Administrace komentářů

Dobry den,

dnes jsem se prihlasil ke skolnimu serveru a zjistil jsem ze vubec nevidim lvm svazky. Nasledne zjistuji ze nevidim uz raid md2, na kterem lvm jsou.

lvm je na raidu md2 (ktery momentalne nevidim, coz asi bude ten problem..) Predpokladam, ze bude nutne znova zkonfigurovat raid md2 a problem se vyresi. Otazkou vsak zni jak, abych neco nepokazil a neuzavrel si posledni cestu k obnove dat...

Dalsi problem mozna vidim v tom, ze raid mozna byl nejakou dobu degradovany a tim padem ani nevim, jak zjistit na kterem disku jsou data aktualni.

Najde se nejaka dobra duse, ktera pomuze male zakladni skole s obnovou dat?

Predem dekuji za kazdou radu, ktera povede k vyreseni problemu.

# uname -a
Linux zsserver.zsserver.cz 2.6.27.41-170.2.117.fc10.i686 #1 SMP Thu Dec 10 11:00:29 EST 2009 i686 i686 i386 GNU/Linux

# cat /proc/mdstat 
Personalities : [raid1] [raid6] [raid5] [raid4] 
md1 : active raid1 sda2[0] sdb2[1]
      8193024 blocks [2/2] [UU]
      
md0 : active raid1 sda1[0] sdb1[1]
      40957568 blocks [2/2] [UU]

# cat /etc/mdadm.conf
DEVICE partitions
MAILADDR root

ARRAY /dev/md0 level=raid1 num-devices=2 metadata=0.90 UUID=37efd30a:4641bfc4:92119c33:4c34d7c2
ARRAY /dev/md1 level=raid1 num-devices=2 metadata=0.90 UUID=18faced7:97b11c67:6210daaf:59916c8b
ARRAY /dev/md2 level=raid1 num-devices=2 metadata=0.90 UUID=4a5e2c1d:f410a2c2:62515b2c:be8c9274

[root@zsserver ~]# cat /etc/lvm/backup/lvm_md_d2 
# Generated by LVM2 version 2.02.39 (2008-06-27): Thu Jun 30 15:40:08 2011

contents = "Text Format Volume Group"
version = 1

description = "Created *after* executing 'lvcreate -L40000 -n ouspolecne lvm_md_d2'"

creation_host = "zsserver.zsserver.cz"	# Linux zsserver.zsserver.cz 2.6.27.41-170.2.117.fc10.i686 #1 SMP Thu Dec 10 11:00:29 EST 2009 i686
creation_time = 1309441208	# Thu Jun 30 15:40:08 2011

lvm_md_d2 {
	id = "01TFW2-ryN8-TjSq-FGof-4xM3-CJVZ-mKdujS"
	seqno = 12
	status = ["RESIZEABLE", "READ", "WRITE"]
	extent_size = 8192		# 4 Megabytes
	max_lv = 0
	max_pv = 0

	physical_volumes {

		pv0 {
			id = "EluOmr-qQgT-2kXW-h01W-vHVv-H3UE-Lxngr0"
			device = "/dev/md2"	# Hint only

			status = ["ALLOCATABLE"]
			dev_size = 878466176	# 418,885 Gigabytes
			pe_start = 384
			pe_count = 107234	# 418,883 Gigabytes
		}
	}

	logical_volumes {

		service {
			id = "efPtv1-zXWP-Bv57-Z3UY-58sE-h7g3-3loUFq"
			status = ["READ", "WRITE", "VISIBLE"]
			segment_count = 1

			segment1 {
				start_extent = 0
				extent_count = 10000	# 39,0625 Gigabytes

				type = "striped"
				stripe_count = 1	# linear

				stripes = [
					"pv0", 0
				]
			}
		}

		public {
			id = "KvuRiQ-N5PI-nN4R-gaJb-sup0-dnzh-becsgV"
			status = ["READ", "WRITE", "VISIBLE"]
			segment_count = 1

			segment1 {
				start_extent = 0
				extent_count = 1000	# 3,90625 Gigabytes

				type = "striped"
				stripe_count = 1	# linear

				stripes = [
					"pv0", 20000
				]
			}
		}

		kantors {
			id = "5gZ2Kg-mC6e-SulT-dUA4-Z77Q-osd3-MKKFQq"
			status = ["READ", "WRITE", "VISIBLE"]
			segment_count = 1

			segment1 {
				start_extent = 0
				extent_count = 10000	# 39,0625 Gigabytes

				type = "striped"
				stripe_count = 1	# linear

				stripes = [
					"pv0", 31000
				]
			}
		}

		vyuka {
			id = "KxIpRm-DGpA-LkwO-HonC-cVs3-9CD7-mkXoRG"
			status = ["READ", "WRITE", "VISIBLE"]
			segment_count = 1

			segment1 {
				start_extent = 0
				extent_count = 10000	# 39,0625 Gigabytes

				type = "striped"
				stripe_count = 1	# linear

				stripes = [
					"pv0", 41000
				]
			}
		}

		netlogon {
			id = "xEUSH1-sd16-GhHs-62KS-pGhW-pDKG-l6fTF6"
			status = ["READ", "WRITE", "VISIBLE"]
			segment_count = 1

			segment1 {
				start_extent = 0
				extent_count = 100	# 400 Megabytes

				type = "striped"
				stripe_count = 1	# linear

				stripes = [
					"pv0", 51000
				]
			}
		}

		users {
			id = "LxiUrF-Wvwm-Q0Nb-q2BU-XPe3-n0HJ-YiS3qZ"
			status = ["READ", "WRITE", "VISIBLE"]
			segment_count = 1

			segment1 {
				start_extent = 0
				extent_count = 10000	# 39,0625 Gigabytes

				type = "striped"
				stripe_count = 1	# linear

				stripes = [
					"pv0", 51100
				]
			}
		}

		ouspolecne {
			id = "cap2qc-NvWu-ip5C-C7EI-tWTj-vPcd-DwA01y"
			status = ["READ", "WRITE", "VISIBLE"]
			segment_count = 1

			segment1 {
				start_extent = 0
				extent_count = 10000	# 39,0625 Gigabytes

				type = "striped"
				stripe_count = 1	# linear

				stripes = [
					"pv0", 61100
				]
			}
		}
	}
}

# vgchange -a y lvm_md_d2
  Volume group "lvm_md_d2" not found