dbd (1)
Leading comments
Title: dbd Author: [FIXME: author] [see http://docbook.sf.net/el/author] Generator: DocBook XSL Stylesheets v1.75.2 <http://docbook.sf.net/> Date: 12 Oct 2010 Manual: Netatalk 2.2 Source: Netatalk 2.2 Language: English
NAME
dbd - CNID database maintenanceSYNOPSIS
- dbd [-evx] {-d [-i] | -s [-c|-n] | -r [-c|-f] | -u} volumepath
DESCRIPTION
dbd
COMMANDS
-d
- Dump CNID database. With -i dump indexes too.
-s
-
Scan volume:
- * Compare CNIDs in database with volume
- * Test if .AppleDouble directories exist
- * Test if AppleDouble files exist
- * Report orphaned AppleDouble files
- * Report directories inside .AppleDouble directories
- * Check name encoding by roundtripping, log on error
- * Check for orphaned CNIDs in database (requires -e)
- * Open and close adouble files
-
Options:
- -c Don't check .AppleDouble stuff, only check orphaned. -n Don't open CNID database, skip CNID checks, only traverse filesystem
-r
-
Rebuild volume. With
-f
wipe database and rebuild from CNIIDs stored in AppleDouble files.
- * Sync CNIDSs from database with volume
- * Ensure .AppleDouble directories exist
- * Ensure AppleDouble files exist
- * Delete orphaned AppleDouble files
- * Report directories inside .AppleDouble directories
- * Check name encoding by roundtripping, log on error
- * Delete orphaned CNIDs in database (requires -e)
- * Open and close adouble files
-
Options:
-
-c
Don't create .AppleDouble stuff, only cleanup orphaned.
-f Wipe database and rebuild from IDs stored in AppleDouble files, only available for volumes without nocnidcache option. Implies -e.
-
-c
Don't create .AppleDouble stuff, only cleanup orphaned.
-u
-
Upgrade:
Opens the database which triggers any necessary upgrades, then closes and exits.
OPTIONS
-e
- Only work on inactive volumes and lock them (exclusive)
-x
- Rebuild indexes (just for completeness, mostly useless!)
-v
- verbose
WARNING
In order to be able to run -rf reconstructing the CNIDs in the database from the AppleDouble files, make sure you've run a -r rebuild sometimes before, where the CNIDs then would have been synched between database and AppleDouble files.
Also be careful about the option nocnidcache. Avoid this option if at all possible, because if prevents you from being able to use -f.
CNID BACKGROUND
The CNID backends maintains name to ID mappings. If you change a filename outside afpd(8) (shell, samba), the CNID db will not know and not reflect that change. Netatalk tries to recover from such inconsistencies as gracefully as possible. The mechanisms to resolve such inconsistencies may fail sometimes, though, as this is not an easy task to accomplish. E.g. if several names in the path to the file or directory have changed, things may go wrong.
If you change a lot of filenames at once, chances are higher that the afpds fallback mechanisms fail, i.e. files will be assigned new IDs, even though the file hasn't changed.