![]() ![]() If a valid L2ARC header wasįound also display the properties of log entries in log blocks used for lll device Display every configuration, unique or not. If a valid L2ARC header wasįound also display the properties of log blocks used for restoring L2ARCĬontents (persistent L2ARC). ll device In addition display label space usage stats. Each unique configuration isĭisplayed only once. Number of L2ARC log blocks zdb -l will return 1. If there is an accounting error in the size or the The presence of L2ARC header is indicated by a specific sequence Valid label was found, 1 if error occurred, and 2 if no valid labels wereįound. label= device Read the vdev labels and L2ARC header from the specified device. The pool is not reverted to the checkpointed state. checkpointed-state Examine the checkpointed state of the pool. If specified multiple times, display counts of each intent log intent-logs Display information about intent log (ZIL) entries relating to eachĭataset. history Display pool history similar to zpool history, but include internal changes, embedded-block-pointer= word0: word1:…: word15 Decode and display block from an embedded block pointer specified by the DDDDD Also dump the contents of the deduplication tables describing unique DDDD Dump the contents of the deduplication tables describing duplicateīlocks. DDD Display the statistics independently for each deduplication table. Pool) block counts and sizes by reference count. (physically present on disk) and referenced (logically referenced in the DD Display a histogram of deduplication statistics, showing the allocated Inflation due to the zfs copies property ( copies), andĪn overall effective ratio ( dedup × compress / copies). dedup-stats Display deduplication statistics, including the deduplication ratio Range 0:-1:A-d will dump all object types except for directories.Ī Dump all objects (this is the default) d Dump ZFS directory objects f Dump ZFS plain file objects m Dump SPA space map objects z Dump ZAP objects - Negate the effect of next flag -D, (-) negates the effect of the flag that follows it and has no effect Specifies a set of flags, described below, that control which object An end value of -1 specifies a range with Integer object identifiers that denote the upper and lower bounds of the Information about those specific objects or ranges only.Īn object ID range is specified in terms of a colon-separated If object IDs or object ID ranges are specified, display If specified multiple times provides greater and greater (dataset name) or a number (objset ID) when datasets have numeric names. Information: ID, create transaction, size, and object count. ![]() datasets Display information about datasets. The configuration that would be used were the pool to be imported. Specified multiple times with -e also display If specified multiple times, and a pool name is also specifiedĭisplay both the cached configuration and the on-disk configuration. Options, instead display information about the cache file config Display information about the configuration. If specified multiple times, verify the checksums of all checksum Verify the checksum of all metadata blocks while printing block statistics block-stats Display statistics regarding the number, size (logical, physical andĪllocated) and deduplication of blocks. Though unlikely, that zdb may interpret inconsistent pool data and behave When operating on an imported and active pool it is possible, Most invocations is not documented, a knowledge of ZFS internals is Structure of a ZFS pool, and is inherently unstable. The output of this command in general reflects the on-disk ![]() It is a not a general purpose tool and options (and facilities) The zdb utility displays information aboutĪ ZFS pool useful for debugging and performs some amount of consistencyĬhecking. Storage pool debugging and consistency information SYNOPSIS zdb ![]()
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