How to enable logs for LVM.

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cat /etc/lvm/lvm.conf


# Should we send log messages through syslog?
# 1 is yes; 0 is no.
syslog = 1

# Should we log error and debug messages to a file?
# By default there is no log file.
file = "/var/log/lvm2.log"

# Should we overwrite the log file each time the program is run?
# By default we append.
overwrite = 0

# What level of log messages should we send to the log file and/or syslog?
# There are 6 syslog-like log levels currently in use - 2 to 7 inclusive.
# 7 is the most verbose (LOG_DEBUG).
# level = 0
level = 7

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