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  1. 15 12月, 2010 10 次提交
  3. 14 12月, 2010 3 次提交
    • C
      Btrfs: prevent RAID level downgrades when space is low · 83a50de9
      由 Chris Mason 提交于 
      The extent allocator has code that allows us to fill
allocations from any available block group, even if it doesn't
match the raid level we've requested.

This was put in because adding a new drive to a filesystem
made with the default mkfs options actually upgrades the metadata from
single spindle dup to full RAID1.

But, the code also allows us to allocate from a raid0 chunk when we
really want a raid1 or raid10 chunk.  This can cause big trouble because
mkfs creates a small (4MB) raid0 chunk for data and metadata which then
goes unused for raid1/raid10 installs.

The allocator will happily wander in and allocate from that chunk when
things get tight, which is not correct.

The fix here is to make sure that we provide duplication when the
caller has asked for it.  It does all the dups to be any raid level,
which preserves the dup->raid1 upgrade abilities.
Signed-off-by: NChris Mason <chris.mason@oracle.com>
      83a50de9
    • C
      Btrfs: account for missing devices in RAID allocation profiles · cd02dca5
      由 Chris Mason 提交于 
      When we mount in RAID degraded mode without adding a new device to
replace the failed one, we can end up using the wrong RAID flags for
allocations.

This results in strange combinations of block groups (raid1 in a raid10
filesystem) and corruptions when we try to allocate blocks from single
spindle chunks on drives that are actually missing.

The first device has two small 4MB chunks in it that mkfs creates and
these are usually unused in a raid1 or raid10 setup.  But, in -o degraded,
the allocator will fall back to these because the mask of desired raid groups
isn't correct.

The fix here is to count the missing devices as we build up the list
of devices in the system.  This count is used when picking the
raid level to make sure we continue using the same levels that were
in place before we lost a drive.
Signed-off-by: NChris Mason <chris.mason@oracle.com>
      cd02dca5
    • C
      Btrfs: EIO when we fail to read tree roots · 68433b73
      由 Chris Mason 提交于 
      If we just get a plain IO error when we read tree roots, the code
wasn't properly sending that error up the chain.  This allowed mounts to
continue when they should failed, and allowed operations
on partially setup root structs.  The end result was usually oopsen
on spinlocks that hadn't been spun up correctly.
Signed-off-by: NChris Mason <chris.mason@oracle.com>
      68433b73
  5. 11 12月, 2010 8 次提交
  7. 10 12月, 2010 5 次提交
    • C
      xfs: log timestamp changes to the source inode in rename · 05340d4a
      由 Christoph Hellwig 提交于 
      Now that we don't mark VFS inodes dirty anymore for internal
timestamp changes, but rely on the transaction subsystem to push
them out, we need to explicitly log the source inode in rename after
updating it's timestamps to make sure the changes actually get
forced out by sync/fsync or an AIL push.

We already account for the fourth inode in the log reservation, as a
rename of directories needs to update the nlink field, so just
adding the xfs_trans_log_inode call is enough.

This fixes the xfsqa 065 regression introduced by:

	"xfs: don't use vfs writeback for pure metadata modifications"
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NDave Chinner <dchinner@redhat.com>
Signed-off-by: NAlex Elder <aelder@sgi.com>
      05340d4a
    • J
      Btrfs: fixup return code for btrfs_del_orphan_item · 7e1fea73
      由 Josef Bacik 提交于 
      If the orphan item doesn't exist, we return 1, which doesn't make any sense to
the callers.  Instead return -ENOENT if we didn't find the item.  Thanks,
Signed-off-by: NJosef Bacik <josef@redhat.com>
      7e1fea73
    • J
      Btrfs: do not do fast caching if we are allocating blocks for tree_root · b8399dee
      由 Josef Bacik 提交于 
      Since the fast caching uses normal tree locking, we can possibly deadlock if we
get to the caching via a btrfs_search_slot() on the tree_root.  So just check to
see if the root we are on is the tree root, and just don't do the fast caching.
Reported-by: NSage Weil <sage@newdream.net>
Signed-off-by: NJosef Bacik <josef@redhat.com>
      b8399dee
    • J
      Btrfs: deal with space cache errors better · 2b20982e
      由 Josef Bacik 提交于 
      Currently if the space cache inode generation number doesn't match the
generation number in the space cache header we will just fail to load the space
cache, but we won't mark the space cache as an error, so we'll keep getting that
error each time somebody tries to cache that block group until we actually clear
the thing.  Fix this by marking the space cache as having an error so we only
get the message once.  This patch also makes it so that we don't try and setup
space cache for a block group that isn't cached, since we won't be able to write
it out anyway.  None of these problems are actual problems, they are just
annoying and sub-optimal.  Thanks,
Signed-off-by: NJosef Bacik <josef@redhat.com>
      2b20982e
    • J
      Btrfs: fix use after free in O_DIRECT · 955256f2
      由 Josef Bacik 提交于 
      This fixes a bug where we use dip after we have freed it.  Instead just use the
file_offset that was passed to the function.  Thanks,
Signed-off-by: NJosef Bacik <josef@redhat.com>
      955256f2
  9. 09 12月, 2010 8 次提交
  11. 08 12月, 2010 6 次提交