Date: Thu, 16 Feb 2017 13:33:43 -0800 From: Freddie Cash <fjwcash@gmail.com> To: Xin LI <delphij@gmail.com> Cc: FreeBSD Filesystems <freebsd-fs@freebsd.org> Subject: Re: Check status of background destroy Message-ID: <CAOjFWZ43x5rz2ynULBJnU4Uxv3S29z=RmFCRj4g2NHWEsc%2B%2Bxg@mail.gmail.com> In-Reply-To: <CAOjFWZ7ii9Pes2x8yKytdgnde1dNv5OQ6EM2rWATYL1KwC=Ujg@mail.gmail.com> References: <CAOjFWZ4S42mebL15iT8=TLcfvabBWeUdLDzi_d3WfhKTpuGdOw@mail.gmail.com> <CAGMYy3uU6bUfjufXFQXbNT2krnRnOj-YC2069ep_2tNjDJuw4A@mail.gmail.com> <CAOjFWZ7ii9Pes2x8yKytdgnde1dNv5OQ6EM2rWATYL1KwC=Ujg@mail.gmail.com>
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On Fri, Jan 6, 2017 at 9:03 AM, Freddie Cash <fjwcash@gmail.com> wrote: > On Wed, Jan 4, 2017 at 10:43 AM, Xin LI <delphij@gmail.com> wrote: > >> Try setting vfs.zfs.free_max_blocks to 100000 (this is an arbitrary >> number, can be larger, limits maximum blocks being freed per txg; see >> https://svnweb.freebsd.org/base?view=3Drevision&revision=3D271532 for >> details). >> >> You can inspect the progress with DTrace by looking at zfs-dbgmsg. >> > > =E2=80=8BThis is looking promising. > > Booting off an 11.0-based mfsBSD didn't work (locked up after "Trying to > mount root from /dev/md0"). > > Booting off a 10.3-based mfsBSD worked. Set that sysctl, then imported > the pool without issues. The box has now been running for just over 24 > hours. > > ARC is sitting at 93 GB, with Wired at 116 GB. Previously, the ARC would > only be around 10 GB with Wired over 120 GB. "zpool iostat" shows lots o= f > reads and writes happening to the pool. And the Avail space is slowly > ticking upwards. > > Now just need to wait and see how long it takes to free up all 40 TB of > referenced space. :) > > Thanks for the info! > > =E2=80=8BJust to close out this thread, the 11.0-based mfsBSD LiveCD work= ed to allow the background destroy to complete successfully. Afterward, I was able to import the storage pool back into the 10.3 install running off the root pool.=E2=80=8B This server is back online and running normally. Thanks for all the help and pointers everyone! --=20 Freddie Cash fjwcash@gmail.com
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