Re: SSDs in RAID and bio(4)

2013-10-19 Thread Stuart Henderson
On 2013-10-19, Chris Cappuccio wrote: > (although if I'm reading right, some modern SSDs use tricks to minimize the > need for TRIM?) If they can do that, they'd have to understand the filesystem. Seems like a bit too much magic to have on the ssd controller..

Re: SSDs in RAID and bio(4)

2013-10-19 Thread Juan Francisco Cantero Hurtado
On Fri, Oct 18, 2013 at 09:04:55PM -0700, Chris Cappuccio wrote: > Darren Spruell [phatbuck...@gmail.com] wrote: > > I don't have a great deal of experience with SSD disks but was spec'ing > > some systems to use them. We'd be doing RAID on the hosts and I'd prefer > > to have something supported b

Re: SSDs in RAID and bio(4)

2013-10-18 Thread Chris Cappuccio
Darren Spruell [phatbuck...@gmail.com] wrote: > I don't have a great deal of experience with SSD disks but was spec'ing > some systems to use them. We'd be doing RAID on the hosts and I'd prefer > to have something supported by bio(4) for volume management. Do SSDs > have any impact on ability to d

SSDs in RAID and bio(4)

2013-10-17 Thread Darren Spruell
I don't have a great deal of experience with SSD disks but was spec'ing some systems to use them. We'd be doing RAID on the hosts and I'd prefer to have something supported by bio(4) for volume management. Do SSDs have any impact on ability to do this? Or can one use the same HW RAID controllers fo