From mboxrd@z Thu Jan  1 00:00:00 1970
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From: Ruslan Laishev <zator at yandex.ru>
Subject: [SPDK] Using of Compression VBDEV
Date: Mon, 13 Sep 2021 08:42:42 +0000
Message-ID: <20210913084242.2717.33249@ml01.vlan13.01.org>
List-ID: <spdk@lists.01.org>
To: spdk@lists.01.org

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Hello!
I have created "Compression VBDEV" on top of Malloc0 BDEV.
$ sudo /data/devadm/spdk/scripts/rpc.py bdev_compress_create -p ./pmem_file=
s -b "CryMalloc0A"
COMP_CryMalloc0A
$sudo /data/devadm/spdk/scripts/rpc.py vhost_scsi_controller_add_target vho=
st.0 0 COMP_CryMalloc0A
0


When I try to execute "mkfs /dev/sda"  (where /dev/sda is the COMP_Malloc0 =
) in the inner VM I got error on the VHOST's output:

[2021-09-13 11:32:51.759692] vbdev_compress.c: 811:_comp_bdev_io_submit: *E=
RROR*: Unknown I/O type 4
[2021-09-13 11:32:51.759741] vbdev_compress.c: 822:_comp_bdev_io_submit: *E=
RROR*: on bdev_io submission!
...

Is there what I'm need to check ?
Thanks in advance!
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