I have installed mapr with mfs ( base on hadoop fs) and some script which get information from file system by using df, dfisk and nmon log file .
root@spbswgvml10:/opt/nmon# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda1 8.8G 4.4G 4.0G 53% / none 4.0K 0 4.0K 0% /sys/fs/cgroup udev 2.0G 4.0K 2.0G 1% /dev tmpfs 396M 464K 395M 1% /run none 5.0M 0 5.0M 0% /run/lock none 2.0G 0 2.0G 0% /run/shm none 100M 0 100M 0% /run/user root@spbswgvml10:/opt/nmon# fdisk -l Disk /dev/sda: 10.7 GB, 10737418240 bytes 255 heads, 63 sectors/track, 1305 cylinders, total 20971520 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00038d7f Device Boot Start End Blocks Id System /dev/sda1 * 2048 18874367 9436160 83 Linux /dev/sda2 18876414 20969471 1046529 5 Extended /dev/sda5 18876416 20969471 1046528 82 Linux swap / Solaris Disk /dev/sdb: 32.2 GB, 32212254720 bytes 64 heads, 51 sectors/track, 19275 cylinders, total 62914560 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x434da72d Device Boot Start End Blocks Id System /dev/sdb1 2048 62914559 31456256 83 Linux root@spbswgvml10:/opt/nmon# mount /dev/sda1 on / type ext4 (rw,errors=remount-ro) proc on /proc type proc (rw,noexec,nosuid,nodev) sysfs on /sys type sysfs (rw,noexec,nosuid,nodev) none on /sys/fs/cgroup type tmpfs (rw) none on /sys/fs/fuse/connections type fusectl (rw) none on /sys/kernel/debug type debugfs (rw) none on /sys/kernel/security type securityfs (rw) udev on /dev type devtmpfs (rw,mode=0755) devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755) none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880) none on /run/shm type tmpfs (rw,nosuid,nodev) none on /run/user type tmpfs (rw,noexec,nosuid,nodev,size=104857600,mode=0755) none on /sys/fs/pstore type pstore (rw) cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,relatime,cpuset) cgroup on /sys/fs/cgroup/cpu type cgroup (rw,relatime,cpu) cgroup on /sys/fs/cgroup/cpuacct type cgroup (rw,relatime,cpuacct) cgroup on /sys/fs/cgroup/memory type cgroup (rw,relatime,memory) systemd on /sys/fs/cgroup/systemd type cgroup (rw,noexec,nosuid,nodev,none,name=systemd) rpc_pipefs on /run/rpc_pipefs type rpc_pipefs (rw)
Now I want to get information from device /dev/sdb1, which using by mapr as hadoop fs. I know that I can use something like
hadoop fs df But I hope there is another way to get used, total size, etc.
I can't mount /dev/sdb1 cause it's using by some process. And can't find a path which the partition may be already mounted.
