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# tail /var/log/messages
Aug 28 11:08:51 hostname kernel: Write-error on swap-device (8:0:44
Aug 28 11:08:51 hostname kernel: Write-error on swap-device (8:0:456)
Aug 28 11:08:51 hostname kernel: Write-error on swap-device (8:0:464)
Aug 28 11:08:51 hostname kernel: Write-error on swap-device (8:0:472)
Aug 28 11:08:51 hostname kernel: scsi 0:0:2:0: rejecting I/O to dead device
Aug 28 11:08:52 hostname kernel: Write-error on swap-device (8:0:632)
Aug 28 11:08:52 hostname kernel: scsi 0:0:2:0: rejecting I/O to dead device
Aug 28 11:08:52 hostname kernel: Write-error on swap-device (8:0:68
Aug 28 11:08:52 hostname kernel: Write-error on swap-device (8:0:696)
Aug 28 11:08:52 hostname kernel: Write-error on swap-device (8:0:704)
# free -g
total used free shared buffers cached
Mem: 62 62 0 0 0 12
-/+ buffers/cache: 49 13
Swap: 31 0 31
# swapon -s
Filename Type Size Used Priority
/dev/sda2\040(deleted) partition 16386292 244 -1
/dev/sde2 partition 16386292 0 -1
# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sde1 95G 4.3G 86G 5% /
tmpfs 32G 12K 32G 1% /dev/shm
/dev/sde3 1.7T 192G 1.5T 12% /opt
# fdisk -l
Disk /dev/sde: 1999.8 GB, 1999844147200 bytes
255 heads, 63 sectors/track, 243133 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sde1 * 1 12748 102398278+ 83 Linux
/dev/sde2 12749 14788 16386300 82 Linux swap / Solaris
/dev/sde3 14789 243133 1834181212+ 83 Linux
是没有 /dev/sda2 这个盘设备的。
# cat /etc/fstab
LABEL=/ / ext3 defaults,noatime,nodiratime 1 1
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0
LABEL=SWAP-sda2 swap swap defaults 0 0
LABEL=/opt /opt ext3 defaults,noatime,nodiratime 0 0
原来是历史问题,fstab配置有问题。
# swapoff /dev/sda2
swapoff: /dev/sda2: No such file or directory
# swapoff -a
swapoff: cannot find the device for LABEL=SWAP-sda2
# swapon -p 100 /dev/sde2
# swapon -s
Filename Type Size Used Priority
/dev/sda2\040(deleted) partition 16386292 244 -1
/dev/sde2 partition 16386292 0 100
提高 /dev/sde2的优化级,现在问题依旧!
小伙伴有什么办法吗?
# uptime
11:20:00 up 654 days, 19:09, 1 user, load average: 0.92, 0.84, 0.90
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