4 added 92 characters in body
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[335508.395387] ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[335508.395393] ata3.00: BMDMA stat 0x44
[335508.395398] ata3.00: failed command: READ DMA EXT
[335508.395406] ata3.00: cmd 25/00:08:28:13:81/00:00:3e:00:00/e0 tag 0 dma 4096 in
[335508.395406] res 51/40:08:28:13:81/00:00:3e:00:00/e0 Emask 0x9 (media error)
[335508.395411] ata3.00: status: { DRDY ERR }
[335508.395414] ata3.00: error: { UNC }
[335508.408263] ata3.00: configured for UDMA/100
[335508.408283] sd 2:0:0:0: [sda] Unhandled sense code
[335508.408287] sd 2:0:0:0: [sda]
[335508.408290] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[335508.408293] sd 2:0:0:0: [sda]
[335508.408296] Sense Key : Medium Error [current] [descriptor]
[335508.408301] Descriptor sense data with sense descriptors (in hex):
[335508.408304] 72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00
[335508.408319] 3e 81 13 28
[335508.408326] sd 2:0:0:0: [sda]
[335508.408331] Add. Sense: Unrecovered read error - auto reallocate failed
[335508.408334] sd 2:0:0:0: [sda] CDB:
[335508.408337] Read(10): 28 00 3e 81 13 28 00 00 08 00
[335508.408350] end_request: I/O error, dev sda, sector 1048646440
[335508.408366] ata3: EH complete
[335508.408381] EXT4-fs warning (device sda1): __ext4_read_dirblock:908: error reading directory block (ino 32768161, block 0)

[335508.395387] ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0<br />
[335508.395393] ata3.00: BMDMA stat 0x44<br />
[335508.395398] ata3.00: failed command: READ DMA EXT<br />
[335508.395406] ata3.00: cmd 25/00:08:28:13:81/00:00:3e:00:00/e0 tag 0 dma 4096 in<br />
[335508.395406]          res 51/40:08:28:13:81/00:00:3e:00:00/e0 Emask 0x9 (media error)<br />
[335508.395411] ata3.00: status: { DRDY ERR }<br />
[335508.395414] ata3.00: error: { UNC }<br />
[335508.408263] ata3.00: configured for UDMA/100<br />
[335508.408283] sd 2:0:0:0: [sda] Unhandled sense code<br />
[335508.408287] sd 2:0:0:0: [sda]<br />
[335508.408290] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE<br />
[335508.408293] sd 2:0:0:0: [sda]<br />
[335508.408296] Sense Key : Medium Error [current] [descriptor]<br />
[335508.408301] Descriptor sense data with sense descriptors (in hex):<br />
[335508.408304]         72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00<br />
[335508.408319]         3e 81 13 28<br />
[335508.408326] sd 2:0:0:0: [sda]<br />
[335508.408331] Add. Sense: Unrecovered read error - auto reallocate failed<br />
[335508.408334] sd 2:0:0:0: [sda] CDB:<br />
[335508.408337] Read(10): 28 00 3e 81 13 28 00 00 08 00<br />
[335508.408350] end_request: I/O error, dev sda, sector 1048646440<br />
[335508.408366] ata3: EH complete<br />
[335508.408381] EXT4-fs warning (device sda1): __ext4_read_dirblock:908: error reading directory block (ino 32768161, block 0)

[335508.395387] ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[335508.395393] ata3.00: BMDMA stat 0x44
[335508.395398] ata3.00: failed command: READ DMA EXT
[335508.395406] ata3.00: cmd 25/00:08:28:13:81/00:00:3e:00:00/e0 tag 0 dma 4096 in
[335508.395406] res 51/40:08:28:13:81/00:00:3e:00:00/e0 Emask 0x9 (media error)
[335508.395411] ata3.00: status: { DRDY ERR }
[335508.395414] ata3.00: error: { UNC }
[335508.408263] ata3.00: configured for UDMA/100
[335508.408283] sd 2:0:0:0: [sda] Unhandled sense code
[335508.408287] sd 2:0:0:0: [sda]
[335508.408290] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[335508.408293] sd 2:0:0:0: [sda]
[335508.408296] Sense Key : Medium Error [current] [descriptor]
[335508.408301] Descriptor sense data with sense descriptors (in hex):
[335508.408304] 72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00
[335508.408319] 3e 81 13 28
[335508.408326] sd 2:0:0:0: [sda]
[335508.408331] Add. Sense: Unrecovered read error - auto reallocate failed
[335508.408334] sd 2:0:0:0: [sda] CDB:
[335508.408337] Read(10): 28 00 3e 81 13 28 00 00 08 00
[335508.408350] end_request: I/O error, dev sda, sector 1048646440
[335508.408366] ata3: EH complete
[335508.408381] EXT4-fs warning (device sda1): __ext4_read_dirblock:908: error reading directory block (ino 32768161, block 0)

[335508.395387] ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0<br />
[335508.395393] ata3.00: BMDMA stat 0x44<br />
[335508.395398] ata3.00: failed command: READ DMA EXT<br />
[335508.395406] ata3.00: cmd 25/00:08:28:13:81/00:00:3e:00:00/e0 tag 0 dma 4096 in<br />
[335508.395406]          res 51/40:08:28:13:81/00:00:3e:00:00/e0 Emask 0x9 (media error)<br />
[335508.395411] ata3.00: status: { DRDY ERR }<br />
[335508.395414] ata3.00: error: { UNC }<br />
[335508.408263] ata3.00: configured for UDMA/100<br />
[335508.408283] sd 2:0:0:0: [sda] Unhandled sense code<br />
[335508.408287] sd 2:0:0:0: [sda]<br />
[335508.408290] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE<br />
[335508.408293] sd 2:0:0:0: [sda]<br />
[335508.408296] Sense Key : Medium Error [current] [descriptor]<br />
[335508.408301] Descriptor sense data with sense descriptors (in hex):<br />
[335508.408304]         72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00<br />
[335508.408319]         3e 81 13 28<br />
[335508.408326] sd 2:0:0:0: [sda]<br />
[335508.408331] Add. Sense: Unrecovered read error - auto reallocate failed<br />
[335508.408334] sd 2:0:0:0: [sda] CDB:<br />
[335508.408337] Read(10): 28 00 3e 81 13 28 00 00 08 00<br />
[335508.408350] end_request: I/O error, dev sda, sector 1048646440<br />
[335508.408366] ata3: EH complete<br />
[335508.408381] EXT4-fs warning (device sda1): __ext4_read_dirblock:908: error reading directory block (ino 32768161, block 0)
3 Listed dmesg info and revised the question.
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Since last Ubuntu kernel update (actual 14.04.1 LTS with GNU/Linux 3.13.0-39-generic i686) on my server I'm noticing something strange. My system boots normally - read-writable, no problems. But after a while (day or two) it becomes "Read-only file system", and I can't change files or folders anymore. I have 3 HDD mounted into different directories, and just one of them becomes read-only - the one which is SATA2 connected through an PCIE adapter card. The other two HDD are SCSI and working fine.

How candmesg lists some info for sda/sda1 which is the problematic HDD. I'm not sure how to interpret them. The HDD in question I'm using, is SATA2 through PCIE adapter, not ata3.00. It worked before the kernel update. Is there something I findcan try out why? What should be the problem?

[335508.395387] ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[335508.395393] ata3.00: BMDMA stat 0x44
[335508.395398] ata3.00: failed command: READ DMA EXT
[335508.395406] ata3.00: cmd 25/00:08:28:13:81/00:00:3e:00:00/e0 tag 0 dma 4096 in
[335508.395406] res 51/40:08:28:13:81/00:00:3e:00:00/e0 Emask 0x9 (media error)
[335508.395411] ata3.00: status: { DRDY ERR }
[335508.395414] ata3.00: error: { UNC }
[335508.408263] ata3.00: configured for UDMA/100
[335508.408283] sd 2:0:0:0: [sda] Unhandled sense code
[335508.408287] sd 2:0:0:0: [sda]
[335508.408290] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[335508.408293] sd 2:0:0:0: [sda]
[335508.408296] Sense Key : Medium Error [current] [descriptor]
[335508.408301] Descriptor sense data with sense descriptors (in hex):
[335508.408304] 72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00
[335508.408319] 3e 81 13 28
[335508.408326] sd 2:0:0:0: [sda]
[335508.408331] Add. Sense: Unrecovered read error - auto reallocate failed
[335508.408334] sd 2:0:0:0: [sda] CDB:
[335508.408337] Read(10): 28 00 3e 81 13 28 00 00 08 00
[335508.408350] end_request: I/O error, dev sda, sector 1048646440
[335508.408366] ata3: EH complete
[335508.408381] EXT4-fs warning (device sda1): __ext4_read_dirblock:908: error reading directory block (ino 32768161, block 0)

Since last Ubuntu kernel update on my server I'm noticing something strange. My system boots normally - read-writable, no problems. But after a while (day or two) it becomes "Read-only file system", and I can't change files or folders anymore. I have 3 HDD mounted into different directories, and just one of them becomes read-only.

How can I find out why? What should be the problem?

Since last Ubuntu kernel update (actual 14.04.1 LTS with GNU/Linux 3.13.0-39-generic i686) on my server I'm noticing something strange. My system boots normally - read-writable, no problems. But after a while (day or two) it becomes "Read-only file system", and I can't change files or folders anymore. I have 3 HDD mounted into different directories, and just one of them becomes read-only - the one which is SATA2 connected through an PCIE adapter card. The other two HDD are SCSI and working fine.

dmesg lists some info for sda/sda1 which is the problematic HDD. I'm not sure how to interpret them. The HDD in question I'm using, is SATA2 through PCIE adapter, not ata3.00. It worked before the kernel update. Is there something I can try out?

[335508.395387] ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[335508.395393] ata3.00: BMDMA stat 0x44
[335508.395398] ata3.00: failed command: READ DMA EXT
[335508.395406] ata3.00: cmd 25/00:08:28:13:81/00:00:3e:00:00/e0 tag 0 dma 4096 in
[335508.395406] res 51/40:08:28:13:81/00:00:3e:00:00/e0 Emask 0x9 (media error)
[335508.395411] ata3.00: status: { DRDY ERR }
[335508.395414] ata3.00: error: { UNC }
[335508.408263] ata3.00: configured for UDMA/100
[335508.408283] sd 2:0:0:0: [sda] Unhandled sense code
[335508.408287] sd 2:0:0:0: [sda]
[335508.408290] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[335508.408293] sd 2:0:0:0: [sda]
[335508.408296] Sense Key : Medium Error [current] [descriptor]
[335508.408301] Descriptor sense data with sense descriptors (in hex):
[335508.408304] 72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00
[335508.408319] 3e 81 13 28
[335508.408326] sd 2:0:0:0: [sda]
[335508.408331] Add. Sense: Unrecovered read error - auto reallocate failed
[335508.408334] sd 2:0:0:0: [sda] CDB:
[335508.408337] Read(10): 28 00 3e 81 13 28 00 00 08 00
[335508.408350] end_request: I/O error, dev sda, sector 1048646440
[335508.408366] ata3: EH complete
[335508.408381] EXT4-fs warning (device sda1): __ext4_read_dirblock:908: error reading directory block (ino 32768161, block 0)

2 deleted 8 characters in body; edited title
source | link

Why does UBUNTUUbuntu change my file system to read only

Since last Ubuntu kernel update on my server I'm noticing something strange. My system boots normally - read-writable, no problems. But after a while (day or two) it becomes "Read-only file system", and I can't change files or folders anymore. I have 3 HDD mounted into different directories, and just one of them becomes read-only.

How

How can I find out why? What should be the problem?

Why does UBUNTU change my file system to read only

Since last Ubuntu kernel update on my server I'm noticing something strange. My system boots normally - read-writable, no problems. But after a while (day or two) it becomes "Read-only file system", and I can't change files or folders anymore. I have 3 HDD mounted into different directories, and just one of them becomes read-only.

How can I find out why? What should be the problem?

Why does Ubuntu change my file system to read only

Since last Ubuntu kernel update on my server I'm noticing something strange. My system boots normally - read-writable, no problems. But after a while (day or two) it becomes "Read-only file system", and I can't change files or folders anymore. I have 3 HDD mounted into different directories, and just one of them becomes read-only.

How can I find out why? What should be the problem?

1
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