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vdoreadonly - Man Page

puts a VDO device into read-only mode

Synopsis

vdoreadonly filename

Description

vdoreadonly forces an existing VDO device into read-only mode.

filename must be the path of the VDODataLV as described in lvmvdo(7). Since lvchange(8) will only mount that as read-only, a writable version of that device must be manually created, as shown in the example below.

Options

--help

Print this help message and exit.

--version

Show the version of vdoreadonly.

Example

# lvchange -ay vdo1/vdo0pool_vdata
# dmsetup table vdo1-vdo0pool_vdata > vdata.table
# lvchange -an vdo1/vdo0pool_vdata
# dmsetup create vdo1-vdo0pool_vdata --table "`cat vdata.table`"
# vdoreadonly /dev/mapper/vdo1-vdo0pool_vdata
# dmsetup remove vdo1-vdo0pool_vdata

See Also

lvmvdo(7), lvchange(8), dmsetup(8)

Info

2023-04-14 Red Hat