Re: Good SAS adapters for 6 Gb/s SATA SSD's (with TRIM)?

Mark Lord
2011-08-12T12:32:04Z

On 11-08-12 05:52 AM, Lukas Czerner wrote:
..
> wiper.sh is just a hack to do rally nasty thing to the filesystam
> (allocating all free space)

It actually does NOT allocate all of the free space,
but yes it does reserve *most* of it, leaving a few percent
or a few hundred MB free while it issues the DSM/TRIM commands.

And it uses the fallocate system call, so the reserved space
is not actually written to when reserved, nor when later freed.

I expect the next version of it to include support for FSTRIM,
but that is a much slower method, especially for offline TRIM.

Cheers
--
Mark Lord
Real-Time Remedies Inc.
mlord@pobox.com