Bug 301396

Summary:	sys-fs/mdadm-3.1.1 grow fix
Product:	Gentoo Linux	Reporter:	Torsten Kurbad <torsten>
Component:	[OLD] Core system	Assignee:	Gentoo's Team for Core System packages <base-system>
Status:	RESOLVED FIXED
Severity:	major	CC:	kanelxake
Priority:	High
Version:	unspecified
Hardware:	x86
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:	322055
Bug Blocks:
Attachments:	mdadm-3.1.1.ebuild.diff mdadm-3.1.1-grow-arraysize-fix.patch

Description Torsten Kurbad 2010-01-18 16:29:40 UTC

Today I ran into an issue with mdadm-3.1.1, that prevented me from growing my raid6 array (s. http://marc.info/?l=linux-raid&m=125920566107815&w=2 )

According to the developer of mdadm, this is caused by a missing typecast to 'long long', which has been fixed in git.

I patched the ebuild accordingly to make it work for 3.1.1 (s. attachments).

Reproducible: Always

Steps to Reproduce:
1. Create a n-Disk level5 or level6 raid array with mdadm.
2. Add a spare disk.
3. Try mdadm --grow -n (n+1)

Actual Results:  
mdadm erraneously assumes that the array size will be reduced instead of grown and warns you about it.

Expected Results:  
The array size should be extended by the size of one component device.

Comment 1 Torsten Kurbad 2010-01-18 16:35:01 UTC

Created attachment 216811 [details, diff]
mdadm-3.1.1.ebuild.diff

This is a diff to the current sys-fs/mdadm-3.1.1.ebuild that incorporates the grow fix and reinstates the udev rules that got deleted completely on my system before (not duplicated as in bug #295158)

Comment 2 Torsten Kurbad 2010-01-18 16:35:41 UTC

Created attachment 216812 [details, diff]
mdadm-3.1.1-grow-arraysize-fix.patch

This is the actual fix.

Works perfectly for me.

Comment 3 Xake 2010-06-02 14:33:01 UTC

Fixed in mdadm-3.1.2, bump bug #322055

Comment 4 SpanKY gentoo-dev

2010-06-03 02:05:57 UTC

3.1.2 is in the tree now