diff options
| author | Susant Palai <spalai@redhat.com> | 2018-01-18 13:06:12 +0530 |
|---|---|---|
| committer | Raghavendra G <rgowdapp@redhat.com> | 2018-02-02 15:24:38 +0000 |
| commit | 545a7ce6762a1b3a7b989b43a9d18b5b1b299df0 (patch) | |
| tree | 0f2c3015697553914cb520dbda107f3843521f53 /xlators/storage/posix/src/posix-handle.h | |
| parent | d9f773ba719397c12860f494a8cd38109e4b2fe3 (diff) | |
cluster/dht: avoid overwriting client writes during migration
For more details on this issue see
https://github.com/gluster/glusterfs/issues/308
Solution:
This is a restrictive solution where a file will not be migrated
if a client writes to it during the migration. This does not
check if the writes from the rebalance and the client actually
do overlap.
If dht_writev_cbk finds that the file is being migrated (PHASE1)
it will set an xattr on the destination file indicating the file
was updated by a non-rebalance client.
Rebalance checks if any other client has written to the dst file
and aborts the file migration if it finds the xattr.
updates gluster/glusterfs#308
Change-Id: I73aec28bc9dbb8da57c7425ec88c6b6af0fbc9dd
Signed-off-by: Susant Palai <spalai@redhat.com>
Signed-off-by: Raghavendra G <rgowdapp@redhat.com>
Signed-off-by: N Balachandran <nbalacha@redhat.com>
Diffstat (limited to 'xlators/storage/posix/src/posix-handle.h')
| -rw-r--r-- | xlators/storage/posix/src/posix-handle.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/xlators/storage/posix/src/posix-handle.h b/xlators/storage/posix/src/posix-handle.h index 97186f91e64..8a07cf2b57d 100644 --- a/xlators/storage/posix/src/posix-handle.h +++ b/xlators/storage/posix/src/posix-handle.h @@ -186,4 +186,8 @@ int posix_create_link_if_gfid_exists (xlator_t *this, uuid_t gfid, char *real_path, inode_table_t *itable); +int +posix_check_internal_writes (xlator_t *this, fd_t *fd, int sysfd, + dict_t *xdata); + #endif /* !_POSIX_HANDLE_H */ |