Date: Thu, 3 May 2012 21:47:43 GMT From: Warren Block <wblock@wonkity.com> To: freebsd-gnats-submit@FreeBSD.org Subject: bin/167567: gpart(8) -a alignment silently overrides -b beginning option Message-ID: <201205032147.q43LlhWj050959@red.freebsd.org> Resent-Message-ID: <201205032150.q43Lo5DA091184@freefall.freebsd.org>
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>Number: 167567
>Category: bin
>Synopsis: gpart(8) -a alignment silently overrides -b beginning option
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu May 03 21:50:05 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator: Warren Block
>Release: 9-STABLE
>Organization:
>Environment:
FreeBSD lightning 9.0-STABLE FreeBSD 9.0-STABLE #0 r234953: Thu May 3 09:21:21 MDT 2012 root@lightning:/usr/obj/usr/src/sys/LIGHTNING amd64
>Description:
When both the -a and -b options are given, -a overrides the value given by -b.
gpart add -t freebsd-ufs -a4k -b1m -s2g ada0
adds a partition that starts at the next available even multiple of 4k rather than at 1M. If the -b value is an even multiple of the -a value, it should be used. Otherwise, an error should be shown.
>How-To-Repeat:
gpart create -s gpt ada0
gpart add -t freebsd-boot -a4k -s512k ada0
gpart add -t freebsd-ufs -a4k -b1m -s2g ada0
gpart show ada0
=> 34 42680253 ada0 GPT (20G)
34 6 - free - (3.0k)
40 1024 1 freebsd-boot (512k)
1064 4194304 2 freebsd-ufs (2.0G)
4195368 38484919 - free - (18G)
The freebsd-ufs partition should start at 2048, or 1M.
>Fix:
If a -b value is given, compare it to the alignment value. Use if it matches the alignment, otherwise error out.
>Release-Note:
>Audit-Trail:
>Unformatted:
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