ZFS. No error message when copying a 100 GiB file on a 22 GiB pool
Maurizio Vairani
maurizio.vairani at cloverinformatica.it
Wed Mar 29 09:15:24 UTC 2017
The PC is running:
# uname -a
FreeBSD clover-nas2 11.0-RELEASE-p8 FreeBSD 11.0-RELEASE-p8 #0: Wed Feb
22 06:12:04 UTC 2017
root at amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64
I need to copy a 100 GiB file, Win7.img, to another machine. The idea is
to use a fast USB 3 SSD. The pool on it, zdata, was created with the
command:
# zpool create -m /zdata -O compression=lz4 -O atime=off zdata
diskid/DISK-00000000000000000000
# zpool list zdata
NAMESIZE ALLOC FREE EXPANDSZ FRAGCAP DEDUP HEALTH ALTROOT
zdata 22.2G 4.85M 22.2G -16% 0% 1.00x ONLINE -
# du -hA Win7.img
100GWin7.img
# du -h Win7.img
55GWin7.img
# /bin/cp Win7.img /zdata/
No error message is printed. The file on zdata is truncated:
# du -Ah /zdata/Win7.img
46G/zdata/Win7.img
# du -h /zdata/Win7.img
22G/zdata/Win7.img
Regards,
Maurizio
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