| SRP_TMO_VALID(9) | SCSI mid layer | SRP_TMO_VALID(9) |
NAME¶
srp_tmo_valid - check timeout combination validity
SYNOPSIS¶
int srp_tmo_valid(int reconnect_delay, int fast_io_fail_tmo, int dev_loss_tmo);
ARGUMENTS¶
reconnect_delay
Reconnect delay in seconds.
fast_io_fail_tmo
Fast I/O fail timeout in seconds.
dev_loss_tmo
Device loss timeout in seconds.
DESCRIPTION¶
The combination of the timeout parameters must be such that SCSI commands are finished in a reasonable time. Hence do not allow the fast I/O fail timeout to exceed SCSI_DEVICE_BLOCK_MAX_TIMEOUT nor allow dev_loss_tmo to exceed that limit if failing I/O fast has been disabled. Furthermore, these parameters must be such that multipath can detect failed paths timely. Hence do not allow all three parameters to be disabled simultaneously.
AUTHORS¶
James Bottomley <James.Bottomley@hansenpartnership.com>
Author.
Rob Landley <rob@landley.net>
Author.
COPYRIGHT¶
| May 2024 | Kernel Hackers Manual 2.6. |