Crash - Data found with unsupported compression type.

[roi1979]

Hi,

I've been using lessfs quite happily - for a month or so - for storing live libvirt disk images.

I may have forgotten to manually unmount the lessfs volume(!) before powering down after which acccessing a certain image file makes lessfs crash.

There's no core dump, but these lines show up when lessfs crashes.

May 23 22:00:16 ubuntu lessfs[3255]: Data found with unsupported compression type <F7>
May 23 22:00:16 ubuntu lessfs[3255]: file_read_block : inode 163 - 8 failed to decompress block

Is there any way for me to have the disk image restored?

I have backups so this is no disaster - just an annoyance. Although it makes me wonder whether if I'm using lessfs for something it wasn't designed for.

The machine is running Ubuntu 14.04 on a Samsung SSD 840 drive.

(Also: I think lessfs is quite an awesome project - thank you for the efforts.)

br.
roi1979

My lessfs.cfg:
DEBUG = 5
HASHNAME=MHASH_TIGER192
HASHLEN = 24
BLOCKDATA_IO_TYPE=file_io
BLOCKDATA_PATH=/opt/lessfs/dta/blockdata.dta
META_PATH=/opt/lessfs/mta
META_BS=1048576
CACHESIZE=512
COMMIT_INTERVAL=10
LISTEN_IP=127.0.0.1
LISTEN_PORT=101
MAX_THREADS=16
DYNAMIC_DEFRAGMENTATION=on
COREDUMPSIZE=2560000000
SYNC_RELAX=0
WBACKGROUND_DELETE=on
# HDD encryption enabled - so not necessary on lessfs level.
ENCRYPT_DATA=off
#ENCRYPT_META=on
ENABLE_TRANSACTIONS=on
BLKSIZE=131072
COMPRESSION=snappy

[Emmanuel Florac]

Weird, could this be a data corruption?

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