chenhao

zfs create: create zvol so slow

1

### System information Type | Version/Name --- | --- Distribution Name | ubuntu Distribution Version | 16.04.6 Kernel Version | 4.4.0-177-generic Architecture | aarch64 OpenZFS Version | 0.8.6 ### Describe...

iterator.seek() so slow

4

I use rocksdb to store cdp(Continuous Data Protection) data. key is `'p'+nanosecond timestamp(uint64)`, value is `sector + bio data`. my env:  my code:    ### Expected behavior...

kuboard-v3 无法启动

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环境是aliyun ecs + ubuntu 20.04，用kubekey部署的单机k8s v1.24.0 > 已知kuboard-v3最高兼容v1.23， 但手边只有k8s v1.24.0 ```bash # kubectl apply -f https://addons.kuboard.cn/kuboard/kuboard-v3.yaml # kubectl get pods -n kuboard NAME READY STATUS RESTARTS AGE kuboard-etcd-nzc74 1/1 Running...

autosuggestion suppprt

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like [zsh-users/zsh-autosuggestions](https://github.com/zsh-users/zsh-autosuggestions)

oauth2.AuthCodeURL生成的url会导致网页授权回调两次

2

llog: ``` 2018-03-23 16:12:17 handler/weixin.go:67 /service/weixin/mp?code=071AdBVI1ZHOd509MKUI1jwjVI1AdBVV&state=385a5e02f501f8190cb5de69fe0d4d0c 2018-03-23 16:12:17 handler/weixin.go:67 /service/weixin/mp?code=001tbrPg2GWJYH07NrNg2oxqPg2tbrPQ&state=385a5e02f501f8190cb5de69fe0d4d0c ``` 两次回调的code不同,但state相同. 解决方法 生成url时添加`connect_redirect=1`: ```go func AuthCodeURL(appId, redirectURI, scope, state string) string { return "https://open.weixin.qq.com/connect/oauth2/authorize?appid=" + url.QueryEscape(appId) + "&redirect_uri=" +...

build v7.10.2 failed with gcc 11/12

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### Expected behavior build ok ### Actual behavior errors: - `error: format '%u' expects argument of type 'unsigned int', but argument 3 has type 'std::reference_wrapper' [-Werror=format=]` - `error: no match...

`c04/a/boot /loader.S` qemu-system-i386 cpu会概率性重置

3

`times 60 dq 0`+`lgdt [gdt_ptr]`会导致qemu-system-i386 cpu概率性重置, 怀疑gdt只允许第一个选择子为0, 其他不能为0.

incremental backup failed: Bitmap does not exist

2

**Affected version** oVirt Engine: ovirt-engine-4.5.4-1.el8.noarch Host OS Variant: ovirt-node-ng-installer-4.5.4-2022120615.el8.iso VDSM version: vdsm-4.50.3.4-1.el8.x86_64 **Describe the bug** op log: ```bash # --- backup_vm.py is from python-ovirt-engine-sdk4-4.6.1/examples # ./backup_vm.py -c engine1 --debug full...

mount: proc is already mounted or /proc busy

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os: Linux chen-pc 4.15.0-30deepin-generic 2018 x86_64 GNU/Linux go : go version go1.12.5 linux/amd64 在书的`2.1.5`例子上碰到问题, 我也知道和书上要求的kernel version不一致, 但还是希望有人知道的话帮忙答复一下解决方法 ```go ... cmd.SysProcAttr = &syscall.SysProcAttr{ Cloneflags: syscall.CLONE_NEWNS, } ... ``` 运行: ```sh $...