Hello, today our HP XW9300 dual opteron workstation with 8GB memory and Suse 9.3 reported problems with the ReiserFS and became unreachable. In the logs the beginning of the problems can be traced back to a PCI-DMA kernel messages complaining about IOMMU space. The relevant part of /var/log/messages is attached. Has someone seen this problem before and is there a way to avoid it? Many thanks, Markus Jun 15 04:29:09 fe72747 kernel: PCI-DMA: Out of IOMMU space for 524288 bytes at device 0000:00:07.0 Jun 15 04:29:09 fe72747 kernel: end_request: I/O error, dev sda, sector 453070313 Jun 15 04:29:09 fe72747 kernel: Buffer I/O error on device sda7, logical block 53722000 Jun 15 04:29:09 fe72747 kernel: lost page write due to I/O error on sda7 Jun 15 04:29:09 fe72747 kernel: Buffer I/O error on device sda7, logical block 53722001 Jun 15 04:29:09 fe72747 kernel: lost page write due to I/O error on sda7 Jun 15 04:29:09 fe72747 kernel: Buffer I/O error on device sda7, logical block 53722002 Jun 15 04:29:09 fe72747 kernel: lost page write due to I/O error on sda7 Jun 15 04:29:09 fe72747 kernel: Buffer I/O error on device sda7, logical block 53722003 Jun 15 04:29:09 fe72747 kernel: lost page write due to I/O error on sda7 Jun 15 04:29:09 fe72747 kernel: Buffer I/O error on device sda7, logical block 53722004 Jun 15 04:29:09 fe72747 kernel: lost page write due to I/O error on sda7 Jun 15 04:29:09 fe72747 kernel: Buffer I/O error on device sda7, logical block 53722005 Jun 15 04:29:09 fe72747 kernel: lost page write due to I/O error on sda7 Jun 15 04:29:09 fe72747 kernel: Buffer I/O error on device sda7, logical block 53722006 Jun 15 04:29:09 fe72747 kernel: lost page write due to I/O error on sda7 Jun 15 04:29:09 fe72747 kernel: Buffer I/O error on device sda7, logical block 53722007 Jun 15 04:29:09 fe72747 kernel: lost page write due to I/O error on sda7 Jun 15 04:29:09 fe72747 kernel: Buffer I/O error on device sda7, logical block 53722008 Jun 15 04:29:09 fe72747 kernel: lost page write due to I/O error on sda7 Jun 15 04:29:09 fe72747 kernel: Buffer I/O error on device sda7, logical block 53722009 Jun 15 04:29:09 fe72747 kernel: lost page write due to I/O error on sda7 Jun 15 04:29:09 fe72747 kernel: PCI-DMA: Out of IOMMU space for 524288 bytes at device 0000:00:07.0 Jun 15 04:29:09 fe72747 kernel: end_request: I/O error, dev sda, sector 223241777 Jun 15 04:29:09 fe72747 kernel: PCI-DMA: Out of IOMMU space for 524288 bytes at device 0000:00:07.0 Jun 15 04:29:09 fe72747 kernel: end_request: I/O error, dev sda, sector 223242801 Jun 15 04:29:09 fe72747 kernel: PCI-DMA: Out of IOMMU space for 524288 bytes at device 0000:00:07.0 Jun 15 04:29:09 fe72747 kernel: end_request: I/O error, dev sda, sector 223243825 Jun 15 04:29:09 fe72747 kernel: PCI-DMA: Out of IOMMU space for 524288 bytes at device 0000:00:07.0 Jun 15 04:29:09 fe72747 kernel: end_request: I/O error, dev sda, sector 223244849 Jun 15 04:30:02 fe72747 kernel: ReiserFS: warning: is_tree_node: node level 23871 does not match to the expected one 1 Jun 15 04:30:02 fe72747 kernel: ReiserFS: sda1: warning: vs-5150: search_by_key: invalid format found in block 33434. Fsck? Jun 15 04:30:02 fe72747 kernel: ReiserFS: sda1: warning: zam-7001: io error in reiserfs_find_entry Jun 15 04:30:02 fe72747 /usr/sbin/cron[7739]: (root) CMD (/etc/venus/2.1.0/bin/scCronRunner /etc/venus/cron/every15Minutes /var/venus/logs/cron/every15Minutes 5 90 >/dev/null 2>&1) Jun 15 04:30:02 fe72747 /usr/sbin/cron[7741]: (root) CMD (/etc/venus/2.1.0/bin/scCronRunner /etc/venus/cron/every5Minutes /var/venus/logs/cron/every5Minutes 5 90 >/dev/null 2>&1) Jun 15 04:30:02 fe72747 kernel: ReiserFS: warning: is_tree_node: node level 23855 does not match to the expected one 1 Jun 15 04:30:02 fe72747 kernel: ReiserFS: sda1: warning: vs-5150: search_by_key: invalid format found in block 33235. Fsck? Jun 15 04:30:02 fe72747 kernel: ReiserFS: sda1: warning: zam-7001: io error in reiserfs_find_entry Jun 15 04:30:02 fe72747 kernel: ReiserFS: sda1: warning: vs-7000: search_by_entry_key: search_by_key returned item position == 0 Jun 15 04:30:02 fe72747 kernel: ReiserFS: sda1: warning: zam-7001: io error in reiserfs_find_entry Jun 15 04:30:03 fe72747 kernel: ReiserFS: sda1: warning: vs-7000: search_by_entry_key: search_by_key returned item position == 0 Jun 15 04:30:03 fe72747 kernel: ReiserFS: sda1: warning: zam-7001: io error in reiserfs_find_entry Jun 15 04:30:09 fe72747 kernel: PCI-DMA: Out of IOMMU space for 524288 bytes at device 0000:00:07.0 Jun 15 04:30:09 fe72747 kernel: end_request: I/O error, dev sda, sector 233707817 Jun 15 04:30:09 fe72747 kernel: PCI-DMA: Out of IOMMU space for 524288 bytes at device 0000:00:07.0 Jun 15 04:30:09 fe72747 kernel: end_request: I/O error, dev sda, sector 233708841 Jun 15 04:30:09 fe72747 kernel: PCI-DMA: Out of IOMMU space for 524288 bytes at device 0000:00:07.0 Jun 15 04:30:09 fe72747 kernel: end_request: I/O error, dev sda, sector 233709865