Re: Problems adding Intel 750 to zfs pool

Be aware that kern.geom.dev.delete_max_sectors will still come into play here hence the large request will still get chunked. This is good to prevent excessively long running individual BIO's which would result in user operations being uncancelable. Regards Steve On 21/07/2015 22:29,

Re: Problems adding Intel 750 to zfs pool

Jim Harris 22 July 2015 6:54 am Hi Dylan, I just committed SVN r285767 which should fix this issue. I will request MFC to stable/10 after the 3 day waiting period. Thanks, -Jim Love your work, Jim! Thank you. __

Re: Problems adding Intel 750 to zfs pool

On Fri, Jul 17, 2015 at 9:35 PM, dy...@techtangents.com < dy...@techtangents.com> wrote: > Hi, > > I've installed an Intel 750 400GB NVMe PCIe SSD in a Dell R320 running > FreeBSD 10.2-beta-1... not STABLE, but not far behind, I think. Apologies > if this is the wrong mailing list, or if this has

Re: Problems adding Intel 750 to zfs pool

Those figures are often inaccurate as the actual results can vary wildly based of if the device FW thinks there is actual data on the sectors being TRIM'ed. Regards Steve On 20/07/2015 12:06, Will Green wrote: I wonder if this is connected to NVMe? Our SATA Intel DC S3500 drives (whi

Re: Problems adding Intel 750 to zfs pool

I wonder if this is connected to NVMe? Our SATA Intel DC S3500 drives (which are not that different to the 750s) TRIM much more quickly. What does camcontrol think the secure erase time should be? For a 600GB S3500 camcontrol accurately gives the secure erase time as 4 minutes: # camcontrol se

Re: Problems adding Intel 750 to zfs pool

This will almost certainly be due to slow TRIM support on the device. Try setting the sysctl vfs.zfs.vdev.trim_on_init to 0 before adding the devices. On 18/07/2015 05:35, dy...@techtangents.com wrote: Hi, I've installed an Intel 750 400GB NVMe PCIe SSD in a Dell R320 running FreeBSD 10.2-b

Re: Problems adding Intel 750 to zfs pool

I found this: https://lists.freebsd.org/pipermail/freebsd-fs/2015-February/020828.html Seems to be related to vfs.zfs.vdev.trim_on_init - I turn this off and it adds immediately. dy...@techtangents.com 18 July 2015 2:35 pm Hi, I've installed an Intel 750 400G

Problems adding Intel 750 to zfs pool

Hi, I've installed an Intel 750 400GB NVMe PCIe SSD in a Dell R320 running FreeBSD 10.2-beta-1... not STABLE, but not far behind, I think. Apologies if this is the wrong mailing list, or if this has been fixed in STABLE since the beta. Anyway, I've gparted it into 2 partitions - 16GB for slo