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2011-07-12NFS: Clean up nfs_read_rpcsetup and nfs_write_rpcsetupTrond Myklebust
Split them up into two parts: one which sets up the struct nfs_read/write_data, the other which sets up the actual RPC call or pNFS call. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-12NFS: Don't use DATA_SYNC writesTrond Myklebust
If we're writing back data, and the FLUSH_STABLE flag is set, then we always want to use NFS_FILE_SYNC, since we're always in a situation where we're doing page reclaim, and so we want to free up the page as quickly as possible. If we're in the FLUSH_COND_STABLE case, then we either want to use another unstable write (if we have to do a commit anyway) or again, we want to use NFS_FILE_SYNC because we know that we have no more pages to write out. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-12NFSv4.1: do not use deviceids after MDS clientid invalidationAndy Adamson
Mark all deviceids established under an expired MDS clientid as invalid. Stop all new i/o through DS and send through the MDS. Don't use any new LAYOUTGETs that use the invalid deviceid. Purge all layouts established under the expired MDS clientid. Remove the MDS clientid deviceid and data servers reference Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-12NFSv4.1: Clean up layoutreturnTrond Myklebust
Since we take a reference to it, we really ought to pass the a pointer to the layout header in the arguments instead of assuming that NFS_I(inode)->layout will forever point to the correct object. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-12NFSv4.1: File layout only supports whole file layoutsAndy Adamson
Ask for whole file layouts. Until support for layout segments is fully supported in the file layout code, discard non-whole file layouts. Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-12NFSv4.1: Clean ups for the device id cacheTrond Myklebust
The fact that the global device id cache holds a reference to the nfs4_deviceid_node until it is invisible to rcu lookups implies that we can always assume that the reference count is non-zero in _find_get_deviceid. Also clean up nfs4_put_deviceid_node and the removal of the device id from the cache. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-12NFSv4.1: Fall back to ordinary i/o through the mds if we have no layout segmentTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-12NFSv4.1: Add an initialisation callback for pNFSTrond Myklebust
Ensure that we always get a layout before setting up the i/o request. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-12NFS: Cleanup of the nfs_pageio code in preparation for a pnfs bugfixTrond Myklebust
We need to ensure that the layouts are set up before we can decide to coalesce requests. To do so, we want to further split up the struct nfs_pageio_descriptor operations into an initialisation callback, a coalescing test callback, and a 'do i/o' callback. This patch cleans up the existing callback methods before adding the 'initialisation' callback. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-12NFS: test and free stateids during recoveryBryan Schumaker
When recovering open files and locks, the stateid should be tested against the server and freed if it is invalid. This patch adds new recovery functions for NFS v4.1. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-12NFS: added FREE_STATEID callBryan Schumaker
FREE_STATEID is used to tell the server that we want to free a stateid that no longer has any locks associated with it. This allows the client to reclaim locks without encountering edge conditions documented in section 8.4.3 of RFC 5661. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-12NFS: Added TEST_STATEID callBryan Schumaker
This patch adds in the xdr for doing a TEST_STATEID call with a single stateid. RFC 5661 allows multiple stateids to be tested in a single call, but only testing one keeps things simpler for now. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-12NFS: Add SECINFO_NO_NAME procedureBryan Schumaker
If the client is using NFS v4.1, then we can use SECINFO_NO_NAME to find the secflavor for the initial mount. If the server doesn't support SECINFO_NO_NAME then I fall back on the "guess and check" method used for v4.0 mounts. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-12NFS: move pnfs layouts to nfs_server structureWeston Andros Adamson
Layouts should be tracked per nfs_server (aka superblock) instead of per struct nfs_client, which may have multiple FSIDs associated with it. Signed-off-by: Weston Andros Adamson <dros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-12NFS: fix commentWeston Andros Adamson
We support IPv4 and IPv6 now. Signed-off-by: Weston Andros Adamson <dros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-12NFS: use scope from exchange_id to skip reclaimWeston Andros Adamson
can be skipped if the "eir_server_scope" from the exchange_id proc differs from previous calls. Also, in the future server_scope will be useful for determining whether client trunking is available Signed-off-by: Weston Andros Adamson <dros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-12NFS: pnfs: loop over multipath addrs on connectWeston Andros Adamson
Don't just use the first addr in the multipath list - instead, loop over addresses when calling nfs4_set_ds_client() (which calls connect) until it is successful. Although this is not real multipath support, it's a quick fix to handle when an MDS sends a list of addresses for a DS and some of the addr families are unsupported or misconfigured (like no routable ipv6 addr assigned). This will attempt all paths to the DS before giving up, instead of immediately falling back to the MDS. As before, an error encountered after a successful connect() will cause all i/o to fall back to the MDS. Signed-off-by: Weston Andros Adamson <dros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-12NFS: Parse and store all multipath DS addressesWeston Andros Adamson
This parses and stores all addresses associated with each data server, laying the groundwork for supporting multipath to data servers. - Skips over addresses that cannot be parsed (ie IPv6 addrs if v6 is not enabled). Only fails if none of the addresses are recognizable - Currently only uses the first address that parsed cleanly - Tested against pynfs server (modified to support multipath) Signed-off-by: Weston Andros Adamson <dros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-12NFS: pnfs IPv6 supportWeston Andros Adamson
Handle ipv6 remote addresses from GETDEVICEINFO - supports netid "tcp" for ipv4 and "tcp6" for ipv6 as rfc 5665 specifies - added ds_remotestr to avoid having to handle different AFs in every dprintk - tested against pynfs 4.1 server, submitting ipv6 support patch to pynfs - tested with IPv6 disabled, it compiles cleanly and relies on rpc_pton to refuse to accept IPv6 addresses Signed-off-by: Weston Andros Adamson <dros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-11NFSv4.1: update nfs4_fattr_bitmap_maxszAndy Adamson
Attribute IDs assigned in RFC 5661 now require three bitmaps. Fixes hitting a BUG_ON in xdr_shrink_bufhead when getting ACLs. Signed-off-by: Andy Adamson <andros@netapp.com> Cc:stable@kernel.org [2.6.39] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-07-11Merge branch 'master' into for-nextJiri Kosina
Sync with Linus' tree to be able to apply pending patches that are based on newer code already present upstream.
2011-07-07FS-Cache: Add a helper to bulk uncache pages on an inodeDavid Howells
Add an FS-Cache helper to bulk uncache pages on an inode. This will only work for the circumstance where the pages in the cache correspond 1:1 with the pages attached to an inode's page cache. This is required for CIFS and NFS: When disabling inode cookie, we were returning the cookie and setting cifsi->fscache to NULL but failed to invalidate any previously mapped pages. This resulted in "Bad page state" errors and manifested in other kind of errors when running fsstress. Fix it by uncaching mapped pages when we disable the inode cookie. This patch should fix the following oops and "Bad page state" errors seen during fsstress testing. ------------[ cut here ]------------ kernel BUG at fs/cachefiles/namei.c:201! invalid opcode: 0000 [#1] SMP Pid: 5, comm: kworker/u:0 Not tainted 2.6.38.7-30.fc15.x86_64 #1 Bochs Bochs RIP: 0010: cachefiles_walk_to_object+0x436/0x745 [cachefiles] RSP: 0018:ffff88002ce6dd00 EFLAGS: 00010282 RAX: ffff88002ef165f0 RBX: ffff88001811f500 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000100 RDI: 0000000000000282 RBP: ffff88002ce6dda0 R08: 0000000000000100 R09: ffffffff81b3a300 R10: 0000ffff00066c0a R11: 0000000000000003 R12: ffff88002ae54840 R13: ffff88002ae54840 R14: ffff880029c29c00 R15: ffff88001811f4b0 FS: 00007f394dd32720(0000) GS:ffff88002ef00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00007fffcb62ddf8 CR3: 000000001825f000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process kworker/u:0 (pid: 5, threadinfo ffff88002ce6c000, task ffff88002ce55cc0) Stack: 0000000000000246 ffff88002ce55cc0 ffff88002ce6dd58 ffff88001815dc00 ffff8800185246c0 ffff88001811f618 ffff880029c29d18 ffff88001811f380 ffff88002ce6dd50 ffffffff814757e4 ffff88002ce6dda0 ffffffff8106ac56 Call Trace: cachefiles_lookup_object+0x78/0xd4 [cachefiles] fscache_lookup_object+0x131/0x16d [fscache] fscache_object_work_func+0x1bc/0x669 [fscache] process_one_work+0x186/0x298 worker_thread+0xda/0x15d kthread+0x84/0x8c kernel_thread_helper+0x4/0x10 RIP cachefiles_walk_to_object+0x436/0x745 [cachefiles] ---[ end trace 1d481c9af1804caa ]--- I tested the uncaching by the following means: (1) Create a big file on my NFS server (104857600 bytes). (2) Read the file into the cache with md5sum on the NFS client. Look in /proc/fs/fscache/stats: Pages : mrk=25601 unc=0 (3) Open the file for read/write ("bash 5<>/warthog/bigfile"). Look in proc again: Pages : mrk=25601 unc=25601 Reported-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-and-Tested-by: Suresh Jayaraman <sjayaraman@suse.de> cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-06-28pnfs: write: Set mds_offset in the generic layer - it is needed by all LDsBoaz Harrosh
In current pnfs tree, all the layouts set mds_offset in their .write_pagelist member. mds_offset is only used by generic layer and should be handled by it. This patch is for upstream. It is needed in this -rc series to fix a bug in objects layout_commit. I'll send patches for objects and blocks to be squashed into current pnfs tree. TODO: It looks like the read path needs the same patch. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-06-21NFS: Fix decode_secinfo_maxszBryan Schumaker
I initially did the calculation in bytes, and not words Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-06-21NFSv4.1: Fix an off-by-one error in pnfs_generic_pg_testTrond Myklebust
And document what is going on there... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-06-21NFSv4.1: Fix some issues with pnfs_generic_pg_testTrond Myklebust
1. If the intention is to coalesce requests 'prev' and 'req' then we have to ensure at least that we have a layout starting at req_offset(prev). 2. If we're only requesting a minimal layout of length desc->pg_count, we need to test the length actually returned by the server before we allow the coalescing to occur. 3. We need to deal correctly with (pgio->lseg == NULL) 4. Fixup the test guarding the pnfs_update_layout. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-06-20NFSv4.1: file layout must consider pg_bsize for coalescingBenny Halevy
Otherwise we end up overflowing the rpc buffer size on the receive end. Signed-off-by: Benny Halevy <benny@tonian.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-06-20treewide: remove duplicate includesVitaliy Ivanov
Many stupid corrections of duplicated includes based on the output of scripts/checkincludes.pl. Signed-off-by: Vitaliy Ivanov <vitalivanov@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-06-19pnfs-obj: No longer needed to take an extra ref at add_deviceBoaz Harrosh
Andy's last device_cache patches, already take an extra reference on the newly inserted device_id. So we can remove it from obj-io. Without this patch the device_ids are leaked. Andy's patches are not in Linus tree yet. So I'm not sure if they are scheduled for this Kernel or the next. This patch should be added as part of these. CC: Andy Adamson <andros@netapp.com> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-06-16NFSv4: Fix a readdir regressionTrond Myklebust
Commit 7ebb9315 (NFS: use secinfo when crossing mountpoints) introduces a regression when decoding an NFSv4 readdir entry that sets the rdattr_error field. By treating the resulting value as if it is a decoding error, the current code may cause us to skip valid readdir entries. Reported-by: Andy Adamson <andros@netapp.com> Cc: stable@kernel.org [2.6.39] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-06-15nfs4.1: mark layout as bad on error path in _pnfs_return_layoutFred Isaman
Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-06-15nfs4.1: prevent race that allowed use of freed layout in _pnfs_return_layoutFred Isaman
mark_matching_lsegs_invalid could put the last ref to the layout, so the get_layout_hdr needs to be called first. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-06-15NFSv4.1: need to put_layout_hdr on _pnfs_return_layout error pathBenny Halevy
We always get a reference on the layout header and we rely on nfs4_layoutreturn_release to put it. If we hit an allocation error before starting the rpc proc we bail out early without dereferncing the layout header properly. Signed-off-by: Benny Halevy <benny@tonian.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-06-15NFS: (d)printks should use %zd for ssize_t argumentsDavid Howells
(d)printks should use %zd for ssize_t arguments not %ld, otherwise they might get a warning. I see the following with MN10300. fs/nfs/objlayout/objlayout.c: In function 'objlayout_read_done': fs/nfs/objlayout/objlayout.c:294: warning: format '%ld' expects type 'long int', but argument 3 has type 'ssize_t' Signed-off-by: David Howells <dhowells@redhat.com> cc: Trond Myklebust <Trond.Myklebust@netapp.com> cc: linux-nfs@vger.kernel.org Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-06-15NFSv4.1: fix break condition in pnfs_find_lsegBenny Halevy
The break condition to skip out of the loop got broken when cmp_layout was change. Essentially, we want to stop looking once we know no layout on the remainder of the list can match the first byte of the looked-up range. Reported-by: Peng Tao <peng_tao@emc.com> Signed-off-by: Benny Halevy <benny@tonian.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-06-15nfs4.1: fix several problems with _pnfs_return_layoutFred Isaman
_pnfs_return_layout had the following problems: - it did not call pnfs_free_lseg_list on all paths - it unintentionally did a forgetful return when there was no outstanding io - it raced with concurrent LAYOUTGETS Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-06-15NFSv4.1: allow zero fh array in filelayout decode layoutAndy Adamson
Signed-off-by: Andy Adamson <andros@netapp.com> cc:stable@kernel.org [2.6.39] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-06-15NFSv4.1: allow nfs_fhget to succeed with mounted on fileidAndy Adamson
Commit 28331a46d88459788c8fca72dbb0415cd7f514c9 "Ensure we request the ordinary fileid when doing readdirplus" changed the meaning of NFS_ATTR_FATTR_FILEID which used to be set when FATTR4_WORD1_MOUNTED_ON_FILED was requested. Allow nfs_fhget to succeed with only a mounted on fileid when crossing a mountpoint or a referral. Ask for the fileid of the absent file system if mounted_on_fileid is not supported. Signed-off-by: Andy Adamson <andros@netapp.com> cc:stable@kernel.org [2.6.39] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-06-15NFSv4.1: Fix a refcounting issue in the pNFS device id cacheTrond Myklebust
When we add something to the global device id cache, we need to bump the reference count, so that the cache itself holds a reference. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-06-15NFSv4.1: deprecate headerpadsz in CREATE_SESSIONBenny Halevy
We don't support header padding yet so better off ditching it Reported-by: Sid Moore <learnmost@gmail.com> Signed-off-by: Benny Halevy <benny@tonian.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-06-15NFS41: do not update isize if inode needs layoutcommitPeng Tao
nfs_update_inode will update isize if there is no queued pages. For pNFS, layoutcommit is supposed to change file size on server, the same effect as queued pages. nfs_update_inode may be called when dirty pages are written back (nfsi->npages==0) but layoutcommit is not sent, and it will change client file size according to server file size. Then client ends up losing what it just writes back in pNFS path. So we should skip updating client file size if file needs layoutcommit. Signed-off-by: Peng Tao <peng_tao@emc.com> Cc: stable@kernel.org [2.6.39] Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-06-15NFS: fix umount of pnfs filesystemsWeston Andros Adamson
Unmounting a pnfs filesystem hangs using filelayout and possibly others. This fixes the use of the rcu protected node by making use of a new 'tmpnode' for the temporary purge list. Also, the spinlock shouldn't be held when calling synchronize_rcu(). Signed-off-by: Weston Andros Adamson <dros@netapp.com> Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-06-08writeback: remove .nonblocking and .encountered_congestionWu Fengguang
Remove two unused struct writeback_control fields: .encountered_congestion (completely unused) .nonblocking (never set, checked/showed in XFS,NFS/btrfs) The .for_background check in nfs_write_inode() is also removed btw, as .for_background implies WB_SYNC_NONE. Reviewed-by: Jan Kara <jack@suse.cz> Proposed-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
2011-05-29Merge branch 'pnfs-submit' of git://git.open-osd.org/linux-open-osdLinus Torvalds
* 'pnfs-submit' of git://git.open-osd.org/linux-open-osd: (32 commits) pnfs-obj: pg_test check for max_io_size NFSv4.1: define nfs_generic_pg_test NFSv4.1: use pnfs_generic_pg_test directly by layout driver NFSv4.1: change pg_test return type to bool NFSv4.1: unify pnfs_pageio_init functions pnfs-obj: objlayout_encode_layoutcommit implementation pnfs: encode_layoutcommit pnfs-obj: report errors and .encode_layoutreturn Implementation. pnfs: encode_layoutreturn pnfs: layoutret_on_setattr pnfs: layoutreturn pnfs-obj: osd raid engine read/write implementation pnfs: support for non-rpc layout drivers pnfs-obj: define per-inode private structure pnfs: alloc and free layout_hdr layoutdriver methods pnfs-obj: objio_osd device information retrieval and caching pnfs-obj: decode layout, alloc/free lseg pnfs-obj: pnfs_osd XDR client implementation pnfs-obj: pnfs_osd XDR definitions pnfs-obj: objlayoutdriver module skeleton ...
2011-05-29Merge branch 'nfs-for-2.6.40' of ↵Linus Torvalds
git://git.linux-nfs.org/projects/trondmy/nfs-2.6 * 'nfs-for-2.6.40' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: SUNRPC: Support for RPC over AF_LOCAL transports SUNRPC: Remove obsolete comment SUNRPC: Use AF_LOCAL for rpcbind upcalls SUNRPC: Clean up use of curly braces in switch cases NFS: Revert NFSROOT default mount options SUNRPC: Rename xs_encode_tcp_fragment_header() nfs,rcu: convert call_rcu(nfs_free_delegation_callback) to kfree_rcu() nfs41: Correct offset for LAYOUTCOMMIT NFS: nfs_update_inode: print current and new inode size in debug output NFSv4.1: Fix the handling of NFS4ERR_SEQ_MISORDERED errors NFSv4: Handle expired stateids when the lease is still valid SUNRPC: Deal with the lack of a SYN_SENT sk->sk_state_change callback...
2011-05-29pnfs-obj: pg_test check for max_io_sizeBoaz Harrosh
Implement pg_test vector to test for max IO sizes. We calculate a max_io_size member only once, and cache it in lseg so to not do so on every page insert. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> [simplify logic] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29NFSv4.1: define nfs_generic_pg_testBoaz Harrosh
By default, unless pnfs is used coalesce pages until pg_bsize (rsize or wsize) is reached. pnfs layout drivers define their own pg_test methods that use pnfs_generic_pg_test and need to define their own I/O size limits (e.g. based on the file stripe size). [Move a check from nfs_pageio_do_add_request to nfs_generic_pg_test] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29NFSv4.1: use pnfs_generic_pg_test directly by layout driverBenny Halevy
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29NFSv4.1: change pg_test return type to boolBenny Halevy
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29NFSv4.1: unify pnfs_pageio_init functionsBenny Halevy
Use common code for pnfs_pageio_init_{read,write} and use a common generic pg_test function. Note that this function always assumes the the layout driver's pg_test method is implemented. [Fix BUG] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com>
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