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zvol: Implement zvol threading as a Property

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Currently, zvol threading can be switched through the zvol_request_sync
module parameter system-wide. By making it a zvol property, zvol
threading can be switched per zvol.

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
Closes #15409
This commit is contained in:
Ameer Hamza
2023-10-25 02:53:27 +05:00
committed by Brian Behlendorf
parent dbe839a9ca
commit 60387facd2
9 changed files with 51 additions and 2 deletions
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man/man7/zfsprops.7
+12
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@@ -1197,6 +1197,18 @@ are equivalent to the
and
.Sy noexec
mount options.
.It Sy volthreading Ns = Ns Sy on Ns | Ns Sy off
Controls internal zvol threading.
The value
.Sy off
disables zvol threading, and zvol relies on application threads.
The default value is
.Sy on ,
which enables threading within a zvol.
Please note that this property will be overridden by
.Sy zvol_request_sync
module parameter.
This property is only applicable to Linux.
.It Sy filesystem_limit Ns = Ns Ar count Ns | Ns Sy none
Limits the number of filesystems and volumes that can exist under this point in
the dataset tree.