Spin Down Ext4 4Tb disks with QTS 4.1.1

Discussion about hard drive spin down (standby) feature of NAS.
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kdzwart
Starting out
Posts: 19
Joined: Mon Nov 17, 2014 3:50 pm

Spin Down Ext4 4Tb disks with QTS 4.1.1

Post by kdzwart »

after some more investigation, i decided to create a new thread for this, since i believe this is somewhat related to ext4 with QTS 4.1
i have 2 QNAP's, bought a HS-251 to replace my older TS-259Pro+
but since i still have the TS-259, i decided to promote that to a test system
for both systems all extra's are disabled
so current configuration is:
1 HS-251 2 4Tb QTS 4.1.1 formatted in ext4 there is 2Tb ocupied on the system
1 TS 259Pro+ 2 4Tb downgraded to 3.8.4 Build 20130816, did a factory reset formatted to Ext3

for both units i use 2 scripts to check activity, one is the well known blkdevMonitor,sh
the other is a script to monitor activity, and force to sleep is idle for more than x minutes, and write to logs
it will write stuff like below to logs if set to autorun
21-11 06:13:18 sda awoke after 12 m of sleep (S/A=12/1)
i added sone extra echo's in the script so it output some more data like /sys/block/sdx/stat (nr blocks accessed for example)

now the HS251 doesn't goto sleep at all
always i see in blkdevMonitor output the following what is worrying me, and don't know what it is (well it is the raid subsystem, but what and why?)
<7>[169627.805917] md1_raid1(2492): WRITE block 7794127504 on sda3 (1 sectors)
always md1_raid1 and always the exact same block

the TS-259 is going to sleep nicely, needs some fine tuning, but it does goto sleep
i don't see this md1_raid1 process here at all

my next step will be to upgrade the TS-259 to QTS 4.1.1 and see if the firmware or EXT4 is the rootcause of my disks not sleeping
or maybe i'll just forget about raid1 and do a single disk with replication to disk2, since i have low faith it will work on the HS-251
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ChocoSmith
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Posts: 9
Joined: Tue Nov 18, 2014 4:31 am

Re: Spin Down Ext4 4Tb disks with QTS 4.1.1

Post by ChocoSmith »

hi, running a ts-453 also same problem

============= 2/3 test, Sun Nov 23 17:39:23 CET 2014 ===============
<7>[ 538.788570] md1_raid1(2214): WRITE block 167638248 on sdb3 (1 sectors)
<7>[ 538.992517] md1_raid1(2214): WRITE block 167638248 on sdb3 (1 sectors)
<7>[ 538.788570] md1_raid1(2214): WRITE block 167638248 on sdb3 (1 sectors)


The only difference i get is I also get a lot of
<7>[ 1243.898897] vgdisplay(13179): READ block 0 on md13 (8 sectors)
<7>[ 1243.912077] vgdisplay(13183): READ block 0 on md13 (8 sectors)
<7>[ 1243.926526] vgdisplay(13187): READ block 0 on md13 (8 sectors)
<7>[ 1243.707483] vgdisplay(13179): READ block 0 on md1 (8 sectors)

which doesn't make sense to me. i've restarted a billion times, i'm not linux literate. i kind of got the qnap thinking i could skip any thought
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XTJzMKcaOjs1
New here
Posts: 4
Joined: Fri Nov 28, 2014 7:53 am

Re: Spin Down Ext4 4Tb disks with QTS 4.1.1

Post by XTJzMKcaOjs1 »

Same problem with me

Configuration
============
NAS: HS-251
Firmware: 4.1.1 Build 1101
Services: all disabled besides ssh and sftp

blkdevMonitor_v2.log gives entries as shown below and nothing else.

Code: Select all

<7>[ 6462.913432] md1_raid1(1938): WRITE block 5840623504 on sdb3 (1 sectors)
<7>[ 6462.913453] md1_raid1(1938): WRITE block 5840623504 on sda3 (1 sectors)
or

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<7>[ 6656.961515] vgdisplay(29871): READ block 0 on md1 (8 sectors)
<7>[ 6656.993472] vgdisplay(29875): READ block 8 on md1 (8 sectors)
<7>[ 6656.993634] vgdisplay(29875): READ block 16 on md1 (8 sectors)
<7>[ 6656.982123] vgdisplay(29871): READ block 0 on md9 (8 sectors)
<7>[ 6656.993294] vgdisplay(29875): READ block 0 on md13 (8 sectors)
<7>[ 6656.961175] vgdisplay(29871): READ block 0 on md256 (8 sectors)
Remarks:
- md1_raid1 process accesses the disks (sda/b3 <=> md1) always at the same sector
- md9_raid1, md13_raid1 and md256_raid1 processes do not access the disks
- vgdisplay (displays information about LVM volume groups) accesses md1, md9, md13 and md256

parted /dev/sda print

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Model: Seagate ST3000DM001-1ER1 (scsi)
Disk /dev/sda: 3001GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End     Size    File system     Name     Flags
 1      20.5kB  543MB   543MB   ext3            primary
 2      543MB   1086MB  543MB   linux-swap(v1)  primary
 3      1086MB  2991GB  2990GB                  primary
 4      2991GB  2992GB  543MB   ext3            primary
 5      2992GB  3001GB  8554MB  linux-swap(v1)  primary
parted /dev/sdb print

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Model: Seagate ST3000DM001-1ER1 (scsi)
Disk /dev/sdb: 3001GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End     Size    File system     Name     Flags
 1      20.5kB  543MB   543MB   ext3            primary
 2      543MB   1086MB  543MB   linux-swap(v1)  primary
 3      1086MB  2991GB  2990GB                  primary
 4      2991GB  2992GB  543MB   ext3            primary
 5      2992GB  3001GB  8554MB  linux-swap(v1)  primary
df -h | grep -v qpkg | grep -v grep

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Filesystem                Size      Used Available Use% Mounted on
/dev/ram0               193.7M    126.3M     67.4M  65% /
devtmpfs                442.2M      4.0k    442.2M   0% /dev
tmpfs                    64.0M    160.0k     63.8M   0% /tmp
tmpfs                   447.1M      4.0k    447.1M   0% /dev/shm
/dev/md9                509.5M    122.8M    386.6M  24% /mnt/HDA_ROOT
/dev/mapper/cachedev1     2.7T    664.5G      2.0T  24% /share/CACHEDEV1_DATA
/dev/md13               364.2M    295.2M     69.0M  81% /mnt/ext
tmpfs                    32.0M         0     32.0M   0% /.eaccelerator.tmp
mount | grep -v bind | grep -v grep

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/proc on /proc type proc (rw)
devpts on /dev/pts type devpts (rw)
sysfs on /sys type sysfs (rw)
tmpfs on /tmp type tmpfs (rw,size=64M)
tmpfs on /dev/shm type tmpfs (rw)
/dev/md9 on /mnt/HDA_ROOT type ext3 (rw,data=ordered)
/dev/mapper/cachedev1 on /share/CACHEDEV1_DATA type ext4 (rw,usrjquota=aquota.user,jqfmt=vfsv0,user_xattr,data=ordered,nodelalloc,acl)
/dev/md13 on /mnt/ext type ext3 (rw,data=ordered)
tmpfs on /.eaccelerator.tmp type tmpfs (rw,size=32M)
none on /sys/kernel/config type configfs (rw)
/etc/mdstat

Code: Select all

Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath] 
md1 : active raid1 sdb3[0] sda3[1]
      2920311616 blocks super 1.0 [2/2] [UU]
      
md256 : active raid1 sda2[1] sdb2[0]
      530112 blocks super 1.0 [2/2] [UU]
      bitmap: 0/1 pages [0KB], 65536KB chunk

md13 : active raid1 sdb4[0] sda4[1]
      458880 blocks super 1.0 [24/2] [UU______________________]
      bitmap: 1/1 pages [4KB], 65536KB chunk

md9 : active raid1 sdb1[0] sda1[1]
      530048 blocks super 1.0 [24/2] [UU______________________]
      bitmap: 1/1 pages [4KB], 65536KB chunk

unused devices: <none>
mdadm -D /dev/md1

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/dev/md1:
        Version : 1.0
  Creation Time : Sat Oct 25 00:51:03 2014
     Raid Level : raid1
     Array Size : 2920311616 (2785.03 GiB 2990.40 GB)
  Used Dev Size : 2920311616 (2785.03 GiB 2990.40 GB)
   Raid Devices : 2
  Total Devices : 2
    Persistence : Superblock is persistent

    Update Time : Fri Nov 28 02:23:56 2014
          State : clean 
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0

           Name : 1
           UUID : 2f881ee8:8852edc7:99c6aa73:42d58d61
         Events : 229

    Number   Major   Minor   RaidDevice State
       0       8       19        0      active sync   /dev/sdb3
       1       8        3        1      active sync   /dev/sda3
Any news on this?
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XTJzMKcaOjs1
New here
Posts: 4
Joined: Fri Nov 28, 2014 7:53 am

Re: Spin Down Ext4 4Tb disks with QTS 4.1.1

Post by XTJzMKcaOjs1 »

Problem solved, using the following approach:
- Use blkdevMonitor script from QNAP wiki (http://wiki.qnap.com/wiki/Find_out_whic ... m_spindown) to monitor the disk access
- regular access justified that the disk can not go into standy mode
- deactivate all services (ftp, dns, web server, ...), but keep ssh running to be able to connect => still disk accesses as before => not related to the services
- deinstall all Apps => no more disk accesses and disk go into standby => find the App causing the mess
- successive re-installation of apps until the disk accesses start again. In my case the App PostgreSQL - Beta caused the accesses.
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camelbl
Starting out
Posts: 12
Joined: Fri Dec 12, 2014 6:16 pm

Re: Spin Down Ext4 4Tb disks with QTS 4.1.1

Post by camelbl »

Hey kdzwart
I am having same problem here.
I can't understand why QNAP is not providing a mechanism to put the NAS to sleep after x minutes of IDLE.
Would you post your two scripts that you have mentioned here?

thanks!
cheers
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Win a 2
New here
Posts: 2
Joined: Thu Jan 08, 2015 4:03 am

Re: Spin Down Ext4 4Tb disks with QTS 4.1.1

Post by Win a 2 »

same Problem here
TS-653 pro
============= 0/10 test, Wed Jan 7 20:56:48 CET 2015 ===============
<7>[36460.910242] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36460.910262] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36460.910277] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36460.910288] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36460.910277] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36460.910288] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36460.910242] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36460.910262] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)

============= 1/10 test, Wed Jan 7 20:56:51 CET 2015 ===============
<7>[36461.667218] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36461.667233] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36461.667243] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36461.667253] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36461.688043] md1_raid5(2278): WRITE block 7794127504 on sdc3 (1 sectors)
<7>[36461.688058] md1_raid5(2278): WRITE block 7794127504 on sdd3 (1 sectors)
<7>[36461.688069] md1_raid5(2278): WRITE block 7794127504 on sda3 (1 sectors)
<7>[36461.688077] md1_raid5(2278): WRITE block 7794127504 on sdb3 (1 sectors)
<7>[36461.667243] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36461.688069] md1_raid5(2278): WRITE block 7794127504 on sda3 (1 sectors)
<7>[36461.667253] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36461.688077] md1_raid5(2278): WRITE block 7794127504 on sdb3 (1 sectors)
<7>[36461.667218] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36461.688043] md1_raid5(2278): WRITE block 7794127504 on sdc3 (1 sectors)
<7>[36461.667233] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36461.688058] md1_raid5(2278): WRITE block 7794127504 on sdd3 (1 sectors)

============= 2/10 test, Wed Jan 7 20:56:51 CET 2015 ===============
<7>[36462.045017] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36462.045035] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36462.045050] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36462.045059] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36462.065839] md1_raid5(2278): WRITE block 7794127504 on sdc3 (1 sectors)
<7>[36462.065865] md1_raid5(2278): WRITE block 7794127504 on sdd3 (1 sectors)
<7>[36462.065880] md1_raid5(2278): WRITE block 7794127504 on sda3 (1 sectors)
<7>[36462.065894] md1_raid5(2278): WRITE block 7794127504 on sdb3 (1 sectors)
<7>[36462.045050] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36462.065880] md1_raid5(2278): WRITE block 7794127504 on sda3 (1 sectors)
<7>[36462.045059] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36462.065894] md1_raid5(2278): WRITE block 7794127504 on sdb3 (1 sectors)
<7>[36462.045017] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36462.065839] md1_raid5(2278): WRITE block 7794127504 on sdc3 (1 sectors)
<7>[36462.045035] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36462.065865] md1_raid5(2278): WRITE block 7794127504 on sdd3 (1 sectors)

============= 3/10 test, Wed Jan 7 20:56:52 CET 2015 ===============
<7>[36467.088213] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36467.088239] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36467.088251] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36467.088261] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36467.088272] md1_raid5(2278): WRITE block 7794127488 on sdc3 (8 sectors)
<7>[36467.088279] md1_raid5(2278): WRITE block 7794127488 on sdd3 (8 sectors)
<7>[36467.088285] md1_raid5(2278): WRITE block 7794127488 on sda3 (8 sectors)
<7>[36467.088290] md1_raid5(2278): WRITE block 7794127488 on sdb3 (8 sectors)
<7>[36467.187162] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36467.187175] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36467.187183] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36467.187195] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36467.205632] md1_raid5(2278): WRITE block 7794127504 on sdc3 (1 sectors)
<7>[36467.205646] md1_raid5(2278): WRITE block 7794127504 on sdd3 (1 sectors)
<7>[36467.205655] md1_raid5(2278): WRITE block 7794127504 on sda3 (1 sectors)
<7>[36467.205666] md1_raid5(2278): WRITE block 7794127504 on sdb3 (1 sectors)
<7>[36467.546078] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36467.546095] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36467.546109] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36467.546119] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36467.565807] md1_raid5(2278): WRITE block 7794127504 on sdc3 (1 sectors)
<7>[36467.565816] md1_raid5(2278): WRITE block 7794127504 on sdd3 (1 sectors)
<7>[36467.565825] md1_raid5(2278): WRITE block 7794127504 on sda3 (1 sectors)
<7>[36467.565834] md1_raid5(2278): WRITE block 7794127504 on sdb3 (1 sectors)
<7>[36467.088251] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36467.088285] md1_raid5(2278): WRITE block 7794127488 on sda3 (8 sectors)
<7>[36467.187183] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36467.205655] md1_raid5(2278): WRITE block 7794127504 on sda3 (1 sectors)
<7>[36467.546109] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36467.565825] md1_raid5(2278): WRITE block 7794127504 on sda3 (1 sectors)
<7>[36467.088261] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36467.088290] md1_raid5(2278): WRITE block 7794127488 on sdb3 (8 sectors)
<7>[36467.187195] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36467.205666] md1_raid5(2278): WRITE block 7794127504 on sdb3 (1 sectors)
<7>[36467.546119] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36467.565834] md1_raid5(2278): WRITE block 7794127504 on sdb3 (1 sectors)
<7>[36467.088213] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36467.088272] md1_raid5(2278): WRITE block 7794127488 on sdc3 (8 sectors)
<7>[36467.187162] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36467.205632] md1_raid5(2278): WRITE block 7794127504 on sdc3 (1 sectors)
<7>[36467.546078] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36467.565807] md1_raid5(2278): WRITE block 7794127504 on sdc3 (1 sectors)
<7>[36467.088239] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36467.088279] md1_raid5(2278): WRITE block 7794127488 on sdd3 (8 sectors)
<7>[36467.187175] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36467.205646] md1_raid5(2278): WRITE block 7794127504 on sdd3 (1 sectors)
<7>[36467.546095] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36467.565816] md1_raid5(2278): WRITE block 7794127504 on sdd3 (1 sectors)

============= 4/10 test, Wed Jan 7 20:56:57 CET 2015 ===============
<7>[36471.859121] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36471.859135] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36471.859146] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36471.859157] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36471.920453] md1_raid5(2278): WRITE block 7794127504 on sdc3 (1 sectors)
<7>[36471.920465] md1_raid5(2278): WRITE block 7794127504 on sdd3 (1 sectors)
<7>[36471.920474] md1_raid5(2278): WRITE block 7794127504 on sda3 (1 sectors)
<7>[36471.920482] md1_raid5(2278): WRITE block 7794127504 on sdb3 (1 sectors)
<7>[36471.950268] md1_raid5(2278): WRITE block 7794127488 on sdc3 (8 sectors)
<7>[36471.950278] md1_raid5(2278): WRITE block 7794127488 on sdd3 (8 sectors)
<7>[36471.950284] md1_raid5(2278): WRITE block 7794127488 on sda3 (8 sectors)
<7>[36471.950290] md1_raid5(2278): WRITE block 7794127488 on sdb3 (8 sectors)
<7>[36472.182096] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36472.182109] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36472.182121] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36472.182151] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36472.182166] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36471.859146] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36471.920474] md1_raid5(2278): WRITE block 7794127504 on sda3 (1 sectors)
<7>[36471.950284] md1_raid5(2278): WRITE block 7794127488 on sda3 (8 sectors)
<7>[36472.182121] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36471.859157] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36471.920482] md1_raid5(2278): WRITE block 7794127504 on sdb3 (1 sectors)
<7>[36471.950290] md1_raid5(2278): WRITE block 7794127488 on sdb3 (8 sectors)
<7>[36472.182151] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36471.859121] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36471.920453] md1_raid5(2278): WRITE block 7794127504 on sdc3 (1 sectors)
<7>[36471.950268] md1_raid5(2278): WRITE block 7794127488 on sdc3 (8 sectors)
<7>[36472.182096] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36472.182166] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36471.859135] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36471.920465] md1_raid5(2278): WRITE block 7794127504 on sdd3 (1 sectors)
<7>[36471.950278] md1_raid5(2278): WRITE block 7794127488 on sdd3 (8 sectors)
<7>[36472.182109] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)

============= 5/10 test, Wed Jan 7 20:57:01 CET 2015 ===============
<7>[36472.182177] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36472.182266] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36472.182273] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36472.214953] md1_raid5(2278): WRITE block 7794127504 on sdc3 (1 sectors)
<7>[36472.214969] md1_raid5(2278): WRITE block 7794127504 on sdd3 (1 sectors)
<7>[36472.214980] md1_raid5(2278): WRITE block 7794127504 on sda3 (1 sectors)
<7>[36472.215011] md1_raid5(2278): WRITE block 7794127504 on sdb3 (1 sectors)
<7>[36472.182266] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36472.214980] md1_raid5(2278): WRITE block 7794127504 on sda3 (1 sectors)
<7>[36472.182273] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36472.215011] md1_raid5(2278): WRITE block 7794127504 on sdb3 (1 sectors)
<7>[36472.214953] md1_raid5(2278): WRITE block 7794127504 on sdc3 (1 sectors)
<7>[36472.182177] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36472.214969] md1_raid5(2278): WRITE block 7794127504 on sdd3 (1 sectors)

============= 6/10 test, Wed Jan 7 20:57:02 CET 2015 ===============
<7>[36476.867448] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36476.867476] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36476.867490] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36476.867501] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36476.892690] md1_raid5(2278): WRITE block 7794127504 on sdc3 (1 sectors)
<7>[36476.892702] md1_raid5(2278): WRITE block 7794127504 on sdd3 (1 sectors)
<7>[36476.892716] md1_raid5(2278): WRITE block 7794127504 on sda3 (1 sectors)
<7>[36476.892724] md1_raid5(2278): WRITE block 7794127504 on sdb3 (1 sectors)
<7>[36476.915205] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36476.915215] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36476.915222] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36476.915229] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36477.140004] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36477.140016] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36477.140029] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36477.140041] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36477.164759] md1_raid5(2278): WRITE block 7794127504 on sdc3 (1 sectors)
<7>[36477.164771] md1_raid5(2278): WRITE block 7794127504 on sd
<7>[36476.867490] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36476.892716] md1_raid5(2278): WRITE block 7794127504 on sda3 (1 sectors)
<7>[36476.915222] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36477.140029] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36476.867501] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36476.892724] md1_raid5(2278): WRITE block 7794127504 on sdb3 (1 sectors)
<7>[36476.915229] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36477.140041] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36476.867448] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36476.892690] md1_raid5(2278): WRITE block 7794127504 on sdc3 (1 sectors)
<7>[36476.915205] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36477.140004] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36477.164759] md1_raid5(2278): WRITE block 7794127504 on sdc3 (1 sectors)
<7>[36476.867476] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36476.892702] md1_raid5(2278): WRITE block 7794127504 on sdd3 (1 sectors)
<7>[36476.915215] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36477.140016] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)

============= 7/10 test, Wed Jan 7 20:57:06 CET 2015 ===============
<7>[36477.164782] md1_raid5(2278): WRITE block 7794127504 on sda3 (1 sectors)
<7>[36477.164792] md1_raid5(2278): WRITE block 7794127504 on sdb3 (1 sectors)
<7>[36477.199430] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36477.199449] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36477.199463] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36477.199476] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36477.164782] md1_raid5(2278): WRITE block 7794127504 on sda3 (1 sectors)
<7>[36477.199463] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36477.164792] md1_raid5(2278): WRITE block 7794127504 on sdb3 (1 sectors)
<7>[36477.199476] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36477.199430] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36477.199449] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)

============= 8/10 test, Wed Jan 7 20:57:07 CET 2015 ===============
<7>[36479.203144] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36479.203159] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36479.203170] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36479.203181] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36479.221322] md1_raid5(2278): WRITE block 7794127504 on sdc3 (1 sectors)
<7>[36479.221335] md1_raid5(2278): WRITE block 7794127504 on sdd3 (1 sectors)
<7>[36479.221345] md1_raid5(2278): WRITE block 7794127504 on sda3 (1 sectors)
<7>[36479.221354] md1_raid5(2278): WRITE block 7794127504 on sdb3 (1 sectors)
<7>[36479.243762] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36479.243769] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36479.243775] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36479.243780] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36479.203170] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36479.221345] md1_raid5(2278): WRITE block 7794127504 on sda3 (1 sectors)
<7>[36479.243775] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36479.203181] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36479.221354] md1_raid5(2278): WRITE block 7794127504 on sdb3 (1 sectors)
<7>[36479.243780] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36479.203144] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36479.221322] md1_raid5(2278): WRITE block 7794127504 on sdc3 (1 sectors)
<7>[36479.243762] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36479.203159] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36479.221335] md1_raid5(2278): WRITE block 7794127504 on sdd3 (1 sectors)
<7>[36479.243769] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)

============= 9/10 test, Wed Jan 7 20:57:09 CET 2015 ===============
<7>[36479.601005] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36479.601020] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36479.601034] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36479.601045] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36479.621331] md1_raid5(2278): WRITE block 7794127504 on sdc3 (1 sectors)
<7>[36479.621340] md1_raid5(2278): WRITE block 7794127504 on sdd3 (1 sectors)
<7>[36479.621349] md1_raid5(2278): WRITE block 7794127504 on sda3 (1 sectors)
<7>[36479.621358] md1_raid5(2278): WRITE block 7794127504 on sdb3 (1 sectors)
<7>[36479.601034] md1_raid5(2278): WRITE block 7794127480 on sda3 (8 sectors)
<7>[36479.621349] md1_raid5(2278): WRITE block 7794127504 on sda3 (1 sectors)
<7>[36479.601045] md1_raid5(2278): WRITE block 7794127480 on sdb3 (8 sectors)
<7>[36479.621358] md1_raid5(2278): WRITE block 7794127504 on sdb3 (1 sectors)
<7>[36479.601005] md1_raid5(2278): WRITE block 7794127480 on sdc3 (8 sectors)
<7>[36479.621331] md1_raid5(2278): WRITE block 7794127504 on sdc3 (1 sectors)
<7>[36479.601020] md1_raid5(2278): WRITE block 7794127480 on sdd3 (8 sectors)
<7>[36479.621340] md1_raid5(2278): WRITE block 7794127504 on sdd3 (1 sectors)
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