if err != nil {
		t.Fatal(err)
	}
	existingETag := objInfo.ETag

	// Simulate read quorum failure by taking enough disks offline
	// With 16 disks (EC 8+8), read quorum is 9. Taking 8 disks offline leaves only 8,
	// which is below read quorum.
	erasureDisks := xl.getDisks()
	z.serverPools[0].erasureDisksMu.Lock()
	xl.getDisks = func() []StorageAPI {

	if err != nil {
		t.Fatal(err)
	}
	existingETag := objInfo.ETag

	// Simulate read quorum failure by taking enough disks offline
	// With 16 disks (EC 8+8), read quorum is 9. Taking 8 disks offline leaves only 8,
	// which is below read quorum.
	erasureDisks := xl.getDisks()
	z.serverPools[0].erasureDisksMu.Lock()
	xl.getDisks = func() []StorageAPI {

    } else {
        contains("teamcity.agent.jvm.os.arch", arch.nameOnLinuxWindows)
    }
}

fun Requirements.requiresEc2Agent() {
    matches("teamcity.agent.name", "^(ec|EC)2-.*$")
}

fun Requirements.requiresNotEc2Agent() {
    doesNotContain("teamcity.agent.name", "ec2")
    // US region agents have name "EC2-XXX"
    doesNotContain("teamcity.agent.name", "EC2")
}

/**

00003a0 be 9b a0 97 27 6a 6f e7 d3 8b c4 7c ec d3 91 56
00003b0 d9 ac 5e bf 16 42 2f 00 1f 93 a2 23 87 bd e2 59
00003c0 a0 de 1a 66 c8 62 eb 55 8f 91 17 b4 61 42 7a 50
00003d0 40 03 34 40 03 34 40 03 34 40 03 34 40 03 34 40
00003e0 03 34 40 03 34 40 03 34 40 03 34 40 03 34 40 03
00003f0 34 40 03 34 40 03 34 ff 85 86 90 8b ea 67 90 0d
0000400 e1 42 1b d2 61 d6 79 ec fd 3e 44 28 a4 51 6c 5c

   * b ---- a ---- d
   * |      |
   * |      |
   * e ---- c ---- f
   * }
   */
  private static final SuccessorsFunction<Character> JAVADOC_GRAPH =
      createUndirectedGraph("ba", "ad", "be", "ac", "ec", "cf");

  /**
   * A diamond shaped directed graph (arrows going down):
   *
   * {@snippet :
   *   a
   *  / \
   * b   c
   *  \ /
   *   d
   * }
   */

		return nil, setupType, err
	}

	_, serverAddrPort := mustSplitHostPort(serverAddr)

	poolEndpoints := make(PoolEndpointList, len(poolsLayout))

	// For single arg, return single drive EC setup.
	if isSingleDriveLayout(poolsLayout...) {
		endpoint, err := NewEndpoint(poolsLayout[0].layout[0][0])
		if err != nil {
			return nil, setupType, err
		}
		if err := endpoint.UpdateIsLocal(); err != nil {