Hi Jakob, Sorry for not replying earlier. Missed reading your email completely..:( PVFS2 should work with any conventional backup software (tivoli, tar gzip) unlike PVFS1 The FAQ sheds some light on this.. http://www.pvfs.org/pvfs2-faq.html#SECTION000101000000000000000
If your meta data is stored on shared storage, you could configure failover with Linux-HA and have the failed manager taken over by another manager. If it is stored on a local disk and if the disk is damaged (and you don't have a way of rebuilding it such as with RAID 5) all the MD on that drive is gone unfortunately.. One workaround that is to configure DRBD to emulate a shared storage over TCP/IP. Then format a file system and pvfs2 volume on top of that... http://www.parl.clemson.edu/pipermail/pvfs2-developers/2005-June/001310.html If one I/O node is down, only 1/10th of your file data will be unavailable until the node comes back online. If its disk is toast, then 1/10th of all file's data will be lost I am afraid since we only do striping. If you only care about availability, then I guess we need to add some extra code/functionality to mark that certain servers are off-line to remember not to make use of them for future I/O or meta data operations.. This should be feasible to do, I think.. Hope this answers your questions, thanks, Murali On 1/15/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
hi I am pvfs 1 user but this question in relevant also to pvfs 2. I want to know if there are backup options. for example what would happen if my mgr server is damaged. can i rebuild the files? another scenario: if my topology contain 10 i/o nodes and each file is strip between all the 10 nodes. if one node is damaged does all my data will be lost? thanks. Jakob. _______________________________________________ Pvfs2-users mailing list [email protected] http://www.beowulf-underground.org/mailman/listinfo/pvfs2-users
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