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Bug #5141

closed

zfs minimum indirect block size is 4K

Added by Matthew Ahrens almost 8 years ago. Updated almost 8 years ago.

Status:
Closed
Priority:
Normal
Category:
zfs - Zettabyte File System
Start date:
2014-09-07
Due date:
% Done:

100%

Estimated time:
Difficulty:
Medium
Tags:
needs-triage
Gerrit CR:

Description

The smallest indirect block size that we use is 4K (for the DDT). We should
encode and enforce this in the code. This will ensure that we never do
something wasteful like set the indirect block size to 1K when on 4K-sector
devices (which ztest does today). It also allows some space estimates to be
tighter, and to use a little less memory for some data structures that have an
entry per possible level.

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