[Box Backup] Box Deadlock Issue during Sync

[Matt Brown]

Hi Chris,

It would appear the deadlock issue has returned .... :(

Anything you can suggest ?

On the client using strace gives the following:

lstat64("/etc/box", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
llistxattr("/etc/box", 0x81eef88, 1000) = 0
lstat64("/etc/box/bbackupd.conf", {st_mode=S_IFREG|0644,  
st_size=5609, ...}) = 0
llistxattr("/etc/box/bbackupd.conf", 0x81eef88, 1000) = 0
time([1214383394])                      = 1214383394
stat64("/etc/localtime", {st_mode=S_IFREG|0644, st_size=1323, ...}) = 0
stat64("/etc/localtime", {st_mode=S_IFREG|0644, st_size=1323, ...}) = 0
stat64("/etc/localtime", {st_mode=S_IFREG|0644, st_size=1323, ...}) = 0
send(3, "<182>Jun 25 09:43:14 bbackupd[12"..., 85, MSG_NOSIGNAL) = 85
lstat64("/etc/box/bbackupd.conf", {st_mode=S_IFREG|0644,  
st_size=5609, ...}) = 0
llistxattr("/etc/box/bbackupd.conf", 0x81efb50, 1000) = 0
open("/etc/box/bbackupd.conf", O_RDONLY|O_LARGEFILE) = 6
fstat64(6, {st_mode=S_IFREG|0644, st_size=5609, ...}) = 0
_llseek(6, 0, [0], SEEK_CUR)            = 0
gettimeofday({1214383394, 928735}, NULL) = 0
write(5, "\27\3\1\0 8\211\247\247l\7\315`\211_\207\220\357P 
\271\207"..., 122) = 122
write(5, "\27\3\1\0 ?/\1\376e\16\267j\25\264-t\214K 
\235\337\247\251"..., 74) = 74
brk(0x8221000)                          = 0x8221000
read(6, "\nStoreHostname = pegasus.3aitsup"..., 4096) = 4096
gettimeofday({1214383394, 929203}, NULL) = 0
brk(0x8251000)                          = 0x8251000
brk(0x8241000)                          = 0x8241000
brk(0x8231000)                          = 0x8231000
brk(0x8221000)                          = 0x8221000
read(6, "3 file in particular.\n# \n# In ge"..., 1513) = 1513
gettimeofday({1214383394, 930094}, NULL) = 0
brk(0x8251000)                          = 0x8251000
brk(0x8241000)                          = 0x8241000
brk(0x8231000)                          = 0x8231000
brk(0x8221000)                          = 0x8221000
write(5, "\27\3\1\0 Mh\367\346\3569\243\321\304\347\230g\232\267"...,  
2762) = 2762
write(5, "\27\3\1\0 \251\233\351\262\371\217\304\33\36\25\257\f 
\211"..., 154) = 154
write(5, "\27\3\1\0 \372\315d\215\2667\205E\347R\362\371\363\324"...,  
74) = 74
write(5, "\27\3\1\0 \342\7\200\227O\371\370\331& 
\23\246\365\371\241"..., 74) = 74
brk(0x8211000)                          = 0x8211000
read(5, 0x8139d38, 5)                   = -1 EAGAIN (Resource  
temporarily unavailable)
gettimeofday({1214383394, 931450}, NULL) = 0
gettimeofday({1214383394, 931512}, NULL) = 0
poll([{fd=5, events=POLLIN}], 1, 900000) = -1 EINTR (Interrupted  
system call)
--- SIGALRM (Alarm clock) @ 0 (0) ---
sigreturn()                             = ? (mask now [])
gettimeofday({1214383407, 153771}, NULL) = 0
poll(

On the server we see:

Jun 25 09:43:14 ingfieldfs bbackupd[12452]: Uploading complete file: / 
etc/box/bbackupd.conf

The backup fails to continue - the sync stops and hangs until it is  
closed forcibly.

Regards

Matt