Thanks for all your tips and suggestions, all. I figured it out. I didn't realize I'd have to go into another screen in their web GUI and manually add the new disk image to my virtual machine. Once that's done, it's all cake. I'm now using 16GB of raw disk for my virtualized parent cache.
I probably should change that udev file to automate chown'ing the device on startup...but frankly I'm too nervous for that today. :) On Sat, Oct 19, 2013 at 3:42 PM, Adam W. Dace <[email protected]>wrote: > Yeah, I actually tried rebooting. No mention of xvdc anywhere. No device > in /dev/. > > I'm starting to think I may need to stick with ext3 as at least that shows > up on my virtual machine... > > > > On Sat, Oct 19, 2013 at 3:32 PM, Reindl Harald <[email protected]>wrote: > >> >> Am 19.10.2013 22:25, schrieb Adam W. Dace: >> > Huh. I'm running Linux kernel: >> > >> > Linux sparkle.adamdace.info <http://sparkle.adamdace.info> >> 3.9.3-x86_64-linode33 #1 SMP Mon May 20 10:22:57 EDT >> > 2013 x86_64 x86_64 x86_64 GNU/Linux >> > >> > Does this sound right? I'm thinking of trying to add: >> > KERNEL=="xvdc",OWNER="nobody" >> > >> > to the file /etc/udev/rules.d/60-raw.rules >> > >> > One other question...if I get this wrong somehow will my Linux server >> even boot? >> >> what are you doing here? >> you can't add any random crap >> >> you need to know the device on that machine and not write "xvdc" in a >> blackbox >> the udev-file is supposed to change the owner of the *existing device* at >> boot >> and not more but also not less, it would be the same "chown" it in a >> startup >> script before ATS mut this way more clean, i am on systemd environments >> where things are starting parallel >> >> so do you have a new, spare disk you can use at RAW disk? >> what device name has it? >> >> ls -lha /dev/ would be a starting point >> >> if you do not have a new virtual disk recognized by the kernel >> taht all make spretty no sense - if you added a virtual disk >> while the guest system is running maybe reboot it to recognize >> the new drive before continue doing anything else >> >> > On Sat, Oct 19, 2013 at 3:15 PM, Adam W. Dace < >> [email protected] <mailto:[email protected]>> wrote: >> > >> > I actually tried using MAKEDEV to create /dev/xvdc, chowned it to >> "nobody", and then have ATS use that. >> > >> > Unfortunately, then ATS gives me this error: >> > >> > [Oct 19 13:13:55.782] Server {0x2aaaab113f60} WARNING: unable to >> open '/dev/xvdc': -6, No such device or address >> > [Oct 19 13:13:55.782] Server {0x2aaaab113f60} WARNING: could not >> initialize storage "/dev/xvdc" [unable to open] >> > [Oct 19 13:13:55.782] Server {0x2aaaab113f60} WARNING: no cache >> disks specified in >> > /usr/local/etc/trafficserver/storage.config: cache disabled >> > >> > Any ideas? I feel like I'm missing something. >> > >> > >> > >> > On Sat, Oct 19, 2013 at 3:06 PM, Reindl Harald < >> [email protected] <mailto:[email protected]>> wrote: >> > >> > >> > Am 19.10.2013 21:39, schrieb Adam W. Dace: >> > > This is really more of a Linux virtualization question, but >> I'd rather ask you people than bother the hosting >> > > company if possible. >> > > >> > > First off, I was completely wrong about raw disk being >> available. My apologies, I should've checked. >> > That part is >> > > simple...they have a nice web GUI for that. >> > > >> > > Virtualization Software: Xen >> > > Host OS: CentOS 6.4 >> > > >> > > What I'm stuck on is how do I access a raw disk volume from >> Linux? >> > > >> > > If it helps, my /etc/fstab looks like this: >> > > >> > > /dev/xvda / ext3 >> noatime,errors=remount-ro 0 1 >> > > /dev/xvdb none swap sw >> 0 0 >> > > /proc /proc proc defaults >> 0 0 >> > > tmpfs /dev/shm tmpfs nodev,nosuid,noexec >> 0 0 >> > > devpts /dev/pts devpts gid=5,mode=620 >> 0 0 >> > > sysfs /sys sysfs defaults >> 0 0 >> > >> > you do not need it to acess from linux nor doe sit appear in >> fstab or df output >> > that is why it is called RAW disk, it is unformatted and under >> application control >> > >> > in the case below (from production) the whole /dev/sdc disk is >> assigend >> > to ATS and the udev-rule is needed to allow the ATS user write >> access >> > >> > nobody and nothig but ATS will ever access this drive >> > _____________________________________ >> > >> > [root@proxy:~]$ df >> > Dateisystem Typ Größe Benutzt Verf. Verw% Eingehängt auf >> > /dev/sdb1 ext4 5,8G 668M 5,2G 12% / >> > /dev/sda1 ext4 493M 34M 456M 7% /boot >> > _____________________________________ >> > >> > [root@proxy:~]$ cat /etc/trafficserver/storage.config >> > # Storage Configuration file >> > >> > # /etc/udev/rules.d/50-ats.rules >> > # Apache Traffic Server owns disk for RAW access >> > # KERNEL=="sdc", OWNER="ats" >> > >> > /dev/sdc >> > _____________________________________ >> > >> > [root@proxy:~]$ ls /dev/ | grep sd >> > brw-rw---- 1 root disk 8, 0 2013-10-11 19:36 sda >> > brw-rw---- 1 root disk 8, 1 2013-10-11 19:36 sda1 >> > brw-rw---- 1 root disk 8, 16 2013-10-11 19:36 sdb >> > brw-rw---- 1 root disk 8, 17 2013-10-11 19:36 sdb1 >> > brw------- 1 ats root 8, 32 2013-10-19 22:05 sdc >> > >> > >> > >> > >> > >> > >> > >> > >> > -- >> > ____________________________________________________________ >> > Adam W. Dace <[email protected] <mailto: >> [email protected]>> >> > >> > Phone: (815) 355-5848 <tel:%28815%29%20355-5848> >> > Instant Messenger: AIM & Yahoo! IM - colonelforbin74 | ICQ - >> #39374451 >> > Microsoft Messenger - [email protected] <mailto: >> [email protected]> >> > >> > Google Profile: >> https://plus.google.com/u/0/109309036874332290399/about >> > >> > >> > >> > >> > -- >> > ____________________________________________________________ >> > Adam W. Dace <[email protected] <mailto: >> [email protected]>> >> > >> > Phone: (815) 355-5848 >> > Instant Messenger: AIM & Yahoo! IM - colonelforbin74 | ICQ - #39374451 >> > Microsoft Messenger - [email protected] <mailto:[email protected]> >> > >> > Google Profile: https://plus.google.com/u/0/109309036874332290399/about >> >> -- >> >> Reindl Harald >> the lounge interactive design GmbH >> A-1060 Vienna, Hofmühlgasse 17 >> CTO / CISO / Software-Development >> m: +43 (676) 40 221 40, p: +43 (1) 595 3999 33 >> icq: 154546673, http://www.thelounge.net/ >> >> http://www.thelounge.net/signature.asc.what.htm >> >> > > > -- > ____________________________________________________________ > Adam W. Dace <[email protected]> > > Phone: (815) 355-5848 > Instant Messenger: AIM & Yahoo! IM - colonelforbin74 | ICQ - #39374451 > Microsoft Messenger - [email protected] <[email protected]> > > Google Profile: https://plus.google.com/u/0/109309036874332290399/about > -- ____________________________________________________________ Adam W. Dace <[email protected]> Phone: (815) 355-5848 Instant Messenger: AIM & Yahoo! IM - colonelforbin74 | ICQ - #39374451 Microsoft Messenger - [email protected] <[email protected]> Google Profile: https://plus.google.com/u/0/109309036874332290399/about
