storage

Object storage

OpenStack Swift
CEPH RadosGW
elliptics
HDFS

Организация хранения данных

Хранить миллиарды объектов, просто положив их в базу данных, не получится. Для этого необходимо применять другой класс решений, которые обычно называют Big Data Storage.

Storage Reconfiguration

For example, the following command causes the kernel to forget about the LUN on busid 3, channel 0, target 7 and LUN 1:

echo "1" > \
/sys/class/scsi_host/host3/device/3:0:7:1/delete

The busid of 3 is redundant with the 3 in host3. This format also is used, however, in contexts where the busid is required, such as in /sys/bus/scsi/devices.

To later restore only that particular LUN, execute:

echo "0 7 1" > /sys/class/scsi_host/host3/scan

To resize this same LUN, use:

echo 1 > /sys/bus/scsi/devices/3:0:7:1/rescan

To scan all channels, targets and LUNs, try: