From: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
To: lvm-devel@redhat.com
Subject: [PATCH lvconvert Appendix] Experimental: pvmove with disk log and seg-by-seg mirrored LV
Date: Thu, 13 Dec 2007 16:32:01 -0500 [thread overview]
Message-ID: <4761A4D1.2040904@ce.jp.nec.com> (raw)
In-Reply-To: <47619E84.2060905@ce.jp.nec.com>
This patch is experimental and just a proof-of-concept of new APIs.
(Some changes in lib were needed for adding pvmove support.)
Examples of commands and 'dmsetup ls --tree':
("/dev/mapper/d*" are PVs)
Normal pvmove:
# pvmove /dev/mapper/d1 /dev/mapper/d3
testvg-lvol2 (254:11)
|-d2 (254:2)
`-testvg-pvmove0 (254:13)
|-d3 (254:3)
`-d1 (254:1)
testvg-lvol1 (254:10)
`-testvg-pvmove0 (254:13)
|-d3 (254:3)
`-d1 (254:1)
Disklog pvmove:
# pvmove --mirrorlog disk /dev/mapper/d1 /dev/mapper/d3 /dev/mapper/d5:0-0
testvg-lvol2 (254:11)
|-d2 (254:2)
`-testvg-pvmove0 (254:16)
|-testvg-pvmove0_mimage_1 (254:15)
| `-d3 (254:3)
|-testvg-pvmove0_mimage_0 (254:14)
| `-d1 (254:1)
`-testvg-pvmove0_mlog (254:13)
`-d5 (254:5)
testvg-lvol1 (254:10)
`-testvg-pvmove0 (254:16)
|-testvg-pvmove0_mimage_1 (254:15)
| `-d3 (254:3)
|-testvg-pvmove0_mimage_0 (254:14)
| `-d1 (254:1)
`-testvg-pvmove0_mlog (254:13)
`-d5 (254:5)
Normal corelog mirror LV:
# lvcreate -m1 -l1 --mirrorlog core testvg
testvg-lvol0 (254:11)
|-testvg-lvol0_mimage_1 (254:10)
| `-d2 (254:2)
`-testvg-lvol0_mimage_0 (254:9)
`-d1 (254:1)
Seg-by-seg corelog mirror LV:
# lvcreate -m1 -l1 --mirrorlog seg testvg
testvg-lvol0 (254:9)
|-d2 (254:2)
`-d1 (254:1)
Thanks,
--
Jun'ichi Nomura, NEC Corporation of America
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prev parent reply other threads:[~2007-12-13 21:32 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-13 21:05 [PATCH lvconvert 0/6] Refactoring lvconvert mirror Jun'ichi Nomura
2007-12-13 21:31 ` [PATCH lvconvert 1/6] Add insert_layer_for_lv() / remove_layer_from_lv() Jun'ichi Nomura
2007-12-13 21:31 ` [PATCH lvconvert 2/6] Add add_mirror_images() / {add, remove}_mirror_log() Jun'ichi Nomura
2007-12-13 21:31 ` [PATCH lvconvert 3/6] Change lvconvert to use the new mirror APIs Jun'ichi Nomura
2007-12-13 21:31 ` [PATCH lvconvert 4/6] Change lvcreate " Jun'ichi Nomura
2007-12-13 21:31 ` [PATCH lvconvert 5/6] Remove unused mirror functions Jun'ichi Nomura
2007-12-13 21:31 ` [PATCH lvconvert 6/6] Add lv_{add,remove}_mirrors() Jun'ichi Nomura
2007-12-13 21:32 ` Jun'ichi Nomura [this message]
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