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Hello I’m using GlusterFS-2.0.8 and I turn on readahead.
I got a Segfault when I try to read a directory. At the following trace, fd_ctx->dcache seems
to be NULL volume readahead type performance/read-ahead option page-count
4 # 2 is default
option option force-atime-update off #
default is off subvolumes distribute end-volume Program received signal SIGSEGV,
Segmentation fault. 0x00002aaab4b03606 in libgf_dcache_readdir
(ctx=<value optimized out>, fd=<value optimized
out>, dirp=0x2aaab31cd7f8, offset=0x4f9d2248) at
libglusterfsclient.c:398 398
*offset = fd_ctx->dcache->next->d_off; (gdb) bt #0 0x00002aaab4b03606 in
libgf_dcache_readdir (ctx=<value optimized out>, fd=<value optimized
out>, dirp=0x2aaab31cd7f8, offset=0x4f9d2248) at
libglusterfsclient.c:398 #1 0x00002aaab4b100d9 in
libgf_client_readdir (ctx=0x2aaab31cd80b, fd=0x2aaab48e0928,
dirp=0x0, offset=0x0) at libglusterfsclient.c:4151 #2 0x00002aaab4b1047f in
glusterfs_readdir (dirfd=0x2aaab319b310) at
libglusterfsclient.c:4253 #3 0x00002aaab48e7e38 in
gluster_readdir (self=<value optimized out>, args=0x2aaab4824840) at
glusterfs.c:1035 (gdb) p
fd_ctx->dcache->next->d_off Cannot access memory at address 0xb8 (gdb) p fd_ctx $1 = (libglusterfs_client_fd_ctx_t *)
0x2aaab31cd7c0 (gdb) p fd_ctx->dcache $2 = (struct direntcache *) 0x0 DongMin Yu HOSTWAY IDC Corp.
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