PowerFlex: Adding device using Command line Error Adding a device takes too long

Summary: Adding a device fails with an error "Adding a device takes too long. This might indicate a problematic device"

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Symptoms

While adding the devices to the storage pool, few of the devices are getting added, while others are failing with.

 

# scli --add_sds_device --sds_name SDS12 --device_path /dev/sdl --device_name /dev/sdl --storage_pool_name SIOHDDSP02 Error: MDM failed command. Status: Adding a device takes too long. This might indicate a problematic device

In MDM event and trace logs we would see the following events

MDM_CLI_CONF_COMMAND_RECEIVED INFO          Command add_sds_device received, User: 'admin'. [643641] SDS: Name: SDS12, SDS Device: name /dev/sdl path /dev/sdl, Storage Pool: SIOHDDSP02, Test Mode: 'Test and activate' Test Time: 0 force_device_takeover flag: Omitted CLI_COMMAND_FAILED        WARNING       Command add_sds_device was not successful. Error code: Adding a device takes too long. This might indicate a problematic device [643641] ID: 0000000000000000 ** trace logs ** 02/05 10:36:03.790431 0x7f8710695eb8:repExtent_IO:02976: Writing the repository to disk and cluster. Extent: 4802 Page: 77018 Offset: 315465728 Size: 65536 02/05 10:36:03.792868 0x7f8710c62eb8:mosEventLog_PostInternal:00590: New event added. Message: "Command add_sds_device received, User: 'admin'. [643641]". Additional info: "SDS: Name: SDS12, SDS Device: name /dev/sdl path /dev/sdl, Storage Pool: SIOHDDSP02, Test Mode: 'Test and activate' Test Time: 0 force_device_takeover flag: Omitted" Severity: Info 02/05 10:36:03.792891 0x7f8710c62eb8:tgtDev_Create:02275: TGT: f84b644a0000000d Dev: 7f7a2316000d000b #devsInTest: 0 02/05 10:36:03.792898 0x7f8710c62eb8:sp_AddDevice:00749: StoragePool: 3fae9b4000000003 DevId: 7f7a2316000d000b #TGTs: 10 RC: SUCCESS 02/05 10:36:03.792910 0x7f8710821eb8:repExtent_IO:02976: Writing the repository to disk and cluster. Extent: 3741 Page: 60042 Offset: 245932032 Size: 65536 02/05 10:36:03.795811 0x7f8710c62eb8:tgtMgr_AddDevice:01997: devId: 7f7a2316000d000b Name /dev/sdl Path /dev/sdl tgtId: f84b644a0000000d testMode: TEST_AND_ACTIVATE force_device_takeover flag: Omitted 02/05 10:36:03.795829 0x7f8710c62eb8:mdmTgtMsg_AddDevToMsg:00995: Index: 0 devId: 7f7a2316000d000b bNew: 1 path: /dev/sdl bDrl 1 version: 2.0.12000 02/05 10:36:03.795834 0x7f8710c62eb8:tgtMgr_UpdateTgtAboutDevices:01833: TGT_CONFIG TGT f84b644a0000000d #Devs: 1 bSomeDevErrorsCleared: 0 02/05 10:37:06.117687 0x7f87130fbeb8:tgtMgr_TgtOscCB:07640: Con f84b644a0000000d Network address 192.168.61.79 - Oscillation of type RPC_LINGERED_1SEC reported

Cause

The error might be caused due latency issue.
Latency issue could be on network or device.

Resolution

1. To rule out network latency, perform an "SDS network test." See ScaleIO User Guide and search for "Testing the network"  Check for packet drop using ping command between MDM and SDSs.

scli --start_sds_network_test --parallel_messages 16 --sds_name <> 
scli --query_sds_network_test_results --sds_name <>
scli --query_network_latency_meters --sds_name <>

2. To rule out the device issue, perform a dd read operation against the device. Check for any errors logged in /var/log/messages.

dd if=/dev/sdX of=/dev/null bs=1024 (replace /dev/sdX with the device name)

Affected Products

PowerFlex Software

Products

PowerFlex Software
Article Properties
Article Number: 000024977
Article Type: Solution
Last Modified: 17 Sept 2025
Version:  4
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