[Bugs] [Bug 1172262] New: glusterfs client crashed while migrating the fds
bugzilla at redhat.com
bugzilla at redhat.com
Tue Dec 9 17:48:59 UTC 2014
https://bugzilla.redhat.com/show_bug.cgi?id=1172262
Bug ID: 1172262
Summary: glusterfs client crashed while migrating the fds
Product: GlusterFS
Version: mainline
Component: snapshot
Assignee: bugs at gluster.org
Reporter: rabhat at redhat.com
CC: bugs at gluster.org, gluster-bugs at redhat.com
Description of problem:
glusterfs client crashed with the below backtrace while migrating the fds from
old graph to the newer graph.
(gdb) bt
#0 0x00007f00bf7a51c6 in dht_fsync (frame=0x7f00c9351250, this=<value
optimized out>, fd=0x366242c, datasync=0,
xdata=0x0) at dht-inode-read.c:818
#1 0x00007f00bf560359 in wb_fsync (frame=0x7f00c93513a8, this=0x31b9a50,
fd=0x366242c, datasync=0, xdata=0x0)
at write-behind.c:1523
#2 0x00007f00bf34fa9a in ra_fsync (frame=0x7f00c93515ac, this=0x31ba4b0,
fd=0x366242c, datasync=0, xdata=0x0)
at read-ahead.c:628
#3 0x0000003c7e0265cb in default_fsync (frame=0x7f00c93515ac, this=0x31bb000,
fd=0x366242c, flags=0,
xdata=<value optimized out>) at defaults.c:1795
#4 0x0000003c7e0265cb in default_fsync (frame=0x7f00c93515ac, this=0x31bbc10,
fd=0x366242c, flags=0,
xdata=<value optimized out>) at defaults.c:1795
#5 0x0000003c7e0265cb in default_fsync (frame=0x7f00c93515ac, this=0x31bc7a0,
fd=0x366242c, flags=0,
xdata=<value optimized out>) at defaults.c:1795
#6 0x00007f00beb21722 in mdc_fsync (frame=0x7f00c9351d10, this=0x31bd3a0,
fd=0x366242c, datasync=0, xdata=0x0)
at md-cache.c:1654
#7 0x0000003c7e0265cb in default_fsync (frame=0x7f00c9351d10, this=0x31becc0,
fd=0x366242c, flags=0,
xdata=<value optimized out>) at defaults.c:1795
#8 0x00007f00be6fd915 in io_stats_fsync (frame=0x7f00c9351908, this=0x31bfa40,
fd=0x366242c, flags=0, xdata=0x0)
at io-stats.c:2194
#9 0x0000003c7e0265cb in default_fsync (frame=0x7f00c9351908, this=0x31c0760,
fd=0x366242c, flags=0,
xdata=<value optimized out>) at defaults.c:1795
#10 0x0000003c7e0684e2 in syncop_fsync (subvol=0x31c0760, fd=0x366242c,
dataonly=0) at syncop.c:1921
#11 0x00007f00c2ac43e5 in fuse_migrate_fd (this=0x12ec8e0, basefd=0x366242c,
old_subvol=0x31c0760, new_subvol=0x368a540)
at fuse-bridge.c:4382
#12 0x00007f00c2ac459c in fuse_handle_opened_fds (this=0x12ec8e0,
old_subvol=0x31c0760, new_subvol=0x368a540)
at fuse-bridge.c:4467
#13 0x00007f00c2ac4649 in fuse_graph_switch_task (data=<value optimized out>)
at fuse-bridge.c:4518
#14 0x0000003c7e05c222 in synctask_wrap (old_task=<value optimized out>) at
syncop.c:333
#15 0x000000304ac438f0 in ?? () from /lib64/libc.so.6
#16 0x0000000000000000 in ?? ()
f 0
#0 0x00007f00bf7a51c6 in dht_fsync (frame=0x7f00c9351250, this=<value
optimized out>, fd=0x366242c, datasync=0,
xdata=0x0) at dht-inode-read.c:818
818 STACK_WIND (frame, dht_fsync_cbk, subvol, subvol->fops->fsync,
(gdb) l
813 local->call_cnt = 1;
814 local->rebalance.flags = datasync;
815
816 subvol = local->cached_subvol;
817
818 STACK_WIND (frame, dht_fsync_cbk, subvol, subvol->fops->fsync,
819 fd, datasync, xdata);
820
821 return 0;
822
(gdb) p local
$1 = <value optimized out>
(gdb) p local->cached_subvol
$1 = (xlator_t *) 0x0
f 6
#6 0x00007f522eaa5dc3 in default_fsync (frame=0x7f521000122c, this=0xfb1280,
fd=0x7f5218001dec, flags=0, xdata=0x0)
at ../../../libglusterfs/src/defaults.c:1795
1795 STACK_WIND_TAIL (frame, FIRST_CHILD(this),
(gdb) p *fd->inode->fd_ctx
There is no member named fd_ctx.
(gdb) p *this
$2 = {name = 0xfb0ac0 "vol-snapview-client", type = 0xfb1da0
"features/snapview-client", next = 0xfaff00,
prev = 0xfb2820, parents = 0xfb3b50, children = 0xfb2760, options = 0xfb1cfc,
dlhandle = 0xfb1ea0,
fops = 0x7f521fdedc00 <fops>, cbks = 0x7f521fdedee0 <cbks>, dumpops = 0x0,
volume_options = {next = 0xfb25f0,
prev = 0xfb25f0}, fini = 0x7f521fbea2aa <svc_forget+228>, init =
0x7f521fbe9f69 <svc_flush+729>,
reconfigure = 0x7f521fbe9e49 <svc_flush+441>, mem_acct_init = 0x7f521fbe9ef2
<svc_flush+610>,
notify = 0x7f521fbea31c <reconfigure+56>, loglevel = GF_LOG_NONE, latencies =
{{min = 0, max = 0, total = 0, std = 0,
mean = 0, count = 0} <repeats 49 times>}, history = 0x0, ctx = 0xf5f010,
graph = 0xf9fad0, itable = 0x0,
init_succeeded = 1 '\001', private = 0xfb9eb0, mem_acct = {num_types = 118,
rec = 0xfb8c10}, winds = 0,
switched = 0 '\000', local_pool = 0xfb9f00, is_autoloaded = _gf_false}
(gdb) p *fd->inode->_ctx
$3 = {{key = 16454272, xl_key = 0xfb1280}, {value1 = 2, ptr1 = 0x2}, {value2 =
0, ptr2 = 0x0}}
(gdb) p *fd->inode->_ctx->xl_key
$4 = {name = 0xfb0ac0 "vol-snapview-client", type = 0xfb1da0
"features/snapview-client", next = 0xfaff00,
prev = 0xfb2820, parents = 0xfb3b50, children = 0xfb2760, options = 0xfb1cfc,
dlhandle = 0xfb1ea0,
fops = 0x7f521fdedc00 <fops>, cbks = 0x7f521fdedee0 <cbks>, dumpops = 0x0,
volume_options = {next = 0xfb25f0,
prev = 0xfb25f0}, fini = 0x7f521fbea2aa <svc_forget+228>, init =
0x7f521fbe9f69 <svc_flush+729>,
reconfigure = 0x7f521fbe9e49 <svc_flush+441>, mem_acct_init = 0x7f521fbe9ef2
<svc_flush+610>,
notify = 0x7f521fbea31c <reconfigure+56>, loglevel = GF_LOG_NONE, latencies =
{{min = 0, max = 0, total = 0, std = 0,
mean = 0, count = 0} <repeats 49 times>}, history = 0x0, ctx = 0xf5f010,
graph = 0xf9fad0, itable = 0x0,
init_succeeded = 1 '\001', private = 0xfb9eb0, mem_acct = {num_types = 118,
rec = 0xfb8c10}, winds = 0,
switched = 0 '\000', local_pool = 0xfb9f00, is_autoloaded = _gf_false}
p *fd->inode->_ctx
$5 = {{key = 16454272, xl_key = 0xfb1280}, {value1 = 2, ptr1 = 0x2}, {value2 =
0, ptr2 = 0x0}}
Version-Release number of selected component (if applicable):
How reproducible:
keep doing ls in .snaps directory when USS is enabled and do graph changes (all
it has to do is a fd has to be opened and then graph switch has to happen)
Steps to Reproduce:
1.
2.
3.
Actual results:
Expected results:
Additional info:
snapview-client does not implement fsync fop.
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