Previous commits added trim support for zoned devices. Update HOWTO and man page to describe it. Also add missing description about libzbc I/O engine to HOWTO. Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@xxxxxxx> Reviewed-by: Dmitry Fomichev <dmitry.fomichev@xxxxxxx> --- HOWTO | 8 ++++++++ fio.1 | 9 +++++---- 2 files changed, 13 insertions(+), 4 deletions(-) diff --git a/HOWTO b/HOWTO index d4e620de..04ea284b 100644 --- a/HOWTO +++ b/HOWTO @@ -992,6 +992,9 @@ Target file/device single zone. The :option:`zoneskip` parameter is ignored. :option:`zonerange` and :option:`zonesize` must be identical. + Trim is handled using a zone reset operation. + Trim only considers non-empty sequential write + required and sequential write preferred zones. .. option:: zonerange=int @@ -1965,6 +1968,11 @@ I/O engine character devices. This engine supports trim operations. The sg engine includes engine specific options. + **libzbc** + Read, write, trim and ZBC/ZAC operations to a zoned + block device using libzbc library. The target can be + either an SG character device or a block device file. + **null** Doesn't transfer any data, just pretends to. This is mainly used to exercise fio itself and for debugging/testing purposes. diff --git a/fio.1 b/fio.1 index 9c12ad13..ff100a1c 100644 --- a/fio.1 +++ b/fio.1 @@ -766,6 +766,8 @@ starts. The \fBzonecapacity\fR parameter is ignored. Zoned block device mode. I/O happens sequentially in each zone, even if random I/O has been selected. Random I/O happens across all zones instead of being restricted to a single zone. +Trim is handled using a zone reset operation. Trim only considers non-empty +sequential write required and sequential write preferred zones. .RE .RE .TP @@ -1761,10 +1763,9 @@ character devices. This engine supports trim operations. The sg engine includes engine specific options. .TP .B libzbc -Synchronous I/O engine for SMR hard-disks using the \fBlibzbc\fR -library. The target can be either an sg character device or -a block device file. This engine supports the zonemode=zbd zone -operations. +Read, write, trim and ZBC/ZAC operations to a zoned block device using +\fBlibzbc\fR library. The target can be either an SG character device or +a block device file. .TP .B null Doesn't transfer any data, just pretends to. This is mainly used to -- 2.31.1
