----- Original Message ----- | | Hi All, | | I am having an issue with an XFS filesystem shutting down under high | load with very many small files. | Basically, I have around 3.5 - 4 million files on this filesystem. | New files are being written to the FS all the | time, until I get to 9-11 mln small files (35k on average). | | at some point I get the following in dmesg: | | [2870477.695512] Filesystem "sda5": XFS internal error | xfs_trans_cancel at line 1138 of file fs/xfs/xfs_trans.c. | Caller 0xffffffff8826bb7d | [2870477.695558] | [2870477.695559] Call Trace: | [2870477.695611] [<ffffffff88262c28>] | :xfs:xfs_trans_cancel+0x5b/0xfe | [2870477.695643] [<ffffffff8826bb7d>] :xfs:xfs_mkdir+0x57c/0x5d7 | [2870477.695673] [<ffffffff8822f3f8>] :xfs:xfs_attr_get+0xbf/0xd2 | [2870477.695707] [<ffffffff88273326>] :xfs:xfs_vn_mknod+0x1e1/0x3bb | [2870477.695726] [<ffffffff80264929>] _spin_lock_irqsave+0x9/0x14 | [2870477.695736] [<ffffffff802230e6>] __up_read+0x19/0x7f | [2870477.695764] [<ffffffff8824f8f4>] :xfs:xfs_iunlock+0x57/0x79 | [2870477.695776] [<ffffffff80264929>] _spin_lock_irqsave+0x9/0x14 | [2870477.695784] [<ffffffff802230e6>] __up_read+0x19/0x7f | [2870477.695791] [<ffffffff80209f4c>] __d_lookup+0xb0/0xff | [2870477.695803] [<ffffffff8020cd4a>] _atomic_dec_and_lock+0x39/0x57 | [2870477.695814] [<ffffffff8022d6db>] mntput_no_expire+0x19/0x89 | [2870477.695829] [<ffffffff80264929>] _spin_lock_irqsave+0x9/0x14 | [2870477.695837] [<ffffffff802230e6>] __up_read+0x19/0x7f | [2870477.695861] [<ffffffff8824f8f4>] :xfs:xfs_iunlock+0x57/0x79 | [2870477.695887] [<ffffffff882680af>] :xfs:xfs_access+0x3d/0x46 | [2870477.695899] [<ffffffff80264929>] _spin_lock_irqsave+0x9/0x14 | [2870477.695923] [<ffffffff802df4a3>] vfs_mkdir+0xe3/0x152 | [2870477.695933] [<ffffffff802dfa79>] sys_mkdirat+0xa3/0xe4 | [2870477.695953] [<ffffffff80260295>] tracesys+0x47/0xb6 | [2870477.695963] [<ffffffff802602f9>] tracesys+0xab/0xb6 | [2870477.695977] | [2870477.695985] xfs_force_shutdown(sda5,0x8) called from line 1139 | of file fs/xfs/xfs_trans.c. Return address = | 0xffffffff88262c46 | [2870477.696452] Filesystem "sda5": Corruption of in-memory data | detected. Shutting down filesystem: sda5 | [2870477.696464] Please umount the filesystem, and rectify the | problem(s) | | # ls -l /store | ls: /store: Input/output error | ?--------- 0 root root 0 Jan 1 1970 /store | | Filesystems is ~1T in size | # df -hT /store | Filesystem Type Size Used Avail Use% Mounted on | /dev/sda5 xfs 910G 142G 769G 16% /store | | | Using CentOS 5.9 with kernel 2.6.18-348.el5xen | | | The filesystem is in a virtual machine (Xen) and on top of LVM. | | Filesystem was created using mkfs.xfs defaults with | xfsprogs-2.9.4-1.el5.centos (that's the one that comes with | CentOS 5.x by default.) | | These are the defaults with which the filesystem was created: | # xfs_info /store | meta-data=/dev/sda5 isize=256 agcount=32, | agsize=7454720 blks | = sectsz=512 attr=0 | data = bsize=4096 blocks=238551040, | imaxpct=25 | = sunit=0 swidth=0 blks, | unwritten=1 | naming =version 2 bsize=4096 | log =internal bsize=4096 blocks=32768, version=1 | = sectsz=512 sunit=0 blks, | lazy-count=0 | realtime =none extsz=4096 blocks=0, rtextents=0 | | The problem is reproducible and I don't think it's hardware related. | The problem was reproduced on multiple | servers of the same type. So, I doubt it's a memory issue or | something like that. | | Is that a known issue? If it is then what's the fix? I went through | the kernel updates for CentOS 5.10 (newer | kernel), but didn't see any xfs related fixes since CentOS 5.9 | | Any help will be greatly appreciated... | | | -- | "If we really understand the problem, the answer will come out of it, | because the answer is not separate from the problem." | - Krishnamurti Is this filesystem mounted with the inode64 option? -- James A. Peltier Manager, IT Services - Research Computing Group Simon Fraser University - Burnaby Campus Phone : 778-782-6573 Fax : 778-782-3045 E-Mail : jpeltier at sfu.ca Website : http://www.sfu.ca/itservices To be original seek your inspiration from unexpected sources.