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 at btinternet.com> 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 at btinternet.com> 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 at centos.org >>>> https://lists.centos.org/mailman/listinfo/centos >>>> >>>> >>> _______________________________________________ >>> CentOS mailing list >>> CentOS at centos.org >>> https://lists.centos.org/mailman/listinfo/centos >>> >> >> >> _______________________________________________ >> CentOS mailing list >> CentOS at centos.org >> https://lists.centos.org/mailman/listinfo/centos >> >> > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos >-------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 836 bytes Desc: OpenPGP digital signature URL: <http://lists.centos.org/pipermail/centos/attachments/20170111/05004e90/attachment-0001.sig>
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 at btinternet.com> 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 at btinternet.com> 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 at btinternet.com> 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 at centos.org > >>>> https://lists.centos.org/mailman/listinfo/centos > >>>> > >>>> > >>> _______________________________________________ > >>> CentOS mailing list > >>> CentOS at centos.org > >>> https://lists.centos.org/mailman/listinfo/centos > >>> > >> > >> > >> _______________________________________________ > >> CentOS mailing list > >> CentOS at centos.org > >> https://lists.centos.org/mailman/listinfo/centos > >> > >> > > _______________________________________________ > > CentOS mailing list > > CentOS at centos.org > > https://lists.centos.org/mailman/listinfo/centos > > > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos > >
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 at btinternet.com> 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 at btinternet.com> 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 at btinternet.com> 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 at centos.org >>>>>> https://lists.centos.org/mailman/listinfo/centos >>>>>> >>>>>> >>>>> _______________________________________________ >>>>> CentOS mailing list >>>>> CentOS at centos.org >>>>> https://lists.centos.org/mailman/listinfo/centos >>>>> >>>> >>>> >>>> _______________________________________________ >>>> CentOS mailing list >>>> CentOS at centos.org >>>> https://lists.centos.org/mailman/listinfo/centos >>>> >>>> >>> _______________________________________________ >>> CentOS mailing list >>> CentOS at centos.org >>> https://lists.centos.org/mailman/listinfo/centos >>> >> >> >> _______________________________________________ >> CentOS mailing list >> CentOS at centos.org >> https://lists.centos.org/mailman/listinfo/centos >> >> > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos >-------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 836 bytes Desc: OpenPGP digital signature URL: <http://lists.centos.org/pipermail/centos/attachments/20170111/71d80395/attachment-0001.sig>