System check and harddisk/raid speed tests in a nutshell

Very interesting for me as a Linux noob. THX for your work !

Will print it and do a system check in my N40 L.

I like to propose to use a different tool for benchmarking - called dt.

It is kind of a dd, but gives you the data directly as an analysis and output.

You can find it here (very old nowadays) with a linux intel compiled version of it:
http://www.scsifaq.org/RMiller_Tools/dt.html

I have written a test procedure somewhere in the RAID section.

Regards
Ser

Is it possible to raise a problem for solution on this post? or should I raise a new post?
The issue is a hard disk that was on my omv before - my parity drive.
That omv crashed due to the pool vanishing.
I reinstalled and now I have attached all the disks and everything was OK initially but lately, one hard disk had vanished.
All my external hard disks are linked via two JBOD via a sata port.
I have tried to mount it using mount -a but it does not appear.
I them amended the config.xml file and ran omv-mkconf fstab
It still does not appear so I found this thread and ran

egrep 'ata[0-9]\.|SATA link up' /var/log/dmesg

and got this output:

***see attachment***
I am sorry but I don't understand what this output is saying apart from the fact that it has issues.
The missing disk is this:

Zitat

<mntent>
<uuid>abc0d348-e933-4dd9-977f-491cd0fd33b3</uuid>
<fsname>74cc1a04-7b0b-4a00-8fe1-3f2c98538ed6</fsname>
<dir>/media/74cc1a04-7b0b-4a00-8fe1-3f2c98538ed6</dir>
<type>ext4</type>
<opts>defaults,nofail,user_xattr,noexec,usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0,acl</opts>
<freq>0</freq>
<passno>2</passno>
<hidden>0</hidden>
</mntent>

Alles anzeigen

What can I do to recover this disk and why can the sata port read three of four disks? I don't understand.
The only link i found was this and this is 2009. Surely the issue will have been corrected? https://bugzilla.kernel.org/show_bug.cgi?id=13551
Please help!