git repo?

[lu...@dashjr.org]

One more thing, I forgot to ask in my initial email: Is there an official git (or other SCM) repository for lessfs somewhere, in case I need to improve on it (and submit such patches upstream)?

[Tilman Vogel]

A related question: Why is nobody using lessfs as it seems? Is everybody just waiting for btrfs inline deduplication?

[Luke Dashjr]

On Saturday, October 17, 2015 9:42:58 PM Tilman Vogel wrote:
> A related question: Why is nobody using lessfs as it seems? Is everybody
> just waiting for btrfs inline deduplication?

In my case, it's because lessfs doesn't support storing complete backups
(xattrs, for example) and was simply way too slow (I couldn't even finish a
single complete mirror of my system).

It also stores everything in a single file (IIRC) and/or can't be
incrementally backed-up, so it isn't viable for remote backup either.

Luke

[Tilman Vogel]

Am Samstag, 17. Oktober 2015 23:57:04 UTC+2 schrieb Luke Dashjr:

In my case, it's because lessfs doesn't support storing complete backups
(xattrs, for example) and was simply way too slow (I couldn't even finish a
single complete mirror of my system).

It also stores everything in a single file (IIRC) and/or can't be
incrementally backed-up, so it isn't viable for remote backup either.

The recent releases support "chunk_io" which stores the block data in individual files. That should make it much easier to do incremental backups of the data store.
I only played with about 3 GB of data on it, though, so cannot say much about performance yet.

Regards,

Tilman

[Mark Ruijter]

Lessfs is and was never intended to be a general purpose filesystem. It was designed for image based backup purposes.

It can give very decent sequential read/write performance. Up to 700 MB/sec.  However to scale it requires an SSD to hold the bdb databases. Plenty of memory helps a lot as well. As does a powerful processor with many cores.

ZFS needs the same thing when used with deduplication. As will btrfs would it ever support inline dedupe.

Thanks,

Mark

Verstuurd vanaf mijn iPhone

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