我有一個SLES 11.2 PPC(3.0.58-0.6.6-ppc64)系統,它失去了對其卷組的跟蹤(包含資料并不重要的LV,但回來會很好).磁盤通過SAN的兩條光纖路徑連接配接.
當我在上周五計劃停電之前重新啟動它時,問題就出現了.我沒有時間進行故障排除再次将其關閉.該卷組先前已成功使用了大約兩年.
vgscan和pvscan什麼都不傳回：
# pvscan -vP
Partial mode. Incomplete logical volumes will be processed.
Wiping cache of LVM-capable devices
Wiping internal VG cache
Walking through all physical volumes
No matching physical volumes found
# vgscan -vP
Partial mode. Incomplete logical volumes will be processed.
Wiping cache of LVM-capable devices
Wiping internal VG cache
Reading all physical volumes. This may take a while...
Finding all volume groups
No volume groups found
vgcfgrestore報告無法找到PV：
# vgcfgrestore vgclients
Couldn't find device with uuid PyKfIa-cCs9-gBoh-Qb50-yOw4-dHQw-N1YELU.
Couldn't find device with uuid FXfSAO-P9hO-Dgtl-0Ihf-x2jX-TnHU-kSqUA2.
Cannot restore Volume Group vgclients with 2 PVs marked as missing.
Restore Failed.
然而,blkid可以找到那些UUID：
# blkid -t UUID=PyKfIa-cCs9-gBoh-Qb50-yOw4-dHQw-N1YELU
/dev/mapper/3600a0b800029df24000011084db97741: UUID="PyKfIa-cCs9-gBoh-Qb50-yOw4-dHQw-N1YELU" TYPE="LVM2_member"
/dev/sdl: UUID="PyKfIa-cCs9-gBoh-Qb50-yOw4-dHQw-N1YELU" TYPE="LVM2_member"
/dev/sdw: UUID="PyKfIa-cCs9-gBoh-Qb50-yOw4-dHQw-N1YELU" TYPE="LVM2_member"
# blkid -t UUID=FXfSAO-P9hO-Dgtl-0Ihf-x2jX-TnHU-kSqUA2
/dev/mapper/3600a0b800029df24000017ae4f45f30b: UUID="FXfSAO-P9hO-Dgtl-0Ihf-x2jX-TnHU-kSqUA2" TYPE="LVM2_member"
/dev/sdg: UUID="FXfSAO-P9hO-Dgtl-0Ihf-x2jX-TnHU-kSqUA2" TYPE="LVM2_member"
/dev/sdr: UUID="FXfSAO-P9hO-Dgtl-0Ihf-x2jX-TnHU-kSqUA2" TYPE="LVM2_member"
/ etc / lvm / backup / vgclients具有所有正确的資訊,并沒有說PV缺失：
# egrep "(N1YELU|kSqUA2|dm-|ALLOC)" /etc/lvm/backup/vgclients
id = "PyKfIa-cCs9-gBoh-Qb50-yOw4-dHQw-N1YELU"
device = "/dev/dm-7" # Hint only
status = ["ALLOCATABLE"]
id = "FXfSAO-P9hO-Dgtl-0Ihf-x2jX-TnHU-kSqUA2"
device = "/dev/dm-12" # Hint only
status = ["ALLOCATABLE"]
我在SAN上确認了該伺服器上LVM專用(和命名)的卷,并且辨別符(以f30b或7741結尾)在SAN和伺服器上比對：
# multipath -ll | egrep -A5 "(f30b|7741)"
3600a0b800029df24000017ae4f45f30b dm-7 IBM,1814 FAStT
size=575G features='1 queue_if_no_path' hwhandler='1 rdac' wp=rw
|-+- policy='round-robin 0' prio=6 status=active
| `- 6:0:0:1 sdr 65:16 active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
`- 5:0:0:1 sdg 8:96 active ghost running
--
3600a0b800029df24000011084db97741 dm-12 IBM,1814 FAStT
size=834G features='1 queue_if_no_path' hwhandler='1 rdac' wp=rw
|-+- policy='round-robin 0' prio=6 status=active
| `- 5:0:0:7 sdl 8:176 active ready running
`-+- policy='round-robin 0' prio=1 status=enabled
`- 6:0:0:7 sdw 65:96 active ghost running
兩個裝置都沒有分區表(按設計)：
# fdisk -l /dev/dm-7 /dev/dm-12 | grep table
Disk /dev/dm-7 doesn't contain a valid partition table
Disk /dev/dm-12 doesn't contain a valid partition table
我可以直接從裝置上讀取：
# dd if=/dev/dm-7 of=/tmp/a bs=1024 count=1
1+0 records in
1+0 records out
1024 bytes (1.0 kB) copied,0.00121051 s,846 kB/s
# strings /tmp/a
LABELONE
LVM2 001FXfSAOP9hODgtl0Ihfx2jXTnHUkSqUA2
我嘗試重新啟動并删除sd(r | g | l | w)和dm-(7 | 12)并重新掃描,但沒有效果.
我嘗試使用備份值重新建立PV,但它仍然說它找不到它們.
# pvcreate --uuid "PyKfIa-cCs9-gBoh-Qb50-yOw4-dHQw-N1YELU" --restorefile /etc/lvm/backup/vgclients /dev/mapper/3600a0b800029df24000011084db97741 -t
Test mode: Metadata will NOT be updated and volumes will not be (de)activated.
Couldn't find device with uuid PyKfIa-cCs9-gBoh-Qb50-yOw4-dHQw-N1YELU.
Couldn't find device with uuid FXfSAO-P9hO-Dgtl-0Ihf-x2jX-TnHU-kSqUA2.
Device /dev/mapper/3600a0b800029df24000011084db97741 not found (or ignored by filtering).
這是我的lvm.conf,雖然據我所知,我所做的唯一改變是增加日志級别：
# egrep -v "^( *#|$)" /etc/lvm/lvm.conf
devices {
dir = "/dev"
scan = [ "/dev" ]
preferred_names = [ ]
filter = [ "a|^/dev/sda$|","r/.*/" ]
cache = "/etc/lvm/.cache"
write_cache_state = 1
sysfs_scan = 1
md_component_detection = 1
ignore_suspended_devices = 0
}
log {
verbose = 0
syslog = 1
overwrite = 0
level = 2
indent = 1
command_names = 0
prefix = " "
}
backup {
backup = 1
backup_dir = "/etc/lvm/backup"
archive = 1
archive_dir = "/etc/lvm/archive"
retain_min = 10
retain_days = 30
}
shell {
history_size = 100
}
global {
umask = 077
test = 0
units = "h"
activation = 1
proc = "/proc"
locking_type = 3
fallback_to_clustered_locking = 1
fallback_to_local_locking = 1
locking_dir = "/var/run/lvm/lock"
}
activation {
missing_stripe_filler = "/dev/ioerror"
reserved_stack = 256
reserved_memory = 8192
process_priority = -18
mirror_region_size = 512
readahead = "auto"
mirror_log_fault_policy = "allocate"
mirror_device_fault_policy = "remove"
udev_rules = 1
udev_sync = 1
}
dmeventd {
mirror_library = "libdevmapper-event-lvm2mirror.so"
snapshot_library = "libdevmapper-event-lvm2snapshot.so"
}
什麼賦予了什麼？我的VG去了哪裡,我該如何取回它？