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by **Jocko** » Tue Apr 21, 2015 8:48 pm

If in mdstat, you have the recovery line, then it will be ok...

by **b1gnas** » Tue Apr 21, 2015 8:56 pm

mmmh

Code: Select all: root@fvdwsl-base:/ # cat /proc/mdstat Personalities : [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 : active raid5 sde8[4](F) sdd8[2] sdc8[5](F) sdb8[0] 2920423872 blocks level 5, 64k chunk, algorithm 2 [4/2] [U_U_] unused devices: <none>

by **Jocko** » Tue Apr 21, 2015 9:11 pm

:hairpull
What said mke2fs ?

and

Code: Select all: mdadm --detail /dev/md0

by **b1gnas** » Wed Apr 22, 2015 6:35 am

tried a second time. When i rebooted i had 2 red disk led on the back

mke2fs is blocked here

Code: Select all: root@fvdwsl-base:/ # mke2fs -t ext3 -j -m 1 /dev/md0 mke2fs 1.42.11 (09-Jul-2014) Creating filesystem with 730105968 4k blocks and 182534144 inodes Filesystem UUID: a5b99f53-ed61-4faf-9090-05856974c08f Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, 102400000, 214990848, 512000000, 550731776, 644972544 Allocating group tables: done Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information:

by **b1gnas** » Wed Apr 22, 2015 6:50 am

deleted the raid and rebooted, but i always have two red disk led sda and sdd i suppose

by **fvdw** » Wed Apr 22, 2015 7:13 am

probably yes, but looking from the back which led is red ?
why don't you post the output of

Code: Select all: mdadm --detail /dev/md0

?

ps mke2fs can take a while to finish

To see if the kernel has seen all your diks please gain once more the output of dmesg command

by **Jocko** » Wed Apr 22, 2015 7:25 am

After setting a raid, when you reboot if a disk has a fail status, the related RED LED is on.

Note: and when the raid has a recovery status, all LED of the related disks are blinking red/blue.

So with your previous posts, I think it is right to have two red LED.

Note2: to get a raid5 you need at least to have 3 clean devices. Currently, your raid status is 2 clean devices and 2 fail devices. It is why your raid don't have the recovery status and you can not format it (it fails to save the superblocks in the root directory of the file system)

With your last trial, the two fail disks still are they the Hitachi disks ?

by **b1gnas** » Wed Apr 22, 2015 1:58 pm

redone all from the beginnig, deleted all partitions, repartioned all 4 disks, so all back led was blue.

Now creating again the raid, formatting and it is blocked here

Code: Select all: root@fvdwsl-base:/ # mdadm --create /dev/md0 --level=5 --assume-clean --raid-dev ices=4 /dev/sdb8 /dev/sdc8 /dev/sdd8 /dev/sde8 mdadm: /dev/sdb8 appears to contain an ext2fs file system size=973474740K mtime=Wed Apr 22 17:24:38 2015 mdadm: /dev/sdc8 appears to contain an ext2fs file system size=973474740K mtime=Wed Apr 22 17:24:38 2015 mdadm: /dev/sdd8 appears to contain an ext2fs file system size=973474740K mtime=Wed Apr 22 17:24:38 2015 mdadm: /dev/sde8 appears to contain an ext2fs file system size=973474740K mtime=Wed Apr 22 17:24:38 2015 Continue creating array? y mdadm: array /dev/md0 started. root@fvdwsl-base:/ # cat /etc/mdadm.0 > /etc/mdadm.conf root@fvdwsl-base:/ # mdadm --detail --scan >> /etc/mdadm.conf root@fvdwsl-base:/ # cat /proc/mdstat Personalities : [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 : active raid5 sde8[3] sdd8[2] sdc8[1] sdb8[0] 2920423872 blocks level 5, 64k chunk, algorithm 2 [4/4] [UUUU] unused devices: <none> root@fvdwsl-base:/ # mke2fs -t ext3 -j -m 1 /dev/md0 mke2fs 1.42.11 (09-Jul-2014) /dev/md0 contains a ext3 file system last mounted on Wed Apr 22 17:24:38 2015 Proceed anyway? (y,n) y Creating filesystem with 730105968 4k blocks and 182534144 inodes Filesystem UUID: 4d10ab1a-9807-4906-bdfe-c9a85309e575 Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968, 102400000, 214990848, 512000000, 550731776, 644972544 Allocating group tables: done Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information:

In the while from another ssh session

Code: Select all: root@fvdwsl-base:/ # mdadm --detail /dev/md0 /dev/md0: Version : 00.90.03 Creation Time : Wed Apr 22 17:32:04 2015 Raid Level : raid5 Array Size : 2920423872 (2785.13 GiB 2990.51 GB) Device Size : 973474624 (928.38 GiB 996.84 GB) Raid Devices : 4 Total Devices : 4 Preferred Minor : 0 Persistence : Superblock is persistent Update Time : Wed Apr 22 17:33:33 2015 State : active, degraded Active Devices : 2 Working Devices : 2 Failed Devices : 2 Spare Devices : 0 Layout : left-symmetric Chunk Size : 64K UUID : cacb412e:2042a25e:dffee99d:ebaa035e Events : 0.4 Number Major Minor RaidDevice State 0 8 56 0 active sync /dev/sdb8 1 0 0 1 removed 2 0 0 2 removed 3 8 8 3 active sync /dev/sde8 4 8 24 - faulty spare /dev/sdd8 5 8 40 - faulty spare /dev/sdc8

sdc and sdd are the hitachi disks

dmeg is full of these errors, i can't post all the output

Code: Select all: root@fvdwsl-base:/ # dmesg lost page write due to I/O error on md0 quiet_error: 68597 callbacks suppressed Buffer I/O error on device md0, logical block 314572942 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 314572926 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 314572943 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 314572927 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 314572928 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 314572929 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 314572930 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 314572931 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 314572932 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 314572933 lost page write due to I/O error on md0 quiet_error: 68743 callbacks suppressed Buffer I/O error on device md0, logical block 318963983 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 318963984 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 318964000 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 318964016 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 318963985 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 318964001 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 318964017 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 318963986 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 318964002 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 318964018 lost page write due to I/O error on md0 quiet_error: 68895 callbacks suppressed Buffer I/O error on device md0, logical block 323387464 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 323387448 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 323387465 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 323387449 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 323387466 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 323387450 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 323387467 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 323387451 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 323387468 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 323387452 lost page write due to I/O error on md0 quiet_error: 68606 callbacks suppressed Buffer I/O error on device md0, logical block 327778368 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 327778384 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 327778400 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 327778369 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 327778385 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 327778401 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 327778370 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 327778386 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 327778402 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 327778371 lost page write due to I/O error on md0 quiet_error: 67905 callbacks suppressed Buffer I/O error on device md0, logical block 332104075 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 332104076 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 332104077 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 332104078 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 332104079 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 332104080 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 332104096 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 332104112 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 332104081 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 332104097 lost page write due to I/O error on md0 quiet_error: 68457 callbacks suppressed Buffer I/O error on device md0, logical block 336494862 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 336494878 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 336494846 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 336494863 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 336494879 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 336494847 lost page write due to I/O error on md0 Buffer I/O error on device md0, logical block 336494848 lost page write due to I/O error on md0

This time all leds are blue

by **Jocko** » Wed Apr 22, 2015 2:53 pm

Thank for this posts.

b1gnas wrote:This time all leds are blue

It is normal because the raid monitor is not running (need to reboot to start it) and so the LED status is not yet updated.

b1gnas wrote:sdc and sdd are the hitachi disks

As at the beginning it was already these disks which have a failure status, I am more and more convinced that your issue is these disks even if SMART returns no error about them.

if you are able to use another disk even with a small size we can check it.

To do it create a partition table on it and replace one Hitachi disk. Then try to create a raid5 with 3 devices : 2 Seagate disks and with new disk.

If you can do it then that means that there is an issue with these 2 disks and need to find how to repair them.

by **fvdw** » Wed Apr 22, 2015 9:09 pm

seems those hitachi disks have a problem

I suggest that you format the partitions in ext3 and then run fsck on them and see what it mentions

fsck /dev/sdd8
fsck /dev/sdc8

(the partitions should be unmounted first before formatting and running fsck)

ps instead of raid5 you could try if you succeed to build a raid1 array of these 4 disks

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