https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 https://jira.whamcloud.com/browse/LU-16208 Lustre <p>Mounting mdt as ldiskfs and running a file level backup we got the following error. What is this error?</p> <p>The tar command was</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java"> tar czf /backups/mdt.tgz --xattrs --xattrs-include=trusted.* --sparse .</pre> </div></div> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java"> nbpxx-srv7: tar: ./REMOTE_PARENT_DIR/0x340005a45\:0x1e4\:0x0/XXX/PATH_HIDDED/file1: Cannot seek to 5486809098596: Invalid argument nbpxx-srv7: tar: ./REMOTE_PARENT_DIR/0x340005a45\:0x1e4\:0x0/XXX/PATH_HIDDED/file2: Cannot seek to 5184429353460: Invalid argument nbpxx-srv7: tar: ./REMOTE_PARENT_DIR/0x340005a45\:0x1e4\:0x0/XXX/PATH_HIDDED/file3: Cannot seek to 14633117681632: Invalid argument nbpxx-srv7: tar: ./REMOTE_PARENT_DIR/0x340005a45\:0x1e4\:0x0/XXX/PATH_HIDDED/file4: Cannot seek to 5184429171768: Invalid argument nbpxx-srv7: tar: Exiting with failure status due to previous errors </pre> </div></div> LU-16208

ldiskfs mdt backup seek error

Question/Request Minor Open Unresolved Peter Jones Mahmoud Hanafi Tue, 4 Oct 2022 21:58:20 +0000 Thu, 6 Oct 2022 08:45:47 +0000 0 5 <p>Mahmoud, what version of Lustre is this?  MDS files shouldn't have data in them, so it isn't clear what tar is doing here.</p> <p>Also, have you run e2fsck on this MDT?  It may be that the filesystem has some corrupted inodes.</p> <p>There shouldn't be any data. This 2.12.8. </p> <p>Here is the inode info</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java"> debugfs:  stat TTBW/simulations/FAC-4c-F0-LG-6deg/fwh_sld.snc Inode: 114840990   Type: regular    Mode:  0770   Flags: 0x0 Generation: 1596952107    Version: 0x0000002b:00a38e8b User: 846235202   Group: 21603   Project:     0   Size: 5486809098596 File ACL: 0 Links: 1   Blockcount: 0 Fragment:  Address: 0    <span class="code-object">Number</span>: 0    Size: 0  ctime: 0x633b097c:00000000 -- Mon Oct  3 09:10:36 2022  atime: 0x632e67ef:00000000 -- Fri Sep 23 19:14:07 2022  mtime: 0x631e6c19:00000000 -- Sun Sep 11 16:15:37 2022 crtime: 0x62f5a4ff:0f4ed044 -- Thu Aug 11 17:55:27 2022 Size of extra inode fields: 32 Extended attributes:   lma: fid=[0x340029b94:0xb:0x0] compat=0 incompat=0   linkea: idx=0 parent=[0x340028c72:0xad9:0x0] name=<span class="code-quote">'fwh_sld.snc'</span>   trusted.som (24) = 04 00 00 00 00 00 00 00 64 a9 4e 7f fd 04 00 00 b0 9d 7f fd 04 00 00 00   trusted.lov (512) BLOCKS:debugfs:  stat TTBW/simulations/FAC-3c-F0-nLG-6deg/fwh_sld.snc Inode: 114848112   Type: regular    Mode:  0660   Flags: 0x0 Generation: 1594491852    Version: 0x00000024:085c82ce User: 846235202   Group: 21603   Project:     0   Size: 5184429353460 File ACL: 0 Links: 1   Blockcount: 0 Fragment:  Address: 0    <span class="code-object">Number</span>: 0    Size: 0  ctime: 0x62df3c06:00000000 -- Mon Jul 25 17:57:42 2022  atime: 0x630988eb:00000000 -- Fri Aug 26 20:00:59 2022  mtime: 0x62df3c06:00000000 -- Mon Jul 25 17:57:42 2022 crtime: 0x62db8ece:a9577c50 -- Fri Jul 22 23:01:50 2022 Size of extra inode fields: 32 Extended attributes:   lma: fid=[0x34002803d:0xb:0x0] compat=0 incompat=0   linkea: idx=0 parent=[0x340025ea6:0x1d1e5:0x0] name=<span class="code-quote">'fwh_sld.snc'</span>   trusted.som (24) = 04 00 00 00 00 00 00 00 f4 e9 11 18 b7 04 00 00 10 66 18 b7 04 00 00 00   trusted.lov (512) BLOCKS:debugfs:  stat TTBW/simulations/FAC-2c-F0-LG-6deg/fwh_sld.snc Inode: 114832177   Type: regular    Mode:  0770   Flags: 0x0 Generation: 1592577854    Version: 0x00000024:0dea2979 User: 846235202   Group: 21603   Project:     0   Size: 14633117681632 File ACL: 0 Links: 1   Blockcount: 0 Fragment:  Address: 0    <span class="code-object">Number</span>: 0    Size: 0  ctime: 0x62f3c2c3:00000000 -- Wed Aug 10 07:37:55 2022  atime: 0x630c4755:00000000 -- Sun Aug 28 21:57:57 2022  mtime: 0x62b4d5d4:00000000 -- Thu Jun 23 14:06:28 2022 crtime: 0x62b07042:5f33351c -- Mon Jun 20 06:04:02 2022 Size of extra inode fields: 32 Extended attributes:   lma: fid=[0x340024e77:0xb:0x0] compat=0 incompat=0   linkea: idx=0 parent=[0x340024b91:0x6b0:0x0] name=<span class="code-quote">'fwh_sld.snc'</span>   trusted.som (24) = 04 00 00 00 00 00 00 00 e0 07 c8 09 4f 0d 00 00 00 64 0a 4f 0d 00 00 00   trusted.lov (512) BLOCKS:debugfs:  stat TTBW/simulations/FAC-2c-F0-nLG-6deg/fwh_sld.snc Inode: 114838297   Type: regular    Mode:  0770   Flags: 0x0 Generation: 1593962529    Version: 0x00000024:07f81409 User: 846235202   Group: 21603   Project:     0   Size: 5184429171768 File ACL: 0 Links: 1   Blockcount: 0 Fragment:  Address: 0    <span class="code-object">Number</span>: 0    Size: 0  ctime: 0x62d7119c:00000000 -- Tue Jul 19 13:18:36 2022  atime: 0x63052766:00000000 -- Tue Aug 23 12:15:50 2022  mtime: 0x62d25f1c:00000000 -- Fri Jul 15 23:47:56 2022 crtime: 0x62d05b8b:1325e688 -- Thu Jul 14 11:08:11 2022 Size of extra inode fields: 32 Extended attributes:   lma: fid=[0x340026d45:0x8:0x0] compat=0 incompat=0   linkea: idx=0 parent=[0x340025ea6:0x1d0cb:0x0] name=<span class="code-quote">'fwh_sld.snc'</span>   trusted.som (24) = 04 00 00 00 00 00 00 00 38 24 0f 18 b7 04 00 00 50 4f 18 b7 04 00 00 00   trusted.lov (512) BLOCKS:debugfs: </pre> </div></div> <p>Was this filesystem upgraded from a much older release? The size of files used to be stored in the MDS inode.i_size, but this caused problems for "tar" and similar, so we stopped doing it. However, the file creation time seems very recent so I'm not sure why that is the case. Do these sizes match the actual file size when viewed in the mounted Lustre filesystem?</p> <p>Since the reported files have zero blocks allocated, it looks like they could be truncated to zero bytes to avoid having tar complain about them. The file size in the MDT is not used for anything today except for DoM files. </p> Development Rank 1|i03213: Rank (Obsolete) 9223372036854775807