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inspired by the addition to
http://ceph.newdream.net/wiki/Snapshots about the snapdirname
option i've created a patch for the mount.ceph manpage
- Thomas
Signed-off-by: Sage Weil <sage@newdream.net>
This should avoid
#0 0x00007f41b1a18a75 in raise () from /lib/libc.so.6
#1 0x00007f41b1a1c5c0 in abort () from /lib/libc.so.6
#2 0x00007f41b22cd8e5 in __gnu_cxx::__verbose_terminate_handler() () from /usr/lib/libstdc++.so.6
#3 0x00007f41b22cbd16 in ?? () from /usr/lib/libstdc++.so.6
#4 0x00007f41b22cbd43 in std::terminate() () from /usr/lib/libstdc++.so.6
#5 0x00007f41b22cbe3e in __cxa_throw () from /usr/lib/libstdc++.so.6
#6 0x00000000005b39f8 in ceph::__ceph_assert_fail (assertion=0x5ec3b2 "seq >= last_committed_seq", file=<value optimized out>, line=711, func=<value optimized out>) at common/assert.cc:30
#7 0x00000000005649e1 in FileJournal::committed_thru (this=0x1116310, seq=0) at os/FileJournal.cc:711
#8 0x000000000055d265 in JournalingObjectStore::commit_finish (this=0x1125740) at os/JournalingObjectStore.cc:186
#9 0x00000000005543f3 in FileStore::sync_entry (this=0x1125740) at os/FileStore.cc:1714
#10 0x00000000004ef93d in FileStore::SyncThread::entry() ()
#11 0x0000000000469a4a in Thread::_entry_func (arg=0x6315) at ./common/Thread.h:39
#12 0x00007f41b28ab9ca in start_thread () from /lib/libpthread.so.0
#13 0x00007f41b1acb6cd in clone () from /lib/libc.so.6
#14 0x0000000000000000 in ?? ()
Signed-off-by: Sage Weil <sage@newdream.net>
- only need to do it once, by connecting to a random monitor, not for
each monitor
- not sure we should try it every time we start the monitor for all time,
as opposed to once after mkfs, or whenever the admin chooses to load
new classes
We need the store in a consistent state on commit, which means flushing
transactions such that we have all ops <= a given seq applied. That is
handled by the commit_start()/commit_started() pair, but will only include
ops in the FileStore queue if we op_start when it is initially queued.
Which is exactly what we want, because the queue can reorder things, so
stopping just currently-being-applied updates will only keep transactions
atomic but not ordered.
Yup!
The Connection has a Pipe pointer to facilitate
send_message(Message, Connection)
but the reaper() clears that pointer when tearing down old pipes. This
leads to a race in which submit_message dereferences the old Pipe pointer.
Instead, make Pipe ref counted, and only submit_message() if we get a
valid Pipe reference. This fixes races between send_message() and
reaper() (as well as any use of the Connection after the pipe is closed).
Signed-off-by: Sage Weil <sage@newdream.net>
A couple of preprocessor symbols for include guards tampered with the reserved namespace.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Sage Weil <sage@newdream.net>
A leading underscore was moved to the back of a data structure identifier.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Sage Weil <sage@newdream.net>
