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51 lines
1.6 KiB
Plaintext
51 lines
1.6 KiB
Plaintext
When called without the --cache option, pvscan lists PVs on the system,
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like
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.BR pvs (8)
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or
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.BR pvdisplay (8).
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.P
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When --cache is used, pvscan updates runtime lvm state on the system, or
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with -aay performs autoactivation.
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.P
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.B pvscan --cache
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.I device
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.P
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If device is present, lvm records that the PV on device is online.
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If device is not present, lvm removes the online record for the PV.
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pvscan only reads the named device.
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.P
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.B pvscan --cache
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.P
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Updates the runtime state for all lvm devices.
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.P
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.B pvscan --cache -aay
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.I device
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.P
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Performs the --cache steps for the device, then checks if the VG using the
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device is complete. If so, LVs in the VG are autoactivated, the same as
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vgchange -aay vgname would do. (A device name may be replaced with major
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and minor numbers.)
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.P
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.B pvscan --cache -aay
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.P
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Performs the --cache steps for all devices, then autoactivates any complete VGs.
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.P
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.B pvscan --cache --listvg|--listlvs
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.I device
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.P
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Performs the --cache steps for the device, then prints the name of the VG
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using the device, or the names of LVs using the device. --checkcomplete
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is usually included to check if all PVs for the VG or LVs are online.
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When this command is called by a udev rule, the output must conform to
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udev rule specifications (see --udevoutput.) The udev rule will use the
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results to perform autoactivation.
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.P
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Autoactivation of VGs or LVs can be enabled/disabled using vgchange or
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lvchange with --setautoactivation y|n, or by adding names to
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.BR lvm.conf (5)
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.B activation/auto_activation_volume_list
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.P
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See
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.BR lvmautoactivation (7)
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for more information about how pvscan is used for autoactivation.
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