3 # copy a linear file from srcFile to destination SMRDisk in a loop until writeSize MBs is written
4 # SMRDisk is the SMR Host Aware / Host Managed Disk eg. /dev/sdb
7 echo "linearSMRCopy.sh <srcFile> <SMRDisk> <writeSize (MB)>"
10 if [ "$#" -lt 3 ]; then
15 if [ "$(id -u)" != "0" ]; then
16 echo "Please run as sudo user"
20 if which zbc_open_zone > /dev/null 2>&1 && which zbc_read_zone > /dev/null 2>&1 && which zbc_write_zone > /dev/null 2>&1 ; then
21 echo "libzbc commands present... refreshing zones"
22 # reset all write pointers before starting to write
23 sudo zbc_reset_write_ptr /dev/sdb -1
25 echo "libzbc commands not detected. Please install libzbc"
34 numberOfSectors=$(($writeSize * 2048))
36 smrZoneStart=33554432 # TODO query this from SMR drive
38 #dd if=$srcFile of=$destDisk seek=$smrZoneStart bs=512
40 fileSize=`stat --printf="%s" $srcFile`
42 if [ "$(($fileSize % 512))" -ne 0 ]; then
43 echo "$srcFile not 512 byte aligned"
47 sectorsLeftToWrite=$(($fileSize / 512))
49 znum=64 # TODO query this from SMR Drive
51 zoneLength=524288 # number of sectors in each zone TODO query from SMR drive
53 writeOffset=$smrZoneStart
55 sectorsLeftToWrite=$numberOfSectors
57 echo "write begin sectors Left = $sectorsLeftToWrite, writeOffset = $writeOffset zone Num = $znum"
59 while [ "$sectorsLeftToWrite" -gt 0 ];
61 sudo zbc_open_zone $SMRDisk $znum
62 sudo time zbc_write_zone -f $srcFile -loop $SMRDisk $znum $iosize
63 sudo zbc_close_zone /dev/sdb $znum
64 writeOffset=$(($writeOffset+$zoneLength))
66 sectorsLeftToWrite=$(($sectorsLeftToWrite - $zoneLength))
69 echo "write end sectors Left = $sectorsLeftToWrite, writeOffset = $writeOffset zone Num = $znum"