Method, apparatus and computer program product for recovering data
Embodiments of the present disclosure relate to a method, a device and a computer program product for recovering data. The method comprises in response to receiving a request to recover data from a backup node to a source node, determining a plurality of candidate backup nodes having copies of the data; determining respective performance indicators of the plurality of candidate backup nodes; and determining, from the plurality of candidate backup nodes, the backup node for recovering the data to the source node based on the respective performance indicators of the plurality of candidate backup nodes.
1. A method for recovering data, comprising:
in response to receiving a request to recover data to a source node, determining a plurality of candidate backup nodes (CBNs) having copies of the data, wherein the source node has backed up a copy of the data to a first backup node of the plurality of CBNs, wherein the first backup node has backed up the copy of the data to at least a second backup node of the plurality of CBNs, a third backup node of the plurality of CBNs, and a fourth backup node of the plurality of CBNs;
determining first performance indicators (PIs) of the plurality of CBNs, wherein determining the first PIs of the plurality of CBNs comprises determining, for a given CBN of the plurality of CBNs, a request response time between the source node and the given CBN;
selecting, from the plurality of CBNs, a selected CBN for recovering the data to the source node based on a performance score (PS) of the selected CBN comprises:
scoring second PIs of the selected CBN to obtain scored PIs;
determining the PS of the selected CBN by linearly weighting the scored PIs of the selected CBN;
presenting the plurality of CBNs on a user interface, wherein the selected CBN is highlighted on the user interface; and
in response to receiving selection of the selected CBN, sending a command to the selected CBN to instruct the source node to obtain the copy of the data from the selected CBN to recover the data to the source node.
2. The method according to claim 1 , wherein determining the first PIs of the plurality of CBNs further comprises determining, for the given CBN of the plurality of CBNs, at least one of the following:
an amount of tasks executing on the given CBN;
an input/output load level at the given CBN; and
a network bandwidth at the given CBN.
3. The method according to claim 1 , wherein selecting the selected CBN from the plurality of CBNs comprises:
selecting a CBN having a highest score among the plurality of CBNs as the selected CBN.
4. An electronic device, comprising:
at least one processing unit;
at least one memory coupled to the at least one processing unit and storing instructions for execution by the at least one processing unit, the instructions, when executed by the at least one processing unit, causing the device to perform a method, the method comprising:
in response to receiving a request to recover data to a source node, determining a plurality of candidate backup nodes (CBNs) having copies of the data, wherein the source node has backed up a copy of the data to a first backup node of the plurality of CBNs, wherein the first backup node has backed up the copy of the data to at least a second backup node of the plurality of CBNs, a third backup node of the plurality of CBNs, and a fourth backup node of the plurality of CBNs;
determining first performance indicators (PIs) of the plurality of CBNs, wherein determining the first PIs of the plurality of CBNs comprises determining, for a given CBN of the plurality of CBNs, a request response time between the source node and the given CBN;
selecting, from the plurality of CBNs, a selected CBN for recovering the data to the source node based on a performance score (PS) of the selected CBN comprises:
scoring second PIs of the selected CBN to obtain scored PIs;
determining the PS of the selected CBN by linearly weighting the scored PIs of the selected CBN;
presenting the plurality of CBNs on a user interface, wherein the selected CBN is highlighted on the user interface; and
in response to receiving selection of the selected CBN, sending a command to the selected CBN to instruct the source node to obtain the copy of the data from the selected CBN to recover the data to the source node.
5. The device according to claim 4 , wherein determining the first PIs of the plurality of CBNs further comprises determining, for the given CBN of the plurality of CBNs, at least one of the following:
an amount of tasks executing on the given CBN;
an input/output load level at the given CBN; and
a network bandwidth at the given CBN.
6. The device according to claim 4 , wherein selecting the selected CBN from the plurality of CBNs comprises:
selecting a CBN having a highest score among the plurality of CBNs as the selected CBN.
7. A non-transitory computer readable medium comprising machine-executable instructions, the machine-executable instructions, when executed by an apparatus, causing the apparatus to execute a method, the method comprising:
in response to receiving a request to recover data to a source node, determining a plurality of candidate backup nodes (CBNs) having copies of the data, wherein the source node has backed up a copy of the data to a first backup node of the plurality of CBNs, wherein the first backup node has backed up the copy of the data to at least a second backup node of the plurality of CBNs, a third backup node of the plurality of CBNs, and a fourth backup node of the plurality of CBNs;
determining first performance indicators (PIs) of the plurality of CBNs, wherein determining the first PIs of the plurality of CBNs comprises determining, for a given CBN of the plurality of CBNs a request response time between the source node and the given CBN;
selecting, from the plurality of CBNs, a selected CBN for recovering the data to the source node based on a performance score (PS) of the selected CBN comprises:
scoring second PIs of the selected CBN to obtain scored PIs;
determining the PS of the selected CBN by linearly weighting the scored PIs of the selected CBN;
presenting the plurality of CBNs on a user interface, wherein the selected CBN is highlighted on the user interface; and
in response to receiving selection of the selected CBN, sending a command to the selected CBN to instruct the source node to obtain the copy of the data from the selected CBN to recover the data to the source node.
8. The non-transitory computer readable medium of claim 7 , wherein determining the first PIs of the plurality of CBNs further comprises determining, for the given CBN of the plurality of CBNs, at least one of the following:
an amount of tasks executing on the given CBN;
an input/output load level at the given CBN; and
a network bandwidth at the given CBN.
9. The method according to claim 1 , wherein the request response time between the source node and the given CBN is determined by the source node sending a ping command to the given CBN.
10. The device according to claim 4 , wherein the request response time between the source node and the given CBN is determined by the source node sending a ping command to the given CBN.
11. The non-transitory computer readable medium of claim 7 , wherein the request response time between the source node and the given CBN is determined by the source node sending a ping command to the given CBN.