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Martin Hope
lepe
Asked: 2018-10-15 07:44:19 +0800 CST
  • 3

在两台计算机（Ubuntu 18.04 x64）上安装了 WPS Office，一台通过 snap，一台通过 apt。我有一台打印机连接到另一台服务器，该服务器使用 cups 发布，并且在其他应用程序（如 libreoffice、pdf 查看器等）中运行良好。

在这两个客户端中，单击打印按钮或从菜单中显示错误：“WPS Office 未找到任何已安装的打印机”。

到目前为止我找不到任何解决方案。有什么办法可以调试或解决这个问题？

printing cups-lpd wps-office
Martin Hope
lepe
Asked: 2017-07-26 18:29:29 +0800 CST
  • 1

在 Virtuozzo 中运行 LXD 并不完全有效（它可能类似于在另一个 LXD 中运行 LXD）。

Virtuozzo 主机是 VPS 主机服务（不受我控制）。

VPS 客户端正在运行 Ubuntu Server 16.04，我成功安装了 LXD 并对其进行了初始化，直到它显示为空的lxc list.

然后我尝试启动一个图像：lxc launch images:ubuntu/artful artful，但它失败了抱怨：

错误：LXD 没有 uid/gid 分配。在此模式下，仅支持特权容器。

其中cat /var/log/lxd/lxd.log报告：

lvl=warn msg="Couldn't find the CGroup pids controller, process limits will be ignored." t=2017-07-26T10:11:35+0900
lvl=info msg="Kernel uid/gid map:" t=2017-07-26T10:11:35+0900
lvl=info msg=" - u 0 0 0" t=2017-07-26T10:11:35+0900
lvl=info msg=" - g 0 0 0" t=2017-07-26T10:11:35+0900
lvl=info msg="Configured LXD uid/gid map:" t=2017-07-26T10:11:35+0900
lvl=info msg=" - u 0 100000 65536 (unusable)" t=2017-07-26T10:11:35+0900
lvl=info msg=" - g 0 100000 65536 (unusable)" t=2017-07-26T10:11:35+0900
lvl=warn msg="One or more uid/gid map entry isn't usable (typically due to nesting)" t=2017-07-26T10:11:35+0900
lvl=warn msg="Only privileged containers will be able to run" t=2017-07-26T10:11:35+0900
lvl=info msg="Connecting to a remote simplestreams server" t=2017-07-26T10:11:35+0900

然后我尝试以特权模式运行容器： lxc launch images:ubuntu/artful artful -c security.nesting=true -c security.privileged=true

它安装成功，但无法启动：

error: Error calling 'lxd forkstart artful /var/lib/lxd/containers /var/log/lxd/artful/lxc.conf': err='Failed to run: /usr/bin/lxd forkstart artful /var/lib/lxd/containers /var/log/lxd/artful/lxc.conf: '
  lxc 20170726020609.465 ERROR lxc_cgfs - cgroups/cgfs.c:lxc_cgroupfs_create:901 - Could not find writable mount point for cgroup hierarchy 4 while trying to create cgroup.
  lxc 20170726020609.465 ERROR lxc_cgfs - cgroups/cgfs.c:cgroup_rmdir:209 - Device or resource busy - cgroup_rmdir: failed to delete /sys/fs/cgroup/systemd//system.slice/lxd.service

这一切都表明 Virtuozzo 容器正在运行unprivileged，因此 LXD 失败了。

我想知道在这种情况下这是否是 LXD 的死胡同，或者是否有机会让它发挥作用？

vps
Martin Hope
lepe
Asked: 2016-10-05 23:43:56 +0800 CST
  • 3

LXD 的默认路径是/var/lib/lxd，所以容器在 /var/lib/lxd/containers，快照放在/var/lib/lxd/snapshots.

/var/ 分区快满了，所以我打算为容器和快照使用另一个分区，它有更多的空间。

我目前的选择是：

  • 创建指向新目录的符号链接（在另一个驱动器中）
  • 将新目录绑定（挂载）到当前目录
  • 更改一些指向另一个驱动器中的目录的 lxd 设置（如果存在）

不确定哪种方法更容易，以及是否有任何其他方法可以轻松实现。

我担心 apparmor、容器的权限或导致 lxd/lxc 出现问题。

哪个是移动它们的正确（或最佳）方式？

（2017 年 4 月）更新 ******************

LXD 2.9+ 支持多个存储池。

lxc
Martin Hope
lepe
Asked: 2016-09-24 00:21:17 +0800 CST
  • 1

使用 Ubuntu 14.04x64 和 lxd 2.2-0ubuntu1

每当我尝试启动容器时，都会显示此错误：

不允许操作 - 错误重新挂载 /usr/lib/x86_64-linux-gnu/lxc/sys/fs/cgroup/systemd 只读

完整的日志：

$ lxc info --show-log alpine-edge

Name: alpine-edge
Architecture: x86_64
Created: 2016/09/23 08:08 UTC
Status: Stopped
Type: persistent
Profiles: default

Log:

lxc 20160923170858.412 INFO     lxc_start - start.c:lxc_check_inherited:252 - closed inherited fd 3
lxc 20160923170858.412 INFO     lxc_start - start.c:lxc_check_inherited:252 - closed inherited fd 8
lxc 20160923170858.414 INFO     lxc_container - lxccontainer.c:do_lxcapi_start:797 - Attempting to set proc title to [lxc monitor] /var/lib/lxd/containers alpine-edge
lxc 20160923170858.414 INFO     lxc_utils - utils.c:setproctitle:1460 - setting cmdline failed - Invalid argument
lxc 20160923170858.415 INFO     lxc_start - start.c:lxc_check_inherited:252 - closed inherited fd 8
lxc 20160923170858.415 INFO     lxc_lsm - lsm/lsm.c:lsm_init:48 - LSM security driver AppArmor
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:342 - processing: ..
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:446 - Adding native rule for  action 0
lxc 20160923170858.415 WARN     lxc_seccomp - seccomp.c:do_resolve_add_rule:228 - Seccomp: failed to resolve syscall: 
lxc 20160923170858.415 WARN     lxc_seccomp - seccomp.c:do_resolve_add_rule:229 - This syscall will NOT be blacklisted
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:449 - Adding compat rule for  action 0
lxc 20160923170858.415 WARN     lxc_seccomp - seccomp.c:do_resolve_add_rule:228 - Seccomp: failed to resolve syscall: 
lxc 20160923170858.415 WARN     lxc_seccomp - seccomp.c:do_resolve_add_rule:229 - This syscall will NOT be blacklisted
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:342 - processing: .reject_force_umount  # comment this to allow umount -f;  not recommended.
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:446 - Adding native rule for reject_force_umount action 0
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:do_resolve_add_rule:216 - Setting seccomp rule to reject force umounts

lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:449 - Adding compat rule for reject_force_umount action 0
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:do_resolve_add_rule:216 - Setting seccomp rule to reject force umounts

lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:342 - processing: .[all].
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:342 - processing: .kexec_load errno 38.
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:446 - Adding native rule for kexec_load action 327718
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:449 - Adding compat rule for kexec_load action 327718
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:342 - processing: .open_by_handle_at errno 38.
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:446 - Adding native rule for open_by_handle_at action 327718
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:449 - Adding compat rule for open_by_handle_at action 327718
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:342 - processing: .init_module errno 38.
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:446 - Adding native rule for init_module action 327718
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:449 - Adding compat rule for init_module action 327718
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:342 - processing: .finit_module errno 38.
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:446 - Adding native rule for finit_module action 327718
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:449 - Adding compat rule for finit_module action 327718
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:342 - processing: .delete_module errno 38.
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:446 - Adding native rule for delete_module action 327718
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:449 - Adding compat rule for delete_module action 327718
lxc 20160923170858.415 INFO     lxc_seccomp - seccomp.c:parse_config_v2:456 - Merging in the compat seccomp ctx into the main one
lxc 20160923170858.415 INFO     lxc_conf - conf.c:run_script_argv:367 - Executing script '/usr/bin/lxd callhook /var/lib/lxd 4 start' for container 'alpine-edge', config section 'lxc'
lxc 20160923170858.415 INFO     lxc_start - start.c:lxc_check_inherited:252 - closed inherited fd 3
lxc 20160923170858.415 INFO     lxc_start - start.c:lxc_check_inherited:252 - closed inherited fd 8
lxc 20160923170858.418 INFO     lxc_monitor - monitor.c:lxc_monitor_sock_name:178 - using monitor sock name lxc/d78a9d7e97b4b375//var/lib/lxd/containers
lxc 20160923170858.447 DEBUG    lxc_start - start.c:setup_signal_fd:290 - sigchild handler set
lxc 20160923170858.448 DEBUG    lxc_console - console.c:lxc_console_peer_default:469 - no console peer
lxc 20160923170858.448 INFO     lxc_start - start.c:lxc_init:489 - 'alpine-edge' is initialized
lxc 20160923170858.449 INFO     lxc_confile - confile.c:config_idmap:1500 - read uid map: type u nsid 0 hostid 19695264 range 65536
lxc 20160923170858.449 INFO     lxc_confile - confile.c:config_idmap:1500 - read uid map: type g nsid 0 hostid 19695264 range 65536
lxc 20160923170858.449 DEBUG    lxc_start - start.c:__lxc_start:1327 - Not dropping cap_sys_boot or watching utmp
lxc 20160923170858.449 INFO     lxc_start - start.c:resolve_clone_flags:1014 - Cloning a new user namespace
lxc 20160923170858.455 DEBUG    lxc_conf - conf.c:instantiate_veth:2615 - instantiated veth 'veth6Q9A24/vethKDH4IH', index is '490'
lxc 20160923170858.455 INFO     lxc_cgroup - cgroups/cgroup.c:cgroup_init:68 - cgroup driver cgroupfs-ng initing for alpine-edge
lxc 20160923170858.498 DEBUG    lxc_conf - conf.c:lxc_assign_network:3058 - move 'eth0' to '4688'
lxc 20160923170858.498 NOTICE   lxc_start - start.c:do_start:778 - switching to gid/uid 0/0 in new user namespace
lxc 20160923170858.498 DEBUG    lxc_conf - conf.c:setup_rootfs:1215 - mounted '/var/lib/lxd/containers/alpine-edge/rootfs' on '/usr/lib/x86_64-linux-gnu/lxc'
lxc 20160923170858.498 INFO     lxc_conf - conf.c:setup_utsname:843 - 'alpine-edge' hostname has been setup
lxc 20160923170858.526 DEBUG    lxc_conf - conf.c:setup_hw_addr:2146 - mac address '00:16:3e:94:b1:9b' on 'eth0' has been setup
lxc 20160923170858.526 DEBUG    lxc_conf - conf.c:setup_netdev:2373 - 'eth0' has been setup
lxc 20160923170858.526 INFO     lxc_conf - conf.c:setup_network:2394 - network has been setup
lxc 20160923170858.526 INFO     lxc_conf - conf.c:mount_autodev:1072 - Mounting container /dev
lxc 20160923170858.526 INFO     lxc_conf - conf.c:mount_autodev:1095 - Mounted tmpfs onto /usr/lib/x86_64-linux-gnu/lxc/dev
lxc 20160923170858.526 INFO     lxc_conf - conf.c:mount_autodev:1113 - Mounted container /dev
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1657 - remounting /dev/fuse on /usr/lib/x86_64-linux-gnu/lxc/dev/fuse to respect bind or remount options
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1672 - (at remount) flags for /dev/fuse was 4096, required extra flags are 0
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1681 - mountflags already was 4096, skipping remount
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1707 - mounted '/dev/fuse' on '/usr/lib/x86_64-linux-gnu/lxc/dev/fuse', type 'none'
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1657 - remounting /dev/net/tun on /usr/lib/x86_64-linux-gnu/lxc/dev/net/tun to respect bind or remount options
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1672 - (at remount) flags for /dev/net/tun was 4096, required extra flags are 0
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1681 - mountflags already was 4096, skipping remount
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1707 - mounted '/dev/net/tun' on '/usr/lib/x86_64-linux-gnu/lxc/dev/net/tun', type 'none'
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1657 - remounting /proc/sys/fs/binfmt_misc on /usr/lib/x86_64-linux-gnu/lxc/proc/sys/fs/binfmt_misc to respect bind or remount options
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1672 - (at remount) flags for /proc/sys/fs/binfmt_misc was 4110, required extra flags are 14
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1707 - mounted '/proc/sys/fs/binfmt_misc' on '/usr/lib/x86_64-linux-gnu/lxc/proc/sys/fs/binfmt_misc', type 'none'
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1657 - remounting /sys/fs/fuse/connections on /usr/lib/x86_64-linux-gnu/lxc/sys/fs/fuse/connections to respect bind or remount options
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1672 - (at remount) flags for /sys/fs/fuse/connections was 4096, required extra flags are 0
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1681 - mountflags already was 20480, skipping remount
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1707 - mounted '/sys/fs/fuse/connections' on '/usr/lib/x86_64-linux-gnu/lxc/sys/fs/fuse/connections', type 'none'
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1657 - remounting /sys/fs/pstore on /usr/lib/x86_64-linux-gnu/lxc/sys/fs/pstore to respect bind or remount options
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1672 - (at remount) flags for /sys/fs/pstore was 4096, required extra flags are 0
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1681 - mountflags already was 20480, skipping remount
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1707 - mounted '/sys/fs/pstore' on '/usr/lib/x86_64-linux-gnu/lxc/sys/fs/pstore', type 'none'
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1657 - remounting /sys/kernel/debug on /usr/lib/x86_64-linux-gnu/lxc/sys/kernel/debug to respect bind or remount options
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1672 - (at remount) flags for /sys/kernel/debug was 4096, required extra flags are 0
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1681 - mountflags already was 20480, skipping remount
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1707 - mounted '/sys/kernel/debug' on '/usr/lib/x86_64-linux-gnu/lxc/sys/kernel/debug', type 'none'
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1657 - remounting /sys/kernel/security on /usr/lib/x86_64-linux-gnu/lxc/sys/kernel/security to respect bind or remount options
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1672 - (at remount) flags for /sys/kernel/security was 4096, required extra flags are 0
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1681 - mountflags already was 20480, skipping remount
lxc 20160923170858.527 DEBUG    lxc_conf - conf.c:mount_entry:1707 - mounted '/sys/kernel/security' on '/usr/lib/x86_64-linux-gnu/lxc/sys/kernel/security', type 'none'
lxc 20160923170858.528 DEBUG    lxc_conf - conf.c:mount_entry:1657 - remounting /var/lib/lxd/devlxd on /usr/lib/x86_64-linux-gnu/lxc/dev/lxd to respect bind or remount options
lxc 20160923170858.528 DEBUG    lxc_conf - conf.c:mount_entry:1672 - (at remount) flags for /var/lib/lxd/devlxd was 1024, required extra flags are 0
lxc 20160923170858.528 DEBUG    lxc_conf - conf.c:mount_entry:1681 - mountflags already was 4096, skipping remount
lxc 20160923170858.528 DEBUG    lxc_conf - conf.c:mount_entry:1707 - mounted '/var/lib/lxd/devlxd' on '/usr/lib/x86_64-linux-gnu/lxc/dev/lxd', type 'none'
lxc 20160923170858.528 DEBUG    lxc_conf - conf.c:mount_entry:1657 - remounting /var/lib/lxd/shmounts/alpine-edge on /usr/lib/x86_64-linux-gnu/lxc/dev/.lxd-mounts to respect bind or remount options
lxc 20160923170858.528 DEBUG    lxc_conf - conf.c:mount_entry:1672 - (at remount) flags for /var/lib/lxd/shmounts/alpine-edge was 1024, required extra flags are 0
lxc 20160923170858.528 DEBUG    lxc_conf - conf.c:mount_entry:1681 - mountflags already was 4096, skipping remount
lxc 20160923170858.528 DEBUG    lxc_conf - conf.c:mount_entry:1707 - mounted '/var/lib/lxd/shmounts/alpine-edge' on '/usr/lib/x86_64-linux-gnu/lxc/dev/.lxd-mounts', type 'none'
lxc 20160923170858.528 INFO     lxc_conf - conf.c:mount_file_entries:1927 - mount points have been setup
lxc 20160923170858.528 ERROR    lxc_cgfsng - cgroups/cgfsng.c:do_secondstage_mounts_if_needed:1273 - Operation not permitted - Error remounting /usr/lib/x86_64-linux-gnu/lxc/sys/fs/cgroup/systemd read-only
lxc 20160923170858.528 ERROR    lxc_conf - conf.c:lxc_mount_auto_mounts:781 - Operation not permitted - error mounting /sys/fs/cgroup
lxc 20160923170858.528 ERROR    lxc_conf - conf.c:lxc_setup:3758 - failed to setup the automatic mounts for 'alpine-edge'
lxc 20160923170858.528 ERROR    lxc_start - start.c:do_start:834 - failed to setup the container
lxc 20160923170858.528 ERROR    lxc_sync - sync.c:__sync_wait:57 - An error occurred in another process (expected sequence number 3)
lxc 20160923170858.528 WARN     lxc_conf - conf.c:lxc_delete_network:2919 - failed to remove interface 490 'eth0'
lxc 20160923170858.528 ERROR    lxc_start - start.c:__lxc_start:1354 - failed to spawn 'alpine-edge'
lxc 20160923170858.574 INFO     lxc_conf - conf.c:run_script_argv:367 - Executing script '/usr/share/lxcfs/lxc.reboot.hook' for container 'alpine-edge', config section 'lxc'
lxc 20160923170859.078 INFO     lxc_conf - conf.c:run_script_argv:367 - Executing script '/usr/bin/lxd callhook /var/lib/lxd 4 stop' for container 'alpine-edge', config section 'lxc'
lxc 20160923170859.099 ERROR    lxc_conf - conf.c:run_buffer:347 - Script exited with status 1
lxc 20160923170859.099 ERROR    lxc_start - start.c:lxc_fini:555 - failed to run post-stop hooks for container 'alpine-edge'.
lxc 20160923170859.099 WARN     lxc_commands - commands.c:lxc_cmd_rsp_recv:172 - command get_cgroup failed to receive response
lxc 20160923170859.099 WARN     lxc_commands - commands.c:lxc_cmd_rsp_recv:172 - command get_cgroup failed to receive response
lxc 20160923171117.629 INFO     lxc_confile - confile.c:config_idmap:1500 - read uid map: type u nsid 0 hostid 19695264 range 65536
lxc 20160923171117.629 INFO     lxc_confile - confile.c:config_idmap:1500 - read uid map: type g nsid 0 hostid 19695264 range 65536
lxc 20160923171117.633 INFO     lxc_confile - confile.c:config_idmap:1500 - read uid map: type u nsid 0 hostid 19695264 range 65536
lxc 20160923171117.633 INFO     lxc_confile - confile.c:config_idmap:1500 - read uid map: type g nsid 0 hostid 19695264 range 65536
lxc 20160923171545.046 INFO     lxc_confile - confile.c:config_idmap:1500 - read uid map: type u nsid 0 hostid 19695264 range 65536
lxc 20160923171545.046 INFO     lxc_confile - confile.c:config_idmap:1500 - read uid map: type g nsid 0 hostid 19695264 range 65536
lxc 20160923171545.571 INFO     lxc_confile - confile.c:config_idmap:1500 - read uid map: type u nsid 0 hostid 19695264 range 65536
lxc 20160923171545.571 INFO     lxc_confile - confile.c:config_idmap:1500 - read uid map: type g nsid 0 hostid 19695264 range 65536
lxc 20160923171545.580 INFO     lxc_confile - confile.c:config_idmap:1500 - read uid map: type u nsid 0 hostid 19695264 range 65536
lxc 20160923171545.580 INFO     lxc_confile - confile.c:config_idmap:1500 - read uid map: type g nsid 0 hostid 19695264 range 65536

有什么解决办法吗？

lxd
Martin Hope
lepe
Asked: 2016-09-16 17:08:11 +0800 CST
  • 2

在这篇文章之后，我正在尝试在 Ubuntu Server 14.04 中安装 LXD 。

我过去在其他类似的设置中成功地做到了这一点，但这次抛出了这个错误：

add-apt-repository ppa:ubuntu-lxc/lxd-stable
sh: 1: /usr/lib/linuxmint/mintSources/mintSources.py: not found

搜索任何解决方案时，大多数页面都建议安装损坏/混合的 Mint，但是我从未在该服务器上安装过 Mint（自从它被收购以来一直是 14.04）。
除了官方存储库之外，它没有额外的存储库。

服务器已更新为最新版本，所以我对此感到困惑。

知道为什么会这样吗？

14.04
Martin Hope
lepe
Asked: 2016-07-12 18:30:54 +0800 CST
  • 9

我的目标是在 Qemu（在 Ubuntu 16.04 x64 主机上）运行 Ubuntu 16.04（ARM）。

我试图按照这个-old-教程没有成功：

Home directory not accessible: Permission denied
pulseaudio: pa_context_connect() failed
pulseaudio: Reason: Connection refused
pulseaudio: Failed to initialize PA contextaudio: Could not init `pa' audio driver
Could not initialize SDL(No available video device) - exiting

我没有使用那里使用的debian_squeeze_armel_standard.qcow2图像，而是使用ubuntu-16.04-preinstalled-server-armhf+raspi2.img。

忘记上面提到的文章，在 Qemu 之上运行 Ubuntu 16.04-arm 的正确方法是什么？

如果不能轻松地在 Qemu 上运行它，还有其他选择吗？

virtualization
Martin Hope
lepe
Asked: 2016-06-11 23:56:38 +0800 CST
  • 2

我有一个带有 btrfs（SSD 驱动器）作为 / 的 Ubuntu 14.04 服务器，并且我将另一个驱动器（SATA）绑定到 /home。SSD 驱动器报告可用空间不足，所以我阅读了这篇文章，应用了一些建议，并删除了一些文件。这是 btrfs 现在报告的内容：

# btrfs fi show /
Label: system  uuid: 2322b989-2110-494b-96b0-40aaee2f3998
    Total devices 1 FS bytes used 6.20GiB
    devid    1 size 26.08GiB used 22.52GiB path /dev/sdc1

# btrfs fi df /
Data, single: total=21.76GiB, used=5.69GiB
System, single: total=4.00MiB, used=16.00KiB
Metadata, single: total=776.00MiB, used=522.03MiB

# btrfs subvolume list /

ID 257 gen 2090434 top level 5 path @
ID 258 gen 1048023 top level 5 path @home

df -h
/dev/sdc1        27G  6.3G   20G  25% /

删除@home 是否安全，因为它实际上是绑定到另一个驱动器？但在此之前，我只是想确保我正确阅读了上述数字......驱动器使用了大约 26G 中的 6GB，对吧？

更新

这是我的 fstab（相关部分）：

UUID=2322b989-2110-494b-96b0-40aaee2f3998   /   btrfs   noatime,nodiratime,notreelog,ssd,discard,subvol=@   0   1

UUID=858a4a9d-a901-47c7-89d2-0ef97ef6f23f   /mnt/ext ext4  defaults,acl,user_xattr,noatime,nodiratime 0  1

/mnt/ext/home /home   none bind
btrfs
Martin Hope
lepe
Asked: 2016-05-18 21:44:32 +0800 CST
  • 1

使用：Ubuntu Server 14.04 x64 LXD 2.0.0

我有几个容器（它们都运行“alpine-edge”），我在其中运行 lighttpd + mysql。

问题是每次我重新启动容器时，我都必须手动重新启动这些服务，因为它们不会自动启动。

我需要做什么来解决这个问题？

更新

我正在使用的临时解决方法是：

lxc exec alpine-edge service lighttpd start

从父操作系统（在初始化脚本中）。但我相信应该有一种方法可以在容器内自动执行它，所以如果我手动重启它（容器），我不必每次都执行该命令。

lxc
Martin Hope
lepe
Asked: 2016-05-13 01:15:41 +0800 CST
  • 0

我有一个 NTFS 驱动器绑定到我家中的一个目录（绑定在 fstab 中指定），如下所示：

UUID=1A782A664EB8 /mnt/windows ntfs permissions,locale=en_US.utf8 0 2
/mnt/windows/Users/me/Documents /home/me/Documents none bind 0 0

文件的权限设置为 666，目录的权限设置为 777。

这是我的 /etc/updatedb.conf：

PRUNE_BIND_MOUNTS="yes"
PRUNEPATHS="/tmp /var/spool /media /home/.ecryptfs /var/lib/schroot"
PRUNEFS="NFS nfs nfs4 rpc_pipefs afs binfmt_misc proc smbfs autofs iso9660 ncpfs coda devpts ftpfs devfs mfs shfs sysfs cifs lustre tmpfs usbfs udf fuse.glusterfs fuse.sshfs curlftpfs ecryptfs fusesmb devtmpfs"

注意：主目录未加密。

突触似乎无法索引这些文件。有没有办法强制突触索引该目录？

synapse
Martin Hope
lepe
Asked: 2016-05-09 19:34:25 +0800 CST
  • 5

我不确定是不是我，但我对 16.04 live CD 有一些问题。亲眼看看（使用 VirtualBox）：

Ubuntu 16.04 开始 Ubuntu 16.04 安装屏幕

VirtualBox 设置： 基本内存：3000MB 处理器：1 视频内存：128MB 未启用 3D 加速。

奇怪的是，我在 HP Touchsmart 14 笔记本电脑上尝试了 Kubuntu 16.04 live CD，同样的事情发生了。Xubuntu 16.04（同一台笔记本电脑）没有发生这种情况。可能是什么问题？

virtualbox
Martin Hope
lepe
Asked: 2011-02-14 23:32:52 +0800 CST
  • 2

我安装了 Ubuntu，我正在教我妈妈使用它。一切都很好，只是她的新USB 笔式驱动器（8GB - fat32）无法在 Linux 中运行（但它在 Windows 和 Mac 中运行）。

操作系统：Kubuntu Lucid 内核：2.6.32-28-generic

“ lsusb ”之前和之后：

root@desktop:/etc# lsusb
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

root@desktop:/etc# lsusb
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 005: ID 3538:0901 Power Quotient International Co., Ltd
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

dmesg：

[ 1061.544029] usb 3-1: new full speed USB device using uhci_hcd and address 2
[ 1061.709572] usb 3-1: configuration #1 chosen from 1 choice
[ 1061.744920] scsi5 : SCSI emulation for USB Mass Storage devices
[ 1061.752290] usb-storage: device found at 2
[ 1061.752297] usb-storage: waiting for device to settle before scanning
[ 1066.753954] usb-storage: device scan complete
[ 1066.756871] scsi 5:0:0:0: Direct-Access-RBC                   PQ: 2 ANSI: 4
[ 1066.763379] scsi 5:0:0:0: Attached scsi generic sg3 type 14

但在“ fdisk -l ”中没有显示，也没有在 /media/ 下找到：

root@desktop:/etc# fdisk -l

Disk /dev/sda: 60.0 GB, 60022480896 bytes
255 heads, 63 sectors/track, 7297 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x90789078

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1        7296    58605088+   7  Linux

还有什么可以做的？任何帮助表示赞赏。

usb-drive
Martin Hope
lepe
Asked: 2011-02-10 17:37:14 +0800 CST
  • 9

早在 2006 年，Ray (3DLover) 在 http://ubuntuforums.org/showthread.php?t=309680中发布了同样的问题， 但没有一个答案真的有用。现在在 AskUbuntu 社区的一点帮助下，我想再次重复他的问题，看看这次是否可以正确回答。

所以这就是问题（也是我希望的）：

我正在寻找一种用于在控制台中管理分区的 UI 工具。我已经安装了 Ubuntu Server，所以我根本没有 X Windows。fdisk 和 sfdisk 完全是命令行。parted 稍微好一点，但它并不是真正的 UI。cfdisk 有一些 UI，但它一次只能在一个磁盘上运行，并且没有配置 LVM 或 RAID 等高级选项。只是分区。

我喜欢在操作系统安装过程中可用的分区工具。您可以分区、配置 RAID 和 LMV 集。它可以用几个不同的文件系统格式化分区，它可以设置标签，挂载选项，它可以将你的卷插入到你的 fstab 中。该工具是否可作为独立程序使用？我在任何地方都找不到它。我认为它被称为 parted_server，但我找不到太多关于在哪里获取它的信息。

过去，我运行 Ubuntu 安装程序只是为了使用它附带的分区管理器。（在进行分区编辑后取消安装）

有人帮我解决这个问题吗？谢谢

-射线

提前致谢。

[更新]用例：

我管理一些服务器（专用租赁服务），我无法通过多个 HDD 物理访问它们（因此没有 CD 选项）。我希望能够管理这些驱动器（分区、RAID、LMV 等），就像我在任何其他服务器上安装 Ubuntu Server Edition 时一样（使用安装 CD）。

安装 CD 随该应用程序一起提供，我确信应该有一种方法可以在正在运行的系统中安装和执行该应用程序（无需 CD）。

server