Hi all, I'm having some issues. I'm a little confused, so I was checking
our servers today and saw something strange. cat /proc/mdstat shows that
1 device md0 is inactive. I'm not really sure why. I did a bit more
digging and testing using smartctl and it says that the device /dev/sdg
(part of md0) is failing, estimated to fail within 24 hrs. but if i do
df -h it doesn't even show md0, and was talking to a friend and we
disagreed. I believe that based on what smrtctl says the drive is
failing but not failed yet. he doesn't think its a problem with the
drive. do you have any thoughts on this? and why would the device (md0)
suddenly be inactive but still show 2 working devices (sdg, sdh)?
*(proc/mdstat)*
[root@csdatastandby3 bin]# cat /proc/mdstat
Personalities : [raid1] [raid10]
md125 : active raid10 sdf1[5] sdc1[2] sde1[4] sda1[0] sdb1[1] sdd1[3]
11720655360 blocks super 1.2 512K chunks 2 near-copies [6/6] [UUUUUU]
md126 : active raid1 sdg[1] sdh[0]
463992832 blocks super external:/md0/0 [2/2] [UU]
md0 : inactive sdh[1](S) sdg[0](S)
6306 blocks super external:imsm
unused devices: <none>
[root@csdatastandby3 bin]#
*(smartctl)*
[root@csdatastandby3 bin]# smartctl -H /dev/sdg
smartctl 5.43 2012-06-30 r3573 [x86_64-linux-2.6.32-431.17.1.el6.x86_64]
(local build)
Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.net
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: FAILED!
Drive failure expected in less than 24 hours. SAVE ALL DATA.
Failed Attributes:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED
WHEN_FAILED RAW_VALUE
5 Reallocated_Sector_Ct 0x0033 002 002 036 Pre-fail
Always FAILING_NOW 32288
[root@csdatastandby3 bin]#
*(df -h)*
[root@csdatastandby3 bin]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/md126p4 404G 4.3G 379G 2% /
tmpfs 16G 172K 16G 1% /dev/shm
/dev/md126p2 936M 74M 815M 9% /boot
/dev/md126p1 350M 272K 350M 1% /boot/efi
/dev/md125 11T 4.2T 6.1T 41% /data
[root@csdatastandby3 bin]#
*(mdadm -D /dev/md0*
[root@csdatastandby3 bin]# mdadm -D /dev/md0
/dev/md0:
Version : imsm
Raid Level : container
Total Devices : 2
Working Devices : 2
UUID : 32c1fbb7:4479296b:53c02d9b:666a08f6
Member Arrays : /dev/md/Volume0
Number Major Minor RaidDevice
0 8 96 - /dev/sdg
1 8 112 - /dev/sdh
[root@csdatastandby3 bin]#
thanks
-dustink
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