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Length of Scrub Maintenance
Hi Folks,
I know that question was asked at least one time before. But I did not find a suitable answer for that.
I started scrubbing my HDDs on May1st. Now, May 5th 51% are done. Thus itll be do...
It could be related to the quota, so if you can live without that try disabling it.
You can also clear the quota on the volume, not just the share. That will reduce the space information you see on the share page in the web ui.
The log you're looking at just reports the higher-level summary on the scrub - it doesn't show the two steps separately. I've never needed to see those details, so I don't know where they'd be logged. You could look in system.log and kernel.log.
"Maybe download the logs and look at the smart stats (for instance in volume.log)"
I did that and I am overwhelmed that there are so many logs.
Volume.log tells me, I have also a raid 0 ? AFAIK there I have a raid 1 ??
ReadyNAS did some scrubs earlier and it took less time. Here is some output:
"data disk test 2018-02-03 23:00:01 2018-02-04 06:58:17 pass
data scrub 2018-02-04 21:00:02 2018-02-05 22:21:28 pass
data scrub 2018-02-11 21:00:01 2018-02-12 23:39:50 pass
data scrub 2018-02-18 21:00:02 2018-02-19 23:12:22 pass
data defrag 2018-02-20 16:46:54 2018-02-20 18:16:24 completed
data defrag 2018-03-01 00:00:02 2018-03-01 02:39:49 completed
data scrub 2018-03-01 00:00:04 2018-03-02 05:57:02 pass
data disk test 2018-03-08 00:00:02 2018-03-08 09:33:51 pass
data balance 2018-03-15 00:00:01 2018-03-15 00:16:32 completed Done, had to relocate 0 out of 896 chunks
Done, had to relocate
data defrag 2018-04-01 00:00:01 2018-04-01 03:26:49 completed
data scrub 2018-04-01 00:00:08
data disk test 2018-04-08 00:00:02 2018-04-08 08:12:13 pass
data balance 2018-04-15 00:00:01 2018-04-15 00:07:25 completed Done, had to relocate 0 out of 1019 chunks
Done, had to relocate
data scrub 2018-05-01 00:00:02 2018-05-09 21:23:32 pass
data defrag 2018-05-01 00:00:10 2018-05-01 06:36:24 completed
Where do I see whether ists madm/RAID or brtfs?
I have an ISCSI device with 100 GB, NTFS, Thin provisioning, auto- defrag and "never" as snapshot schedule. Sync writes is enabled.
Then there is a share "ASYS" with quota (64 GB) enabled. I could disable the quota as I don't see the advantage in it. This quota might actually be the "problem" because scrub was faster before I created that share.
Share "documents" has weekly smart snapshots enabled.
Thanks,
It could be related to the quota, so if you can live without that try disabling it.
You can also clear the quota on the volume, not just the share. That will reduce the space information you see on the share page in the web ui.
The log you're looking at just reports the higher-level summary on the scrub - it doesn't show the two steps separately. I've never needed to see those details, so I don't know where they'd be logged. You could look in system.log and kernel.log.
Hi,
I disabled quota and am now running a scrub.
Its running for nine hours now and has done 30%. So I expect it to be done in 27hrs, that is 4 pm tomorrow.
Looks like we've found the course.
That leaves one question: Why use quota, when it slows down the system to such an extend?
Chris47111 wrote:
That leaves one question: Why use quota, when it slows down the system to such an extend?
Quota isn't just about storage limits, it also enables some BTRFS features that provide more info on where your space is going (how much in each share's snapshots, etc). So you do lose some useful info when you turn it off.
The slowdown is biggest on the RN100 series (which has the slowest processor and the least memory).
Hi StephenB,
thanks for your reply.
I restarted a scrub and its done by now. It took a bit more thany 24hrs. Seems good for me.
Maybe I'll get a 2xx or 3xx though I don't actually need a new one (but would like to have a new "toy").
Chris47111 wrote:
Maybe I'll get a 2xx or 3xx though I don't actually need a new one (but would like to have a new "toy").
You could do that, and repurpose your RN100 series as a backup NAS.
The 3xx isn't being produced anymore, so your options are RN21x or RN42x. If you are thinking about multigig ethernet in the future, the RN52x and RN62x both have 10GBase-T connections (though of course they are more expensive).
thanks. I'll go for the 422The pricing seems to be more reasonable and the specs sufficient to me.
10 Gig ethernet is nice, but I don't need it by now.
Chris47111
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