Difference between revisions of "Device mapper"

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[[wikipedia:Device mapper]]
  
 
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/dev/[[mapper]]/
  /dev/[[mapper]]/
 
 
  /dev/[[mapper]]/control
 
  /dev/[[mapper]]/control
  
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  vgchange -a y VG_NAME
 
  vgchange -a y VG_NAME
 
   1 logical volume(s) in volume group "VG_NAME" now active
 
   1 logical volume(s) in volume group "VG_NAME" now active
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 +
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 +
  
 
== Related terms ==
 
== Related terms ==
 
* <code>[[multipath -l]]</code> (show the current multipath topology from information fetched in [[sysfs]] and the device mapper)
 
* <code>[[multipath -l]]</code> (show the current multipath topology from information fetched in [[sysfs]] and the device mapper)
 
* <code>[[/etc/fstab]]</code>
 
* <code>[[/etc/fstab]]</code>
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* <code>[[dm verity]]</code>
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* <code>[[dm mpath]]</code>
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* <code>[[resize2fs]]</code>
  
 
== Activities ==
 
== Activities ==

Latest revision as of 09:01, 14 February 2023

wikipedia:Device mapper

/dev/mapper/
/dev/mapper/control



vgchange -a|--activate y|n|ay
The block device for the LV is added or removed from the system using device-mapper in the kernel. A symbolic link /dev/VGName/LVName pointing to the device node is also added/removed.


vgchange -a n VG_NAME
 0 logical volume(s) in volume group "VG_NAME" now active
vgchange -a y VG_NAME
 1 logical volume(s) in volume group "VG_NAME" now active



Related terms[edit]

Activities[edit]

Related

See also[edit]

scan: pvscan vgscan
LVM: lvs lvmscan lvm fullreport lvmreport lvmconfig lvmdump lvmcheck lvm dumpconfig
Scan: pvs vgs lvs pvscan vgscan
PV: pvcreate pvremove pvscan pvremove pvscan pvs pvchange pvck pvdisplay pvresize
LV: lvdisplay lvcreate lvremove, lvresize, lvextend, lvreduce, lvrename
VG: vgdisplay,vgcreate,vgremove, vgextend, vgreduce, vgscan, vgchange, vgrename, vgcfgbackup, vgcfgrestore, vgimportclone, vgck
Check commands: pvck vgck

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