Gluster - Bugs: bug #17353, location hint to be integrated to...

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bug #17353: location hint to be integrated to unify

Submitter:	Anand Avati <avati>
Submitted:	Mon 07 Aug 2006 12:08:27 PM UTC


Category:	GlusterFS	Severity:	5 - Blocker
Priority:	5 - Normal	Item Group:	Redesign
Status:	Invalid	Privacy:	Public
Assigned to:	avati	Originator Name: *
Open/Closed:	Closed	Release:
Operating System:	GNU/Linux	Reproducibility:	None

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Fri 11 Aug 2006 08:34:52 PM UTC, comment #1:

``dircache'' renamed to ``location hints'', module committed.

Vikas Gorur <vikasgp>

Mon 07 Aug 2006 12:08:27 PM UTC, original submission:

a library for storing dir entries using two dimensional data strucutre, hash table in one dimension fo'yr operations and a linked list in another dimension for maintainence (allocation/free/ageing) is needed to implement xlators like unionfs, ALU, Raid-0.

the library gives a lookup (via hash table) from filename to file-layout (pointer to which child xlator has the file). Every lookup on an entry makes the entry 'younger'. Entries are pre-allocated and 'oldest' entry is salvaged for new entry request.

cache coherancy can be easily handled by invalidating the cached entry when a cache-miss is encountered and rebuilding the entry.

implementing a simple geneirc hash table api into libglusterfs is needed as part of implementing the dircache

Anand Avati <avati>

(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

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Depends on the following items: None found

Items that depend on this one

XLATOR - AdaptiveLU (bug #17283, Fixed)

XLATOR - Raid0 (bug #17301, Invalid)

XLATOR - Raid1 (bug #17309, Fixed)

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bug dependencies.

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Follow 9 latest changes.

Date	Changed by	Updated Field	Previous Value	Replaced by
2007-05-06	avati	Status	None	Invalid
		Open/Closed	Open	Closed
2006-09-14	avati	Open/Closed	Closed	Open
2006-09-14	avati	Assigned to	vikasgp	avati
		Summary	fast-dircache for quick lookups	location hint to be integrated to unify
2006-09-08	vikasgp	Open/Closed	Open	Closed
2006-08-07	avati	Dependencies	-	bugs #17283 is dependent
2006-08-07	avati	Dependencies	-	bugs #17309 is dependent
2006-08-07	avati	Dependencies	-	bugs #17301 is dependent

Gluster - Bugs: bug #17353, location hint to be integrated to...

bug #17353: location hint to be integrated to unify

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