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From: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
To: lvm-devel@redhat.com
Subject: [PATCH pvmove 3/6] Add split_parent_segments()
Date: Thu, 06 Dec 2007 11:49:53 -0500	[thread overview]
Message-ID: <47582831.3020607@ce.jp.nec.com> (raw)
In-Reply-To: <475825EF.6000803@ce.jp.nec.com>

Add split_parent_segments().

The function walks through LVs in the VG.
For each lv segment, check if it's on multiple layer segments.
If so, split the lv segment so that only 1 layer segment is under
the lv segment.

For example, a segment on pvmove layer is a source segment of the move.
If there are multiple underlying pvmove segments, it means the
destination is splitted and the source segment should be splitted
when the move completes.
The function is a helper for cases like this.

This is a generalized version of _split_source_lv_segment()
in the previous post:
https://www.redhat.com/archives/lvm-devel/2007-November/msg00035.html

Thanks,
-- 
Jun'ichi Nomura, NEC Corporation of America
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  parent reply	other threads:[~2007-12-06 16:49 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-12-06 16:40 [PATCH pvmove 0/6] Refactoring pvmove with generic APIs Jun'ichi Nomura
2007-12-06 16:48 ` [PATCH pvmove 1/6] Add insert_layer_for_segments_on_pv() Jun'ichi Nomura
2007-12-06 16:48 ` [PATCH pvmove 2/6] Add convert_segments_mirrored() Jun'ichi Nomura
2007-12-06 16:49 ` Jun'ichi Nomura [this message]
2007-12-06 16:50 ` [PATCH pvmove 4/6] Change pvmove to use the generalized APIs Jun'ichi Nomura
2007-12-06 16:51 ` [PATCH pvmove 5/6] Remove unused mirrored_pv/mirrored_pe params from internal code Jun'ichi Nomura
2007-12-06 16:51 ` [PATCH pvmove 6/6] Remove unused can_split param from allocate_extents() Jun'ichi Nomura
2007-12-06 16:53 ` [PATCH pvmove 0/6] Refactoring pvmove with generic APIs Jun'ichi Nomura
2007-12-07 11:49 ` Heinz Mauelshagen
2007-12-07 15:48   ` Jun'ichi Nomura

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