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| author | Sage Weil <sage@newdream.net> | 2010-03-11 15:39:30 -0800 |
|---|---|---|
| committer | Sage Weil <sage@newdream.net> | 2010-03-11 15:39:30 -0800 |
| commit | 6c88cf353ac1833756725a7f5e6a0e802595bee5 (patch) | |
| tree | 31aac47d4608cd483534ec68a22b5462764c2d2b /src/TODO | |
| parent | 0e44c85705bc6e9474620e08d36ab22afc216bcc (diff) | |
| download | ceph-6c88cf353ac1833756725a7f5e6a0e802595bee5.tar.gz | |
mds: detach mdsdir inode from hierarchy
Attaching mdsdir to the root hierarchy means that random mds X
can't push replicas of everything needed for mds Y to reach a
stray item, because Y may not have the /.ceph/mds# dentries and
inode. So detach myin from the hierarchy.
This simplifies startup/mkfs somewhat because non-root mds's
don't have to traverse through /.ceph.
We can still make it reachable via /.ceph/mds# with a remote
dentry (although we haven't done that yet).
MDS stopping is currently broken, since we can't export the stray
dir any more (it's auth mds fixed).
Diffstat (limited to 'src/TODO')
| -rw-r--r-- | src/TODO | 3 |
1 files changed, 3 insertions, 0 deletions
@@ -65,6 +65,9 @@ bugs - rm -r failure (on kernel tree) - dbench 1, restart mds (may take a few times), dbench will error out. +- multi-mds: the stray dir should be it's own root/base (with /.ceph/mds$n/stray a remote dentry?) + ...otherwise mds X can't always push a stray replica to Y and have it fully linked into the hierarchical cache + - multi-mds, dbench 10, null dn is migrated, linked on new node, but remains null on old mds. a little later we crash when we unlink due to the discrepancy. mds/MDCache.cc: In function 'void MDCache::handle_dentry_unlink(MDentryUnlink*)': mds/MDCache.cc:8057: FAILED assert(dnl->is_remote()) |