Re: error when server detect target

[Mike Christie]

On 12/18/2010 06:57 PM, Mario Salcedo wrote:

Hi, anybody know what is this problem. I Have a IBM DS3300 and Centos
5.4. I have that in the logs



Is the target in RDAC mode? If so the commands are probably being sent 
to the controller that is not active. The failures are expected and ok.


Does centos have a driver/scsi/device_handler/scsi_dh_rdac module? If so 
you need to load (do modprobe scsi_dh_rdac) that before logging into the 
iscsi target. You probably want to be using Centos 5.5 too. I think 
there are some bug fixes in there for scsi_dh_rdac.


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Re: error when server detect target

[Aviad Raviv]

looks similar to my Please clarify is this normal when using
multipathing? (Buffer I/O error on device sdc, logical block 4)
thread...
mike gave some good pointers, though i didn't get this resolved for
Lenny yet (only for squeeze).

On Dec 19, 2:57 am, Mario Salcedo marios...@gmail.com wrote:
 Hi, anybody know what is this problem. I Have a IBM DS3300 and Centos
 5.4. I have that in the logs

 Dec 18 17:41:32 polisespejo kernel: end_request: I/O error, dev sde, sector 0
 Dec 18 17:41:32 polisespejo kernel: Buffer I/O error on device sde,
 logical block 0
 Dec 18 17:41:33 polisespejo kernel: end_request: I/O error, dev sde, sector 0
 Dec 18 17:41:33 polisespejo kernel: Buffer I/O error on device sde,
 logical block 0
 Dec 18 17:41:33 kernel: end_request: I/O error, dev sde, sector 0
 Dec 18 17:41:33 kernel: Buffer I/O error on device sde, logical block 0
 Dec 18 17:41:34 kernel: end_request: I/O error, dev sde, sector 0
 Dec 18 17:41:34 kernel: Buffer I/O error on device sde, logical block 0
 Dec 18 17:41:35 kernel: end_request: I/O error, dev sde, sector 0
 Dec 18 17:41:35 kernel: Buffer I/O error on device sde, logical block 0
 Dec 18 17:41:35 kernel: end_request: I/O error, dev sde, sector 0
 Dec 18 17:41:35 kernel: Buffer I/O error on device sde, logical block 0
 Dec 18 17:41:35 udevd-event[2555]: wait_for_sysfs: waiting for
 '/sys/devices/platform/host1/session1/target1:0:0/1:0:0:0/ioerr_cnt'
 failed
 Dec 18 17:41:36 polisespejo kernel: end_request: I/O error, dev sde, sector 0
 Dec 18 17:41:36 polisespejo kernel: Buffer I/O error on device sde,
 logical block 0
 Dec 18 17:41:36 polisespejo kernel: Dev sde: unable to read RDB block 0
 Dec 18 17:41:36 polisespejo kernel: end_request: I/O error, dev sde, sector 0
 Dec 18 17:41:36 polisespejo kernel: Buffer I/O error on device sde,
 logical block 0
 Dec 18 17:41:37 polisespejo kernel: end_request: I/O error, dev sde, sector 0
 Dec 18 17:41:37 polisespejo kernel: Buffer I/O error on device sde,
 logical block 0
 Dec 18 17:41:37 polisespejo kernel:  unable to read partition table
 Dec 18 17:41:37 polisespejo kernel: sd 1:0:0:0: Attached scsi disk sde
 Dec 18 17:41:37 polisespejo kernel: sd 1:0:0:0: Attached scsi generic sg7 
 type 0
 Dec 18 17:41:37 polisespejo kernel:   Vendor: IBM       Model:
 Universal Xport   Rev: 0250
 Dec 18 17:41:37 polisespejo kernel:   Type:   Direct-Access
           ANSI SCSI revision: 05
 Dec 18 17:41:37 polisespejo kernel: scsi 1:0:0:31: Attached scsi
 generic sg8 type 0

 Dec 18 17:41:37 polisespejo kernel: end_request: I/O error, dev sde,
 sector 4094218112
 Dec 18 17:41:37 polisespejo kernel: Buffer I/O error on device sde,
 logical block 511777264
 Dec 18 17:41:38 polisespejo kernel: end_request: I/O error, dev sde,
 sector 4094218112
 Dec 18 17:41:38 polisespejo kernel: Buffer I/O error on device sde,
 logical block 511777264
 Dec 18 17:41:38 polisespejo kernel: end_request: I/O error, dev sde,
 sector 4094218232
 Dec 18 17:41:41 polisespejo last message repeated 5 times
 Dec 18 17:41:41 polisespejo kernel: end_request: I/O error, dev sde,
 sector 4094218176
 Dec 18 17:41:42 polisespejo kernel: end_request: I/O error, dev sde,
 sector 4094218224
 Dec 18 17:41:42 polisespejo kernel: end_request: I/O error, dev sde,
 sector 4094218232
 Dec 18 17:41:42 polisespejo kernel: printk: 8 messages suppressed.
 Dec 18 17:41:42 polisespejo kernel: Buffer I/O error on device sde,
 logical block 511777279
 Dec 18 17:41:43 polisespejo kernel: end_request: I/O error, dev sde,
 sector 4094218232
 Dec 18 17:41:44 polisespejo kernel: end_request: I/O error, dev sde, sector 0
 Dec 18 17:41:48 polisespejo last message repeated 8 times
 Dec 18 17:41:48 polisespejo kernel: printk: 9 messages suppressed.
 Dec 18 17:41:48 polisespejo kernel: Buffer I/O error on device sde,
 logical block 0
 Dec 18 17:41:48 polisespejo kernel: end_request: I/O error, dev sde, sector 0
 Dec 18 17:41:53 polisespejo last message repeated 8 times
 Dec 18 17:41:53 polisespejo kernel: printk: 8 messages suppressed.
 Dec 18 17:41:53 polisespejo kernel: Buffer I/O error on device sde,
 logical block 0
 Dec 18 17:41:53 polisespejo kernel: end_request: I/O error, dev sde, sector 0
 Dec 18 17:41:58 polisespejo last message repeated 9 times
 Dec 18 17:41:58 polisespejo kernel: printk: 9 messages suppressed.
 Dec 18 17:41:58 polisespejo kernel: Buffer I/O error on device sde,
 logical block 0
 Dec 18 17:43:33 polisespejo rpc.statd[2705]: Version 1.0.9 Starting
 Dec 18 17:43:33 polisespejo rpc.statd[2705]: gethostbyname error for 
 polisespejo
 Dec 18 17:43:33 polisespejo rpc.statd[2705]: unable to register (statd, 1, 
 udp).
 Dec 18 17:43:34 polisespejo kernel: end_request: I/O error, dev sde, sector 0
 Dec 18 17:43:34 polisespejo kernel: Buffer I/O error on device sde,
 logical block 0
 Dec 18 17:43:34 polisespejo kernel: Buffer I/O error on device sde,
 logical block 1
 Dec 18 17:43:34 polisespejo kernel: Buffer I/O error on device sde,
 logical block 2
 Dec 18 17:43:34