On 26/11/2018 11.05, Yan, Zheng wrote: > On Mon, Nov 26, 2018 at 4:30 AM Hector Martin <hector@xxxxxxxxxxxxxx> wrote: >> >> On 26/11/2018 00.19, Paul Emmerich wrote: >>> No, wait. Which system did kernel panic? Your CephFS client running rsync? >>> In this case this would be expected behavior because rsync doesn't >>> sync on every block and you lost your file system cache. >> >> It was all on the same system. So is it expected behavior for size >> metadata to be updated non-atomically with respect to file contents >> being written when using the CephFS kernel client? I.e. after appending >> data to the file, the metadata in CephFS is updated to reflect the new >> size but the data remains in the page cache until those pages are flushed? >> > > Yes, it's expected behavior. We haven't implement ordered write > (data=ordered mount option of ext4) Makes sense, thanks for confirming. Good to know it's a client issue then (I'd be more worried if what caused this was the Ceph server side stack). -- Hector Martin (hector@xxxxxxxxxxxxxx) Public Key: https://mrcn.st/pub _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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