVSCAN(8)
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6 lvscan - List all logical volumes in all volume groups
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9 lvscan
10 [ option_args ]
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13 lvscan scans all VGs or all supported LVM block devices in the system
14 for LVs. The output consists of one line for each LV indicating whether
15 or not it is active, a snapshot or origin, the size of the device and
16 its allocation policy. Use lvs(8) or lvdisplay(8) to obtain more com‐
17 prehensive information about LVs.
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20 lvscan
21 [ -a|--all ]
22 [ -b|--blockdevice ]
23 [ --ignorelockingfailure ]
24 [ --readonly ]
25 [ --reportformat basic|json ]
26 [ COMMON_OPTIONS ]
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28 Common options for lvm:
29 [ -d|--debug ]
30 [ -h|--help ]
31 [ -q|--quiet ]
32 [ -t|--test ]
33 [ -v|--verbose ]
34 [ -y|--yes ]
35 [ --commandprofile String ]
36 [ --config String ]
37 [ --driverloaded y|n ]
38 [ --lockopt String ]
39 [ --longhelp ]
40 [ --nolocking ]
41 [ --profile String ]
42 [ --version ]
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45 -a|--all
46 Show information about internal LVs. These are components of
47 normal LVs, such as mirrors, which are not independently acces‐
48 sible, e.g. not mountable.
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50 -b|--blockdevice
51 No longer used.
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53 --commandprofile String
54 The command profile to use for command configuration. See
55 lvm.conf(5) for more information about profiles.
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57 --config String
58 Config settings for the command. These override lvm.conf set‐
59 tings. The String arg uses the same format as lvm.conf, or may
60 use section/field syntax. See lvm.conf(5) for more information
61 about config.
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63 -d|--debug ...
64 Set debug level. Repeat from 1 to 6 times to increase the detail
65 of messages sent to the log file and/or syslog (if configured).
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67 --driverloaded y|n
68 If set to no, the command will not attempt to use device-mapper.
69 For testing and debugging.
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71 -h|--help
72 Display help text.
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74 --ignorelockingfailure
75 Allows a command to continue with read-only metadata operations
76 after locking failures.
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78 --lockopt String
79 Used to pass options for special cases to lvmlockd. See lvm‐
80 lockd(8) for more information.
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82 --longhelp
83 Display long help text.
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85 --nolocking
86 Disable locking.
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88 --profile String
89 An alias for --commandprofile or --metadataprofile, depending on
90 the command.
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92 -q|--quiet ...
93 Suppress output and log messages. Overrides --debug and --ver‐
94 bose. Repeat once to also suppress any prompts with answer
95 'no'.
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97 --readonly
98 Run the command in a special read-only mode which will read on-
99 disk metadata without needing to take any locks. This can be
100 used to peek inside metadata used by a virtual machine image
101 while the virtual machine is running. No attempt will be made to
102 communicate with the device-mapper kernel driver, so this option
103 is unable to report whether or not LVs are actually in use.
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105 --reportformat basic|json
106 Overrides current output format for reports which is defined
107 globally by the report/output_format setting in lvm.conf. basic
108 is the original format with columns and rows. If there is more
109 than one report per command, each report is prefixed with the
110 report name for identification. json produces report output in
111 JSON format. See lvmreport(7) for more information.
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113 -t|--test
114 Run in test mode. Commands will not update metadata. This is
115 implemented by disabling all metadata writing but nevertheless
116 returning success to the calling function. This may lead to
117 unusual error messages in multi-stage operations if a tool
118 relies on reading back metadata it believes has changed but
119 hasn't.
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121 -v|--verbose ...
122 Set verbose level. Repeat from 1 to 4 times to increase the
123 detail of messages sent to stdout and stderr.
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125 --version
126 Display version information.
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128 -y|--yes
129 Do not prompt for confirmation interactively but always assume
130 the answer yes. Use with extreme caution. (For automatic no,
131 see -qq.)
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134 String
135 See the option description for information about the string con‐
136 tent.
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138 Size[UNIT]
139 Size is an input number that accepts an optional unit. Input
140 units are always treated as base two values, regardless of capi‐
141 talization, e.g. 'k' and 'K' both refer to 1024. The default
142 input unit is specified by letter, followed by |UNIT. UNIT rep‐
143 resents other possible input units: bBsSkKmMgGtTpPeE. b|B is
144 bytes, s|S is sectors of 512 bytes, k|K is kilobytes, m|M is
145 megabytes, g|G is gigabytes, t|T is terabytes, p|P is petabytes,
146 e|E is exabytes. (This should not be confused with the output
147 control --units, where capital letters mean multiple of 1000.)
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150 See lvm(8) for information about environment variables used by lvm.
151 For example, LVM_VG_NAME can generally be substituted for a required VG
152 parameter.
153
155 lvm(8) lvm.conf(5) lvmconfig(8)
156
157 pvchange(8) pvck(8) pvcreate(8) pvdisplay(8) pvmove(8) pvremove(8)
158 pvresize(8) pvs(8) pvscan(8)
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160 vgcfgbackup(8) vgcfgrestore(8) vgchange(8) vgck(8) vgcreate(8) vgcon‐
161 vert(8) vgdisplay(8) vgexport(8) vgextend(8) vgimport(8) vgimport‐
162 clone(8) vgmerge(8) vgmknodes(8) vgreduce(8) vgremove(8) vgrename(8)
163 vgs(8) vgscan(8) vgsplit(8)
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165 lvcreate(8) lvchange(8) lvconvert(8) lvdisplay(8) lvextend(8) lvre‐
166 duce(8) lvremove(8) lvrename(8) lvresize(8) lvs(8) lvscan(8)
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168 lvm-fullreport(8) lvm-lvpoll(8) lvm2-activation-generator(8) blkdeacti‐
169 vate(8) lvmdump(8)
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171 dmeventd(8) lvmpolld(8) lvmlockd(8) lvmlockctl(8) cmirrord(8) lvmd‐
172 busd(8)
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174 lvmsystemid(7) lvmreport(7) lvmraid(7) lvmthin(7) lvmcache(7)
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178Red Hat, Inc. LVM TOOLS 2.03.02(2)-RHEL8 (2019-01-04) LVSCAN(8)