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Parity Check Extremely Slow

Featured Replies

  • Author

Thx for your answer @itimpi, how can I check if I have other issues with my flash drive ? to my knowledge, this reboot issue is the only problem that I have. (and also the problem that I can't do parity check with my docker and VMs turned on)

  • Community Expert
4 minutes ago, N47H4N said:

and also the problem that I can't do parity check with my docker and VMs turned on

There is no reason that a parity check should stop those working, although their performance might suffer if they try to access files on the main array.

  • Author

and how can I improve the performance ? should I move my parity disks to another SATA controller ? in another PCI-E slot ?

what about those unclean shutdown ?

  • Community Expert
42 minutes ago, N47H4N said:

and how can I improve the performance ? should I move my parity disks to another SATA controller ? in another PCI-E slot ?

The speeds seemed quite reasonable when there was nothing writing to the array drives so not sure that there is an easy fix for this.   I have no idea though why your VMs and/or Docker containers cannot run while a parity check is running as the critical shares for performance (appdata, system) do not seem to have files on the array.

 

43 minutes ago, N47H4N said:

what about those unclean shutdown ?

At the moment I have no further ideas on this I am afraid.   Maybe someone else might chime in with an idea.   Do you have the syslog server enabled so that you have a syslog that covers the whole shutdown and reboot process?

 

It does seem to be the most important issue though as if you could stop this happening so you would only get parity checks when you wanted/scheduled them they would be less painful.

  • Community Expert
5 hours ago, N47H4N said:

what about those unclean shutdown ?

There is a whole sticky thread about that pinned near the top of this General Support subforum

  • Author

I've setup a syslog server

image.thumb.png.98ba1246072a58c79f32e7c03846642f.png

 

It could explain why I always have a parity check when I reboot ?

  • N47H4N changed the title to Parity Check Extremely Slow
  • Community Expert
25 minutes ago, N47H4N said:

It could explain why I always have a parity check when I reboot ?

Yes.

  • 1 month later...
  • Author

Hello all, 

 

It's me again.. like every month when I've to do the automatic parity check :( Once again it isn't working...

image.png.9b651717a6a979c1afcd3cfae6522d63.png

I'm stuck at 95.4 % since almost 2 days...

Any idea why ? thx

nas01-diagnostics-20230405-1954.zip

  • Community Expert
Apr  3 23:32:04 NAS01 kernel: md: sync done. time=257523sec
Apr  3 23:32:04 NAS01 kernel: md: recovery thread: exit status: 0

 

It finished a couple of days ago, which browser are you using?

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