automatic RAID 5 recovery after disk failure in old TS 659?

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MichaelS2
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automatic RAID 5 recovery after disk failure in old TS 659?

Post by MichaelS2 » Mon Sep 14, 2020 7:52 pm

hello,
in my old 659 a HDD showed an error. the system is 9-10 years old.

As I did not see any button for 'disk replacement' in the disk maintenance section, I just removed the damaged disk and replaced with a similar WD Black 2 TB disk.

Should the system automatically rebuild the RAID 5 ?

the disk exchange was three days ago and the system is still degraded und the red status light blinking.

best regards,
Michael

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dolbyman
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Re: automatic RAID 5 recovery after disk failure in old TS 659?

Post by dolbyman » Mon Sep 14, 2020 9:21 pm

if the array can be repaired, a hotswap(while running) should have caused a rebuild

unless there is more disks with issues

MichaelS2
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Re: automatic RAID 5 recovery after disk failure in old TS 659?

Post by MichaelS2 » Tue Sep 15, 2020 12:01 am

there should habe been only one damaged disk (according to the disk status report).

how long might a rebuild take? several days?

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dolbyman
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Re: automatic RAID 5 recovery after disk failure in old TS 659?

Post by dolbyman » Tue Sep 15, 2020 12:03 am

depends on disk size and throughput of the other drives. and what sync speed setting is chosen (sync priority,medium,service priority)

can you reach the NAS via SSH ?

MichaelS2
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Re: automatic RAID 5 recovery after disk failure in old TS 659?

Post by MichaelS2 » Tue Sep 15, 2020 2:49 pm

Re SSH - I am not sure; I am not famililiar with SSH.

but strange - when I switch to the respective new disk in HDD Smart, the whole admin surface exits. I am also not sure whether the exchanged disk has the correct disk type (should be EXT4?).

How do I find out more (in the admin surface)? firmware version 3.2.3
Volume Management and RAID Management opens very slowly, details hardly at all.

some content from the system log:

All events
Clear
Save
Type Date Time Users Source IP Computer name Content
2020-09-11 14:57:45 System 127.0.0.1 localhost Drive 3 plugged in.
2020-09-11 14:51:55 System 127.0.0.1 localhost [RAID5 Disk Volume: Drive 1 2 3 4 5 6] RAID device in degraded mode.
2020-09-11 14:50:18 System 127.0.0.1 localhost [RAID5 Disk Volume: Drive 1 2 3 4 5 6] Drive 3 removed.
2020-09-11 14:49:51 System 127.0.0.1 localhost Drive 3 plugged out.
2020-09-10 13:09:55 System 127.0.0.1 localhost [RAID5 Disk Volume: Drive 1 2 3 4 5 6] Drive 3 failed.
2020-09-10 13:09:26 System 127.0.0.1 localhost [RAID5 Disk Volume: Drive 1 2 3 4 5 6] RAID device in degraded mode.
2020-09-10 13:08:16 System 127.0.0.1 localhost [RAID5 Disk Volume: Drive 1 2 3 4 5 6] Drive 3 removed.
2020-09-07 20:39:53 System 192.168.1.124 localhost [HDD SMART] HDD 3 Quick Test started.
2020-09-07 20:39:45 System 127.0.0.1 localhost [HDD SMART] HDD 3 Quick Test result: Completed: unknown failure.
2020-09-07 20:38:41 System 192.168.1.124 localhost [HDD SMART] HDD 3 Quick Test started.

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dolbyman
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Re: automatic RAID 5 recovery after disk failure in old TS 659?

Post by dolbyman » Tue Sep 15, 2020 8:10 pm

there is plenty of guides for ssh..and its very easy

download putty and enter nas ip
the your admin user and pass

once in do

Code: Select all

cat /proc/mdstat 
post the results back in code tags

MichaelS2
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Re: automatic RAID 5 recovery after disk failure in old TS 659?

Post by MichaelS2 » Wed Sep 16, 2020 12:35 am

here you are;
[~] # cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath]
md0 : active raid5 sda3[0] sdf3[5] sde3[4] sdd3[3] sdb3[1]
9759728000 blocks level 5, 64k chunk, algorithm 2 [6/5] [UU_UUU]

md6 : active raid1 sdc2[2](S) sdf2[3](S) sde2[4](S) sdd2[5](S) sdb2[1] sda2[0]
530048 blocks [2/2] [UU]

md13 : active raid1 sdc4[3](S) sda4[0] sdd4[2] sde4[4](S) sdf4[5](S) sdb4[1]
458880 blocks [3/3] [UUU]
bitmap: 1/57 pages [4KB], 4KB chunk

md9 : active raid1 sdc1[2] sda1[0] sdf1[5] sde1[4] sdd1[3] sdb1[1]
530048 blocks [6/6] [UUUUUU]
bitmap: 3/65 pages [12KB], 4KB chunk

unused devices: <none>

any learnings?

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dolbyman
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Re: automatic RAID 5 recovery after disk failure in old TS 659?

Post by dolbyman » Wed Sep 16, 2020 12:53 am

it's degraded (md0), but not rebuilding

Pull the drive again, format it, then stick it back in and see if the rebuild starts

MichaelS2
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Re: automatic RAID 5 recovery after disk failure in old TS 659?

Post by MichaelS2 » Wed Sep 16, 2020 1:10 am

where/how to format it? I believe that I do not have a cable for connecting it somewhere?

MichaelS2
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Re: automatic RAID 5 recovery after disk failure in old TS 659?

Post by MichaelS2 » Wed Sep 16, 2020 1:13 am

MichaelS2 wrote:
Wed Sep 16, 2020 1:10 am
where/how to format it? I believe that I do not have a cable for connecting it somewhere?
only half truth.

I found a logilink USB to IDE/SATA Adapter. should work, wouldn't it?

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dolbyman
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Re: automatic RAID 5 recovery after disk failure in old TS 659?

Post by dolbyman » Wed Sep 16, 2020 1:25 am

if that adapter supports the full drive size (some older ones cap out at 2 or 4 TB)

MichaelS2
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Re: automatic RAID 5 recovery after disk failure in old TS 659?

Post by MichaelS2 » Wed Sep 16, 2020 2:44 am

dolbyman wrote:
Wed Sep 16, 2020 1:25 am
if that adapter supports the full drive size (some older ones cap out at 2 or 4 TB)
I find the disk in my Win 10.

which free Disk Management tool in Win for formatting in EXT3?

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dolbyman
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Re: automatic RAID 5 recovery after disk failure in old TS 659?

Post by dolbyman » Wed Sep 16, 2020 2:45 am

just use diskpart and clear the disk

MichaelS2
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Re: automatic RAID 5 recovery after disk failure in old TS 659?

Post by MichaelS2 » Wed Sep 16, 2020 3:14 am

dolbyman wrote:
Wed Sep 16, 2020 2:45 am
just use diskpart and clear the disk
may Diskpart format a disk in EXT3 format? what I have read rather only NTFS?

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dolbyman
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Re: automatic RAID 5 recovery after disk failure in old TS 659?

Post by dolbyman » Wed Sep 16, 2020 3:39 am

doesn't matter whats on the disk after, you just want to clean it to be introduced as new drive on the NAS

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