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When I invoke lvm commands, I get warnings like that :
File descriptor 47 (/usr/share/qt/resources/qtwebengine_resources.pak) leaked on lvs invocation. Parent PID 15827: -bash
File descriptor 48 (/usr/share/qt/resources/qtwebengine_resources_100p.pak) leaked on lvs invocation. Parent PID 15827: -bash
File descriptor 49 (/usr/share/qt/resources/qtwebengine_resources_200p.pak) leaked on lvs invocation. Parent PID 15827: -bash
...
lvm reports that it was executed from environment which left more opened descriptors than stdin/out/err - this may present security problem - that's why lvm tool report this issue. So effectively it means the problem is in the executing shell which leaves descriptors opened while calling lvm.
In my kde session when konsole forks bash it leaves all these fd open (see FD > 2) :
$ lsof -p $$
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
bash 15827 titi cwd DIR 254,0 16384 7077889 /home/titi
bash 15827 titi rtd DIR 254,1 4096 2 /
bash 15827 titi txt REG 254,1 903440 1991503 /usr/bin/bash
bash 15827 titi mem REG 254,1 51376 1816195 /usr/lib/libnss_files-2.29.so
bash 15827 titi mem REG 254,1 3676528 2064491 /usr/lib/locale/locale-archive
bash 15827 titi mem REG 254,1 449040 1814439 /usr/lib/libncursesw.so.6.1
bash 15827 titi mem REG 254,1 2133648 1812789 /usr/lib/libc-2.29.so
bash 15827 titi mem REG 254,1 14512 1813264 /usr/lib/libdl-2.29.so
bash 15827 titi mem REG 254,1 326392 1816214 /usr/lib/libreadline.so.8.0
bash 15827 titi mem REG 254,1 198088 1812376 /usr/lib/ld-2.29.so
bash 15827 titi 0u CHR 136,1 0t0 4 /dev/pts/1
bash 15827 titi 1u CHR 136,1 0t0 4 /dev/pts/1
bash 15827 titi 2u CHR 136,1 0t0 4 /dev/pts/1
bash 15827 titi 47r REG 254,1 4491104 879898 /usr/share/qt/resources/qtwebengine_resources.pak
bash 15827 titi 48r REG 254,1 715593 879899 /usr/share/qt/resources/qtwebengine_resources_100p.pak
bash 15827 titi 49r REG 254,1 823947 879900 /usr/share/qt/resources/qtwebengine_resources_200p.pak
bash 15827 titi 50r REG 254,1 8497106 878818 /usr/share/qt/resources/qtwebengine_devtools_resources.pak
bash 15827 titi 51r REG 254,1 181903 879912 /usr/share/qt/translations/qtwebengine_locales/en-US.pak
bash 15827 titi 52u unix 0x0000000000adef54 0t0 45501 type=SEQPACKET
bash 15827 titi 53u unix 0x00000000fb880c96 0t0 45502 type=SEQPACKET
bash 15827 titi 54r FIFO 0,12 0t0 45503 pipe
bash 15827 titi 55w FIFO 0,12 0t0 45503 pipe
bash 15827 titi 56u unix 0x000000006ec2fdf1 0t0 45504 @00004 type=SEQPACKET
bash 15827 titi 62u netlink 0t0 45572 ROUTE
bash 15827 titi 63r a_inode 0,13 0 11006 inotify
bash 15827 titi 76r a_inode 0,13 0 11006 inotify
bash 15827 titi 84w REG 254,0 179 7798786 /home/titi/.local/share/plasmashell/QtWebEngine/Default/Local Storage/leveldb/LOG
bash 15827 titi 85r REG 0,24 131060 46968 /dev/shm/.org.chromium.Chromium.JLEKHz (deleted)
bash 15827 titi 87u unix 0x000000005a4882e0 0t0 54549 type=STREAM
bash 15827 titi 88r REG 0,24 131060 46968 /dev/shm/.org.chromium.Chromium.JLEKHz (deleted)
bash 15827 titi 89u unix 0x00000000f756b671 0t0 50764 type=STREAM
bash 15827 titi 98u REG 254,0 0 7809027 /home/titi/.local/share/plasmashell/QtWebEngine/Default/Local Storage/leveldb/LOCK
bash 15827 titi 107u REG 254,0 524656 8199245 /home/titi/.cache/plasmashell/QtWebEngine/Default/Cache/index
bash 15827 titi 108u REG 254,0 192512 8199246 /home/titi/.cache/plasmashell/QtWebEngine/Default/Cache/data_0
bash 15827 titi 109u REG 254,0 1318912 8199247 /home/titi/.cache/plasmashell/QtWebEngine/Default/Cache/data_1
bash 15827 titi 110u REG 254,0 1056768 8199248 /home/titi/.cache/plasmashell/QtWebEngine/Default/Cache/data_2
bash 15827 titi 111u REG 254,0 41951232 8199249 /home/titi/.cache/plasmashell/QtWebEngine/Default/Cache/data_3
bash 15827 titi 113w REG 254,0 149 7809026 /home/titi/.local/share/plasmashell/QtWebEngine/Default/Local Storage/leveldb/MANIFEST-000001
bash 15827 titi 114w REG 254,0 10080 7798802 /home/titi/.local/share/plasmashell/QtWebEngine/Default/Local Storage/leveldb/000004.log
bash 15827 titi 115r REG 254,0 4481 7798801 /home/titi/.local/share/plasmashell/QtWebEngine/Default/Local Storage/leveldb/000003.ldb
...
This issue was happened recently, I don't know exactly when.
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