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MDBX_CHK(1) General Commands Manual MDBX_CHK(1) NAME mdbx_chk - MDBX checking tool SYNOPSIS mdbx_chk [-V] [-v[v[v]]] [-n] [-q] [-c] [-w] [-d] [-i] [-s table] dbpath DESCRIPTION The mdbx_chk utility is intended to check an MDBX database file. OPTIONS -V Write the library version number to the standard output, and exit. -v Produce verbose output, including summarize space and page usage statistics. If -vv is given, be more verbose, show summarized B- tree info and space allocation. If -vvv is given, be more verbose, include summarized statistics of leaf B-tree pages. If -vvvv is given, be even more verbose, show info of each page during B-tree traversal and basic info of each GC record. If -vvvvv is given, turn maximal verbosity, display the full list of page IDs in the GC records and size of each key-value pair of database(s). -q Be quiet; do not output anything even if an error was detected. -c Force using cooperative mode while opening environment, i.e. don't try to open in exclusive/monopolistic mode. Only exclusive/monopo- listic mode allow complete check, including full check of all meta- pages and actual size of database file. -w Open environment in read-write mode and lock for writing while checking. This could be impossible if environment already used by another process(s) in an incompatible read-write mode. This allows rollback to last steady commit (in case environment was not closed properly) and then check transaction IDs of meta-pages. Otherwise, without -w option environment will be opened in read-only mode. -d Disable page-by-page traversal of B-tree. In this case, without B- tree traversal, it is unable to check for lost-unused pages nor for double-used pages. -i Ignore wrong order errors, which will likely false-positive if cus- tom comparator(s) was used. -s table Verify and show info only for a specific table. -0|-1|-2 Using specific meta-page 0, or 2 for checking. -t Turn to a specified meta-page on successful check. -T Turn to a specified meta-page EVEN ON UNSUCCESSFUL CHECK! -u Warms up the DB before checking via notifying OS kernel of subse- quent access to the database pages. -U Warms up the DB before checking, notifying the OS kernel of subse- quent access to the database pages, then forcibly loads ones by se- quential access and tries to lock database pages in memory. -n Open MDBX environment(s) which do not use subdirectories. This is a legacy option. For now MDBX handles this automatically. 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 if no quiet mode was requested. SEE ALSO mdbx_stat(1), mdbx_copy(1), mdbx_dump(1), mdbx_load(1) mdbx_drop(1) AUTHOR Leonid Yuriev <https://gitflic.ru/user/erthink> MDBX 0.13 2024-08-29 MDBX_CHK(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | DIAGNOSTICS | SEE ALSO | AUTHOR
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