Date: Thu, 16 Oct 2014 09:50:48 +0100 From: "Steven Hartland" <killing@multiplay.co.uk> To: "Marcus Reid" <marcus@blazingdot.com> Cc: Mark Martinec <Mark.Martinec+freebsd@ijs.si>, freebsd-fs@freebsd.org, freebsd-stable@freebsd.org Subject: Re: zpool import hangs when out of space - Was: zfs pool import hangs on [tx->tx_sync_done_cv] Message-ID: <2307495EDFE14A4FB34374307B3EBC55@multiplay.co.uk> References: <14ADE02801754E028D9A0EAB4A16527E@multiplay.co.uk> <543C3C47.4010208@ijs.si> <E3C3C359999140B48943A0E1A04F83A9@multiplay.co.uk> <CAHM0Q_O7LNBiQAEjygANa%2B0rqm9cywjTPbNXabB4TePfEHAZsA@mail.gmail.com> <A7771879317F4194A1D5E4921CD33593@multiplay.co.uk> <138CF459AA0B41EB8CB4E11B3DE932CF@multiplay.co.uk> <543D0953.1070604@ijs.si> <C7A0928FD72346DD95970145BD2ADC8B@multiplay.co.uk> <8F4036C658724468B34B20CCBA658E43@multiplay.co.uk> <520ED11771DE40FBAEFCC066D2FF0441@multiplay.co.uk> <20141016075518.GA14459@blazingdot.com>
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----- Original Message ----- From: "Marcus Reid" <marcus@blazingdot.com> > On Thu, Oct 16, 2014 at 03:56:23AM +0100, Steven Hartland wrote: >> Fix for this has now been committed: >> https://svnweb.freebsd.org/changeset/base/273158 >> >> I'm already talking with re@ to get this in to the 10.1 release. > > Thank you for that. I looked at your thread on the illumos zfs list, > and from what I gather, if you aren't wedged into a state where you have > to import read-only, you don't have to worry about leaked data in your > pool, correct? > > I always have a small number of 'deferred free' blocks that's always > somewhere between 8 and 10: > > 9 108K 15.5K 108K 12.0K 6.97 0.00 deferred free > > Also, if you run 'zdb -bb <pool>' on a live pool, you can get a bunch > of: > > leaked space: vdev 0, offset 0x16464c2000, size 1048576 > ... > > and then: > > block traversal size 14586265600 != alloc 14667571200 (leaked 81305600) > > which I believe is normal and unrelated. Yep thats normal. Regards Steve
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