从6.7升级到7.0 一致出现这个等待，500G左右的数据需要多久能升级完成，大佬们知道吗？

🪐 TiDB 技术问题
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这个失败会导致数据丢失吗？

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不会丢失。

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后续记得手动制定一下--transfer-timeout 3600 --wait-timeout 3600，默认情况下是300s超时

Usage:
  tiup cluster upgrade <cluster-name> <version> [flags]

Flags:
      --force                        Force upgrade without transferring PD leader
  -h, --help                         help for upgrade
      --ignore-config-check          Ignore the config check result
      --offline                      Upgrade a stopped cluster
      --post-upgrade-script string   (EXPERIMENTAL) Custom script to be executed on each server after the server is upgraded
      --pre-upgrade-script string    (EXPERIMENTAL) Custom script to be executed on each server before the server is upgraded
      --transfer-timeout uint        Timeout in seconds when transferring PD and TiKV store leaders, also for TiCDC drain one capture (default 600)

Global Flags:
  -c, --concurrency int     max number of parallel tasks allowed (default 5)
      --format string       (EXPERIMENTAL) The format of output, available values are [default, json] (default "default")
      --ssh string          (EXPERIMENTAL) The executor type: 'builtin', 'system', 'none'.
      --ssh-timeout uint    Timeout in seconds to connect host via SSH, ignored for operations that don't need an SSH connection. (default 5)
      --wait-timeout uint   Timeout in seconds to wait for an operation to complete, ignored for operations that don't fit. (default 120)
  -y, --yes                 Skip all confirmations and assumes 'yes'
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tikv升级时会把上面所有的leader转移到其他节点，默认300秒超时，leader多的话很容易超时，建议修改超时时间

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升级完成，感觉7.0的tiflash和6.5的性能差不多