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Create a new loopback storage device (use a physical device if you have access to one) | Create a new loopback storage device (use a physical device if you have access to one) | ||
$> truncate /var/tmp/swift-storage-newdevice --size 5G | $> truncate /var/tmp/swift-storage-newdevice --size 5G | ||
$> DEVICE=$(losetup --show -f /var/tmp/swift-storage-newdevice) | $> DEVICE=$(sudo losetup --show -f /var/tmp/swift-storage-newdevice) | ||
$> mkfs.ext4 -I 1024 $DEVICE | $> sudo mkfs.ext4 -I 1024 $DEVICE | ||
$> mkdir -p /srv/node/newdevice | $> sudo mkdir -p /srv/node/newdevice | ||
$> mount -o noatime,nodiratime,nobarrier,user_xattr $DEVICE /srv/node/newdevice | $> sudo mount -o noatime,nodiratime,nobarrier,user_xattr $DEVICE /srv/node/newdevice | ||
$> chown -R swift:swift /srv/node/newdevice | $> sudo chown -R swift:swift /srv/node/newdevice | ||
|actions= | |actions= | ||
Add the new device to the ring | Add the new device to the ring | ||
$> swift-ring-builder /etc/swift/account.builder add z1-127.0.0.1:6002/newdevice 100 | $> sudo swift-ring-builder /etc/swift/account.builder add z1-127.0.0.1:6002/newdevice 100 | ||
$> swift-ring-builder /etc/swift/container.builder add z1-127.0.0.1:6001/newdevice 100 | $> sudo swift-ring-builder /etc/swift/container.builder add z1-127.0.0.1:6001/newdevice 100 | ||
$> swift-ring-builder /etc/swift/object.builder add z1-127.0.0.1:6000/newdevice 100 | $> sudo swift-ring-builder /etc/swift/object.builder add z1-127.0.0.1:6000/newdevice 100 | ||
$> swift-ring-builder /etc/swift/object.builder pretend_min_part_hours_passed | $> sudo swift-ring-builder /etc/swift/object.builder pretend_min_part_hours_passed | ||
$> swift-ring-builder /etc/swift/account.builder pretend_min_part_hours_passed | $> sudo swift-ring-builder /etc/swift/account.builder pretend_min_part_hours_passed | ||
$> swift-ring-builder /etc/swift/container.builder pretend_min_part_hours_passed | $> sudo swift-ring-builder /etc/swift/container.builder pretend_min_part_hours_passed | ||
test for files on the new device (there should be none | test for files on the new device (there should be none | ||
$> find /srv/node/newdevice -type f | $> sudo find /srv/node/newdevice -type f | ||
re-balance the ring file | re-balance the ring file | ||
$> swift-ring-builder /etc/swift/account.builder rebalance | $> sudo swift-ring-builder /etc/swift/account.builder rebalance | ||
$> swift-ring-builder /etc/swift/container.builder rebalance | $> sudo swift-ring-builder /etc/swift/container.builder rebalance | ||
$> swift-ring-builder /etc/swift/object.builder rebalance | $> sudo swift-ring-builder /etc/swift/object.builder rebalance | ||
|results= | |results= | ||
After a sort wait some files should be moved from the other devices to the new storage device | After a sort wait some files should be moved from the other devices to the new storage device | ||
$> find /srv/node/newdevice -type f | $> sudo find /srv/node/newdevice -type f | ||
}} | }} | ||
Latest revision as of 15:18, 18 September 2012
Description
Swift allows storage devices to be added to a running swift environment. In this test we will add a storage device to the ring file. And verfiy it is being utilized
Setup
So its more likely we'll see the effects of adding a device we upload more data to swift
$> cd
$> . /path/to/keystonerc
$> for x in {1..10} ; do swift upload c$x test.data ; done
Create a new loopback storage device (use a physical device if you have access to one)
$> truncate /var/tmp/swift-storage-newdevice --size 5G $> DEVICE=$(sudo losetup --show -f /var/tmp/swift-storage-newdevice) $> sudo mkfs.ext4 -I 1024 $DEVICE $> sudo mkdir -p /srv/node/newdevice $> sudo mount -o noatime,nodiratime,nobarrier,user_xattr $DEVICE /srv/node/newdevice $> sudo chown -R swift:swift /srv/node/newdevice
How to test
Add the new device to the ring
$> sudo swift-ring-builder /etc/swift/account.builder add z1-127.0.0.1:6002/newdevice 100 $> sudo swift-ring-builder /etc/swift/container.builder add z1-127.0.0.1:6001/newdevice 100 $> sudo swift-ring-builder /etc/swift/object.builder add z1-127.0.0.1:6000/newdevice 100 $> sudo swift-ring-builder /etc/swift/object.builder pretend_min_part_hours_passed $> sudo swift-ring-builder /etc/swift/account.builder pretend_min_part_hours_passed $> sudo swift-ring-builder /etc/swift/container.builder pretend_min_part_hours_passed
test for files on the new device (there should be none
$> sudo find /srv/node/newdevice -type f
re-balance the ring file
$> sudo swift-ring-builder /etc/swift/account.builder rebalance $> sudo swift-ring-builder /etc/swift/container.builder rebalance $> sudo swift-ring-builder /etc/swift/object.builder rebalance
Expected Results
After a sort wait some files should be moved from the other devices to the new storage device
$> sudo find /srv/node/newdevice -type f