Hi Bernd, Frederik Ferner wrote: > Bernd Schubert wrote: >> On Thursday, September 02, 2010, Frederik Ferner wrote: >>> we are currently reviewing our backup policy for our Lustre file system >>> as backups of the MDT are taking longer and longer. > >> Yes, that is due to the size-on-mds feature, which was introduced into >> 1.6.7.2. See bug >> >> https://bugzilla.lustre.org/show_bug.cgi?id=21376 >> >> It has a patch, that also got accepted in upstream tar last week. You may >> find >> updated RHEL5 tar packages on my home page: > > Thanks, I'll give that a go.
I can now report that the backup was faster using this new version of tar. It is still not really fast, though. the backup still takes nearly 24h (that is running getfattr followed by tar...). > (Any chance of adding the SRPM to your download page?) Thanks for the tar file. I seem to remember that the separate getfattr call during the backup was not required anymore with the new version of tar. A quick look in the code seems to confirm this, at least it seems to be able to store the "trusted" extended attributes. Can you confirm if 'tar --xattr --acl' on the ldiskfs mounted MDT is sufficient to store all required extended attributes (and ACLs)? Thanks, Frederik -- Frederik Ferner Computer Systems Administrator phone: +44 1235 77 8624 Diamond Light Source Ltd. mob: +44 7917 08 5110 (Apologies in advance for the lines below. Some bits are a legal requirement and I have no control over them.) _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
