Date: Mon, 13 Jul 2015 16:26:07 -0700 From: Freddie Cash <fjwcash@gmail.com> To: Chris Stankevitz <chris@stankevitz.com> Cc: FreeBSD Filesystems <freebsd-fs@freebsd.org> Subject: Re: Offline/online a drive from a mounted RW RAIDZx pool: resilver needed? Message-ID: <CAOjFWZ6vuxtCy01ro=oHKvZPpKi6BbaAhtWZk%2B6gDk9aPdTy%2Bw@mail.gmail.com> In-Reply-To: <55A4461F.6020308@stankevitz.com> References: <55A4461F.6020308@stankevitz.com>
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If you don't write anything to the pool, or at least, nothing gets written to that vdev, then there's On Jul 13, 2015 4:22 PM, "Chris Stankevitz" <chris@stankevitz.com> wrote: > > When I offline a drive from a RW RAIDZx pool and later bring it online, do > I have to endure a full resilver? > > If not, ZFS must keep track of history (sort of like subversion) so that > it can replay missing data. I believe the answer is "no" given my > experience today: > > 1. 11 drive pool healthy (~10 TB of data) > > 2. I (accidentally) pull a drive from hot-swap bay > > 3. pool degraded > > 4. 30 seconds later I reinsert the drive > > 5. pool still degraded (disk missing) > > 6. 300 seconds later I issue "zpool online /dev/daX" > > 7. A few seconds later, pool healthy again > > 8. I did not notice any resilvering > > Chris > _______________________________________________ > freebsd-fs@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" >
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