At 03/21/2017 03:23 PM, Eryu Guan wrote:
On Thu, Mar 16, 2017 at 09:50:24AM +0800, Qu Wenruo wrote:
Btrfs in-band de-duplication test cases for in-memory backend, which covers
the bugs exposed during the development.
Sorry, I'm having trouble enabling inband dedupe in tests, I always get
ioctl failure, $seqres.full shows:
btrfs-progs v4.10-5-g23d4fd5
See http://btrfs.wiki.kernel.org for more information.
Label: (null)
UUID: 3d2cedd0-64ae-4667-ba09-9c12e28ecadd
Node size: 16384
Sector size: 4096
Filesystem size: 15.00GiB
Block group profiles:
Data: single 8.00MiB
Metadata: DUP 1.00GiB
System: DUP 8.00MiB
SSD detected: no
Incompat features: extref, skinny-metadata
Number of devices: 1
Devices:
ID SIZE PATH
1 15.00GiB /dev/mapper/systemvg-testlv2
# /usr/local/bin/btrfs dedupe enable -f -s inmemory -b 64K /scratch
ERROR: failed to (enable) inband deduplication: Inappropriate ioctl for device
ERROR: unsupported dedupe limit combination: nr: 0, mem: 0
What I forgot to mention is that, the inband dedupe feature is an
experimental feature, so CONFIG_BTRFS_DEBUG is needed to use this feature.
Sorry for the inconvenience.
I'll add also add the CONFIG_BTRFS_DEBUG check for
/sys/fs/btrfs/feature/, so it won't export inband dedupe to users.
Thanks,
Qu
failed: '/usr/local/bin/btrfs dedupe enable -f -s inmemory -b 64K /scratch'
I have no special MKFS_OPTIONS or MOUNT_OPTIONS specified, all defaults.
kernel is built from your test tree. Did I miss anything?
Thanks,
Eryu
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