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Hi Eric, There is enough disk space in the fs. [root@domU-12-31-39-07-81-36 StoreGrid]# df -lh Filesystem Size Used Avail Use% Mounted on /dev/sda1 9.9G 2.9G 6.6G 31% / /dev/sdb 147G 188M 140G 1% /mnt none 854M 0 854M 0% /dev/shm /dev/sdh 5.0G 25M 5.0G 1% /mymountpoint Also, the output of modinfo is as follows, [root@domU-12-31-39-07-81-36 StoreGrid]# modinfo xfs filename: /lib/modules/2.6.21.7-2.fc8xen/kernel/fs/xfs/xfs.ko license: GPL description: SGI XFS with ACLs, security attributes, large block numbers, no debug enabled author: Silicon Graphics, Inc. srcversion: C7114C18263E3067C64F2BC depends: vermagic: 2.6.21-2952.fc8xen SMP mod_unload 686 4KSTACKS I have installed xfs with yum by using the following command, yum install xfsprogs I think I have installed the kernel rpm xfs ko. Can you confirm if this is correct. Regards, Srinivasan On 02/23/2011 01:51 AM, Eric Sandeen wrote: On 2/22/11 9:44 AM, Srinivasan T wrote:Hi, We are running an C++ application in AWS EC2 instance (CentOS 5.4) mounted with an EBS Volume (say /mymountpoint). We do more simultaneous writes to the EBS Volume from our application. But at some point we get 'ERROR: Input/output error'. After this, 'ls -l /mymountpoint' command itself fails with the i/o error. The filesystem which we use for the EBS Volume is xfs. I unmounted the drive and done xfs_check and again mounted the drive.xfs_check is read-only, FWIW, a task best handled these days by xfs_repair -n.Now, everything seems to be working fine. But the issue still persists everytime when we do simultaneous writes.> I believe the following details will be useful, [root@domU-12-31-39-07-81-36 StoreGrid]# cat /etc/redhat-release CentOS release 5.4 (Final)is quota in use? Might you be running out of space on the fs? Sadly I'm not even sure what xfs you might be running; there were centos kmod rpms of older xfs for a while, and then more recent kernels have xfs.ko built in, because RHEL5 started with official support for XFS later on. line 1138 of file fs/xfs/xfs_trans.c does not line up with current RHEL5. "modinfo xfs" might tell us at least where the xfs module was found, and from there know where it came from. But, xfs support on RHEL is best handled by Red Hat, I'm afraid. And if this is an old xfs kmod (which *cough* I did for centos years ago) it's not going to be well supported by anyone. -if- you have xfs-kmod installed, and a kernel rpm which contains xfs.ko itself, I'd suggest trying again with the latter. Barring all that, perhaps this is a known problem more obvious to another person on this list ... -Eric |
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