This sounds more like a drbd + nfs or similar solution. Two "stand-alone" file servers that are running the block-level duplication between the servers (essentially a RAID-1). If you're truely serious, you'd throw in some of the linux virtual server stuff that watches each other and takes over the IP of a failed server. Thus, with a stateless protocol like NFS, it could in theory work.
That said, I have never actually done this, and I do not know what kinds of guarantees one could extract against data loss when a server fails, etc. I've not heard of such a solution (other than some expensive hardware-based fileserver companies such as NetApp and the like). On Thu, May 17, 2012 at 9:00 AM, Becky Ligon <[email protected]> wrote: > I am personally not aware of other parallel filesystems that perform as you > want, but maybe others on this list do. > > Becky > > > On Thu, May 17, 2012 at 9:20 AM, Thurein Aung <[email protected]> > wrote: >> >> Hi Sir, >> Really thanks for your prompt reply. Do u have any idea of which >> filesystem is capable of it? >> What I want is - >> When both servers are online, I/O must be parallel. When one node dies, >> filesystem must be still acccessible with or without human interaction. >> >> If it is out of your interest, you may ignore my question. >> >> Regards, >> >> On May 17, 2012 9:13 PM, "Becky Ligon" <[email protected]> wrote: >>> >>> Thurein: >>> >>> In the current release of OrangeFS, you cannot remove a server from your >>> filesystem without an outage. To completely remove a server, the data in >>> your filesystem will have to be copied out, the filesystem reinitialized >>> with the new config file, and then copied in. To replace a server, the data >>> and metadata stored on that server can be manually copied over to another >>> server. Reinitialization is not needed in this case. If the new server >>> retains the hostname of the old server, then the config file won't have to >>> change. >>> >>> The OrangeFS team is developing a methodology that will allow you to >>> remove a server while the filesystem is running. It is high on our priority >>> list. >>> >>> Hope this helps, >>> Becky Ligon >>> >>> On Thu, May 17, 2012 at 4:24 AM, Thurein Aung <[email protected]> >>> wrote: >>>> >>>> Hi All, >>>> I am quite new to this PVFS things. Please kindly pardon me with any >>>> mistake. >>>> I have 2 x pvfs servers running. Is it possible to remove 1 of pvfs >>>> server properly? If yes, how? >>>> >>>> Thanks in advance. >>>> Thurein Aung >>>> System Integration Engineer >>>> Cxrus Solutions Pte Ltd >>>> 211 Henderson Road >>>> #09-01 Singapore 159552 >>>> >>>> >>>> _______________________________________________ >>>> Pvfs2-users mailing list >>>> [email protected] >>>> http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users >>>> >>> >>> >>> >>> -- >>> Becky Ligon >>> OrangeFS Support and Development >>> Omnibond Systems >>> Anderson, South Carolina >>> >>> > > > > -- > Becky Ligon > OrangeFS Support and Development > Omnibond Systems > Anderson, South Carolina > > > > _______________________________________________ > Pvfs2-users mailing list > [email protected] > http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users > _______________________________________________ Pvfs2-users mailing list [email protected] http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users
