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Enable tuning of ZVOL open timeout value 

The default timeout for ZVOL opens may not be sufficient for all cases,
so we should enable the value to be more easily tuned to account for
systems where the default value is insufficient.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Prakash Surya <prakash.surya@delphix.com>
Closes #15023
This commit is contained in:
Prakash Surya 2023-06-30 11:34:05 -07:00 committed by GitHub
parent ac8ae18d22
commit 945e39fc3a
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1 changed files with 6 additions and 1 deletions
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7
module/os/linux/zfs/zvol_os.c
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@ -54,7 +54,7 @@ static unsigned int zvol_prefetch_bytes = (128 * 1024);
static unsigned long zvol_max_discard_blocks = 16384; static unsigned long zvol_max_discard_blocks = 16384;
#ifndef HAVE_BLKDEV_GET_ERESTARTSYS #ifndef HAVE_BLKDEV_GET_ERESTARTSYS
static const unsigned int zvol_open_timeout_ms = 1000; static unsigned int zvol_open_timeout_ms = 1000;
#endif #endif
static unsigned int zvol_threads = 0; static unsigned int zvol_threads = 0;
@ -1612,4 +1612,9 @@ MODULE_PARM_DESC(zvol_blk_mq_blocks_per_thread,
"Process volblocksize blocks per thread"); "Process volblocksize blocks per thread");
#endif #endif
#ifndef HAVE_BLKDEV_GET_ERESTARTSYS
module_param(zvol_open_timeout_ms, uint, 0644);
MODULE_PARM_DESC(zvol_open_timeout_ms, "Timeout for ZVOL open retries");
#endif
/* END CSTYLED */ /* END CSTYLED */