zfs/man/man5/spl-module-parameters.5

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'\" te
.\"
.\" Copyright 2013 Turbo Fredriksson <turbo@bayour.com>. All rights reserved.
.\"
.TH SPL-MODULE-PARAMETERS 5 "Nov 18, 2013"
.SH NAME
spl\-module\-parameters \- SPL module parameters
.SH DESCRIPTION
.sp
.LP
Description of the different parameters to the SPL module.
.SS "Module parameters"
.sp
.LP
.sp
.ne 2
.na
\fBspl_debug_subsys\fR (ulong)
.ad
.RS 12n
Subsystem debugging level mask.
.sp
Default value: \fB~0\fR.
.RE
.sp
.ne 2
.na
\fBspl_debug_mask\fR (ulong)
.ad
.RS 12n
Debugging level mask.
.sp
Default value: \fB8 | 10 | 4 | 20\fR (SD_ERROR | SD_EMERG | SD_WARNING | SD_CONSOLE).
.RE
.sp
.ne 2
.na
\fBspl_debug_printk\fR (ulong)
.ad
.RS 12n
Console printk level mask.
.sp
Default value: \fB8 | 10 | 4 | 20\fR (SD_ERROR | SD_EMERG | SD_WARNING | SD_CONSOLE).
.RE
.sp
.ne 2
.na
\fBspl_debug_mb\fR (int)
.ad
.RS 12n
Total debug buffer size.
.sp
Default value: \fB-1\fR.
.RE
.sp
.ne 2
.na
\fBspl_debug_panic_on_bug\fR (int)
.ad
.RS 12n
Panic on BUG
.sp
Use \fB1\fR for yes and \fB0\fR for no (default).
.RE
.sp
.ne 2
.na
\fBspl_kmem_cache_expire\fR (uint)
.ad
.RS 12n
By age (0x1) or low memory (0x2)
.sp
Default value: \fB0\fR.
.RE
.sp
.ne 2
.na
\fBspl_hostid\fR (ulong)
.ad
.RS 12n
The system hostid.
.sp
Default value: \fB0xFFFFFFFF\fR (an invalid hostid!)
.RE
.sp
.ne 2
.na
\fBspl_hostid_path\fR (charp)
.ad
.RS 12n
The system hostid file
.sp
Default value: \fB/etc/hostid\fR.
.RE
.sp
.ne 2
.na
\fBmutex_spin_max\fR (int)
.ad
.RS 12n
Spin a maximum of N times to acquire lock
.sp
.ne 2
.na
\fBPossible values:\fR
.sp
.RS 12n
\fB0\fR Never spin when trying to acquire lock
.sp
\fB-1\fR Spin until acquired or holder yields without dropping lock
.sp
\fB1-MAX_INT\fR Spin for N attempts before sleeping for lock
.RE
.sp
.ne -4
Default value: \fB0\fR.