On 20 July 2017 at 12:49, Matthew Vernon <mv3@xxxxxxxxxxxx> wrote: > Hi, > > On 18/07/17 05:08, Marcus Furlong wrote: >> >> On 22 March 2017 at 05:51, Dan van der Ster <dan@xxxxxxxxxxxxxx >> <mailto:dan@xxxxxxxxxxxxxx>> wrote: > > >> Apologies for reviving an old thread, but I figured out what happened >> and never documented it, so I thought an update might be useful. > > > [snip detailed debugging] > > Thanks for getting to the bottom of this. Have you reported it to the sgdisk > authors, please? It'd be good to get it fixed :) I have reported it, and Rod (CC:d) has pointed out that this is probably an XFS filesystem driver bug. Given that this _only_ occurs with XFS, that is probably correct. I have not reported upstream though. As a workaround in sgdisk, I mentioned that these two sgdisk options together (which ceph-deploy uses): --largest-new=1 --set-alignment=2048 could create a partition that uses the largest available block of space, within the constraints of aligning the start _and_ end boundaries of that partition. If it did that, it would workaround the filesystem driver bug. That was what I expected would happen, but it looks like `--set-alignment` only aligns the beginning of the partition. Regards, Marcus. -- Marcus Furlong _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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