Read/Write/Delete operations to the "evroot/test" directory are seen in the Hitachi Content Platform logs

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Article ID: 100014633

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Cause

During normal EV storage operations EV's storage processes will check connectivity to the HCP streamer device. This test conducts a series of Writes, Reads, and Deletes to the "evroot/test" directory. Note that during Initial configuration of the HCP Vault Store partition the "Root folder path" is defaulted to "evroot/", if this has been changed the path to the "test" directory may vary.

Example:

When the StorageFileWatch process confirms that a set of files have been written to the HCP, a connectivity test may be performed.

To see this in action:

1. Start a Dtrace on the EV server managing the Vault Store containing the HCP partition for the StorageFileWatch process (see "How to run Dtrace to help diagnose issues with Enterprise Vault" in the Related articles section).

2. Set and Clear backup mode on the relevant Vault Store

3. Allow the Dtrace to run for a few minutes, then stop the dtrace

4. Review the Dtrace, looking for {CStreamerWatchFileStorageAccessor::CheckStreamerAccesibility}

In the Dtrace the specific "Curl" operations will be shown:

(StorageFileWatch) <8180> EV:L {CStreamerWatchFileStorageAccessor::CheckStreamerAccesibility} (Entry)

(StorageFileWatch) <8180> EV:M Hitachi Content Platform (HCP) Streamer: CStreamerObject::Test Entry

(StorageFileWatch) <8180> EV:M Hitachi Content Platform (HCP) Streamer: ConnectionManager::Set_Curl_Operation method https://ev.hcp1.ev10.local/rest/ Reason = 200 : OK - opr_HEAD

(StorageFileWatch) <8180> EV:M Hitachi Content Platform (HCP) Streamer: ConnectionManager::Set_Curl_Operation method https://ev.hcp1.ev10.local/rest/evroot/test/ce412770-6c47-44ad-8cd6-cab0d052bf80_5862?retention=-2 Reason = 201 : CREATED - opr_PUT_BUF

(StorageFileWatch) <8180> EV:M Hitachi Content Platform (HCP) Streamer: ConnectionManager::Set_Curl_Operation method https://ev.hcp1.ev10.local/rest/evroot/test/ce412770-6c47-44ad-8cd6-cab0d052bf80_5863?retention=-2 Reason = 201 : CREATED - opr_PUT_BUF

(StorageFileWatch) <8180> EV:M Hitachi Content Platform (HCP) Streamer: ConnectionManager::Set_Curl_Operation method https://ev.hcp1.ev10.local/rest/evroot/test/ce412770-6c47-44ad-8cd6-cab0d052bf80_5863?type=custom-metadata Reason = 201 : CREATED - opr_PUT_BUF

(StorageFileWatch) <8180> EV:M Hitachi Content Platform (HCP) Streamer: ConnectionManager::Set_Curl_Operation method https://ev.hcp1.ev10.local/rest/evroot/test/ce412770-6c47-44ad-8cd6-cab0d052bf80_5863?type=custom-metadata Reason = 200 : OK - opr_GET_BUF

(StorageFileWatch) <8180> EV:M Hitachi Content Platform (HCP) Streamer: ConnectionManager::Set_Curl_Operation method https://ev.hcp1.ev10.local/rest/evroot/test/ce412770-6c47-44ad-8cd6-cab0d052bf80_5864?retention=-2 Reason = 201 : CREATED - opr_PUT_BUF

(StorageFileWatch) <8180> EV:M Hitachi Content Platform (HCP) Streamer: ConnectionManager::Set_Curl_Operation method https://ev.hcp1.ev10.local/rest/evroot/test/ce412770-6c47-44ad-8cd6-cab0d052bf80_5864?type=custom-metadata Reason = 201 : CREATED - opr_PUT_BUF

(StorageFileWatch) <8180> EV:M Hitachi Content Platform (HCP) Streamer: ConnectionManager::Set_Curl_Operation method https://ev.hcp1.ev10.local/rest/evroot/test/ce412770-6c47-44ad-8cd6-cab0d052bf80_5864?type=custom-metadata Reason = 200 : OK - opr_GET_BUF

(StorageFileWatch) <8180> EV:M Hitachi Content Platform (HCP) Streamer: CStreamerObject::Test Exiting with HRESULT 0x0

(StorageFileWatch) <8180> EV:L {CStreamerWatchFileStorageAccessor::CheckStreamerAccesibility} (Exit) Status: [Success]

Resolution

The periodic connectivity Enterprise Vault conducts are by design, to ensure sound storage operations.

Issue/Introduction

When Hitachi Content Platform (HCP) is being used as an Enterprise Vault (EV) storage location, periodic Read/Write/Delete operations to the "evroot/test" directly may be seen in the HCP logs.

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