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  1. 23 3月, 2010 11 次提交
    • S
      ceph: rename r_sent_stamp r_stamp · 3dd72fc0
      由 Sage Weil 提交于 
      Make variable name slightly more generic, since it will (soon)
reflect either the time the request was sent OR the time it was
last determined to be still retrying.
Signed-off-by: NSage Weil <sage@newdream.net>
      3dd72fc0
    • S
      ceph: fix connection fault con_work reentrancy problem · 3c3f2e32
      由 Sage Weil 提交于 
      The messenger fault was clearing the BUSY bit, for reasons unclear.  This
made it possible for the con->ops->fault function to reopen the connection,
and requeue work in the workqueue--even though the current thread was
already in con_work.

This avoids a problem where the client busy loops with connection failures
on an unreachable OSD, but doesn't address the root cause of that problem.
Signed-off-by: NSage Weil <sage@newdream.net>
      3c3f2e32
    • S
      ceph: prevent dup stale messages to console for restarting mds · e4cb4cb8
      由 Sage Weil 提交于 
      Prevent duplicate 'mds0 caps stale' message from spamming the console every
few seconds while the MDS restarts.  Set s_renew_requested earlier, so that
we only print the message once, even if we don't send an actual request.
Signed-off-by: NSage Weil <sage@newdream.net>
      e4cb4cb8
    • S
      ceph: fix pg pool decoding from incremental osdmap update · efd7576b
      由 Sage Weil 提交于 
      The incremental map decoding of pg pool updates wasn't skipping
the snaps and removed_snaps vectors.  This caused osd requests
to stall when pool snapshots were created or fs snapshots were
deleted.  Use a common helper for full and incremental map
decoders that decodes pools properly.
Signed-off-by: NSage Weil <sage@newdream.net>
      efd7576b
    • S
      ceph: fix mds sync() race with completing requests · 80fc7314
      由 Sage Weil 提交于 
      The wait_unsafe_requests() helper dropped the mdsc mutex to wait
for each request to complete, and then examined r_node to get the
next request after retaking the lock.  But the request completion
removes the request from the tree, so r_node was always undefined
at this point.  Since it's a small race, it usually led to a
valid request, but not always.  The result was an occasional
crash in rb_next() while dereferencing node->rb_left.

Fix this by clearing the rb_node when removing the request from
the request tree, and not walking off into the weeds when we
are done waiting for a request.  Since the request we waited on
will _always_ be out of the request tree, take a ref on the next
request, in the hopes that it won't be.  But if it is, it's ok:
we can start over from the beginning (and traverse over older read
requests again).
Signed-off-by: NSage Weil <sage@newdream.net>
      80fc7314
    • S
      ceph: only release unused caps with mds requests · 916623da
      由 Sage Weil 提交于 
      We were releasing used caps (e.g. FILE_CACHE) from encode_inode_release
with MDS requests (e.g. setattr).  We don't carry refs on most caps, so
this code worked most of the time, but for setattr (utimes) we try to
drop Fscr.

This causes cap state to get slightly out of sync with reality, and may
result in subsequent mds revoke messages getting ignored.

Fix by only releasing unused caps.
Signed-off-by: NSage Weil <sage@newdream.net>
      916623da
    • S
      ceph: clean up handle_cap_grant, handle_caps wrt session mutex · 15637c8b
      由 Sage Weil 提交于 
      Drop session mutex unconditionally in handle_cap_grant, and do the
check_caps from the handle_cap_grant helper.  This avoids using a magic
return value.

Also avoid using a flag variable in the IMPORT case and call
check_caps at the appropriate point.
Signed-off-by: NSage Weil <sage@newdream.net>
      15637c8b
    • S
      ceph: fix session locking in handle_caps, ceph_check_caps · cdc2ce05
      由 Sage Weil 提交于 
      Passing a session pointer to ceph_check_caps() used to mean it would leave
the session mutex locked.  That wasn't always possible if it wasn't passed
CHECK_CAPS_AUTHONLY.   If could unlock the passed session and lock a
differet session mutex, which was clearly wrong, and also emitted a
warning when it a racing CPU retook it and we did an unlock from the wrong
context.

This was only a problem when there was more than one MDS.

First, make ceph_check_caps unconditionally drop the session mutex, so that
it is free to lock other sessions as needed.  Then adjust the one caller
that passes in a session (handle_cap_grant) accordingly.
Signed-off-by: NSage Weil <sage@newdream.net>
      cdc2ce05
    • S
      ceph: drop unnecessary WARN_ON in caps migration · 4ea0043a
      由 Sage Weil 提交于 
      If we don't have the exported cap it's because we already released it. No
need to WARN.
Signed-off-by: NSage Weil <sage@newdream.net>
      4ea0043a
    • S
      ceph: fix null pointer deref of r_osd in debug output · 12eadc19
      由 Sage Weil 提交于 
      This causes an oops when debug output is enabled and we kick
an osd request with no current r_osd (sometime after an osd
failure).  Check the pointer before dereferencing.
Signed-off-by: NSage Weil <sage@newdream.net>
      12eadc19
    • S
      ceph: clean up service ticket decoding · 0a990e70
      由 Sage Weil 提交于 
      Previously we would decode state directly into our current ticket_handler.
This is problematic if for some reason we fail to decode, because we end
up with half new state and half old state.

We are probably already in bad shape if we get an update we can't decode,
but we may as well be tidy anyway.  Decode into new_* temporaries and
update the ticket_handler only on success.
Signed-off-by: NSage Weil <sage@newdream.net>
      0a990e70
  3. 21 3月, 2010 6 次提交
  5. 19 3月, 2010 4 次提交
    • C
      Btrfs: fix the inode ref searches done by btrfs_search_path_in_tree · 8ad6fcab
      由 Chris Mason 提交于 
      This is used by the inode lookup ioctl to follow all the backrefs up
to the subvol root.  But the search being done would sometimes land one
past the last item in the leaf instead of finding the backref.

This changes the search to look for the highest possible backref and hop
back one item.  It also fixes a leaked path on failure to find the root.
Signed-off-by: NChris Mason <chris.mason@oracle.com>
      8ad6fcab
    • C
      Btrfs: allow treeid==0 in the inode lookup ioctl · 1b53ac4d
      由 Chris Mason 提交于 
      When a root id of 0 is sent to the inode lookup ioctl, it will
use the root of the file we're ioctling and pass the root id
back to userland along with the results.

This allows userland to do searches based on that root later on.
Signed-off-by: NChris Mason <chris.mason@oracle.com>
      1b53ac4d
    • C
      Btrfs: return keys for large items to the search ioctl · 90fdde14
      由 Chris Mason 提交于 
      The search ioctl was skipping large items entirely (ones that are too
big for the results buffer).  This changes things to at least copy
the item header so that we can send information about the item back to
userland.
Signed-off-by: NChris Mason <chris.mason@oracle.com>
      90fdde14
    • C
      Btrfs: fix key checks and advance in the search ioctl · abc6e134
      由 Chris Mason 提交于 
      The search ioctl was working well for finding tree roots, but using it for
generic searches requires a few changes to how the keys are advanced.
This treats the search control min fields for objectid, type and offset
more like a key, where we drop the offset to zero once we bump the type,
etc.

The downside of this is that we are changing the min_type and min_offset
fields during the search, and so the ioctl caller needs extra checks to make sure
the keys in the result are the ones it wanted.

This also changes key_in_sk to use btrfs_comp_cpu_keys, just to make
things more readable.
Signed-off-by: NChris Mason <chris.mason@oracle.com>
      abc6e134
  7. 18 3月, 2010 2 次提交
  9. 17 3月, 2010 6 次提交
  11. 16 3月, 2010 1 次提交
  13. 15 3月, 2010 10 次提交