[Digikam-devel] [Bug 308734] digikam/kioslave: since switching to fat32, a lot of "KIO::Slave::timeout: Houston, we lost our slave" and "slave died"

[julien.t43+kde at gmail.com]

https://bugs.kde.org/show_bug.cgi?id=308734

--- Comment #10 from julien.t43+kde at gmail.com ---
after a few more (slow) retry, I can say than doing a x session logout + login
again allows to start again normally. a switch user/login again doesn't.

I give a strace to a 2nd session
(strace -ff -rTx -o $s digikam)
$ ll -h digikam.20121104-strace.*
-rw------- 1 julien julien  34M nov.   4 22:18 digikam.20121104-strace.11975
-rw------- 1 julien julien 140M nov.   4 22:18 digikam.20121104-strace.11980
-rw------- 1 julien julien 1022 nov.   4 20:58 digikam.20121104-strace.11981
-rw------- 1 julien julien 2,3K nov.   4 20:58 digikam.20121104-strace.11982
-rw------- 1 julien julien 8,3K nov.   4 22:18 digikam.20121104-strace.16150
-rw------- 1 julien julien 6,8K nov.   4 22:00 digikam.20121104-strace.16156
-rw------- 1 julien julien 6,7K nov.   4 22:00 digikam.20121104-strace.16157
-rw------- 1 julien julien  19K nov.   4 22:12 digikam.20121104-strace.16833
$ egrep '(EAGAIN|ETIMEDOUT)' digikam.20121104-strace.16*
digikam.20121104-strace.16150:     0.001071 futex(0x96ab050,
FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
<0.000518>
digikam.20121104-strace.16150:     0.011403 futex(0x96ab050,
FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
<0.000340>
digikam.20121104-strace.16150:     0.005793 futex(0x96ab050,
FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
<0.000341>
digikam.20121104-strace.16150:     0.036802 futex(0x96ab050,
FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
<0.000265>
digikam.20121104-strace.16150:     0.055542 futex(0x96ab050,
FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
<0.000257>
digikam.20121104-strace.16150:     0.001109 futex(0x96ab050,
FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable)
<0.000033>
digikam.20121104-strace.16833:     0.000839 futex(0x9998014,
FUTEX_WAIT_PRIVATE, 3, {29, 999382342}) = -1 ETIMEDOUT (Connection timed out)
<29.999518>
$ tail -5 digikam.20121104-strace.11975 
     0.000742 recv(10, 0x933c3f8, 4096, 0) = -1 EAGAIN (Resource temporarily
unavailable) <0.000053>
     0.001022 clock_gettime(CLOCK_MONOTONIC, {44009, 1002251}) = 0 <0.000040>
     0.000784 recv(10, 0x933c3f8, 4096, 0) = -1 EAGAIN (Resource temporarily
unavailable) <0.000058>
     0.000834 recv(12, 0x938d5f8, 4096, 0) = -1 EAGAIN (Resource temporarily
unavailable) <0.000060>
     0.000746 poll([{fd=7, events=POLLIN}, {fd=11, events=POLLIN}, {fd=12,
events=POLLIN}, {fd=10, events=POLLIN}, {fd=13, events=POLLIN}, {fd=15,
events=POLLIN}, {fd=18, events=POLLIN}, {fd=21, events=POLLIN}, {fd=28,
events=POLLIN}, {fd=25, events=POLLIN}], 10, 181448

not sure if it is the real problem or not.

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