On 2010-09-08, at 3:35, Frederik Ferner <[email protected]> wrote: >>> >>> >> > 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...).
That surprises me a bit, unless you have a huge number of files. You should be able to do backups at least at the stat rate (5000/sec = 18M/hr is not unreasonable for almost any MDS). > 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)? Yes, that should work. It always is worthwhile to verify that they are restored correctly, however. You can just start a restore in some temp ext3 filesyste, interrupt it after some files in /ROOT have been restored, and use getfattr to verify the trusted.lov xattrs are restored. Cheers, Andreas _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
