NAME
mdb_stat − LMDB environment status tool
SYNOPSIS
mdb_stat
[−V]
[−e]
[−f[f[f]]]
[−n]
[−v]
[−m module
[−w password]]
[−L]
[−r[r]]
[−a |
−s subdb]
envpath
DESCRIPTION
The
mdb_stat
utility displays the status of an LMDB environment.
OPTIONS
-
−V
-
Write the library version number to the standard output, and exit.
-
−e
-
Display information about the database environment.
-
−f
-
Display information about the environment freelist.
If −ff is given, summarize each freelist entry.
If −fff is given, display the full list of page IDs in the freelist.
-
−n
-
Display the status of an LMDB environment which does not use subdirectories.
-
−v
-
Use the previous environment state instead of the latest state.
This may be useful if the latest state has been corrupted.
-
−m module
-
Load the specified dynamic module to utilize cryptographic functions.
This is required to operate on environments that have been configured
with page-level checksums or encryption.
-
−w password
-
Specify the password for an encrypted environment. This is only
used if a cryptography module has been loaded.
-
−L
-
Access the LMDB environment without any locking. If concurrent
access is anticipated, the caller must manage all concurrency itself.
-
−r
-
Display information about the environment reader table.
Shows the process ID, thread ID, and transaction ID for each active
reader slot. The process ID and transaction ID are in decimal, the
thread ID is in hexadecimal. The transaction ID is displayed as "-"
if the reader does not currently have a read transaction open.
If −rr is given, check for stale entries in the reader
table and clear them. The reader table will be printed again
after the check is performed.
-
−a
-
Display the status of all of the subdatabases in the environment.
-
−s subdb
-
Display the status of a specific subdatabase.
DIAGNOSTICS
Exit status is zero if no errors occur.
Errors result in a non-zero exit status and
a diagnostic message being written to standard error.
SEE ALSO
AUTHOR |