Public bug reported: After installing Ubuntu 13.10 Server on a server (Fujitsu PRIMERGY RX300 S8) with the LSI SAS 2008 RAID controller (Fujitsu D2607) and configuring it to use the XFS filesystem, the FS is created with sector size set to 4 kilobytes. The installer should respect the sector size of the underlying hardware.
XFS refuses O_DIRECT accesses that are not a multiple of the configured sector size, breaking assumptions made in some software that uses O_DIRECT, such as libvirt disks using cache=none, and the the PostgreSQL pg_test_fsync utility (didn't try running Postgres with open_sync): http://www.postgresql.org/message-id/CABRT9RBkfUPjemsA- jhQ=me0tclggnk6ffywkanw+xgbykg...@mail.gmail.com Partition after installation: # xfs_info /dev/sda1 meta-data=/dev/disk/by-uuid/987c0579-bd67-4f80-bbc6-50f975ee4c1d isize=256 agcount=16, agsize=4341104 blks = sectsz=4096 attr=2 [...] ^^^^ Yet kernel knows that the underlying storage has 512-byte sectors: # cat /sys/block/sda/queue/logical_block_size 512 # cat /sys/block/sda/queue/physical_block_size 512 Even a new fresh filesystem created with mkfs.xfs defaults uses 512B sectors: # mkfs.xfs /dev/sda5 meta-data=/dev/sda5 isize=256 agcount=4, agsize=489856 blks = sectsz=512 attr=2, projid32bit=0 [...] ^^^ This can be reproduced by manually specifying sector size: mkfs.xfs -s size=4096 # lspci |grep -i raid 01:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 2008 [Falcon] (rev 03) After re-creating my root partition with XFS defaults, the issues are no longer occurring. ** Affects: ubuntu Importance: Undecided Status: New ** Description changed: After installing Ubuntu 13.10 Server on a server (Fujitsu PRIMERGY RX300 S8) with the LSI SAS 2008 RAID controller (Fujitsu D2607) and configuring it to use the XFS filesystem, the FS is created with sector size set to 4 kilobytes. The installer should respect the sector size of the underlying hardware. XFS refuses O_DIRECT accesses that are not a multiple of the configured sector size, breaking assumptions made in some software that uses O_DIRECT, such as libvirt disks using cache=none, and the the PostgreSQL pg_test_fsync utility (didn't try running Postgres with open_sync): http://www.postgresql.org/message-id/CABRT9RBkfUPjemsA- jhQ=me0tclggnk6ffywkanw+xgbykg...@mail.gmail.com Partition after installation: # xfs_info /dev/sda1 meta-data=/dev/disk/by-uuid/987c0579-bd67-4f80-bbc6-50f975ee4c1d isize=256 agcount=16, agsize=4341104 blks - = sectsz=4096 attr=2 + = sectsz=4096 attr=2 [...] Yet kernel knows that the underlying storage has 512-byte sectors: # cat /sys/block/sda/queue/logical_block_size 512 # cat /sys/block/sda/queue/physical_block_size 512 Even a new fresh filesystem created with mkfs.xfs defaults uses 512B sectors: # mkfs.xfs /dev/sda5 meta-data=/dev/sda5 isize=256 agcount=4, agsize=489856 blks - = sectsz=512 attr=2, projid32bit=0 + = sectsz=512 attr=2, projid32bit=0 [...] - This can be reproduced by manually specifying sector size: mkfs.xfs -s - size=4096 + This can be reproduced by manually specifying sector size: + mkfs.xfs -s size=4096 # lspci |grep -i raid 01:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 2008 [Falcon] (rev 03) ** Description changed: After installing Ubuntu 13.10 Server on a server (Fujitsu PRIMERGY RX300 S8) with the LSI SAS 2008 RAID controller (Fujitsu D2607) and configuring it to use the XFS filesystem, the FS is created with sector size set to 4 kilobytes. The installer should respect the sector size of the underlying hardware. XFS refuses O_DIRECT accesses that are not a multiple of the configured sector size, breaking assumptions made in some software that uses O_DIRECT, such as libvirt disks using cache=none, and the the PostgreSQL pg_test_fsync utility (didn't try running Postgres with open_sync): http://www.postgresql.org/message-id/CABRT9RBkfUPjemsA- jhQ=me0tclggnk6ffywkanw+xgbykg...@mail.gmail.com Partition after installation: # xfs_info /dev/sda1 meta-data=/dev/disk/by-uuid/987c0579-bd67-4f80-bbc6-50f975ee4c1d isize=256 agcount=16, agsize=4341104 blks = sectsz=4096 attr=2 - [...] + [...] ^^^^ Yet kernel knows that the underlying storage has 512-byte sectors: # cat /sys/block/sda/queue/logical_block_size 512 # cat /sys/block/sda/queue/physical_block_size 512 Even a new fresh filesystem created with mkfs.xfs defaults uses 512B sectors: # mkfs.xfs /dev/sda5 meta-data=/dev/sda5 isize=256 agcount=4, agsize=489856 blks = sectsz=512 attr=2, projid32bit=0 - [...] + [...] ^^^ This can be reproduced by manually specifying sector size: mkfs.xfs -s size=4096 # lspci |grep -i raid 01:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 2008 [Falcon] (rev 03) + + After re-creating my root partition with XFS defaults, the issues are no + longer occurring. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1278875 Title: XFS filesystem created with 4k sectors by installer on LSI SAS RAID To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1278875/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
