diff options
| author | Boris Protopopov <[email protected]> | 2014-03-22 05:07:14 -0400 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2016-03-10 09:49:22 -0800 |
| commit | a0bd735adb1b1eb81fef10b4db102ee051c4d4ff (patch) | |
| tree | 121fcde3000a116f0c33143b28a530a87fd6073a /module/zfs/dmu_send.c | |
| parent | eb0856779f7b57162c9179f238104f6d6e150745 (diff) | |
Add support for asynchronous zvol minor operations
zfsonlinux issue #2217 - zvol minor operations: check snapdev
property before traversing snapshots of a dataset
zfsonlinux issue #3681 - lock order inversion between zvol_open()
and dsl_pool_sync()...zvol_rename_minors()
Create a per-pool zvol taskq for asynchronous zvol tasks.
There are a few key design decisions to be aware of.
* Each taskq must be single threaded to ensure tasks are always
processed in the order in which they were dispatched.
* There is a taskq per-pool in order to keep the pools independent.
This way if one pool is suspended it will not impact another.
* The preferred location to dispatch a zvol minor task is a sync
task. In this context there is easy access to the spa_t and
minimal error handling is required because the sync task must
succeed.
Support for asynchronous zvol minor operations address issue #3681.
Signed-off-by: Boris Protopopov <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #2217
Closes #3678
Closes #3681
Diffstat (limited to 'module/zfs/dmu_send.c')
| -rw-r--r-- | module/zfs/dmu_send.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/module/zfs/dmu_send.c b/module/zfs/dmu_send.c index 6585e4778..613770e10 100644 --- a/module/zfs/dmu_send.c +++ b/module/zfs/dmu_send.c @@ -24,6 +24,7 @@ * Copyright 2011 Nexenta Systems, Inc. All rights reserved. * Copyright (c) 2014, Joyent, Inc. All rights reserved. * Copyright (c) 2011, 2014 by Delphix. All rights reserved. + * Copyright (c) 2016 Actifio, Inc. All rights reserved. */ #include <sys/dmu.h> @@ -54,6 +55,7 @@ #include <sys/dsl_bookmark.h> #include <sys/zfeature.h> #include <sys/bqueue.h> +#include <sys/zvol.h> /* Set this tunable to TRUE to replace corrupt data with 0x2f5baddb10c */ int zfs_send_corrupt_data = B_FALSE; @@ -2646,6 +2648,7 @@ dmu_recv_end_sync(void *arg, dmu_tx_t *tx) dsl_dataset_phys(ds)->ds_flags &= ~DS_FLAG_INCONSISTENT; } drc->drc_newsnapobj = dsl_dataset_phys(drc->drc_ds)->ds_prev_snap_obj; + zvol_create_minors(dp->dp_spa, drc->drc_tofs, B_TRUE); /* * Release the hold from dmu_recv_begin. This must be done before * we return to open context, so that when we free the dataset's dnode, |