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Subject: Re: Panic on BETA1 in the ZFS subsystem
To: Karl Denninger <karl@denninger.net>, freebsd-stable@FreeBSD.org
References: <8f44bc09-1237-44d0-fe7a-7eb9cf4fe85b@denninger.net>
 <54e5974c-312e-c33c-ab83-9e1148618ddc@FreeBSD.org>
 <97cf5283-683b-83fd-c484-18c14973b065@denninger.net>
Cc: killing@multiplay.co.uk
From: Andriy Gapon <avg@FreeBSD.org>
Message-ID: <c2f24b1e-be84-bcdd-ea0b-515cd2aca266@FreeBSD.org>
Date: Thu, 21 Jul 2016 11:07:23 +0300
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On 21/07/2016 00:54, Karl Denninger wrote:
>   io_type = ZIO_TYPE_FREE,
>   io_child_type = ZIO_CHILD_VDEV,
>   io_cmd = 0,
>   io_priority = ZIO_PRIORITY_TRIM,

>   io_flags = 789633,
>   io_stage = ZIO_STAGE_VDEV_IO_DONE,
>   io_pipeline = 3080192,
>   io_orig_flags = 525441,
>   io_orig_stage = ZIO_STAGE_OPEN,
>   io_orig_pipeline = 3080192,
>   io_error = 45,

>   vdev_notrim = 1,

>   vdev_queue = {
>     vq_vdev = 0xfffff804d8683000,
>     vq_class = 0xfffff804d86833e8,
>     vq_active_tree = {
>       avl_root = 0xfffff80290a71240,
>       avl_compar = 0xffffffff8220b8a0 <vdev_queue_offset_compare>,
>       avl_offset = 576,
>       avl_numnodes = 64,
>       avl_size = 952
>     },
>     vq_read_offset_tree = {
>       avl_root = 0x0,
>       avl_compar = 0xffffffff8220b8a0 <vdev_queue_offset_compare>,
>       avl_offset = 600,
>       avl_numnodes = 0,
>       avl_size = 952
>     },
>     vq_write_offset_tree = {
>       avl_root = 0x0,
>       avl_compar = 0xffffffff8220b8a0 <vdev_queue_offset_compare>,
>       avl_offset = 600,
>       avl_numnodes = 0,
>       avl_size = 952
>     },
>   },

Karl,

thank you for the data.
Was this a freshly imported pool?  Or a pool that was not written to
since the import until shortly before the crash?

-- 
Andriy Gapon