Date: Fri, 9 Jun 2017 16:51:13 -0700 From: Xin LI <delphij@gmail.com> To: Tim Gustafson <tjg@ucsc.edu> Cc: freebsd-fs <freebsd-fs@freebsd.org> Subject: Re: ZFS Commands In "D" State Message-ID: <CAGMYy3v=YngG4ZqoDh9SGkTU7hj8xdJP1268Q5aGboo1gj=RFw@mail.gmail.com> In-Reply-To: <CAPyBAS6LjFOxfi0hnJ3E8d6U3ODJtYAub8rKZnNL%2BQViFvVHLQ@mail.gmail.com> References: <CAPyBAS6Du=059Pef=wUC9D61mUEd%2BJXBxt6ydAdjypVYJptnvQ@mail.gmail.com> <CAGMYy3vUsfzTYknt8yENzP8xqR0V4wkNfSDmtuS65U=yL1trzQ@mail.gmail.com> <CAPyBAS44c=jb5AJprWSYHSHje0oBLAcoCqJKZNsrA%2BWuh4=9WA@mail.gmail.com> <CAPyBAS7PmwTLjp4KPj1%2BcS4N1pUojVyrbB=p3a_O=7NHai5CEA@mail.gmail.com> <CAPyBAS6LjFOxfi0hnJ3E8d6U3ODJtYAub8rKZnNL%2BQViFvVHLQ@mail.gmail.com>
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Yes, you can observe the progress with:
dtrace -qn 'zfs-dbgmsg{printf("%s\n", stringof(arg0))}'
.
I'm not 100% sure if that would be helpful for diagnosing your issue,
though. What's the FreeBSD release? Maybe you have a lot of memory
fragments? ( bugs.freebsd.org/194513 may be related?)
On Fri, Jun 9, 2017 at 8:46 AM, Tim Gustafson <tjg@ucsc.edu> wrote:
> I wanted to follow up with some new status on this.
>
> So, the zpool scrub is going still, but it's going *very* slowly:
>
> pool: backup
> state: ONLINE
> scan: scrub in progress since Thu Jun 8 15:15:59 2017
> 644G scanned out of 103T at 10.5M/s, (scan is slow, no estimated time)
> 0 repaired, 0.61% done
>
> I started another zfs send/receive before I left yesterday, and it did
> complete successfully. I'm re-running last night's transfer again (it
> failed because the one I started before I left yesterday was still
> going), and it seems to be going at a reasonable rate of speed. So,
> I'm really not sure what is happening here. I'm still concerned that
> the zpool scrub is going so slowly. Usually we can scrub that amount
> of data in 3-4 days; at this rate, it will probably take a month or
> two.
>
> Since there isn't a userland process for the scrub, is there another
> way I can procstat that process to see what it's doing?
>
> --
>
> Tim Gustafson
> BSOE Computing Director
> tjg@ucsc.edu
> 831-459-5354
> Baskin Engineering, Room 313A
>
> To request BSOE IT support, please visit https://support.soe.ucsc.edu/
> or send e-mail to help@soe.ucsc.edu.
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