man/lvchange.8.in

   1 .TH LVCHANGE 8 "LVM TOOLS #VERSION#" "Sistina Software UK" \" -*- nroff -*-
   2 .SH NAME
   3 lvchange \- change attributes of a logical volume
   4 .SH SYNOPSIS
   5 .B lvchange
   6 .RB [ \-\-addtag
   7 .IR Tag ]
   8 .RB [ \-A | \-\-autobackup
   9 .RI { y | n }]
  10 .RB [ \-a | \-\-activate
  11 .RI [ e | l ]{ y | n }]
  12 .RB [ \-\-alloc
  13 .IR AllocationPolicy ]
  14 .RB [ \-C | \-\-contiguous
  15 .RI { y | n }]
  16 .RB [ \-d | \-\-debug ]
  17 .RB [ \-\-deltag
  18 .IR Tag ]
  19 .RB [ \-\-resync ]
  20 .RB [ \-h | \-? | \-\-help ]
  21 .RB [ \-\-ignorelockingfailure ]
  22 .RB [ \-\-ignoremonitoring ]
  23 .RB [ \-\-monitor
  24 .RI { y | n }]
  25 .RB [ \-\-poll
  26 .RI { y | n }]
  27 .RB [ \-\-sysinit ]
  28 .RB [ \-\-noudevsync ]
  29 .RB [ \-M | \-\-persistent
  30 .RI { y | n }]
  31 .RB [ \-\-minor
  32 .IR minor ]
  33 .RB [ \-P | \-\-partial ]
  34 .RB [ \-p | \-\-permission
  35 .RI { r | rw }]
  36 .RB [ \-r | \-\-readahead
  37 .RI { ReadAheadSectors | auto | none }]
  38 .RB [ \-\-refresh ]
  39 .RB [ \-t | \-\-test ]
  40 .RB [ \-v | \-\-verbose]
  41 .I LogicalVolumePath
  42 .RI [ LogicalVolumePath ...]
  43 .SH DESCRIPTION
  44 lvchange allows you to change the attributes of a logical volume
  45 including making them known to the kernel ready for use.
  46 .SH OPTIONS
  47 See \fBlvm\fP(8) for common options.
  48 .TP
  49 .BR \-a ", " \-\-activate " [" \fIe | \fIl ]{ \fIy | \fIn }
  50 Controls the availability of the logical volumes for use.
  51 Communicates with the kernel device-mapper driver via
  52 libdevmapper to activate (\-ay) or deactivate (\-an) the
  53 logical volumes.
  54 .IP
  55 If clustered locking is enabled, -aey will activate exclusively
  56 on one node and -aly will activate only on the local node.
  57 To deactivate only on the local node use -aln.
  58 Logical volumes with single-host snapshots are always activated
  59 exclusively because they can only be used on one node at once.
  60 .TP
  61 .BR \-C ", " \-\-contiguous " {" \fIy | \fIn }
  62 Tries to set or reset the contiguous allocation policy for
  63 logical volumes. It's only possible to change a non-contiguous
  64 logical volume's allocation policy to contiguous, if all of the
  65 allocated physical extents are already contiguous.
  66 .TP
  67 .B \-\-resync
  68 Forces the complete resynchronization of a mirror.  In normal
  69 circumstances you should not need this option because synchronization
  70 happens automatically.  Data is read from the primary mirror device
  71 and copied to the others, so this can take a considerable amount of
  72 time - and during this time you are without a complete redundant copy
  73 of your data.
  74 .TP
  75 .B \-\-minor \fIminor
  76 Set the minor number.
  77 .TP
  78 .BR \-\-monitor " {" \fIy | \fIn }
  79 Start or stop monitoring a mirrored or snapshot logical volume with
  80 dmeventd, if it is installed.
  81 If a device used by a monitored mirror reports an I/O error,
  82 the failure is handled according to
  83 \fBmirror_image_fault_policy\fP and \fBmirror_log_fault_policy\fP
  84 set in \fBlvm.conf\fP.
  85 .TP
  86 .BR \-\-poll " {" \fIy | \fIn }
  87 Without polling a logical volume's backgrounded transformation process
  88 will never complete.  If there is an incomplete pvmove or lvconvert (for
  89 example, on rebooting after a crash), use \fB\-\-poll y\fP to restart the
  90 process from its last checkpoint.  However, it may not be appropriate to
  91 immediately poll a logical volume when it is activated, use
  92 \fB\-\-poll n\fP to defer and then \fB\-\-poll y\fP to restart the process.
  93 .TP
  94 .B \-\-sysinit
  95 Indicates that \fBlvchange\fP(8) is being invoked from early system
  96 initialisation scripts (e.g. rc.sysinit or an initrd),
  97 before writeable filesystems are available. As such,
  98 some functionality needs to be disabled and this option
  99 acts as a shortcut which selects an appropriate set of options. Currently
 100 this is equivalent to using  \fB\-\-ignorelockingfailure\fP,
 101 \fB\-\-ignoremonitoring\fP, \fB\-\-poll n\fP and setting
 102 \fBLVM_SUPPRESS_LOCKING_FAILURE_MESSAGES\fP
 103 environment variable.
 104 .TP
 105 .B \-\-noudevsync
 106 Disable udev synchronisation. The
 107 process will not wait for notification from udev.
 108 It will continue irrespective of any possible udev processing
 109 in the background.  You should only use this if udev is not running
 110 or has rules that ignore the devices LVM2 creates.
 111 .TP
 112 .B \-\-ignoremonitoring
 113 Make no attempt to interact with dmeventd unless \fB\-\-monitor\fP
 114 is specified.
 115 Do not use this if dmeventd is already monitoring a device.
 116 .TP
 117 .BR \-M ", " \-\-persistent " {" \fIy | \fIn }
 118 Set to y to make the minor number specified persistent.
 119 .TP
 120 .BR \-p ", " \-\-permission " {" \fIr | \fIrw }
 121 Change access permission to read-only or read/write.
 122 .TP
 123 .BR \-r ", " \-\-readahead " {" \fIReadAheadSectors | \fIauto | \fInone }
 124 Set read ahead sector count of this logical volume.
 125 For volume groups with metadata in lvm1 format, this must
 126 be a value between 2 and 120 sectors.
 127 The default value is "auto" which allows the kernel to choose
 128 a suitable value automatically.
 129 "None" is equivalent to specifying zero.
 130 .TP
 131 .B \-\-refresh
 132 If the logical volume is active, reload its metadata.
 133 This is not necessary in normal operation, but may be useful
 134 if something has gone wrong or if you're doing clustering
 135 manually without a clustered lock manager.
 136 .SH Examples
 137 Changes the permission on volume lvol1 in volume group vg00 to be read-only:
 138 .sp
 139 .B lvchange -pr vg00/lvol1
 140 .SH SEE ALSO
 141 .BR lvm (8),
 142 .BR lvcreate (8),
 143 .BR vgchange (8)