LU-12461 contrib: Add epython scripts for crash dump analysis

[fs/lustre-release.git] / contrib / debug_tools / epython_scripts / sbi_ptrs.py

diff --git a/contrib/debug_tools/epython_scripts/sbi_ptrs.py b/contrib/debug_tools/epython_scripts/sbi_ptrs.py
new file mode 100644 (file)
index 0000000..7872039
--- /dev/null
+++ b/contrib/debug_tools/epython_scripts/sbi_ptrs.py
@@ -0,0 +1,37 @@
+#!/usr/bin/env python
+"""
+Copyright (c) 2019 Cray Inc. All Rights Reserved.
+Utility to display Lustre inode related struct pointers
+"""
+
+from pykdump.API import *
+import argparse
+from crashlib.input import toint
+
+description_short = "Prints Lustre structs associated with inode."
+
+def dump_inode(inode):
+     offset = member_offset('struct ll_inode_info', 'lli_vfs_inode')
+     lli = readSU('struct ll_inode_info', Addr(inode) - offset)
+     sb = readSU('struct super_block', inode.i_sb)
+     lsi = readSU('struct lustre_sb_info', sb.s_fs_info)
+     llsbi = readSU('struct ll_sb_info', lsi.lsi_llsbi)
+     print "%x %x %x %x %x" % (Addr(inode), lli, sb, lsi, llsbi)
+
+def dump_inode_list(inodes):
+    print "%-16s %-16s %-16s %-16s %-16s" % ("inode", "ll_inode_info",
+          "super_block", "lustre_sb_info", "ll_sb_info")
+    for addr in inodes:
+        dump_inode(readSU('struct inode', addr))
+
+if __name__ == "__main__":
+    description = "Prints ll_inode_info, super_block, \n" + \
+            "lustre_sb_info, and ll_sb_info pointers associated \n" + \
+           "with specified inode(s) \n"
+
+    parser = argparse.ArgumentParser(description=description)
+    parser.add_argument('inode', nargs="+", type=toint,
+        help="list of one or more inodes")
+    args = parser.parse_args()
+
+    dump_inode_list(args.inode)