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freebsd-src/sys/geom
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santhoshkumar-mani d3eb9d3db3 bios: Don't keep sending BIO_FLUSH after first ENOTSUPP. 
When a storage device reports that it does not support cache flush, the
GEOM disk layer by default returns ENOTSUPP in response to a BIO_FLUSH
command.

On AWS, local volumes do not advertise themselves as having write-cache
enabled.  When they are selected for L3 on all HDD nodes, the L3
subsystem may inadvertently kick these L3 devices if a BIO_FLUSH command
fails with an ENOTSUPP return code.  The fix is to make GEOM disk return
success (0) when this condition occurs and add a sysctl to make this
error handling config-driven

Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/710
2023-07-01 11:14:49 -06:00
..
bde spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
cache spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
concat spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
eli spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
gate spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
journal spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
label spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
linux_lvm spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
mirror spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
mountver spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
multipath spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
nop spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
part spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
raid spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
raid3 spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
shsec spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
stripe spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
union spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
uzip spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
vinum spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
virstor spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
zero spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
geom.h Adjust g_waitidle() visibility and definition 2022-08-02 21:11:10 +03:00
geom_bsd_enc.c
geom_ccd.c spdx: The BSD-2-Clause-NetBSD identifier is obsolete, drop -NetBSD 2023-05-12 10:44:04 -06:00
geom_ctl.c Clarify when GEOM utilities exit with success or failure. 2022-07-16 10:26:51 -07:00
geom_ctl.h Define a constant for the maximum number of GEOM_CTL arguments. 2019-02-20 17:07:08 +00:00
geom_dbg.h spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
geom_dev.c GEOM: Remove redundant NULL pointer check before g_free() 2022-12-28 23:34:09 +08:00
geom_disk.c bios: Don't keep sending BIO_FLUSH after first ENOTSUPP. 2023-07-01 11:14:49 -06:00
geom_disk.h Delay GEOM disk_create() until CAM periph probe completes. 2022-07-14 16:17:36 -04:00
geom_dump.c GEOM: Introduce partial confxml API 2022-03-12 11:55:52 -05:00
geom_event.c Adjust g_waitidle() visibility and definition 2022-08-02 21:11:10 +03:00
geom_flashmap.c spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
geom_flashmap.h geom: clean up empty lines in .c and .h files 2020-09-01 22:14:09 +00:00
geom_int.h GEOM: Introduce partial confxml API 2022-03-12 11:55:52 -05:00
geom_io.c Move kstack_contains() and GET_STACK_USAGE() to MD machine/stack.h 2023-02-02 00:59:26 +02:00
geom_kern.c GEOM: Relax direct dispatch for GEOM threads. 2022-01-28 14:21:21 -05:00
geom_map.c spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
geom_redboot.c spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
geom_slice.c GEOM: Remove redundant NULL pointer check before g_free() 2022-12-28 23:34:09 +08:00
geom_slice.h
geom_subr.c Adjust function definition in geom_subr.c to avoid clang 15 warnings 2022-07-26 19:59:56 +02:00
geom_vfs.c spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
geom_vfs.h spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
notes