Re: [Octopus] Beware the on-disk conversion

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



And high memory usage is present for quick-fix after conversion as well, isn't it?

The same tens of GBs?


On 4/2/2020 4:13 PM, Jack wrote:
(fsck / quick-fix, same story)

On 4/2/20 3:12 PM, Jack wrote:
Hi,

A simple fsck eats the same amount of memory

Cluster usage: rbd with a bit of rgw

Here is the ceph df detail
All OSDs are single rusty devices

On 4/2/20 2:19 PM, Igor Fedotov wrote:
Hi Jack,

could you please try the following - stop one of already converted OSDs
and do a quick-fix/fsck/repair against it using ceph_bluestore_tool:

ceph-bluestore-tool --path <path to osd> --command quick-fix|fsck|repair

Does it cause similar memory usage?

You can stop experimenting if quick-fix reproduces the issue.


Also could you please describe your cluster and its usage a bit: what's
the usage: rgw/rbd/cephfs? If possible - please share 'ceph df detail'
output, do you have standalone DB volume at SSD/NVMe?

Thanks,

Igor


On 4/1/2020 6:28 PM, Jack wrote:
Hi,

As the upgrade documentation tells:
Note that the first time each OSD starts, it will do a format
conversion to improve the accounting for “omap” data. This may
take a few minutes to as much as a few hours (for an HDD with lots
of omap data). You can disable this automatic conversion with:
What the documentation does not say is that this process takes a lot of
memory

I am upgrading a rusty cluster from Nautilus, you can check out the ram
consumption as attachment

First, we have a 3TB osd conversion: it tooks ~15min, and 19GB of memory

Then, we have a larger 6TB osd conversion: it tooks more than 2 hours,
and 35GB of memory

Finally, you have the largest 10TB osd: only 1H15, but 52GB of memory


_______________________________________________
ceph-users mailing list -- ceph-users@xxxxxxx
To unsubscribe send an email to ceph-users-leave@xxxxxxx
_______________________________________________
ceph-users mailing list -- ceph-users@xxxxxxx
To unsubscribe send an email to ceph-users-leave@xxxxxxx




[Index of Archives]     [Information on CEPH]     [Linux Filesystem Development]     [Ceph Development]     [Ceph Large]     [Ceph Dev]     [Linux USB Development]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [xfs]


  Powered by Linux