kern/143056: atacontrol can not create raid1 (mirror) from one drive
Oles Hnatkevych
don_oles at able.com.ua
Thu Jan 21 15:00:19 UTC 2010
>Number: 143056
>Category: kern
>Synopsis: atacontrol can not create raid1 (mirror) from one drive
>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 Jan 21 15:00:18 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator: Oles Hnatkevych
>Release: FreeBSD 6.4
>Organization:
>Environment:
>Description:
atacontrol create raid1 ad4
This command fails with the message
atacontrol: At least 2 disks must be specified
This is bizarre since there MUST be a possibility to create 'degraded' mirrors for the purpose of attaching a second drive after the one-drive-mirror is created, as part of provisioning.
If the check is commented in atacontrol.c then it fails with the ioctl error, so the limitation is in the kernel driver.
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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