Ext3-fs Sda1 Error Remounting Filesystem Read-only
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Ext3-fs Error Unable To Read Inode Block
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Ext3-fs Error (device Sda6) In Start_transaction Journal Has Aborted
answers are voted up and rise to the top How do you re-mount an ext3 fs readwrite after it gets mounted readonly from a disk error? up vote 17 down vote favorite 5 Its a relatively common problem when something goes wrong in a SAN for ext3 to detect the disk write errors and remount the filesystem read-only. Thats all well and good, only when the ext3-fs error ext3_free_blocks_sb bit already cleared for block SAN is fixed I can't figure out how to re-re-mount the filesystem read-write without rebooting. Behold: [root@localhost ~]# multipath -ll mpath0 (36001f93000a310000299000200000000) dm-2 XIOTECH,ISE1400 [size=1.1T][features=1 queue_if_no_path][hwhandler=0][rw] \_ round-robin 0 [prio=2][active] \_ 1:0:0:1 sdb 8:16 [active][ready] \_ 2:0:0:1 sdc 8:32 [active][ready] [root@localhost ~]# mount /dev/mapper/mpath0 /mnt/foo [root@localhost ~]# touch /mnt/foo/blah All good, now I yank the LUN out from under it. [root@localhost ~]# touch /mnt/foo/blah [root@localhost ~]# touch /mnt/foo/blah touch: cannot touch `/mnt/foo/blah': Read-only file system [root@localhost ~]# tail /var/log/messages Mar 18 13:17:33 localhost multipathd: sdb: tur checker reports path is down Mar 18 13:17:34 localhost multipathd: sdc: tur checker reports path is down Mar 18 13:17:35 localhost kernel: Aborting journal on device dm-2. Mar 18 13:17:35 localhost kernel: Buffer I/O error on device dm-2, logical block 1545 Mar 18 13:17:35 localhost kernel: lost page write due to I/O error on dm-2 Mar 18 13:17:36 localhost kernel: ext3_abort called. Mar 18 13:17:36 localhost kernel: EXT3-fs error (device dm-2): ext3_journal_start_sb: Detected aborted journal Mar 18 13:17:36 localhost kernel: Remounting filesystem read-only It only thinks its read-only, in reality its not even there. [root@localhost ~]# multipath -ll sdb: checker msg is "tur checker reports path is down" sdc: ch
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Ext3-fs Error (device Dm-0)
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Favorite Rating: Filesystem goes read-only without the underlying storage reporting errorsThis document (3735930) http://www.novell.com/support/kb/doc.php?id=3735930 is provided subject to the disclaimer at the end of this document. Environment Novell SUSE Linux Enterprise Server 10Novell SUSE Linux Enterprise Desktop 10Novell SUSE Linux Enterprise Server 9Novell Open Enterprise Server 1(Linux based)Novell Linux Desktop 9ext3, reiserfs or udf filesystem Situation Filesystem (ext3, reiserfs or udf) is remounted read-only by the kernel.No fs error errors are reported from the storage layer underlying the affected filesystem. Resolution For SLE 10 (Novell SUSE Linux Enterprise 10), this issue has been resolved for the ext3 filesystem as of kernel update 2.6.16.27-0.9, released Feb 23, 2007. For the reiserfs and udf filesystems, this issue is fixed as of the release of Service ext3-fs error (device Pack 1 (kernel 2.6.16.46-0.12).For SLE 9 (Novell SUSE Linux Enterprise 9) and OES 1, this issue is resolved for ext3, reiserfs and udf as of kernel 2.6.5-7.286. Additional Information When the filesystem code detects the occurrence of an error from which recovery without an fsck is not possible, it changes state to read-only to prevent further corruption.Normally, this behavior occurs when the underlying storage layer (like SCSI) reported an error when the filesystem code was trying to write out vital data. Errors or warnings reported by the underlying storage layer will precede the messages from the filesystem layer and the issue can only be addressed by fixing the hardware and/or configuration problem with the storage layer.With a system under heavy load, a bug in the read-ahead optimization part of the ext3, reiserfs and udf code could be triggered in which it mistook a temporary error condition from the storage layer ("please retry again later") for an unrecoverable error.