Interesting - the ARC seems to do just that at first glance. I may have a look at it this evening. On 11/01/17 11:05, Andrew Holway wrote: > ZFS also does some fun things here if you want to build an SSD & spinning > disk array - http://zfsonlinux.org/ > > > On 11 January 2017 at 11:56, J Martin Rushton < > martinrushton56@xxxxxxxxxxxxxx> wrote: > >> Hmm, don't you just love changing terminology! I've been using HSM >> systems at work since '99. BTW, DMAPI is the Data Management API which >> was a common(ish) extension used by amongst others SGI and IBM. >> >> Back to lvmcache. It looks interesting. I'd earlier dismissed LVM >> since it is block orientated, not file orientated. Probably because my >> mental image is of files migrating to tapes in a silo. >> >> On 11/01/17 10:23, Andrew Holway wrote: >>> HSM also stands for "Hardware security module" >>> >>> Maybe lvmcache would be interesting for you? HSM is more popularly known >> as >>> "tiering". >>> >>> Cheers, >>> >>> Andrew >>> >>> On 11 January 2017 at 11:15, J Martin Rushton < >>> martinrushton56@xxxxxxxxxxxxxx> wrote: >>> >>>> I think there may be some confusion here. By HSM I was referring to >>>> Hierarchical Storage Management, whereby there are multiple levels of >>>> storage (fast+expensive <-> slow+cheap) and files migrate up or down. >>>> Originally it was used to keep data on tape with the metadata residing >>>> on disk though it has been expanded to allow a SAS/SATA hierarchy. Quite >>>> where PKI comes in I'm not sure, unless you are implementing it over an >>>> external network. >>>> >>>> On 11/01/17 10:06, Andrew Holway wrote: >>>>> Dogtag? http://pki.fedoraproject.org/wiki/PKI_Main_Page >>>>> >>>>> On 11 January 2017 at 10:30, J Martin Rushton < >>>>> martinrushton56@xxxxxxxxxxxxxx> wrote: >>>>> >>>>>> Purely from interest, is there any current FOSS implementation of HSM? >>>>>> I note that XFS has dropped support for DMAPI, have other filesystems? >>>>>> >>>>>> Regards, >>>>>> Martin >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> CentOS mailing list >>>>>> CentOS@xxxxxxxxxx >>>>>> https://lists.centos.org/mailman/listinfo/centos >>>>>> >>>>>> >>>>> _______________________________________________ >>>>> CentOS mailing list >>>>> CentOS@xxxxxxxxxx >>>>> https://lists.centos.org/mailman/listinfo/centos >>>>> >>>> >>>> >>>> _______________________________________________ >>>> CentOS mailing list >>>> CentOS@xxxxxxxxxx >>>> https://lists.centos.org/mailman/listinfo/centos >>>> >>>> >>> _______________________________________________ >>> CentOS mailing list >>> CentOS@xxxxxxxxxx >>> https://lists.centos.org/mailman/listinfo/centos >>> >> >> >> _______________________________________________ >> CentOS mailing list >> CentOS@xxxxxxxxxx >> https://lists.centos.org/mailman/listinfo/centos >> >> > _______________________________________________ > CentOS mailing list > CentOS@xxxxxxxxxx > https://lists.centos.org/mailman/listinfo/centos >
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