fdb wipe

Deletes FDB databases and the data therein contained. Uses the passed request to identify the database to delete.

This is equivalent to a UNIX rm command.

It expects a minimum set of keys to be set, but it can be overridden with the option –minimum-keys.

This tool deletes either whole databases, or whole indexes within databases

Usage

fdb wipe request1 [request2] ...

fdb wipe --doit request1 [request2] ...

Options

--doit

Actually delete the files.

--porcelain

Print only a list of files to be deleted / that are deleted

--ignore-errors

Ignore errors (report them as warnings) and continue processing wherever possible.

--ignore-no-data

Do not return error if there is no data to delete.

--raw
Don’t apply (contextual) expansion and checking on requests.
Keys and values passed must match those used internally to the FDB exactly.
This prevents the use of named parameters (such as t rather than param=130), dates (such as date=-1), or similar.

--minimum-keys=string,string
Default is class,expver,stream,date,time
Define the minimum set of keys that must be specified. This is a safety precaution against accidental data removal

--all

(Debug and testing only) Visit all FDB databases

Example 1

List data for deletion according to a specified key

% fdb wipe class=rd,expver=wxyz,stream=oper,date=20151004,time=1200

Wiping for request
retrieve,
  class=rd,
  expver=wxyz,
  stream=oper,
  date=20151004,
  time=1200

FDB owner: <id>

Metadata files to delete:
  /data/fdb5/rd:wxyz:oper:20151004:1200:g/toc    /data/fdb5/rd:wxyz:oper:20151004:1200:g/schema
Data files to delete:
  /data/fdb5/rd:wxyz:oper:20151004:1200:g/an:pl.20170323.164359.host.30249454665731.data

Index files to be deleted:
  /data/fdb5/rd:wxyz:oper:20151004:1200:g/an:pl.20170323.164359.host.30249454665730.index

Other files:
  - NONE -

...

Rerun command with --doit flag to delete unused files

Example 2

And actually delete the data listed in example 1

% fdb wipe --doit class=rd,expver=wxyz,stream=oper,date=20151004,time=1200

Wiping for request
retrieve,
  class=rd,
  expver=wxyz,
  stream=oper,
  date=20151004,
  time=1200

FDB owner: <id>

Metadata files to delete:
  /data/fdb5/rd:wxyz:oper:20151004:1200:g/toc    /data/fdb5/rd:wxyz:oper:20151004:1200:g/schema
Data files to delete:
  /data/fdb5/rd:wxyz:oper:20151004:1200:g/an:pl.20170323.164359.host.30249454665731.data

Index files to be deleted:
  /data/fdb5/rd:wxyz:oper:20151004:1200:g/an:pl.20170323.164359.host.30249454665730.index

Other files:
  - NONE -

...


Unlink /data/fdb5/rd:wxyz:oper:20151004:1200:g/toc
Unlink /data/fdb5/rd:wxyz:oper:20151004:1200:g/schema
Unlink /data/fdb5/rd:wxyz:oper:20151004:1200:g/an:pl.20170323.164359.host.30249454665731.data
Unlink /data/fdb5/rd:wxyz:oper:20151004:1200:g/an:pl.20170323.164359.host.30249454665730.index
...

Example 3

The same example as before, but specifying a smaller sub-set of keys:

Use –minimum-keys with caution! Setting –minimum-keys=class is a BAD IDEA! You risk deleting the whole FDB.

% fdb wipe --doit --minimum-keys=class,expver class=rd,expver=wxyz

Wiping for request
retrieve,
  class=rd,
  expver=wxyz

FDB owner: <id>

Metadata files to delete:
  /data/fdb5/rd:wxyz:oper:20151004:1200:g/toc    /data/fdb5/rd:wxyz:oper:20151004:1200:g/schema
Data files to delete:
  /data/fdb5/rd:wxyz:oper:20151004:1200:g/an:pl.20170323.164359.host.30249454665731.data

Index files to be deleted:
  /data/fdb5/rd:wxyz:oper:20151004:1200:g/an:pl.20170323.164359.host.30249454665730.index

Other files:
  - NONE -

...

Unlink /data/fdb5/rd:wxyz:oper:20151004:1200:g/toc
Unlink /data/fdb5/rd:wxyz:oper:20151004:1200:g/schema
Unlink /data/fdb5/rd:wxyz:oper:20151004:1200:g/an:pl.20170323.164359.host.30249454665731.data
Unlink /data/fdb5/rd:wxyz:oper:20151004:1200:g/an:pl.20170323.164359.host.30249454665730.index