Portál AbcLinuxu, 12. května 2025 15:24
2.6.2009 20:36
/dev/sdb4.vgscan. Po tomto kroku by melo LVM vedet o preparovanem disku, overit pres vgdisplay (popripade pvdisplay). Muze se stat, ze LV v VG nebudou dostupne, coz se zmeni pres vgchange -a y /dev/jmeno_gorupy/jmeno_volume. Pak uz jen staci klasicky mount pro jistotu jen read only a data prekopirovat jinam. mount si bude nejspise schopen sam zjistit typ FS z hlavicky LV.
root@komp:~# vgdisplay --- Volume group --- VG Name komp System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 3 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 2 Max PV 0 Cur PV 1 Act PV 1 VG Size 148.81 GB PE Size 4.00 MB Total PE 38095 Alloc PE / Size 38095 / 148.81 GB Free PE / Size 0 / 0 VG UUID 5GuAOx-1uVM-0Vgm-U0Ro-Kl21-iZyl-QvLZtF root@komp:~#
root@komp:~# fdisk -l /dev/sda Disk /dev/sda: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x233b355b Device Boot Start End Blocks Id System /dev/sda1 1 26 208844+ fd Linux raid autodetect /dev/sda2 27 156 1044225 fd Linux raid autodetect /dev/sda3 157 182 208845 fd Linux raid autodetect /dev/sda4 183 121601 975298117+ fd Linux raid autodetect
Line 1 Col 0 1046 bytes 100%
# Generated by LVM2: Wed Apr 1 15:20:30 2009
contents = "Text Format Volume Group"
version = 1
description = "Created *after* executing '/sbin/lvcreate -l 238060 -n lv0 vg0'"
creation_host = "WDShareSpace" # Linux WDShareSpace 2.6.12.6-arm1 #30 Wed Nov 12 14:45:36 CST 2008 armv5tejl
creation_time = 1238592030 # Wed Apr 1 15:20:30 2009
vg0 {
id = "HnF29L-nv4X-Qo4V-Ap6Q-TTqX-EYFk-hLEu8Q"
seqno = 2
status = ["RESIZEABLE", "READ", "WRITE"]
extent_size = 8192 # 4 Megabytes
max_lv = 255
max_pv = 255
physical_volumes {
pv0 {
id = "i1usil-1vIi-LeWT-lgRs-w45V-hYby-S5cXf1"
device = "/dev/md2" # Hint only
status = ["ALLOCATABLE"]
pe_start = 384
pe_count = 238060 # 929.922 Gigabytes
}
}
logical_volumes {
lv0 {
id = "5y2wwd-5OQN-vTwj-u3yV-la1o-nV5W-aKCYEn"
status = ["READ", "WRITE", "VISIBLE"]
segment_count = 1
segment1 {
start_extent = 0
extent_count = 238060 # 929.922 Gigabytes
type = "striped"
stripe_count = 1 # linear
stripes = [
"pv0", 0
]
}
}
}
}
mdadm --examine --scan /dev/sda4 >> /etc/mdadm/mdadm.conf
ARRAY /dev/md2 level=raid1 num-devices=2 UUID=c1bdd68c:f39cfb85:9de312f2:55a71978- nastartovani raid zarizeni
mdadm -A -s
Vypis stavu raid zarizeni:
cat /proc/mdstat
root@komp:~# cat /proc/mdstat
Personalities : [raid1]
md2 : active raid1 sda4[0]
975097920 blocks [2/1] [U_]
unused devices: none
lvmdiskscan uz pote vidi /dev/md2 jako LVM zarizeni
root@komp:~# lvmdiskscan /dev/ram0 [ 64.00 MB] /dev/komp/root [ 145.94 GB] /dev/ram1 [ 64.00 MB] /dev/komp/swap_1 [ 2.87 GB] /dev/ram2 [ 64.00 MB] /dev/md2 [ 929.93 GB] LVM physical volume /dev/vg0/lv0 [ 929.92 GB] /dev/ram3 [ 64.00 MB] /dev/sda3 [ 203.95 MB] /dev/ram4 [ 64.00 MB] /dev/ram5 [ 64.00 MB] /dev/ram6 [ 64.00 MB] /dev/ram7 [ 64.00 MB] /dev/ram8 [ 64.00 MB] /dev/ram9 [ 64.00 MB] /dev/ram10 [ 64.00 MB] /dev/ram11 [ 64.00 MB] /dev/ram12 [ 64.00 MB] /dev/ram13 [ 64.00 MB] /dev/ram14 [ 64.00 MB] /dev/ram15 [ 64.00 MB] /dev/sdb1 [ 148.81 GB] LVM physical volume /dev/sdb5 [ 243.14 MB] 1 disk 20 partitions 0 LVM physical volume whole disks 2 LVM physical volumesNasleduje
vgascan:
root@komp:~# vgscan Reading all physical volumes. This may take a while... Found volume group "komp" using metadata type lvm2 Found volume group "vg0" using metadata type lvm2 root@komp:~#Pote
vgdisplay
root@komp:~# vgdisplay vg0 --- Volume group --- VG Name vg0 System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 2 VG Access read/write VG Status resizable MAX LV 255 Cur LV 1 Open LV 1 Max PV 255 Cur PV 1 Act PV 1 VG Size 929.92 GB PE Size 4.00 MB Total PE 238060 Alloc PE / Size 238060 / 929.92 GB Free PE / Size 0 / 0 VG UUID HnF29L-nv4X-Qo4V-Ap6Q-TTqX-EYFk-hLEu8Q root@komp:~#A pak uz jen namountovat (pro jistotu ro):
mount -o ro /dev/mapper/vg0-lv0 /disk4
A data vykopirovat....
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