Re: SLOW SSD's after moving to Bluestore

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On Tue, Dec 11, 2018 at 8:16 PM Mark Kirkwood
<mark.kirkwood@xxxxxxxxxxxxxxx> wrote:
>
> Looks like the 'delaylog' option for xfs is the problem - no longer supported in later kernels. See https://github.com/torvalds/linux/commit/444a702231412e82fb1c09679adc159301e9242c
>
> Offhand I'm not sure where that option is being added (whether ceph-deploy or ceph-volume), but you could just do surgery on whichever one is adding it...

The default flags that ceph-volume uses for mounting XFS are:

    rw,noatime,inode64

These can be overridden by a ceph.conf entry:

    osd_mount_options_xfs=rw,noatime,inode64
>
> regards
>
> Mark
>
>
> On 12/12/18 1:33 PM, Tyler Bishop wrote:
>>
>>
>>> [osci-1001][DEBUG ] Running command: mount -t xfs -o "rw,noatime,noquota,logbsize=256k,logbufs=8,inode64,allocsize=4M,delaylog" /dev/ceph-7b308a5a-a8e9-48aa-86a9-39957dcbd1eb/osd-data-81522145-e31b-4325-83fd-6cfefc1b761f /var/lib/ceph/osd/ceph-1
>>>
>>> [osci-1001][DEBUG ]  stderr: mount: unsupported option format: "rw,noatime,noquota,logbsize=256k,logbufs=8,inode64,allocsize=4M,delaylog"
>
>
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