mon force standby active
| Description: | If true monitors force standby-replay to be active. Set
under [mon] or [global]. |
|---|---|
| Type: | Boolean |
| Default: | true |
max mds
| Description: | The number of active MDS daemons during cluster creation. Set
under [mon] or [global]. |
|---|---|
| Type: | 32-bit Integer |
| Default: | 1 |
mds max file size
| Description: | The maximum allowed file size to set when creating a new file system. |
|---|---|
| Type: | 64-bit Integer Unsigned |
| Default: | 1ULL << 40 |
mds cache size
| Description: | The number of inodes to cache. |
|---|---|
| Type: | 32-bit Integer |
| Default: | 100000 |
mds cache mid
| Description: | The insertion point for new items in the cache LRU (from the top). |
|---|---|
| Type: | Float |
| Default: | 0.7 |
mds dir commit ratio
| Description: | The fraction of directory that is dirty before Ceph commits using a full update (instead of partial update). |
|---|---|
| Type: | Float |
| Default: | 0.5 |
mds dir max commit size
| Description: | The maximum size of a directory update before Ceph breaks it into smaller transactions) (MB). |
|---|---|
| Type: | 32-bit Integer |
| Default: | 90 |
mds decay halflife
| Description: | The half-life of MDS cache temperature. |
|---|---|
| Type: | Float |
| Default: | 5 |
mds beacon interval
| Description: | The frequency (in seconds) of beacon messages sent to the monitor. |
|---|---|
| Type: | Float |
| Default: | 4 |
mds beacon grace
| Description: | The interval without beacons before Ceph declares an MDS laggy (and possibly replace it). |
|---|---|
| Type: | Float |
| Default: | 15 |
mds blacklist interval
| Description: | The blacklist duration for failed MDSs in the OSD map. |
|---|---|
| Type: | Float |
| Default: | 24.0*60.0 |
mds session timeout
| Description: | The interval (in seconds) of client inactivity before Ceph times out capabilities and leases. |
|---|---|
| Type: | Float |
| Default: | 60 |
mds session autoclose
| Description: | The interval (in seconds) before Ceph closes a laggy client's session. |
|---|---|
| Type: | Float |
| Default: | 300 |
mds reconnect timeout
| Description: | The interval (in seconds) to wait for clients to reconnect during MDS restart. |
|---|---|
| Type: | Float |
| Default: | 45 |
mds tick interval
| Description: | How frequently the MDS performs internal periodic tasks. |
|---|---|
| Type: | Float |
| Default: | 5 |
mds dirstat min interval
| Description: | The minimum interval (in seconds) to try to avoid propagating recursive stats up the tree. |
|---|---|
| Type: | Float |
| Default: | 1 |
mds scatter nudge interval
| Description: | How quickly dirstat changes propagate up. |
|---|---|
| Type: | Float |
| Default: | 5 |
mds client prealloc inos
| Description: | The number of inode numbers to preallocate per client session. |
|---|---|
| Type: | 32-bit Integer |
| Default: | 1000 |
mds early reply
| Description: | Determines whether the MDS should allow clients to see request results before they commit to the journal. |
|---|---|
| Type: | Boolean |
| Default: | true |
mds use tmap
| Description: | Use trivialmap for directory updates. |
|---|---|
| Type: | Boolean |
| Default: | true |
mds default dir hash
| Description: | The function to use for hashing files across directory fragments. |
|---|---|
| Type: | 32-bit Integer |
| Default: | 2 (i.e., rjenkins) |
mds log
| Description: | Set to true if the MDS should journal metadata updates
(disabled for benchmarking only). |
|---|---|
| Type: | Boolean |
| Default: | true |
mds log skip corrupt events
| Description: | Determines whether the MDS should try to skip corrupt journal events during journal replay. |
|---|---|
| Type: | Boolean |
| Default: | false |
mds log max events
| Description: | The maximum events in the journal before we initiate trimming.
Set to -1 to disable limits. |
|---|---|
| Type: | 32-bit Integer |
| Default: | -1 |
mds log max segments
| Description: | The maximum number of segments (objects) in the journal before
we initiate trimming. Set to -1 to disable limits. |
|---|---|
| Type: | 32-bit Integer |
| Default: | 30 |
mds log max expiring
| Description: | The maximum number of segments to expire in parallels |
|---|---|
| Type: | 32-bit Integer |
| Default: | 20 |
mds log eopen size
| Description: | The maximum number of inodes in an EOpen event. |
|---|---|
| Type: | 32-bit Integer |
| Default: | 100 |
mds bal sample interval
| Description: | Determines how frequently to sample directory temperature (for fragmentation decisions). |
|---|---|
| Type: | Float |
| Default: | 3 |
mds bal replicate threshold
| Description: | The maximum temperature before Ceph attempts to replicate metadata to other nodes. |
|---|---|
| Type: | Float |
| Default: | 8000 |
mds bal unreplicate threshold
| Description: | The minimum temperature before Ceph stops replicating metadata to other nodes. |
|---|---|
| Type: | Float |
| Default: | 0 |
mds bal frag
| Description: | Determines whether the MDS will fragment directories. |
|---|---|
| Type: | Boolean |
| Default: | false |
mds bal split size
| Description: | The maximum directory size before the MDS will split a directory fragment into smaller bits. |
|---|---|
| Type: | 32-bit Integer |
| Default: | 10000 |
mds bal split rd
| Description: | The maximum directory read temperature before Ceph splits a directory fragment. |
|---|---|
| Type: | Float |
| Default: | 25000 |
mds bal split wr
| Description: | The maximum directory write temperature before Ceph splits a directory fragment. |
|---|---|
| Type: | Float |
| Default: | 10000 |
mds bal split bits
| Description: | The number of bits by which to split a directory fragment. |
|---|---|
| Type: | 32-bit Integer |
| Default: | 3 |
mds bal merge size
| Description: | The minimum directory size before Ceph tries to merge adjacent directory fragments. |
|---|---|
| Type: | 32-bit Integer |
| Default: | 50 |
mds bal merge rd
| Description: | The minimum read temperature before Ceph merges adjacent directory fragments. |
|---|---|
| Type: | Float |
| Default: | 1000 |
mds bal merge wr
| Description: | The minimum write temperature before Ceph merges adjacent directory fragments. |
|---|---|
| Type: | Float |
| Default: | 1000 |
mds bal interval
| Description: | The frequency (in seconds) of workload exchanges between MDSs. |
|---|---|
| Type: | 32-bit Integer |
| Default: | 10 |
mds bal fragment interval
| Description: | The frequency (in seconds) of adjusting directory fragmentation. |
|---|---|
| Type: | 32-bit Integer |
| Default: | 5 |
mds bal idle threshold
| Description: | The minimum temperature before Ceph migrates a subtree back to its parent. |
|---|---|
| Type: | Float |
| Default: | 0 |
mds bal max
| Description: | The number of iterations to run balancer before Ceph stops. (used for testing purposes only) |
|---|---|
| Type: | 32-bit Integer |
| Default: | -1 |
mds bal max until
| Description: | The number of seconds to run balancer before Ceph stops. (used for testing purposes only) |
|---|---|
| Type: | 32-bit Integer |
| Default: | -1 |
mds bal mode
| Description: | The method for calculating MDS load.
|
|---|---|
| Type: | 32-bit Integer |
| Default: |
|
mds bal min rebalance
| Description: | The minimum subtree temperature before Ceph migrates. |
|---|---|
| Type: | Float |
| Default: | 0.1 |
mds bal min start
| Description: | The minimum subtree temperature before Ceph searches a subtree. |
|---|---|
| Type: | Float |
| Default: | 0.2 |
mds bal need min
| Description: | The minimum fraction of target subtree size to accept. |
|---|---|
| Type: | Float |
| Default: | 0.8 |
mds bal need max
| Description: | The maximum fraction of target subtree size to accept. |
|---|---|
| Type: | Float |
| Default: | 1.2 |
mds bal midchunk
| Description: | Ceph will migrate any subtree that is larger than this fraction of the target subtree size. |
|---|---|
| Type: | Float |
| Default: | 0.3 |
mds bal minchunk
| Description: | Ceph will ignore any subtree that is smaller than this fraction of the target subtree size. |
|---|---|
| Type: | Float |
| Default: | 0.001 |
mds bal target removal min
| Description: | The minimum number of balancer iterations before Ceph removes an old MDS target from the MDS map. |
|---|---|
| Type: | 32-bit Integer |
| Default: | 5 |
mds bal target removal max
| Description: | The maximum number of balancer iteration before Ceph removes an old MDS target from the MDS map. |
|---|---|
| Type: | 32-bit Integer |
| Default: | 10 |
mds replay interval
| Description: | The journal poll interval when in standby-replay mode. ("hot standby") |
|---|---|
| Type: | Float |
| Default: | 1 |
mds shutdown check
| Description: | The interval for polling the cache during MDS shutdown. |
|---|---|
| Type: | 32-bit Integer |
| Default: | 0 |
mds thrash exports
| Description: | Ceph will randomly export subtrees between nodes (testing only). |
|---|---|
| Type: | 32-bit Integer |
| Default: | 0 |
mds thrash fragments
| Description: | Ceph will randomly fragment or merge directories. |
|---|---|
| Type: | 32-bit Integer |
| Default: | 0 |
mds dump cache on map
| Description: | Ceph will dump the MDS cache contents to a file on each MDSMap. |
|---|---|
| Type: | Boolean |
| Default: | false |
mds dump cache after rejoin
| Description: | Ceph will dump MDS cache contents to a file after rejoining the cache (during recovery). |
|---|---|
| Type: | Boolean |
| Default: | false |
mds verify scatter
| Description: | Ceph will assert that various scatter/gather invariants
are true (developers only). |
|---|---|
| Type: | Boolean |
| Default: | false |
mds debug scatterstat
| Description: | Ceph will assert that various recursive stat invariants
are true (for developers only). |
|---|---|
| Type: | Boolean |
| Default: | false |
mds debug frag
| Description: | Ceph will verify directory fragmentation invariants when convenient (developers only). |
|---|---|
| Type: | Boolean |
| Default: | false |
mds debug auth pins
| Description: | The debug auth pin invariants (for developers only). |
|---|---|
| Type: | Boolean |
| Default: | false |
mds debug subtrees
| Description: | The debug subtree invariants (for developers only). |
|---|---|
| Type: | Boolean |
| Default: | false |
mds kill mdstable at
| Description: | Ceph will inject MDS failure in MDSTable code (for developers only). |
|---|---|
| Type: | 32-bit Integer |
| Default: | 0 |
mds kill export at
| Description: | Ceph will inject MDS failure in the subtree export code (for developers only). |
|---|---|
| Type: | 32-bit Integer |
| Default: | 0 |
mds kill import at
| Description: | Ceph will inject MDS failure in the subtree import code (for developers only). |
|---|---|
| Type: | 32-bit Integer |
| Default: | 0 |
mds kill link at
| Description: | Ceph will inject MDS failure in hard link code (for developers only). |
|---|---|
| Type: | 32-bit Integer |
| Default: | 0 |
mds kill rename at
| Description: | Ceph will inject MDS failure in the rename code (for developers only). |
|---|---|
| Type: | 32-bit Integer |
| Default: | 0 |
mds wipe sessions
| Description: | Ceph will delete all client sessions on startup (for testing only). |
|---|---|
| Type: | Boolean |
| Default: | 0 |
mds wipe ino prealloc
| Description: | Ceph will delete ino preallocation metadata on startup (for testing only). |
|---|---|
| Type: | Boolean |
| Default: | 0 |
mds skip ino
| Description: | The number of inode numbers to skip on startup (for testing only). |
|---|---|
| Type: | 32-bit Integer |
| Default: | 0 |
mds standby for name
| Description: | An MDS daemon will standby for another MDS daemon of the name specified in this setting. |
|---|---|
| Type: | String |
| Default: | N/A |
mds standby for rank
| Description: | An MDS daemon will standby for an MDS daemon of this rank. |
|---|---|
| Type: | 32-bit Integer |
| Default: | -1 |
mds standby replay
| Description: | Determines whether a ceph-mds daemon should poll and replay
the log of an active MDS (hot standby). |
|---|---|
| Type: | Boolean |
| Default: | false |