From: Maks Re <admaks@gmail.com>
To: ALT Linux sysadmin discuss <sysadmins@lists.altlinux.org>
Subject: [Sysadmins] миграция с md_raid5 на md_raid6
Date: Tue, 4 Jan 2011 12:07:21 +0300
Message-ID: <20110104120721.36c61f34@horse.localdomain> (raw)
Здравствуйте,
имеет ли смысл переход к raid6?
имеется 4 диска wd10ears
для домашней помойки создан раздел md2 (raid5), на котором лежат два
тома lvm с данными, которые не хочется терять...
как на ходу сделать миграцию, и возможно ли такое? без пересоздания и
переноса данных на альтерантивный носитель (которого нету)?
я так понял что типа такого
mdadm -G -l raid6 -n 4 /dev/md2
но:
что будет с томом lvm (двумя) с их размерами..?
# cat /proc/mdstat |grep -A2 md2
md2 : active raid5 sdc6[0] sdd6[3] sdb6[2] sda6[1]
2798154432 blocks level 5, 64k chunk, algorithm 2 [4/4] [UUUU]
# vgdisplay -s
"VG00" 2,61 TiB [2,30 TiB used / 316,53 GiB free]
# lvdisplay
--- Logical volume ---
LV Name /dev/VG00/d_share
VG Name VG00
LV UUID B1F1eP-rsdp-3SxM-PS6s-e6ph-Msbk-E5jeZo
LV Write Access read/write
LV Status available
# open 1
LV Size 1,50 TiB
Current LE 394240
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 768
Block device 253:0
--- Logical volume ---
LV Name /dev/VG00/d_backup
VG Name VG00
LV UUID sLIQtf-ILew-VQFD-jttb-Zh4k-iWhL-g3Mt5s
LV Write Access read/write
LV Status available
# open 1
LV Size 812,00 GiB
Current LE 207872
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 768
Block device 253:1
советы и рекомендации выслушаю.
спасибо.
next reply other threads:[~2011-01-04 9:07 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-04 9:07 Maks Re [this message]
2011-01-04 9:32 ` Michael Shigorin
2011-01-04 9:33 ` Maks Re
2011-01-04 13:18 ` Michael Shigorin
2011-01-04 16:18 ` Dank Bagryantsev
2011-01-04 16:39 ` Michael Shigorin
2011-01-04 20:13 ` Sergey
2011-01-04 21:34 ` Michael Shigorin
2011-01-05 18:00 ` Sergey
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