Hi Mike, thanks for the insight. I tried both, but not at the same time. When I found that the ZFS was corrupting the filesystem, I reinstalled the FreeBSD using UFS but no luck. Ulf told me that he had the same problem and it turned out the problem was a defective RAM, but here I just ran the test 2 times, one from Dell BIOS Diagnostics Tool and other from mdsched.exe from Windos 10, but here the RAM is ok... Thank you again, Mario Em seg., 24 de fev. de 2020 ?s 22:15, Mike Karels <mike at karels.net> escreveu:> Mario, have you ruled out the possibility that the UFS and ZFS filesystems > are overlapping? It would be worth a careful check of the partition table > and filesystem sizes. You can check the actual UFS size with dumpfs. > I ask in part because UFS has a tendency to write to the last cylinder > group. > > Also, are you sure you want to use both UFS and ZFS? I do it personally > for historical reasons, but on a larger machine with several disks. But > there are reasons not to use both, including different memory cache > strategies. > > Mike >
Hi,> On 25 Feb 2020, at 01:35, Mario Olofo <mario.olofo at gmail.com> wrote: > > Hi Mike, thanks for the insight. > > I tried both, but not at the same time. > When I found that the ZFS was corrupting the filesystem, I reinstalled the > FreeBSD using UFS but no luck. > Ulf told me that he had the same problem and it turned out the problem was > a defective RAM, but here I just ran the test 2 times, > one from Dell BIOS Diagnostics Tool and other from mdsched.exe from Windos > 10, but here the RAM is ok?Software tests will not always find marginally faulty RAM. If you can, try swapping for known good RAM; or if you have lots of RAM installed, try taking half the RAM out at a time and see if that affects stability.> Thank you again, > > Mario > > Em seg., 24 de fev. de 2020 ?s 22:15, Mike Karels <mike at karels.net> > escreveu: > [etc]-- Bob Bishop rb at gid.co.uk
I have had disks, that work ?perfectly" under UFS and various RAID controllers (and DOS and Windows), but always reported checksum errors when running under ZFS. It would happen on any motherboard or controller. That made me never use anything but ZFS on data that I cannot recreate 100%, fast? but that is separate story. I labeled those disks bad and they sit in my ?museum?. Needless to say some were brand new. Not saying you have this issue, but sharing anecdotal evidence. But I wonder how you discovered you had corruption with UFS? What is observed? It might well be, that FreeBSD is more agressive with your motherboard/chipset or does not implement known quirk of that ? which might trigger some edge cases for the SSD. Ultimately, if you can move that SSD to another motherboard and test it, it would confirm where the issue is. Daniel> On 25 Feb 2020, at 3:35, Mario Olofo <mario.olofo at gmail.com> wrote: > > Hi Mike, thanks for the insight. > > I tried both, but not at the same time. > When I found that the ZFS was corrupting the filesystem, I reinstalled the > FreeBSD using UFS but no luck. > Ulf told me that he had the same problem and it turned out the problem was > a defective RAM, but here I just ran the test 2 times, > one from Dell BIOS Diagnostics Tool and other from mdsched.exe from Windos > 10, but here the RAM is ok... > > Thank you again, > > Mario >