Activity
From 03/28/2018 to 04/26/2018
04/26/2018
- 09:37 PM Bug #23891 (Duplicate): unable to perform a "rbd-nbd map" without forgroud flag
- I would like to map a rbd using rbd-nbd. Without adding the foreground flag it is not possible to map the device.
... - 04:26 PM Bug #23888 (Fix Under Review): [rbd-mirror] asok hook for image replayer not re-registered after ...
- *PR*: https://github.com/ceph/ceph/pull/21682
- 02:48 PM Bug #23888 (Resolved): [rbd-mirror] asok hook for image replayer not re-registered after bootstrap
- If the remote image is not primary, if the local image is primary, if the images have split-brained, or other error c...
- 04:22 PM Bug #23853: Inefficent implementation - very long query time for "rbd ls -l" queries
- @Marc: can you double-check that you have the debuginfo packages installed? The perf graph (attached) shows the vast ...
- 04:09 PM Bug #23853: Inefficent implementation - very long query time for "rbd ls -l" queries
- Sorry, the results exceed the maximum file upload limit:
I uploaded the file to my personal server:
https://www... - 11:54 AM Bug #23853 (Need More Info): Inefficent implementation - very long query time for "rbd ls -l" que...
- @Marc: can you re-run this using the following the steps (making sure you have the debuginfo packages installed as we...
- 10:36 AM Bug #23853: Inefficent implementation - very long query time for "rbd ls -l" queries
- Added perf data, created by :...
04/25/2018
- 11:42 PM Bug #23876 (Fix Under Review): [rbd-mirror] local tag predecessor mirror uuid is incorrectly repl...
- *PR*: https://github.com/ceph/ceph/pull/21657
- 11:39 PM Bug #23876 (Resolved): [rbd-mirror] local tag predecessor mirror uuid is incorrectly replaced wit...
- The tag predecessor mirror uuid that is retrieved from the remote peer is incorrectly converted to the remote mirror'...
- 03:24 PM Bug #23853: Inefficent implementation - very long query time for "rbd ls -l" queries
- According to this, latency between client and osd should not be the problem:
(according to the high amount of user t... - 02:01 PM Bug #23853: Inefficent implementation - very long query time for "rbd ls -l" queries
- If i invoke this without parallel thread execution i get the following result:...
- 12:27 PM Bug #23853 (Resolved): Inefficent implementation - very long query time for "rbd ls -l" queries
- We are trying to integrate a storage repository in xenserver.
*Summary:*
The slowness is a real pain for us, be...
04/24/2018
04/20/2018
- 03:33 PM Bug #23809 (Fix Under Review): [test] output formatting tests are heavily broken
- *PR*: https://github.com/ceph/ceph/pull/21564
- 02:51 PM Bug #23809 (Resolved): [test] output formatting tests are heavily broken
- Unfortunately, PR 19117 broke numerous RBD tests that expected certain output formatting since the test was merged w/...
- 12:51 PM Subtask #18753 (Fix Under Review): rbd-mirror HA: create teuthology thrasher for rbd-mirror
- 12:51 PM Subtask #18753: rbd-mirror HA: create teuthology thrasher for rbd-mirror
- *PR*: https://github.com/ceph/ceph/pull/21541
04/18/2018
- 08:35 PM Bug #23789 (Resolved): luminous: "cluster [WRN] Manager daemon x is unresponsive. No standby daem...
- This is v12.2.5 QE validation
Intermediate issue, if possible would be good to fix/retry/lower error level so it d...
04/17/2018
- 07:02 PM Bug #23526 (Resolved): "Message too long" error when appending journal
- 07:02 PM Backport #23545 (Resolved): luminous: "Message too long" error when appending journal
- 04:28 PM Backport #23545: luminous: "Message too long" error when appending journal
- Nathan Cutler wrote:
> https://github.com/ceph/ceph/pull/21216
merged
04/15/2018
- 01:54 AM Support #23677: rbd mirror: is there a method to calculate data size that have not been mirror to...
- @Jason Dillaman, OK,got it.Thank you!
04/13/2018
- 03:12 PM Support #23677: rbd mirror: is there a method to calculate data size that have not been mirror to...
- liuzhong chen wrote:
> IO,it would not be flushed.It also means that these entry will be not replayed for non-primar... - 02:35 PM Support #23677: rbd mirror: is there a method to calculate data size that have not been mirror to...
- liuzhong chen wrote:
> @Jason Dillaman, OK,understanded.Thank you very much.
> Another quetion, this issue http://t... - 02:34 PM Support #23677: rbd mirror: is there a method to calculate data size that have not been mirror to...
- @Jason Dillaman, OK,understanded.Thank you very much.
Another quetion, this issue [[http://tracker.ceph.com/issues/2... - 01:21 PM Support #23677: rbd mirror: is there a method to calculate data size that have not been mirror to...
- @liuzhong chen: There is no such support right now. The "entries_behind_master" is just a simple counter of the numbe...
- 03:00 AM Support #23677: rbd mirror: is there a method to calculate data size that have not been mirror to...
- @Jason Dillaman,I have tried some method but can't.Do you have any advise.Thank you!
- 01:20 PM Subtask #18788 (Resolved): rbd-mirror A/A: integrate distribution policy with proxied InstanceRep...
- *PR*: https://github.com/ceph/ceph/pull/21300
04/12/2018
- 12:26 PM Support #23677 (Closed): rbd mirror: is there a method to calculate data size that have not been ...
- When I use rbd mirror between two cluster, is there a method to calculate data size that have not been mirror to non-...
- 11:19 AM Backport #23640 (In Progress): luminous: rbd: import with option --export-format fails to protect...
- Already included in backport PR https://github.com/ceph/ceph/pull/21316 (along with tracker http://tracker.ceph.com/...
04/11/2018
- 03:09 PM Bug #23597 (Resolved): fsx writethrough test case failures
- 12:15 PM Bug #23629 (Closed): RBD corruption after power off
- Great, no worries.
- 08:55 AM Bug #23629: RBD corruption after power off
- @Jason: my bad, this helped, thanks a lot. We went from Jewel to Luminous, so we skipped Kraken altogether, that's wh...
04/10/2018
- 09:25 PM Bug #23499 (Resolved): test_admin_socket.sh may fail on wait_for_clean
- 09:25 PM Backport #23507 (Resolved): luminous: test_admin_socket.sh may fail on wait_for_clean
- 07:56 PM Backport #23507: luminous: test_admin_socket.sh may fail on wait_for_clean
- Nathan Cutler wrote:
> https://github.com/ceph/ceph/pull/21124
merged - 09:24 PM Bug #23502 (Resolved): is_qemu_running in qemu_rebuild_object_map.sh and qemu_dynamic_features.sh...
- 09:24 PM Backport #23524 (Resolved): luminous: is_qemu_running in qemu_rebuild_object_map.sh and qemu_dyna...
- 07:56 PM Backport #23524: luminous: is_qemu_running in qemu_rebuild_object_map.sh and qemu_dynamic_feature...
- Nathan Cutler wrote:
> https://github.com/ceph/ceph/pull/21192
merged - 09:24 PM Bug #23528 (Resolved): rbd-nbd: EBUSY when do map
- 09:23 PM Backport #23542 (Resolved): luminous: rbd-nbd: EBUSY when do map
- 07:55 PM Backport #23542: luminous: rbd-nbd: EBUSY when do map
- Nathan Cutler wrote:
> https://github.com/ceph/ceph/pull/21230
merged - 07:49 PM Bug #23629 (Need More Info): RBD corruption after power off
- @Josef: this sounds like your images have the exclusive-lock feature enabled but your OpenStack Ceph user does not ha...
- 03:12 PM Bug #23629 (Closed): RBD corruption after power off
- Hello,
we have ran into a nasty bug regarding RBD in Ceph Luminous - we have encountered this across multiple diffe... - 05:54 PM Backport #23640 (Resolved): luminous: rbd: import with option --export-format fails to protect sn...
- https://github.com/ceph/ceph/pull/21316
- 05:53 PM Backport #23631 (Resolved): luminous: python bindings fixes and improvements
- https://github.com/ceph/ceph/pull/21725
- 05:46 PM Bug #23609 (Pending Backport): python bindings fixes and improvements
- 12:43 PM Backport #23604: luminous: Discard ops should flush affected objects from in-memory cache
- @Prashant: just assign this one to me and I'll handle the luminous backport.
- 01:55 AM Backport #23604 (Need More Info): luminous: Discard ops should flush affected objects from in-mem...
- The src/librbd/cache/ObjectCacherObjectDispatch.cc file is missing in luminous branch. We need to merge this file to ...
- 12:33 PM Bug #23038 (Pending Backport): rbd: import with option --export-format fails to protect snapshot
- 03:42 AM Backport #23607 (In Progress): luminous: import-diff failed: (33) Numerical argument out of domai...
- https://github.com/ceph/ceph/pull/21316
04/09/2018
- 03:35 PM Bug #23597 (Fix Under Review): fsx writethrough test case failures
- 03:35 PM Bug #23597: fsx writethrough test case failures
- *PR*: https://github.com/ceph/ceph/pull/21308
- 10:33 AM Bug #23597: fsx writethrough test case failures
- Actually, retesting different option combinations, it looks like only `rbd cache = true` is important.
- 02:53 PM Bug #23609 (Fix Under Review): python bindings fixes and improvements
- 02:53 PM Bug #23609: python bindings fixes and improvements
- PR: https://github.com/ceph/ceph/pull/21304
- 02:53 PM Bug #23609 (Resolved): python bindings fixes and improvements
- The current RBD python bindings has the following issues:
* dealing with data_pool string fails in python 3
* tim... - 02:31 PM Backport #23608 (Closed): jewel: import-diff failed: (33) Numerical argument out of domain - if i...
- 02:31 PM Backport #23607 (Resolved): luminous: import-diff failed: (33) Numerical argument out of domain -...
- https://github.com/ceph/ceph/pull/21316
- 02:29 PM Backport #23605 (Closed): jewel: Discard ops should flush affected objects from in-memory cache
- 02:29 PM Backport #23604 (Resolved): luminous: Discard ops should flush affected objects from in-memory cache
- https://github.com/ceph/ceph/pull/23594
- 01:22 PM Bug #18844 (Pending Backport): import-diff failed: (33) Numerical argument out of domain - if ima...
04/08/2018
- 08:31 PM Bug #23597 (In Progress): fsx writethrough test case failures
- Per Mykola:...
- 08:05 PM Bug #23597 (Resolved): fsx writethrough test case failures
- http://qa-proxy.ceph.com/teuthology/yuriw-2018-04-05_21:02:08-rbd-wip-yuriw-master-4.5.18-distro-basic-smithi/2358072...
- 08:24 PM Bug #23548 (Pending Backport): Discard ops should flush affected objects from in-memory cache
- 08:03 PM Bug #21815 (Resolved): librbd: cannot copy all image-metas if we have more than 64 key/value pairs
- 08:03 PM Backport #22394 (Resolved): jewel: librbd: cannot copy all image-metas if we have more than 64 ke...
- 04:37 PM Backport #23546 (Resolved): jewel: "Message too long" error when appending journal
- 04:26 PM Backport #23543 (Resolved): jewel: rbd-nbd: EBUSY when do map
- 04:25 PM Bug #21814 (Resolved): librbd: cannot clone all image-metas if we have more than 64 key/value pairs
- 04:25 PM Backport #22396 (Resolved): jewel: librbd: cannot clone all image-metas if we have more than 64 k...
- 04:24 PM Bug #21319 (Resolved): [cli] mirror "getter" commands will fail if mirroring has never been enabled
- 04:24 PM Backport #21442 (Resolved): jewel: [cli] mirror "getter" commands will fail if mirroring has neve...
- 04:23 PM Bug #20571 (Resolved): rbd-mirror: cluster watcher should ignore -EPERM errors against reading 'r...
- 04:23 PM Backport #20637 (Resolved): jewel: rbd-mirror: cluster watcher should ignore -EPERM errors agains...
- 04:23 PM Bug #21670 (Resolved): Possible deadlock in 'list_children' when refresh is required
- 04:22 PM Backport #21689 (Resolved): jewel: Possible deadlock in 'list_children' when refresh is required
- 04:22 PM Bug #21894 (Resolved): [rbd-mirror] peer cluster connections should filter out command line optio...
- 04:22 PM Backport #21915 (Resolved): jewel: [rbd-mirror] peer cluster connections should filter out comman...
- 04:21 PM Bug #22716 (Resolved): rbd snap create/rm takes 60s long
- 04:20 PM Backport #22810 (Resolved): jewel: rbd snap create/rm takes 60s long
- 04:20 PM Bug #21797 (Resolved): [object map] removing a large image (~100TB) with an object map may result...
- 04:20 PM Backport #21867 (Resolved): jewel: [object map] removing a large image (~100TB) with an object ma...
- 04:19 PM Bug #23285 (Resolved): parent blocks are still seen after a whole-object discard
- 04:19 PM Backport #23305 (Resolved): jewel: parent blocks are still seen after a whole-object discard
- 04:18 PM Backport #23525 (Resolved): jewel: is_qemu_running in qemu_rebuild_object_map.sh and qemu_dynamic...
- 04:17 PM Bug #22945 (Resolved): [journal] allocating a new tag after acquiring the lock should use on-disk...
- 04:16 PM Backport #23012 (Resolved): jewel: [journal] allocating a new tag after acquiring the lock should...
- 04:15 PM Bug #22485 (Resolved): [test] rbd-mirror split brain test case can have a false-positive failure ...
- 04:15 PM Backport #22578 (Resolved): jewel: [test] rbd-mirror split brain test case can have a false-posit...
- 04:12 PM Backport #23508 (Resolved): jewel: test_admin_socket.sh may fail on wait_for_clean
- 04:11 PM Bug #23068 (Resolved): TestLibRBD.RenameViaLockOwner may still fail with -ENOENT
- 03:29 PM Backport #23153 (Resolved): jewel: TestLibRBD.RenameViaLockOwner may still fail with -ENOENT
04/05/2018
- 10:49 PM Bug #22872: "rbd trash purge --threshold" should support data pool
- @Mahati: I would think it should just be implicit. It could loop through all the trashed images whose deferment end t...
04/04/2018
- 06:56 PM Bug #18844 (Fix Under Review): import-diff failed: (33) Numerical argument out of domain - if ima...
- *PR*: https://github.com/ceph/ceph/pull/21249
- 06:15 PM Bug #18844 (In Progress): import-diff failed: (33) Numerical argument out of domain - if image si...
- If the 'rbd export-diff' is corrupt, it can result in that error:...
- 05:20 PM Bug #23548 (Fix Under Review): Discard ops should flush affected objects from in-memory cache
- *PR*: https://github.com/ceph/ceph/pull/21248
- 01:05 AM Bug #23548 (Resolved): Discard ops should flush affected objects from in-memory cache
- When using the in-memory cache in writeback mode, it's possible that an overlapping discard immediately after a write...
- 09:39 AM Bug #22872: "rbd trash purge --threshold" should support data pool
- Does it mean support an option like:
rbd trash purge <pool-name> --threshold '<x>' --data-pool=<data-pool-name>
... - 06:47 AM Feature #23550 (Resolved): [group]add rbd group snap rollback CLI/API
- Maybe we need `group snap rollback` method.
- 06:08 AM Backport #23543 (In Progress): jewel: rbd-nbd: EBUSY when do map
- https://github.com/ceph/ceph/pull/21232
- 02:41 AM Backport #23542 (In Progress): luminous: rbd-nbd: EBUSY when do map
- https://github.com/ceph/ceph/pull/21230
04/03/2018
- 11:35 PM Backport #22396 (In Progress): jewel: librbd: cannot clone all image-metas if we have more than 6...
- 09:08 AM Backport #22396 (Need More Info): jewel: librbd: cannot clone all image-metas if we have more tha...
- non-trivial backport - not clear what is to be done, since the master PR touches files [1] that don't exist in jewel
... - 11:10 PM Backport #21442 (In Progress): jewel: [cli] mirror "getter" commands will fail if mirroring has n...
- 10:01 PM Backport #20637 (In Progress): jewel: rbd-mirror: cluster watcher should ignore -EPERM errors aga...
- 09:44 PM Backport #21689 (In Progress): jewel: Possible deadlock in 'list_children' when refresh is required
- 09:41 PM Backport #21915 (In Progress): jewel: [rbd-mirror] peer cluster connections should filter out com...
- 03:57 PM Backport #22810 (In Progress): jewel: rbd snap create/rm takes 60s long
- 03:57 PM Backport #21867 (In Progress): jewel: [object map] removing a large image (~100TB) with an object...
- 03:56 PM Backport #23305 (In Progress): jewel: parent blocks are still seen after a whole-object discard
- 09:21 AM Backport #23305 (Need More Info): jewel: parent blocks are still seen after a whole-object discard
- backport request unclear - master PR touches code that doesn't exist in jewel
- 02:15 PM Backport #23545 (In Progress): luminous: "Message too long" error when appending journal
- 11:56 AM Backport #23545 (Resolved): luminous: "Message too long" error when appending journal
- https://github.com/ceph/ceph/pull/21216
- 02:13 PM Backport #23546 (In Progress): jewel: "Message too long" error when appending journal
- 11:56 AM Backport #23546 (Resolved): jewel: "Message too long" error when appending journal
- https://github.com/ceph/ceph/pull/21215
- 01:21 PM Cleanup #17891 (Resolved): Creation of rbd image with format 1 should be disallowed
- 11:56 AM Backport #23543 (Resolved): jewel: rbd-nbd: EBUSY when do map
- https://github.com/ceph/ceph/pull/21232
- 11:56 AM Backport #23542 (Resolved): luminous: rbd-nbd: EBUSY when do map
- https://github.com/ceph/ceph/pull/21230
- 11:39 AM Bug #23528: rbd-nbd: EBUSY when do map
- *PR*: https://github.com/ceph/ceph/pull/21142
- 11:39 AM Bug #23528 (Pending Backport): rbd-nbd: EBUSY when do map
- 11:38 AM Bug #23526 (Pending Backport): "Message too long" error when appending journal
- 09:23 AM Backport #23525 (In Progress): jewel: is_qemu_running in qemu_rebuild_object_map.sh and qemu_dyna...
- 09:17 AM Backport #23012 (In Progress): jewel: [journal] allocating a new tag after acquiring the lock sho...
- 09:13 AM Backport #22578 (In Progress): jewel: [test] rbd-mirror split brain test case can have a false-po...
- 09:00 AM Backport #22394 (In Progress): jewel: librbd: cannot copy all image-metas if we have more than 64...
- 03:26 AM Backport #23524 (In Progress): luminous: is_qemu_running in qemu_rebuild_object_map.sh and qemu_d...
- https://github.com/ceph/ceph/pull/21192
- 03:18 AM Bug #23516: [rbd-mirror] entries_behind_master will not be zero after mirror over
- Thank you! This method can flush it.But now need to write a script to judge the mirror is over automatic,so I wonder ...
04/02/2018
- 03:48 PM Bug #23516: [rbd-mirror] entries_behind_master will not be zero after mirror over
- We'll get this status artifact fixed. You can use the admin socket to the rbd-mirror daemon to force a flush if desir...
- 02:17 AM Bug #23516: [rbd-mirror] entries_behind_master will not be zero after mirror over
- Another question is if I use fio to write for 60s.Is there any other parameter to indicate that the mirror is over?
... - 02:09 AM Bug #23516: [rbd-mirror] entries_behind_master will not be zero after mirror over
- Thank you! @Jason Dillaman
I have anther two question.I find the non-primary image used volumes is equal to primary ...
03/31/2018
- 07:14 PM Bug #23526 (Fix Under Review): "Message too long" error when appending journal
- PR: https://github.com/ceph/ceph/pull/21157
03/30/2018
- 08:36 PM Bug #22932 (Resolved): [rbd-mirror] infinite loop is possible when formatting the status message
- 08:35 PM Backport #22965 (Resolved): jewel: [rbd-mirror] infinite loop is possible when formatting the sta...
- 08:35 PM Bug #11502 (Resolved): "[ FAILED ] TestLibRBD.LockingPP" in rbd-next-distro-basic-mult run
- 08:34 PM Backport #23065 (Resolved): jewel: "[ FAILED ] TestLibRBD.LockingPP" in rbd-next-distro-basic-m...
- 08:33 PM Bug #22120 (Resolved): possible deadlock in various maintenance operations
- 08:33 PM Backport #22175 (Resolved): jewel: possible deadlock in various maintenance operations
- 02:08 PM Bug #23528 (Resolved): rbd-nbd: EBUSY when do map
- When doing rbd-nbd map, if the Ceph service is not available,
the codes will wait on rados.connect(), unless killing... - 02:00 PM Bug #23516: [rbd-mirror] entries_behind_master will not be zero after mirror over
- This is actually just an artifact of IO batching within rbd-mirror. The commit position is only updated after every 3...
- 02:57 AM Bug #23516 (Resolved): [rbd-mirror] entries_behind_master will not be zero after mirror over
- I have two ceph-12.2.4 cluster. Rbd mirror deamon run on cluster two. poolclz/rbdclz on cluster one is primary image ...
- 07:17 AM Bug #23526 (Resolved): "Message too long" error when appending journal
- When appending to a journal object the number of appends sent in one rados operation is not limited and we may hit os...
- 05:04 AM Backport #23525 (Resolved): jewel: is_qemu_running in qemu_rebuild_object_map.sh and qemu_dynamic...
- https://github.com/ceph/ceph/pull/21207
- 05:04 AM Backport #23524 (Resolved): luminous: is_qemu_running in qemu_rebuild_object_map.sh and qemu_dyna...
- https://github.com/ceph/ceph/pull/21192
03/29/2018
- 08:22 PM Feature #23515 (New): [api] lock_acquire should expose setting the optional lock description
- This lock description can be used by iSCSI to describe the lock owner in a manner which can be programatically interp...
- 08:20 PM Feature #23514 (New): [api] image-meta needs to support compare-and-write operation
- iSCSI would like to re-use image-meta to store port state and persistent group reservations. In the case of PGRs, it ...
- 07:45 PM Bug #23502 (Pending Backport): is_qemu_running in qemu_rebuild_object_map.sh and qemu_dynamic_fea...
- 07:01 PM Bug #23502 (Fix Under Review): is_qemu_running in qemu_rebuild_object_map.sh and qemu_dynamic_fea...
- PR: https://github.com/ceph/ceph/pull/21131
- 10:22 AM Bug #23502 (In Progress): is_qemu_running in qemu_rebuild_object_map.sh and qemu_dynamic_features...
- 08:34 AM Bug #23502 (Resolved): is_qemu_running in qemu_rebuild_object_map.sh and qemu_dynamic_features.sh...
- http://qa-proxy.ceph.com/teuthology/smithfarm-2018-03-28_12:50:32-rbd-wip-jewel-backports-distro-basic-smithi/2330979...
- 03:44 PM Bug #23512 (Resolved): Allow removal of RBD images even if the journal is corrupt
- Allow removal of RBD images even if the journal is corrupt
Red Hat bug - https://bugzilla.redhat.com/show_bug.cgi?id... - 02:55 PM Bug #18768 (Closed): rbd rm on empty volumes 2/3 sec per volume
- 02:26 PM Bug #18768: rbd rm on empty volumes 2/3 sec per volume
- This issue was submitted against kernel RBD in Ceph Jewel, but the kernel RBD implementation has changed. The object...
- 12:25 PM Backport #23508 (In Progress): jewel: test_admin_socket.sh may fail on wait_for_clean
- 12:22 PM Backport #23508 (Resolved): jewel: test_admin_socket.sh may fail on wait_for_clean
- https://github.com/ceph/ceph/pull/21125
- 12:24 PM Backport #23507 (In Progress): luminous: test_admin_socket.sh may fail on wait_for_clean
- 12:22 PM Backport #23507 (Resolved): luminous: test_admin_socket.sh may fail on wait_for_clean
- https://github.com/ceph/ceph/pull/21124
- 12:18 PM Bug #23499 (Pending Backport): test_admin_socket.sh may fail on wait_for_clean
- 09:40 AM Bug #23499 (Fix Under Review): test_admin_socket.sh may fail on wait_for_clean
- PR: https://github.com/ceph/ceph/pull/21116
- 08:11 AM Bug #23499 (Resolved): test_admin_socket.sh may fail on wait_for_clean
- See e.g: http://qa-proxy.ceph.com/teuthology/smithfarm-2018-03-28_12:50:32-rbd-wip-jewel-backports-distro-basic-smith...
- 12:14 PM Feature #23505: rbd zero copy
- Hi Jason,
you mean by the following commands?
rbd snap create
rbd snap protect
rbd clone
rbd flatten
rbd s... - 11:54 AM Feature #23505: rbd zero copy
- This is basically implemented via "rbd clone".
- 10:03 AM Feature #23505 (Rejected): rbd zero copy
- rbd zero copy would just ask the Ceph cluster to "copy $rbd image" to a new image. This saves a lot of bandwith back ...
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