Windows Azure Ubuntu 磁盘只读

Question

我的 Ubuntu Windows Azure VM 不断将磁盘置于只读状态。 这是日志：

Jun  5 08:48:33 addagio-web kernel: [253582.732005] hv_storvsc vmbus_0_1: cmd 0x2a     scsi status 0x2 srb status 0x4
Jun  5 08:48:33 addagio-web kernel: [253582.732008] hv_storvsc vmbus_0_1: cmd 0x2a scsi status 0x2 srb status 0x4
Jun  5 08:48:33 addagio-web kernel: [253582.732012] hv_storvsc vmbus_0_1: cmd 0x2a scsi status 0x2 srb status 0x4
Jun  5 08:48:33 addagio-web kernel: [253582.732015] hv_storvsc vmbus_0_1: cmd 0x2a scsi status 0x2 srb status 0x4
Jun  5 08:48:33 addagio-web kernel: [253582.732018] hv_storvsc vmbus_0_1: cmd 0x2a scsi status 0x2 srb status 0x4
Jun  5 08:48:33 addagio-web kernel: [253582.732021] hv_storvsc vmbus_0_1: cmd 0x2a scsi status 0x2 srb status 0x4
Jun  5 08:48:33 addagio-web kernel: [253582.732025] hv_storvsc vmbus_0_1: cmd 0x2a scsi status 0x2 srb status 0x4
Jun  5 08:48:43 addagio-web kernel: [253592.758687] sd 0:0:0:0: [sda] Unhandled error code
Jun  5 08:48:43 addagio-web kernel: [253592.758691] sd 0:0:0:0: [sda]  Result: hostbyte=invalid driverbyte=DRIVER_OK
Jun  5 08:48:43 addagio-web kernel: [253592.758696] sd 0:0:0:0: [sda] CDB: Write(10): 2a 00 00 c0 48 01 00 00 08 00
Jun  5 08:48:43 addagio-web kernel: [253592.758704] end_request: critical target error, dev sda, sector 12601345
Jun  5 08:48:43 addagio-web kernel: [253592.832032] quiet_error: 12 callbacks suppressed
Jun  5 08:48:43 addagio-web kernel: [253592.832036] Buffer I/O error on device sda1, logical block 1573160
Jun  5 08:48:43 addagio-web kernel: [253592.833992] lost page write due to I/O error on sda1
Jun  5 08:48:43 addagio-web kernel: [253592.834012] sd 0:0:0:0: [sda]  Sense Key : No Sense [current]
Jun  5 08:48:43 addagio-web kernel: [253592.834026] sd 0:0:0:0: [sda]  Add. Sense: No additional sense information
Jun  5 08:48:43 addagio-web kernel: [253592.834046] sd 0:0:0:0: [sda]  Sense Key : No Sense [current]
Jun  5 08:48:43 addagio-web kernel: [253592.834062] sd 0:0:0:0: [sda]  Add. Sense: No additional sense information
Jun  5 08:48:43 addagio-web kernel: [253592.834076] sd 0:0:0:0: [sda]  Sense Key : No Sense [current]

Answer 1

您使用的是什么内核版本？ This thread 建议它专门用于将 storvsc 驱动程序与 ext4 文件系统一起使用，并且在 Linux 内核 3.9-rc1 中添加了一种解决方法。

因此，请尝试使用非 ext4 文件系统，或将内核更新到更高版本。

Answer 2

几天前，我们的 Ubuntu 16.04 LTS 服务器的根分区之一变为只读。关机，重新启动，解除分配没有帮助，sda1 到 / 仍然以只读模式安装。 我已将其报告给 Azure 支持。他们真的很有帮助。我们发现 sda 有一些错误。现在我不知道为什么。

这是我们修复它的方法：

修复文件系统

fsck /dev/sda1

使用读写选项重新挂载根分区

mount -o remount,rw /

检查是否成功

mount

我们的控制台消息

root@yourserver:~# fsck /dev/sda1

fsck from util-linux 2.27.1
e2fsck 1.42.13 (17-May-2015)
cloudimg-rootfs contains a file system with errors, check forced.
Pass 1: Checking inodes, blocks, and sizes
Deleted inode 2178 has zero dtime. Fix<y>? yes
Inodes that were part of a corrupted orphan linked list found. Fix<y>? yes
Inode 2179 was part of the orphaned inode list. FIXED.
Inode 256325 was part of the orphaned inode list. FIXED.
Inode 256327 was part of the orphaned inode list. FIXED.
Inode 256329 was part of the orphaned inode list. FIXED.
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
Block bitmap differences: -(46192--46873) -531081 -(6055714--6055716) -(6055720--6055726)
Fix<y>? yes
@ 987654341@
Fix<y>? yes
Free blocks count wrong for group #16 (25664, counted=25665).
Fix<y>? yes
Free blocks count wrong for group #184 (15998, counted=16008).
Fix<y>? yes
Free blocks count wrong (4654888, counted=4655581).
Fix<y>? yes
Inode bitmap differences: -(2178--2179) -256325 -256327 -256329
Fix<y>? yes
Free inodes count wrong for group #0 (39, counted=41).
Fix<y>? yes
Free inodes count wrong for group #16 (3, counted=6).
Fix<y>? yes
Directories count wrong for group #16 (2275, counted=2274).
Fix<y>? yes
Free inodes count wrong (3060151, counted=3060156).
Fix<y>? yes
<br>cloudimg-rootfs: ***** FILE SYSTEM WAS MODIFIED *****
cloudimg-rootfs: ***** REBOOT LINUX *****
cloudimg-rootfs: 699844/3760000 files (0.1% non-contiguous), 3024158/7679739 blocks

root@yourserver:~# mount -o remount,rw /

root@yourserver:~# mount

...
/dev/sda1 on / type ext4 (rw,relatime,discard,data=ordered)