glusterfs.git/xlators/cluster/dht/src/dht-linkfile.c, branch v3.4.2qa3

cluster/dht: Create linkfile with file uid/gid

2013-03-04T10:40:01+00:00

Currently, linkfile creation happens as root.

use uid/gid returned from _cbk (link/rename) to set the correct ownership of
the link files.

Also added test/dht.rc to implement common dht functions

BUG: 884597
Change-Id: I6bc0e04f62d4716fc033681e5678e852a1be7a2f
Signed-off-by: shishir gowda 
Reviewed-on: http://review.gluster.org/4607
Tested-by: Gluster Build System 
Reviewed-by: Jeff Darcy

license: dual license under GPLV2 and LGPLV3+

2012-05-11T05:06:16+00:00

Note that the license was not changed in any of the following:
	.../argp-standalone/...
        .../booster/...
        .../cli/...
        .../contrib/...
        .../extras/...
        .../glusterfsd/...
        .../glusterfs-hadoop/...
        .../mod_clusterfs/...
        .../scheduler/...
        .../swift/...

The license was not changed in any of the non-building xlators. The
license was not changed in any of the xlators that seemed — to me — to
be clearly server-side only, e.g. protocol/server

Note too that copyright was changed along with the license; I did
not change the copyright in files where the license did not change.

If you find any errors or ommissions please don't hesitate to let me know.

The complete list of files with the license change is:
	libglusterfs/src/byte-order.h
	libglusterfs/src/call-stub.c
	libglusterfs/src/call-stub.h
	libglusterfs/src/checksum.c
	libglusterfs/src/checksum.h
	libglusterfs/src/circ-buff.c
	libglusterfs/src/circ-buff.h
	libglusterfs/src/common-utils.c
	libglusterfs/src/common-utils.h
	libglusterfs/src/compat-errno.c
	libglusterfs/src/compat-errno.h
	libglusterfs/src/compat.c
	libglusterfs/src/compat.h
	libglusterfs/src/daemon.c
	libglusterfs/src/daemon.h
	libglusterfs/src/defaults.c
	libglusterfs/src/defaults.h
	libglusterfs/src/dict.c
	libglusterfs/src/dict.h
	libglusterfs/src/event-history.c
	libglusterfs/src/event-history.h
	libglusterfs/src/event.c
	libglusterfs/src/event.h
	libglusterfs/src/fd-lk.c
	libglusterfs/src/fd-lk.h
	libglusterfs/src/fd.c
	libglusterfs/src/fd.h
	libglusterfs/src/gf-dirent.c
	libglusterfs/src/gf-dirent.h
	libglusterfs/src/globals.c
	libglusterfs/src/globals.h
	libglusterfs/src/glusterfs.h
	libglusterfs/src/graph-print.c
	libglusterfs/src/graph-utils.h
	libglusterfs/src/graph.c
	libglusterfs/src/hashfn.c
	libglusterfs/src/hashfn.h
	libglusterfs/src/iatt.h
	libglusterfs/src/inode.c
	libglusterfs/src/inode.h
	libglusterfs/src/iobuf.c
	libglusterfs/src/iobuf.h
	libglusterfs/src/latency.c
	libglusterfs/src/latency.h
	libglusterfs/src/list.h
	libglusterfs/src/lkowner.h
	libglusterfs/src/locking.h
	libglusterfs/src/logging.c
	libglusterfs/src/logging.h
	libglusterfs/src/mem-pool.c
	libglusterfs/src/mem-pool.h
	libglusterfs/src/mem-types.h
	libglusterfs/src/options.c
	libglusterfs/src/options.h
	libglusterfs/src/rbthash.c
	libglusterfs/src/rbthash.h
	libglusterfs/src/run.c
	libglusterfs/src/run.h
	libglusterfs/src/scheduler.c
	libglusterfs/src/scheduler.h
	libglusterfs/src/stack.c
	libglusterfs/src/stack.h
	libglusterfs/src/statedump.c
	libglusterfs/src/statedump.h
	libglusterfs/src/syncop.c
	libglusterfs/src/syncop.h
	libglusterfs/src/syscall.c
	libglusterfs/src/syscall.h
	libglusterfs/src/timer.c
	libglusterfs/src/timer.h
	libglusterfs/src/trie.c
	libglusterfs/src/trie.h
	libglusterfs/src/xlator.c
	libglusterfs/src/xlator.h
	libglusterfsclient/src/libglusterfsclient-dentry.c
	libglusterfsclient/src/libglusterfsclient-internals.h
	libglusterfsclient/src/libglusterfsclient.c
	libglusterfsclient/src/libglusterfsclient.h
	rpc/rpc-lib/src/auth-glusterfs.c
	rpc/rpc-lib/src/auth-null.c
	rpc/rpc-lib/src/auth-unix.c
	rpc/rpc-lib/src/protocol-common.h
	rpc/rpc-lib/src/rpc-clnt.c
	rpc/rpc-lib/src/rpc-clnt.h
	rpc/rpc-lib/src/rpc-transport.c
	rpc/rpc-lib/src/rpc-transport.h
	rpc/rpc-lib/src/rpcsvc-auth.c
	rpc/rpc-lib/src/rpcsvc-common.h
	rpc/rpc-lib/src/rpcsvc.c
	rpc/rpc-lib/src/rpcsvc.h
	rpc/rpc-lib/src/xdr-common.h
	rpc/rpc-lib/src/xdr-rpc.c
	rpc/rpc-lib/src/xdr-rpc.h
	rpc/rpc-lib/src/xdr-rpcclnt.c
	rpc/rpc-lib/src/xdr-rpcclnt.h
	rpc/rpc-transport/rdma/src/name.c
	rpc/rpc-transport/rdma/src/name.h
	rpc/rpc-transport/rdma/src/rdma.c
	rpc/rpc-transport/rdma/src/rdma.h
	rpc/rpc-transport/socket/src/name.c
	rpc/rpc-transport/socket/src/name.h
	rpc/rpc-transport/socket/src/socket.c
	rpc/rpc-transport/socket/src/socket.h
	xlators/cluster/afr/src/afr-common.c
	xlators/cluster/afr/src/afr-dir-read.c
	xlators/cluster/afr/src/afr-dir-read.h
	xlators/cluster/afr/src/afr-dir-write.c
	xlators/cluster/afr/src/afr-dir-write.h
	xlators/cluster/afr/src/afr-inode-read.c
	xlators/cluster/afr/src/afr-inode-read.h
	xlators/cluster/afr/src/afr-inode-write.c
	xlators/cluster/afr/src/afr-inode-write.h
	xlators/cluster/afr/src/afr-lk-common.c
	xlators/cluster/afr/src/afr-mem-types.h
	xlators/cluster/afr/src/afr-open.c
	xlators/cluster/afr/src/afr-self-heal-algorithm.c
	xlators/cluster/afr/src/afr-self-heal-algorithm.h
	xlators/cluster/afr/src/afr-self-heal-common.c
	xlators/cluster/afr/src/afr-self-heal-common.h
	xlators/cluster/afr/src/afr-self-heal-data.c
	xlators/cluster/afr/src/afr-self-heal-entry.c
	xlators/cluster/afr/src/afr-self-heal-metadata.c
	xlators/cluster/afr/src/afr-self-heal.h
	xlators/cluster/afr/src/afr-self-heald.c
	xlators/cluster/afr/src/afr-self-heald.h
	xlators/cluster/afr/src/afr-transaction.c
	xlators/cluster/afr/src/afr-transaction.h
	xlators/cluster/afr/src/afr.c
	xlators/cluster/afr/src/afr.h
	xlators/cluster/afr/src/pump.c
	xlators/cluster/afr/src/pump.h
	xlators/cluster/dht/src/dht-common.c
	xlators/cluster/dht/src/dht-common.h
	xlators/cluster/dht/src/dht-diskusage.c
	xlators/cluster/dht/src/dht-hashfn.c
	xlators/cluster/dht/src/dht-helper.c
	xlators/cluster/dht/src/dht-inode-read.c
	xlators/cluster/dht/src/dht-inode-write.c
	xlators/cluster/dht/src/dht-layout.c
	xlators/cluster/dht/src/dht-linkfile.c
	xlators/cluster/dht/src/dht-mem-types.h
	xlators/cluster/dht/src/dht-rebalance.c
	xlators/cluster/dht/src/dht-rename.c
	xlators/cluster/dht/src/dht-selfheal.c
	xlators/cluster/dht/src/dht.c
	xlators/cluster/dht/src/nufa.c
	xlators/cluster/dht/src/switch.c
	xlators/cluster/stripe/src/stripe-helpers.c
	xlators/cluster/stripe/src/stripe-mem-types.h
	xlators/cluster/stripe/src/stripe.c
	xlators/cluster/stripe/src/stripe.h
	xlators/features/index/src/index-mem-types.h ¹
	xlators/features/index/src/index.c ¹
	xlators/features/index/src/index.h ¹
	xlators/performance/io-cache/src/io-cache.c
	xlators/performance/io-cache/src/io-cache.h
	xlators/performance/io-cache/src/ioc-inode.c
	xlators/performance/io-cache/src/ioc-mem-types.h
	xlators/performance/io-cache/src/page.c
	xlators/performance/io-threads/src/io-threads.c
	xlators/performance/io-threads/src/io-threads.h
	xlators/performance/io-threads/src/iot-mem-types.h
	xlators/performance/md-cache/src/md-cache-mem-types.h
	xlators/performance/md-cache/src/md-cache.c
	xlators/performance/quick-read/src/quick-read-mem-types.h
	xlators/performance/quick-read/src/quick-read.c
	xlators/performance/quick-read/src/quick-read.h
	xlators/performance/read-ahead/src/page.c
	xlators/performance/read-ahead/src/read-ahead-mem-types.h
	xlators/performance/read-ahead/src/read-ahead.c
	xlators/performance/read-ahead/src/read-ahead.h
	xlators/performance/symlink-cache/src/symlink-cache.c
	xlators/performance/write-behind/src/write-behind-mem-types.h
	xlators/performance/write-behind/src/write-behind.c
	xlators/protocol/auth/addr/src/addr.c ¹
	xlators/protocol/auth/login/src/login.c ¹
	xlators/protocol/client/src/client-callback.c
	xlators/protocol/client/src/client-handshake.c
	xlators/protocol/client/src/client-helpers.c
	xlators/protocol/client/src/client-lk.c
	xlators/protocol/client/src/client-mem-types.h
	xlators/protocol/client/src/client.c
	xlators/protocol/client/src/client.h
	xlators/protocol/client/src/client3_1-fops.c

¹ Copyright only, license reverted to original

Change-Id: If560e826c61b6b26f8b9af7bed6e4bcbaeba31a8
BUG: 820551
Signed-off-by: Kaleb KEITHLEY 
Reviewed-on: http://review.gluster.com/3304
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

core: adding extra data for fops

2012-03-22T23:40:27+00:00

with this change, the xlator APIs will have a dictionary as extra
argument, which is passed between all the layers. This can be
utilized for overloading in some of the operations.

Change-Id: I58a8186b3ef647650280e63f3e5e9b9de7827b40
Signed-off-by: Amar Tumballi 
BUG: 782265
Reviewed-on: http://review.gluster.com/2960
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

posix: handle some internal behavior in posix_mknod()

2012-02-17T06:48:57+00:00

assume a case of link() systemcall, which is handled in distribute by
creating a 'linkfile' in hashed subvolume, if the 'oldloc' is present
in different subvolume. we have same 'gfid' for the linkfile as that
of file for consistency. Now, a file with multiple hardlinks, we may
end up with 'hardlinked' linkfiles. dht create linkfile using 'mknod()'
fop, and as now posix_mknod() is not equipped to handle this situation.

this patch fixes the situation by looking at the 'internal' key set in
the dictionary to differentiate the call which originates from inside
with regular system calls.

Change-Id: Ibff7c31f8e0c8bdae035c705c93a295f080ff985
BUG: 763844
Signed-off-by: Amar Tumballi 
Reviewed-on: http://review.gluster.com/2755
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

distribute rebalance: handle the open file migration

2011-09-13T06:57:38+00:00

Complexity involved: To migrate a file with open fd, we have to
notify the other client process which has the open fd, and make
sure the write()s happening on that fd is properly synced to the
migrated file. Once the migration is complete, the client
process which has open-fd should get notified and it should
start performing all the operations on the new subvolume,
instead of earlier cached volume.

How to solve the notification part:

We can overload the 'postbuf' attribute in the _cbk() function to
understand if a file is 'under-migration' or 'migration-complete'
state. (This will be something similar to deciding whether a file
is DHT-linkfile by its 'mode').

Overall change includes below mentioned major changes:

1. dht_linkfile is decided by only 2 factors (mode(01000),
   xattr(trusted.glusterfs.dht.linkto)), instead of earlier
   3 factors (size==0)

2. in linkfile self-heal part (in 'dht_lookup_everywhere_cbk()'),
   don't delete a linkfile if there is a open-fd on it. It means,
   there may be a migration in progress.

3. if a file's revalidate fails with ENOENT, it may be due to file
   migration, and hence need a lookup_everywhere()

4. There will be 2 phases of file-migration.

-> Phase 1: Migration in progress
   * The source data file will have SGID and STICKY bit set in its mode.
   * The source data file will have a 'linkto' xattr pointing the
     destination.
   * Destination file will have mode set to '01000', and 'linkto' xattr
     set to itself.

-> Phase 2: File migration Complete
   * The source data file will have mode '01000', and will be 'truncated'
     to size 0.
   * The destination file will have inherited mode from the source. (without
     sgid and sticky bit) and its 'linkto' attribute will be removed.

4. Changes in distribute to work smoothly with a file which is in migration /
   got migrated.

The 'fops' are divided into 3 categories, inode-read, inode-write and others.
inode-read fops need to handle only 'phase 2' notification, where as, the
inode-write fops need to handle both 'phase 1' and phase2. The inode-write
operations will be done on source file, and if any of 'file-migration' procedures
are detected in _cbk(), then the operations should be performed on the destination
too.

when a phase-2 is detected, then the inode-ctx itself should be changed to represent
a new layout.

With these changes, the open file migration will work smoothly with multiple clients.

Change-Id: I512408463814e650f34c62ed009bf2101d016fd6
BUG: 3071
Reviewed-on: http://review.gluster.com/209
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

Change Copyright current year

2011-08-10T17:57:19+00:00

Change-Id: I2d10f2be44f518f496427f257988f1858e888084
BUG: 3348
Reviewed-on: http://review.gluster.com/200
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

LICENSE: s/GNU Affero General Public/GNU General Public/

2011-08-06T13:33:52+00:00

Change-Id: I3914467611e573cccee0d22df93920cf1b2eb79f
BUG: 3348
Reviewed-on: http://review.gluster.com/182
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

DHT rename: Recreate linkfile after unlink

2011-08-04T04:57:27+00:00

This is done, so that there is no gfid mismatch. Unlink the older
linkfile if it exists, and recreate it with the correct gfid.

Also removed unused rename related code.

Change-Id: Ice0cdff51db786dafb1a019f7642c7d000e8c5f3
BUG: 2522
Reviewed-on: http://review.gluster.com/142
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

cluster/distribute: send proper 'params' dictionary during linkfile creation

2011-07-12T12:37:17+00:00

when the code path enters the 'subvol_filled()' case, local->params is set,
which contains the 'gfid-req' value, but the linkfile creation was not
checking for its existance.

Signed-off-by: Amar Tumballi 
Signed-off-by: Anand Avati 

BUG: 3159 (mknod (linkfile creation) with no 'gfid-req' key)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=3159

dht: set linkto xattr with linkfile create (mknod)

2011-07-08T09:25:49+00:00

Signed-off-by: Anand Avati 

BUG: 2815 (Server-enforced ACLs)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2815