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需要有关 Linux 主机文件系统进入只读模式的任何提示

tag-icon • tag-icon linux centos xen citrix
需要有关 Linux 主机文件系统进入只读模式的任何提示

我在 XEN（Citrix）服务器上运行一个 CentOS 5.x Linux 客户机，有时它会神秘地进入只读模式。

我检查了文件系统中的错误，没有发现任何可疑的情况...:(

系统日志显示如下内容：

Mar  5 10:57:16 testsrv kernel: end_request: I/O error, dev xvdb, sector 309735103
Mar  5 10:57:16 testsrv kernel: end_request: I/O error, dev xvdb, sector 309735191
Mar  5 10:57:16 testsrv kernel: end_request: I/O error, dev xvdb, sector 309735279
Mar  5 10:57:16 testsrv kernel: end_request: I/O error, dev xvdb, sector 309735359
Mar  5 10:57:16 testsrv kernel: end_request: I/O error, dev xvdb, sector 309735447
Mar  5 10:57:16 testsrv kernel: end_request: I/O error, dev xvdb, sector 309735535
Mar  5 10:57:16 testsrv kernel: end_request: I/O error, dev xvdb, sector 309735103
Mar  5 10:57:16 testsrv kernel: end_request: I/O error, dev xvdb, sector 309735103
Mar  5 10:57:16 testsrv kernel: end_request: I/O error, dev xvdb, sector 307662855
Mar  5 10:57:16 testsrv kernel: end_request: I/O error, dev xvdb, sector 315316647
Mar  5 10:57:16 testsrv kernel: end_request: I/O error, dev xvdb, sector 315316655
Mar  5 10:57:16 testsrv kernel: end_request: I/O error, dev xvdb, sector 315316663
Mar  5 10:57:16 testsrv kernel: end_request: I/O error, dev xvdb, sector 315316671
Mar  5 10:57:16 testsrv kernel: end_request: I/O error, dev xvdb, sector 315316735
Mar  5 10:57:16 testsrv last message repeated 38 times
Mar  5 10:57:16 testsrv kernel: end_request: I/O error, dev xvdb, sector 307662855
Mar  5 10:57:16 testsrv kernel: end_request: I/O error, dev xvdb, sector 262717023
Mar  5 10:57:16 testsrv last message repeated 2 times
Mar  5 10:57:16 testsrv kernel: end_request: I/O error, dev xvdb, sector 258482255
Mar  5 10:57:16 testsrv kernel: end_request: I/O error, dev xvdb, sector 141041743
Mar  5 10:57:16 testsrv kernel: EXT3-fs error (device xvdb1): ext3_find_entry: reading directory #17629185 offset 0
Mar  5 10:57:16 testsrv kernel: Aborting journal on device xvdb1.
Mar  5 10:57:16 testsrv kernel: end_request: I/O error, dev xvdb, sector 16519
Mar  5 10:57:16 testsrv kernel: Buffer I/O error on device xvdb1, logical block 2057
Mar  5 10:57:16 testsrv kernel: lost page write due to I/O error on xvdb1
Mar  5 10:57:16 testsrv kernel: end_request: I/O error, dev xvdb, sector 63
Mar  5 10:57:16 testsrv kernel: Buffer I/O error on device xvdb1, logical block 0
Mar  5 10:57:16 testsrv kernel: lost page write due to I/O error on xvdb1
Mar  5 10:57:16 testsrv kernel: end_request: I/O error, dev xvdb, sector 59692223
Mar  5 10:57:16 testsrv last message repeated 33 times
Mar  5 10:57:16 testsrv kernel: ext3_abort called.
Mar  5 10:57:16 testsrv kernel: EXT3-fs error (device xvdb1): ext3_journal_start_sb: Detected aborted journal
Mar  5 10:57:16 testsrv kernel: Remounting filesystem read-only

答案1

@DejanLekic：tune2fsetc 只会扫描文件系统中的错误。您观察到的内核错误消息与硬件故障有关，硬件故障位于文件系统之下的一层。现代文件系统和操作系统非常重视硬件故障；ext* 将自身重新挂载为只读，以防止任何写入访问造成进一步损坏，XFS 将自身完全关闭等等。

所以您遇到了某种硬件问题。RAID 控制器损坏、硬盘损坏、SAN 不可靠，还有其他问题。

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