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Date: Wed, 4 Dec 2019 12:53:28 -0800 From: Daniel Phillips <daniel@...nq.net> To: Andreas Dilger <adilger@...ger.ca> Cc: "Theodore Y. Ts'o" <tytso@....edu>, linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, OGAWA Hirofumi <hirofumi@...l.parknet.co.jp> Subject: Re: [RFC] Thing 1: Shardmap fox Ext4 On 2019-12-04 12:47 p.m., Daniel Phillips wrote: > On 2019-12-04 10:03 a.m., Andreas Dilger wrote: >>> Here is a pretty picture to get started: >>> >>> https://github.com/danielbot/Shardmap/wiki/Shardmap-media-format >> >> The shardmap diagram is good conceptually, but it would be useful >> to add a legend on the empty side of the diagram that shows the on-disk >> structures. > > Sounds good, but not sure exactly what you had in mind. Fields of a > shard entry? Fields of the block 0 header? The record entry block has > its own diagram, and is polymorphic anyway, so no fixed format. Ah, the legend can explain that lower tier shard 2 is in process of being split into upper tier shards 4 and 5, and label the shards with offset numbers.
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