Re: Cephfs and ERESTARTSYS on writes

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On 07/23/2015 04:45 PM, Ilya Dryomov wrote:
> 
> Can you provide the full strace output?

This is pretty much the all the relevant part:

4118  open("/home/ceph/temp/45/45/5/0000154545", O_RDWR|O_CREAT|O_EXCL,
0600) = 377
4118  writev(377, [{"\3\0\0\0\0"..., 4096}, {"\247\0\0\3\23"..., 4096},
{"\225\0\0\4\334"..., 4096}, {"\204\0\0\t\n"..., 4096},
{"9\0\0\v\322"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"\334\1\210C\315"..., 4096}, {"X\1\266\343\320"...,
4096}, {"\304\1\345k\226"..., 4096}, {"}\2\17\27\371"..., 4096},
{"\203\2:\0e"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"\334\1\210C\315"..., 4096}, {"X\1\266\343\320"...,
4096}, {"\304\1\345k\226"..., 4096}, {"}\2\17\27\371"..., 4096},
{"\203\2:\0e"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"\206\0\0\1c"..., 4096}, {"\336\0\0\1\351"...,
4096}, {"\265\0\0\0\313"..., 4096}, {"K\0\0\1A"..., 4096},
{"\217\0\0\1l"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"\206\0\0\1c"..., 4096}, {"\336\0\0\1\351"...,
4096}, {"\265\0\0\0\313"..., 4096}, {"K\0\0\1A"..., 4096},
{"\217\0\0\1l"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"\2\0\366\371\273"..., 4096}, {"\256\1\22\3015"...,
4096}, {"\252\1-\361\225"..., 4096}, {"{\1I\335\4"..., 4096},
{"V\1`{\303"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"\2\0\366\371\273"..., 4096}, {"\256\1\22\3015"...,
4096}, {"\252\1-\361\225"..., 4096}, {"{\1I\335\4"..., 4096},
{"V\1`{\303"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"O\\U\377\210"..., 4096}, {"\354 Gww"..., 4096},
{"\356\357|\317\250"..., 4096}, {"\272J\231\222E"..., 4096},
{"w\35W\213\277"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"O\\U\377\210"..., 4096}, {"\354 Gww"..., 4096},
{"\356\357|\317\250"..., 4096}, {"\272J\231\222E"..., 4096},
{"w\35W\213\277"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"O\30\256|\350"..., 4096}, {"\316f\21>|"..., 4096},
{"\346\330\354YU"..., 4096}, {"\257{R\5\16"..., 4096}, {"_C\n\21w"...,
4096}, ...], 33) = 135168
4118  writev(377, [{"O\30\256|\350"..., 4096}, {"\316f\21>|"..., 4096},
{"\346\330\354YU"..., 4096}, {"\257{R\5\16"..., 4096}, {"_C\n\21w"...,
4096}, ...], 33) = 135168
4118  readv(1206, [{"\233p\217\356["..., 4096}, {"m\264\323F\7"...,
4096}, {"q\5\362/\21"..., 4096}, {"\262\353z(\251"..., 4096},
{"of\365\245U"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"\233p\217\356["..., 4096}, {"m\264\323F\7"...,
4096}, {"q\5\362/\21"..., 4096}, {"\262\353z(\251"..., 4096},
{"of\365\245U"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"\257\3335X\300"..., 4096}, {"\207\37BW\252"...,
4096}, {"<U\331a)"..., 4096}, {"\323\33i\256`"..., 4096},
{"\271m\356\"]"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"\257\3335X\300"..., 4096}, {"\207\37BW\252"...,
4096}, {"<U\331a)"..., 4096}, {"\323\33i\256`"..., 4096},
{"\271m\356\"]"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"b\\\337Y\240"..., 4096}, {"\233\r\326o\372"...,
4096}, {"\346(.\32\252"..., 4096}, {"\252FpJW"..., 4096},
{"\3648\237\220\352"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"b\\\337Y\240"..., 4096}, {"\233\r\326o\372"...,
4096}, {"\346(.\32\252"..., 4096}, {"\252FpJW"..., 4096},
{"\3648\237\220\352"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"\376\375\257'\310"..., 4096}, {"\352\256R\342>"...,
4096}, {"\361\340\342Rq"..., 4096}, {"|7 \3017"..., 4096},
{"\224\256\356\353\312"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"\376\375\257'\310"..., 4096}, {"\352\256R\342>"...,
4096}, {"\361\340\342Rq"..., 4096}, {"|7 \3017"..., 4096},
{"\224\256\356\353\312"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"}y\"\vJ"..., 4096}, {"0$\v\6\2"..., 4096},
{"\2135\357zy"..., 4096}, {"{\343N\352\215"..., 4096},
{"\347\321x\352\272"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"}y\"\vJ"..., 4096}, {"0$\v\6\2"..., 4096},
{"\2135\357zy"..., 4096}, {"{\343N\352\215"..., 4096},
{"\347\321x\352\272"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"\v\6\2\301\200"..., 4096}, {"C\276\232\207\210"...,
4096}, {"\21\0006\262\255"..., 4096}, {"\224\222\n\276{"..., 4096},
{"Ys\337w\357"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"\v\6\2\301\200"..., 4096}, {"C\276\232\207\210"...,
4096}, {"\21\0006\262\255"..., 4096}, {"\224\222\n\276{"..., 4096},
{"Ys\337w\357"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"6Y\236W\345"..., 4096}, {"Q\207uu\252"..., 4096},
{"\32\346]\313i"..., 4096}, {"n\356\\-\336"..., 4096}, {"{y~]\247"...,
4096}, ...], 33) = 135168
4118  writev(377, [{"6Y\236W\345"..., 4096}, {"Q\207uu\252"..., 4096},
{"\32\346]\313i"..., 4096}, {"n\356\\-\336"..., 4096}, {"{y~]\247"...,
4096}, ...], 33) = 135168
4118  readv(1206, [{"H0\337\275\302"..., 4096}, {"g\177\225\316\333"...,
4096}, {"\364\212\374X\360"..., 4096}, {"\337\260\226XL"..., 4096},
{"Y\356\360\301r"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"H0\337\275\302"..., 4096}, {"g\177\225\316\333"...,
4096}, {"\364\212\374X\360"..., 4096}, {"\337\260\226XL"..., 4096},
{"Y\356\360\301r"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"_'\255\374v"..., 4096}, {"\271\231/II"..., 4096},
{"\277]\274\200\253"..., 4096}, {"'\3Qe\244"..., 4096},
{"\341\361\210h\363"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"_'\255\374v"..., 4096}, {"\271\231/II"..., 4096},
{"\277]\274\200\253"..., 4096}, {"'\3Qe\244"..., 4096},
{"\341\361\210h\363"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"G\265l\236\204"..., 4096}, {"_=\301\r\357"...,
4096}, {"y?[\177\4"..., 4096}, {"Wm\376\371\7"..., 4096},
{"\244\256RT\326"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"G\265l\236\204"..., 4096}, {"_=\301\r\357"...,
4096}, {"y?[\177\4"..., 4096}, {"Wm\376\371\7"..., 4096},
{"\244\256RT\326"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"\373+\t\3>"..., 4096}, {"\276\373\277r\317"...,
4096}, {"i\201\24@N"..., 4096}, {"ky\226;\25"..., 4096},
{"\353\353\3440\232"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"\373+\t\3>"..., 4096}, {"\276\373\277r\317"...,
4096}, {"i\201\24@N"..., 4096}, {"ky\226;\25"..., 4096},
{"\353\353\3440\232"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"G\273\3044\334"..., 4096}, {"M\36\314\25|"...,
4096}, {"V\336\270\236="..., 4096}, {"\336\347\272\352\326"..., 4096},
{"\372\37\231\267\370"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"G\273\3044\334"..., 4096}, {"M\36\314\25|"...,
4096}, {"V\336\270\236="..., 4096}, {"\336\347\272\352\326"..., 4096},
{"\372\37\231\267\370"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"\240H5\313\337"..., 4096},
{"\177\273\275\347\367"..., 4096}, {"\22\235*\313\346"..., 4096},
{"\212\237('\276"..., 4096}, {"\3102B\35\263"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"\240H5\313\337"..., 4096},
{"\177\273\275\347\367"..., 4096}, {"\22\235*\313\346"..., 4096},
{"\212\237('\276"..., 4096}, {"\3102B\35\263"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"\252\262\373\0048"..., 4096},
{"\264\v\322>\251"..., 4096}, {"5\254\303\315\22"..., 4096},
{"\213H<V\376"..., 4096}, {"\372+xd!"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"\252\262\373\0048"..., 4096},
{"\264\v\322>\251"..., 4096}, {"5\254\303\315\22"..., 4096},
{"\213H<V\376"..., 4096}, {"\372+xd!"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"\36\300\325\376("..., 4096}, {"|\3452\357/"...,
4096}, {".\3525\337w"..., 4096}, {"d\t\335\375?"..., 4096},
{"#\22\213\22\230"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"\36\300\325\376("..., 4096}, {"|\3452\357/"...,
4096}, {".\3525\337w"..., 4096}, {"d\t\335\375?"..., 4096},
{"#\22\213\22\230"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"W\243u\326\307"..., 4096}, {"\20v3\364\177"...,
4096}, {"\276\276\277\23Y"..., 4096}, {"a\345:^e"..., 4096},
{"\373\336,\22\355"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"W\243u\326\307"..., 4096}, {"\20v3\364\177"...,
4096}, {"\276\276\277\23Y"..., 4096}, {"a\345:^e"..., 4096},
{"\373\336,\22\355"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"\376$\327\273\326"..., 4096}, {"UZ\247\342&"...,
4096}, {"\246\324+\327\333"..., 4096}, {"\376UG \260"..., 4096},
{"0X\0\230\0"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"\376$\327\273\326"..., 4096}, {"UZ\247\342&"...,
4096}, {"\246\324+\327\333"..., 4096}, {"\376UG \260"..., 4096},
{"0X\0\230\0"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"\346&\356L\205"..., 4096}, {"j\341-\312\4"...,
4096}, {"$\326\23\356\22"..., 4096}, {"mNI\340\16"..., 4096},
{"\340\224\316\355\367"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"\346&\356L\205"..., 4096}, {"j\341-\312\4"...,
4096}, {"$\326\23\356\22"..., 4096}, {"mNI\340\16"..., 4096},
{"\340\224\316\355\367"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"\257\326\376\347\370"..., 4096},
{"\361\272\236\3357"..., 4096}, {"\222\307\274\203\372"..., 4096},
{"g\371\205\252\257"..., 4096}, {"\351\277G~\201"..., 4096}, ...], 33) =
135168
4118  writev(377, [{"\257\326\376\347\370"..., 4096},
{"\361\272\236\3357"..., 4096}, {"\222\307\274\203\372"..., 4096},
{"g\371\205\252\257"..., 4096}, {"\351\277G~\201"..., 4096}, ...], 33) =
135168
4118  readv(1206, [{"\242\373\375\2\35"..., 4096}, {"\311\357|\337k"...,
4096}, {"\203hhx@"..., 4096}, {"\237\32\251\331x"..., 4096},
{"~\355\325j\371"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"\242\373\375\2\35"..., 4096}, {"\311\357|\337k"...,
4096}, {"\203hhx@"..., 4096}, {"\237\32\251\331x"..., 4096},
{"~\355\325j\371"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"\342\375\362\24\325"..., 4096},
{"\370\3603\0276"..., 4096}, {"\243*\316\310G"..., 4096},
{"+\203\250%\24"..., 4096}, {"7G\312\210\355"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"\342\375\362\24\325"..., 4096},
{"\370\3603\0276"..., 4096}, {"\243*\316\310G"..., 4096},
{"+\203\250%\24"..., 4096}, {"7G\312\210\355"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"k\236\375\n\222"..., 4096},
{"\222\325^\236\213"..., 4096}, {"\356\356\357|\223"..., 4096},
{"\233\362\5\v\274"..., 4096}, {"\313\362\370\207["..., 4096}, ...], 33)
= 135168
4118  writev(377, [{"k\236\375\n\222"..., 4096},
{"\222\325^\236\213"..., 4096}, {"\356\356\357|\223"..., 4096},
{"\233\362\5\v\274"..., 4096}, {"\313\362\370\207["..., 4096}, ...], 33)
= 135168
4118  readv(1206, [{"UE\325UW"..., 4096}, {"\"C\316^\321"..., 4096},
{"\377\275\4e-"..., 4096}, {"$X6\4\243"..., 4096}, {"j\364%\30W"...,
4096}, ...], 33) = 135168
4118  writev(377, [{"UE\325UW"..., 4096}, {"\"C\316^\321"..., 4096},
{"\377\275\4e-"..., 4096}, {"$X6\4\243"..., 4096}, {"j\364%\30W"...,
4096}, ...], 33) = 135168
4118  readv(1206, [{"\224(\206\230O"..., 4096}, {"\7\377\20,\347"...,
4096}, {"\4\214\250*u"..., 4096}, {" =\345\336|"..., 4096},
{"\230\221p\277\10"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"\224(\206\230O"..., 4096}, {"\7\377\20,\347"...,
4096}, {"\4\214\250*u"..., 4096}, {" =\345\336|"..., 4096},
{"\230\221p\277\10"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"\260\230\247ww"..., 4096}, {";\217\253_\16"...,
4096}, {"HRb\372\212"..., 4096}, {"j\17c!\266"..., 4096}, {"u\352
\256\352"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"\260\230\247ww"..., 4096}, {";\217\253_\16"...,
4096}, {"HRb\372\212"..., 4096}, {"j\17c!\266"..., 4096}, {"u\352
\256\352"..., 4096}, ...], 33) = 135168
4118  readv(1206, [{"\5\356\307l\361"..., 4096}, {"\337\261\17<\257"...,
4096}, {"\211&;s\310"..., 4096}, {"\370N\372:\252"..., 4096},
{"\202\311/\347\260"..., 4096}, ...], 33) = 135168
4118  writev(377, [{"\5\356\307l\361"..., 4096}, {"\337\261\17<\257"...,
4096}, {"\211&;s\310"..., 4096}, {"\370N\372:\252"..., 4096},
{"\202\311/\347\260"..., 4096}, ...], 33) = ? ERESTARTSYS (To be restarted)
4118  --- SIGALRM (Alarm clock) @ 0 (0) ---
4118  rt_sigreturn(0xe)                 = -1 EINTR (Interrupted system call)
4118  gettid()                          = 4118
4118  write(4, "2015/"..., 520)         = 520
4118  close(1206)                       = 0
4118  unlink("/home/ceph/temp/45/45/5/0000154545") = 0


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