[linux-lvm] deadlock on snapshot creation; any way out without a reboot?
Andy Smith
andy at strugglers.net
Tue May 31 13:28:12 UTC 2005
On Tue, May 31, 2005 at 02:00:24PM +0100, Alasdair G Kergon wrote:
> On Tue, May 31, 2005 at 11:04:14AM +0000, Andy Smith wrote:
> > One of my LVs has just become unusable and I am hoping there is a
> > way to fix it without rebooting.
>
> What's the output of?
> dmsetup info -c
Name Maj Min Stat Open Targ Event UUID
mainvg-snaphomelv-cow 254 7 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4M2C3GjD3d1nEJsps51Hyj8NxCf9AvJJz-cow
mainvg-snapoutpostlonthlroot 254 23 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4r4xczWa1vAcc211xdMJZY5eUnkJZ93jZ
mainvg-snapcholetroot 254 33 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW42JSUt6ZnhEjGVug7OhM9oZ2cXyr6SZIo
mainvg-usrlv 254 0 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4mT2ApHrAfpAnDCWjRGAzyrY145rJMmcD
mainvg-snapoutpostlonthlroot-cow 254 22 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4r4xczWa1vAcc211xdMJZY5eUnkJZ93jZ-cow
mainvg-snapcholetroot-cow 254 31 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW42JSUt6ZnhEjGVug7OhM9oZ2cXyr6SZIo-cow
mainvg-strugglersroot-real 254 12 L--w 2 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW43jwledji1nh8rtcbheq8MUU1vi937zDK-real
mainvg-seinfeldswap 254 25 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4XScAry8eVwasTOLeIh6HfGSHim3fIuv9
mainvg-snapseinfeldroot-cow 254 27 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4d7y0mVHS1S7Rfo6J5Oe8cKiesY1aJEQh-cow
mainvg-adminswap 254 43 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW48Q2Z20jIewK2Vdt47Kn4IO6KBI28PIAm
mainvg-seinfeldroot 254 24 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW43BT9T40cl5HYYg3j1QIwfp5hc0LIqUsI
mainvg-adminroot 254 38 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4CjHGy8QpGKoH35P5U58Di1NKeYspeIR2
mainvg-admindata 254 42 LIsw 2 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4cCHdlPbllQNt50aJANhLrqbjUkK7jCsP
mainvg-tmplv 254 2 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4tfVsPETP9bimi535hqeX6Ch1yhYGePxS
mainvg-snapstrugglersroot 254 13 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW45v4N56kLTeiq2idjUAqiDqTMz031DRI8
mainvg-snaphomelv 254 9 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4M2C3GjD3d1nEJsps51Hyj8NxCf9AvJJz
mainvg-snapstrugglersdata 254 18 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4AxMTVPM37t6T8c8qpINqaP3BhQXo7o7m
mainvg-outpostlonthlroot-real 254 21 L--w 2 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4oTAjSEuyiaawrNF6iUbSrZqzWCHqOW1P-real
mainvg-choletroot-real 254 32 L--w 2 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4ZlGfn0e2THSlmotbck1bJBEPr12ngi7r-real
mainvg-seinfeldroot-real 254 26 L--w 2 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW43BT9T40cl5HYYg3j1QIwfp5hc0LIqUsI-real
mainvg-strugglersswap 254 15 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW43CcBI91LrT914eNMDyzhdYjym0rVQTsF
mainvg-outpostlonthlswap 254 20 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4BR8eDYVYzQJXlGPplq1YKB27p7h3HtZV
mainvg-strugglersroot 254 14 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW43jwledji1nh8rtcbheq8MUU1vi937zDK
mainvg-outpostlonthlroot 254 19 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4oTAjSEuyiaawrNF6iUbSrZqzWCHqOW1P
mainvg-homelv 254 6 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4cd3BqQaBDxmVgo7X37SYp33yQBeOA0n0
mainvg-strugglersdata 254 34 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4gp5msGLmNEROJHmToKkpBxe8SC8I7xQ6
mainvg-varlv 254 1 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4z0sYK4fz3qSmLuXYIvjR3y0Nt22DgsCB
mainvg-snapdatalv 254 5 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4FhuyRyCGWlfQNTjU9ffJmHJO4RUISXYG
mainvg-choletswap 254 30 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW47YXxUIkZdkdioRs7QxsBBJXFa0jslAWS
mainvg-choletroot 254 29 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4ZlGfn0e2THSlmotbck1bJBEPr12ngi7r
mainvg-homelv-real 254 8 L--w 2 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4cd3BqQaBDxmVgo7X37SYp33yQBeOA0n0-real
mainvg-snapstrugglersroot-cow 254 11 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW45v4N56kLTeiq2idjUAqiDqTMz031DRI8-cow
mainvg-datalv 254 10 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4OesUvyDaFU9O4jKDhPlChy4LpwYAMoe4
mainvg-snapstrugglersdata-cow 254 16 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4AxMTVPM37t6T8c8qpINqaP3BhQXo7o7m-cow
mainvg-snapseinfeldroot 254 28 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4d7y0mVHS1S7Rfo6J5Oe8cKiesY1aJEQh
mainvg-strugglersdata-real 254 17 L--w 2 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4gp5msGLmNEROJHmToKkpBxe8SC8I7xQ6-real
mainvg-datalv-real 254 3 L--w 2 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4OesUvyDaFU9O4jKDhPlChy4LpwYAMoe4-real
mainvg-snapdatalv-cow 254 4 L--w 1 1 0 PqzqVKCpoXCXe6QAIW4C32bS66OoLnW4FhuyRyCGWlfQNTjU9ffJmHJO4RUISXYG-cow
(mainvg-admindata being the one that's giving me problems)
> lvs -v
LV VG #Seg Attr LSize Maj Min KMaj KMin Origin Snap% Move Copy% LV UUID
admindata mainvg 1 -wi-so 5.86G -1 -1 254 42 cCHdlP-bllQ-Nt50-aJAN-hLrq-bjUk-K7jCsP
adminroot mainvg 1 -wi-ao 500.00M -1 -1 254 38 CjHGy8-QpGK-oH35-P5U5-8Di1-NKeY-speIR2
adminswap mainvg 1 -wi-ao 256.00M -1 -1 254 43 8Q2Z20-jIew-K2Vd-t47K-n4IO-6KBI-28PIAm
choletroot mainvg 1 owi-ao 1.00G -1 -1 254 29 ZlGfn0-e2TH-Slmo-tbck-1bJB-EPr1-2ngi7r
choletswap mainvg 1 -wi-ao 256.00M -1 -1 254 30 7YXxUI-kZdk-dioR-s7Qx-sBBJ-XFa0-jslAWS
datalv mainvg 1 owi-ao 1.00G -1 -1 254 10 OesUvy-DaFU-9O4j-KDhP-lChy-4Lpw-YAMoe4
homelv mainvg 1 owi-ao 1.00G -1 -1 254 6 cd3BqQ-aBDx-mVgo-7X37-SYp3-3yQB-eOA0n0
outpostlonthlroot mainvg 1 owi-ao 3.00G -1 -1 254 19 oTAjSE-uyia-awrN-F6iU-bSrZ-qzWC-HqOW1P
outpostlonthlswap mainvg 1 -wi-ao 256.00M -1 -1 254 20 BR8eDY-VYzQ-JXlG-Pplq-1YKB-27p7-h3HtZV
seinfeldroot mainvg 1 owi-ao 3.00G -1 -1 254 24 3BT9T4-0cl5-HYYg-3j1Q-Iwfp-5hc0-LIqUsI
seinfeldswap mainvg 1 -wi-ao 256.00M -1 -1 254 25 XScAry-8eVw-asTO-LeIh-6HfG-SHim-3fIuv9
snapcholetroot mainvg 1 swi-ao 1.00G -1 -1 254 33 choletroot 0.64 2JSUt6-ZnhE-jGVu-g7Oh-M9oZ-2cXy-r6SZIo
snapdatalv mainvg 1 swi-ao 512.00M -1 -1 254 5 datalv 8.21 FhuyRy-CGWl-fQNT-jU9f-fJmH-JO4R-UISXYG
snaphomelv mainvg 1 swi-ao 512.00M -1 -1 254 9 homelv 0.04 M2C3Gj-D3d1-nEJs-ps51-Hyj8-NxCf-9AvJJz
snapoutpostlonthlroot mainvg 1 swi-ao 1.00G -1 -1 254 23 outpostlonthlroot 1.32 r4xczW-a1vA-cc21-1xdM-JZY5-eUnk-JZ93jZ
snapseinfeldroot mainvg 1 swi-ao 1.00G -1 -1 254 28 seinfeldroot 3.20 d7y0mV-HS1S-7Rfo-6J5O-e8cK-iesY-1aJEQh
snapstrugglersdata mainvg 1 swi-ao 1.00G -1 -1 254 18 strugglersdata 3.48 AxMTVP-M37t-6T8c-8qpI-NqaP-3BhQ-Xo7o7m
snapstrugglersroot mainvg 1 swi-ao 1.00G -1 -1 254 13 strugglersroot 3.97 5v4N56-kLTe-iq2i-djUA-qiDq-TMz0-31DRI8
strugglersdata mainvg 1 owi-ao 10.00G -1 -1 254 34 gp5msG-LmNE-ROJH-mToK-kpBx-e8SC-8I7xQ6
strugglersroot mainvg 1 owi-ao 1.00G -1 -1 254 14 3jwled-ji1n-h8rt-cbhe-q8MU-U1vi-937zDK
strugglersswap mainvg 1 -wi-ao 256.00M -1 -1 254 15 3CcBI9-1LrT-914e-NMDy-zhdY-jym0-rVQTsF
tmplv mainvg 1 -wi-ao 1.00G -1 -1 254 2 tfVsPE-TP9b-imi5-35hq-eX6C-h1yh-YGePxS
usrlv mainvg 1 -wi-ao 8.00G -1 -1 254 0 mT2ApH-rAfp-AnDC-WjRG-Azyr-Y145-rJMmcD
varlv mainvg 1 -wi-ao 8.00G -1 -1 254 1 z0sYK4-fz3q-SmLu-XYIv-jR3y-0Nt2-2DgsCB
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