LVM2+mdraid+systemd (was Re: [gentoo-user] systemd and lvm)
On Fri, Sep 13, 2013 at 7:42 AM, Stefan G. Weichinger li...@xunil.at wrote: Am 12.09.2013 20:23, schrieb Canek Peláez Valdés: Stefan, what initramfs are you using? dracut, run via your kerninst-script. Could you please explain how is exactly your layout? From drives to partitions to PVs, VGs and LVs? And throw in there also the LUKS and RAID (if used) setup. I will try to replicate that in a VM. Next week, since we have a holiday weekend coming. thanks for your offer. I wil happily list my setup BUT let me tell at first that the latest sys-fs/lvm2-2.02.100 seems to have fixed that semaphore-issue. After booting my desktop with it I quickly tested: # lvcreate -n test -L1G VG03 Logical volume test created # fine! Three times ok ... But I still face the fact that the LVs weren't activated at boot time. Manual vgchange -ay needed ... or that self-written lvm.service enabled as mentioned somewhat earlier. Here my setup: # lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda8:00 931,5G 0 disk ├─sda1 8:10 2M 0 part ├─sda2 8:20 2G 0 part [SWAP] ├─sda3 8:30 600G 0 part │ └─md127 9:127 0 595,1G 0 raid1 │ ├─VG03-music 253:00 190G 0 lvm /mnt/music │ ├─VG03-platz 253:10 200G 0 lvm /mnt/platz │ ├─VG03-media 253:2045G 0 lvm /mnt/media │ ├─VG03-home 253:3030G 0 lvm │ ├─VG03-oopsfiles 253:4012G 0 lvm /mnt/oopsfiles │ ├─VG03-dropbox 253:50 5G 0 lvm /mnt/dropbox │ ├─VG03-distfiles 253:6010G 0 lvm /usr/portage/distfiles │ ├─VG03-gentoo32 253:7015G 0 lvm /mnt/gentoo32 │ ├─VG03-xp253:8040G 0 lvm │ └─VG03-test 253:90 1G 0 lvm └─sda6 8:6050G 0 part └─md49:4050G 0 raid1 sdb8:16 0 931,5G 0 disk ├─sdb1 8:17 0 100M 0 part ├─sdb2 8:18 0 98,8G 0 part ├─sdb3 8:19 050G 0 part │ └─md49:4050G 0 raid1 ├─sdb4 8:20 0 12,4G 0 part └─sdb6 8:22 0 595,1G 0 part └─md127 9:127 0 595,1G 0 raid1 ├─VG03-music 253:00 190G 0 lvm /mnt/music ├─VG03-platz 253:10 200G 0 lvm /mnt/platz ├─VG03-media 253:2045G 0 lvm /mnt/media ├─VG03-home 253:3030G 0 lvm ├─VG03-oopsfiles 253:4012G 0 lvm /mnt/oopsfiles ├─VG03-dropbox 253:50 5G 0 lvm /mnt/dropbox ├─VG03-distfiles 253:6010G 0 lvm /usr/portage/distfiles ├─VG03-gentoo32 253:7015G 0 lvm /mnt/gentoo32 ├─VG03-xp253:8040G 0 lvm └─VG03-test 253:90 1G 0 lvm sdc8:32 0 55,9G 0 disk ├─sdc1 8:33 025G 0 part / ├─sdc2 8:34 0 2G 0 part └─sdc3 8:35 0 28,9G 0 part /home sr0 11:01 1024M 0 rom This pretty much says it all, right? 2 hdds sda and sdb 1 ssd sdc root-fs and /home on ssd ... sda and sdb build two RAID-arrays (rather ugly names and partitions ... grown over time): # cat /proc/mdstat Personalities : [raid1] md4 : active raid1 sdb3[0] sda6[2] 52395904 blocks super 1.2 [2/2] [UU] md127 : active raid1 sdb6[0] sda3[1] 623963072 blocks [2/2] [UU] unused devices: none # pvs PV VG Fmt Attr PSize PFree /dev/md127 VG03 lvm2 a-- 595,05g 47,05g Sorry I took my time, I was busy. Well, yours' a complex setup. This is a similar, although simpler, version: NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sr0 11:01 1024M 0 rom vda 253:005G 0 disk |-vda1 253:10 95M 0 part /boot |-vda2 253:20 1.9G 0 part [SWAP] `-vda3 253:303G 0 part /home vdb 253:16 05G 0 disk `-vdb1 253:17 05G 0 part / vdc 253:32 05G 0 disk `-vdc1 253:33 05G 0 part `-md127 9:127 05G 0 raid1 |-vg-vol1 (dm-0) 254:002G 0 lvm /home/canek/Music |-vg-vol2 (dm-1) 254:102G 0 lvm /home/canek/Pictures `-vg-vol3 (dm-2) 254:20 1020M 0 lvm /home/canek/Videos vdd 253:48 05G 0 disk `-vdd1 253:49 05G 0 part `-md127 9:127 05G 0 raid1 |-vg-vol1 (dm-0) 254:002G 0 lvm /home/canek/Music |-vg-vol2 (dm-1) 254:102G 0 lvm /home/canek/Pictures `-vg-vol3 (dm-2) 254:20 1020M 0 lvm /home/canek/Videos /boot on vda1 as ext2, / (root) on vdb1 as ext4, /home on vda3 as ext4, vda2 as swap, and vdc1 and vdd1 as
Re: LVM2+mdraid+systemd (was Re: [gentoo-user] systemd and lvm)
Am 20.09.2013 10:46, schrieb Canek Peláez Valdés: Sorry I took my time, I was busy. Well, yours' a complex setup. This is a similar, although simpler, version: At first: thank your for the extended test setup you did and described ... I will dig through it as soon as I find time ... I am quite busy these days as well. Thanks, regards, Stefan!
Re: LVM2+mdraid+systemd (was Re: [gentoo-user] systemd and lvm)
I haven't yet worked through all your suggestions/descriptions. Edited USE-flags and dracut-modules, worked around bug https://bugs.gentoo.org/show_bug.cgi?id=485202 and rebuilt kernel and initrd. Didn't activate LVs ... Now I edited fstab: I had the option systemd.automount enabled, like in /dev/mapper/VG03-media /mnt/media ext4 noatime,user_xattr,comment=systemd.automount 0 2 The/my idea behind that: the boot-process should not need to wait for the LVs activated/fscked/mounted ... and my root-fs and /home are both on the SSD anyway (not LVM-based). I removed that option and after the next boot the LVs were activated and mounted (though the booting was a bit slower, as expected). OK. I send this message now and test another few reboots. Thanks, Stefan
Re: LVM2+mdraid+systemd (was Re: [gentoo-user] systemd and lvm)
On Fri, Sep 20, 2013 at 11:17 AM, Stefan G. Weichinger li...@xunil.at wrote: I haven't yet worked through all your suggestions/descriptions. Edited USE-flags and dracut-modules, worked around bug https://bugs.gentoo.org/show_bug.cgi?id=485202 and rebuilt kernel and initrd. Didn't activate LVs ... Now I edited fstab: I had the option systemd.automount enabled, like in /dev/mapper/VG03-media /mnt/media ext4 noatime,user_xattr,comment=systemd.automount 0 2 The/my idea behind that: the boot-process should not need to wait for the LVs activated/fscked/mounted ... and my root-fs and /home are both on the SSD anyway (not LVM-based). I removed that option and after the next boot the LVs were activated and mounted (though the booting was a bit slower, as expected). OK. I send this message now and test another few reboots. Forgot to mention it: I also enabled mdadm.service. Regards. -- Canek Peláez Valdés Posgrado en Ciencia e Ingeniería de la Computación Universidad Nacional Autónoma de México
Re: LVM2+mdraid+systemd (was Re: [gentoo-user] systemd and lvm)
Am 20.09.2013 18:50, schrieb Canek Peláez Valdés: OK. I send this message now and test another few reboots. Forgot to mention it: I also enabled mdadm.service. That service is enabled here as well and running fine. # systemctl status lvm2-activation-net.service lvm2-activation-net.service - Activation of LVM2 logical volumes Loaded: loaded (/etc/lvm/lvm.conf) Active: inactive (dead) since Fr 2013-09-20 20:57:15 CEST Docs: man:lvm(8) man:vgchange(8) Process: 580 ExecStart=/sbin/lvm vgchange -aay --sysinit (code=exited, status=0/SUCCESS) Process: 366 ExecStartPre=/usr/bin/udevadm settle (code=exited, status=0/SUCCESS) Main PID: 580 (code=exited, status=0/SUCCESS) Sep 20 20:57:13 hiro.oops.intern lvm[580]: 10 logical volume(s) in volume group VG03 now active Sep 20 20:57:15 hiro.oops.intern systemd[1]: Started Activation of LVM2 logical volumes. nice ... but not at every boot ... one time they are activated, one time not. *sigh* Thanks for all your patience ... I could live with that lvm.service ;-) Considering to convert the mdadm-RAID to metadata 1.2 (wouldn't hurt anyway, right?) Stefan
Re: [gentoo-user] systemd and lvm
Am 12.09.2013 20:23, schrieb Canek Peláez Valdés: Stefan, what initramfs are you using? dracut, run via your kerninst-script. Could you please explain how is exactly your layout? From drives to partitions to PVs, VGs and LVs? And throw in there also the LUKS and RAID (if used) setup. I will try to replicate that in a VM. Next week, since we have a holiday weekend coming. thanks for your offer. I wil happily list my setup BUT let me tell at first that the latest sys-fs/lvm2-2.02.100 seems to have fixed that semaphore-issue. After booting my desktop with it I quickly tested: # lvcreate -n test -L1G VG03 Logical volume test created # fine! Three times ok ... But I still face the fact that the LVs weren't activated at boot time. Manual vgchange -ay needed ... or that self-written lvm.service enabled as mentioned somewhat earlier. Here my setup: # lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda8:00 931,5G 0 disk ├─sda1 8:10 2M 0 part ├─sda2 8:20 2G 0 part [SWAP] ├─sda3 8:30 600G 0 part │ └─md127 9:127 0 595,1G 0 raid1 │ ├─VG03-music 253:00 190G 0 lvm /mnt/music │ ├─VG03-platz 253:10 200G 0 lvm /mnt/platz │ ├─VG03-media 253:2045G 0 lvm /mnt/media │ ├─VG03-home 253:3030G 0 lvm │ ├─VG03-oopsfiles 253:4012G 0 lvm /mnt/oopsfiles │ ├─VG03-dropbox 253:50 5G 0 lvm /mnt/dropbox │ ├─VG03-distfiles 253:6010G 0 lvm /usr/portage/distfiles │ ├─VG03-gentoo32 253:7015G 0 lvm /mnt/gentoo32 │ ├─VG03-xp253:8040G 0 lvm │ └─VG03-test 253:90 1G 0 lvm └─sda6 8:6050G 0 part └─md49:4050G 0 raid1 sdb8:16 0 931,5G 0 disk ├─sdb1 8:17 0 100M 0 part ├─sdb2 8:18 0 98,8G 0 part ├─sdb3 8:19 050G 0 part │ └─md49:4050G 0 raid1 ├─sdb4 8:20 0 12,4G 0 part └─sdb6 8:22 0 595,1G 0 part └─md127 9:127 0 595,1G 0 raid1 ├─VG03-music 253:00 190G 0 lvm /mnt/music ├─VG03-platz 253:10 200G 0 lvm /mnt/platz ├─VG03-media 253:2045G 0 lvm /mnt/media ├─VG03-home 253:3030G 0 lvm ├─VG03-oopsfiles 253:4012G 0 lvm /mnt/oopsfiles ├─VG03-dropbox 253:50 5G 0 lvm /mnt/dropbox ├─VG03-distfiles 253:6010G 0 lvm /usr/portage/distfiles ├─VG03-gentoo32 253:7015G 0 lvm /mnt/gentoo32 ├─VG03-xp253:8040G 0 lvm └─VG03-test 253:90 1G 0 lvm sdc8:32 0 55,9G 0 disk ├─sdc1 8:33 025G 0 part / ├─sdc2 8:34 0 2G 0 part └─sdc3 8:35 0 28,9G 0 part /home sr0 11:01 1024M 0 rom This pretty much says it all, right? 2 hdds sda and sdb 1 ssd sdc root-fs and /home on ssd ... sda and sdb build two RAID-arrays (rather ugly names and partitions ... grown over time): # cat /proc/mdstat Personalities : [raid1] md4 : active raid1 sdb3[0] sda6[2] 52395904 blocks super 1.2 [2/2] [UU] md127 : active raid1 sdb6[0] sda3[1] 623963072 blocks [2/2] [UU] unused devices: none # pvs PV VG Fmt Attr PSize PFree /dev/md127 VG03 lvm2 a-- 595,05g 47,05g --- thanks in advance, Stefan
Re: [gentoo-user] systemd and lvm
new info here (for me): https://bugs.gentoo.org/show_bug.cgi?id=480066#c19 gotta test ... right now I don't have the time. S
Re: [gentoo-user] systemd and lvm
Am 13.09.2013 14:54, schrieb Stefan G. Weichinger: new info here (for me): https://bugs.gentoo.org/show_bug.cgi?id=480066#c19 gotta test ... right now I don't have the time. first tests with genkernel --udev ... : negative. More details maybe later this evening.
Re: [gentoo-user] systemd and lvm
Am 13.09.2013 15:33, schrieb Stefan G. Weichinger: Am 13.09.2013 14:54, schrieb Stefan G. Weichinger: new info here (for me): https://bugs.gentoo.org/show_bug.cgi?id=480066#c19 gotta test ... right now I don't have the time. first tests with genkernel --udev ... : negative. More details maybe later this evening. I found something. journalctl -b told me that systemd was looking for /usr/sbin/lvm which does not exist. I linked it from /sbin/lvm and this seems to help ... I still don't know exactly where this comes from ... still digging. I also removed lvm2 completely ... checked for lvm-related unit-files and emerged it again ... no /usr/sbin/lvm found with grep. Maybe compiled into ... /usr/lib/systemd/system-generators/lvm2-activation-generator Will have to check the sources or similar.
Re: [gentoo-user] systemd and lvm
Am 13.09.2013 19:36, schrieb Stefan G. Weichinger: /usr/sbin/lvm which does not exist. I linked it from /sbin/lvm and this seems to help ... I still don't know exactly where this comes from ... still digging. I also removed lvm2 completely ... checked for lvm-related unit-files and emerged it again ... no /usr/sbin/lvm found with grep. Maybe compiled into ... /usr/lib/systemd/system-generators/lvm2-activation-generator Will have to check the sources or similar. Oh ... much going on here: https://bugs.gentoo.org/show_bug.cgi?id=484752
Re: [gentoo-user] systemd and lvm
On Wednesday 11 Sep 2013 12:38:23 Stefan G. Weichinger wrote: Am 11.09.2013 13:22, schrieb Stefan G. Weichinger: Failed to set a proper state for notification semaphore identified by cookie value Also found this: http://forums.gentoo.org/viewtopic-t-965446-view-previous.html?sid=5c1f845f 96ca4cf1a9c17d73501e232d I have # zgrep UEV /proc/config.gz CONFIG_UEVENT_HELPER_PATH= CONFIG_DM_UEVENT=y so this is not my solution here ... I wonder if adding CONFIG_UEVENT_HELPER_PATH=/sbin/hotplug would help you here. -- Regards, Mick signature.asc Description: This is a digitally signed message part.
Re: [gentoo-user] systemd and lvm
Am 12.09.2013 08:50, schrieb Mick: On Wednesday 11 Sep 2013 12:38:23 Stefan G. Weichinger wrote: Am 11.09.2013 13:22, schrieb Stefan G. Weichinger: Failed to set a proper state for notification semaphore identified by cookie value Also found this: http://forums.gentoo.org/viewtopic-t-965446-view-previous.html?sid=5c1f845f 96ca4cf1a9c17d73501e232d I have # zgrep UEV /proc/config.gz CONFIG_UEVENT_HELPER_PATH= CONFIG_DM_UEVENT=y so this is not my solution here ... I wonder if adding CONFIG_UEVENT_HELPER_PATH=/sbin/hotplug would help you here. I don't have that binary. And some page on my way said the contrary: set it to empty and let udev (?) do that.
Re: [gentoo-user] systemd and lvm
On Thursday 12 Sep 2013 09:37:32 Stefan G. Weichinger wrote: Am 12.09.2013 08:50, schrieb Mick: On Wednesday 11 Sep 2013 12:38:23 Stefan G. Weichinger wrote: Am 11.09.2013 13:22, schrieb Stefan G. Weichinger: Failed to set a proper state for notification semaphore identified by cookie value Also found this: http://forums.gentoo.org/viewtopic-t-965446-view-previous.html?sid=5c1f8 45f 96ca4cf1a9c17d73501e232d I have # zgrep UEV /proc/config.gz CONFIG_UEVENT_HELPER_PATH= CONFIG_DM_UEVENT=y so this is not my solution here ... I wonder if adding CONFIG_UEVENT_HELPER_PATH=/sbin/hotplug would help you here. I don't have that binary. And some page on my way said the contrary: set it to empty and let udev (?) do that. Ha! Neither do I! # ls -la /sbin/hotplug ls: cannot access /sbin/hotplug: No such file or directory I can honestly say that I can't remember filling in this entry when configuring my kernels, but then how did it get there? -- Regards, Mick signature.asc Description: This is a digitally signed message part.
Re: [gentoo-user] systemd and lvm
Am 12.09.2013 14:43, schrieb Mick: I don't have that binary. And some page on my way said the contrary: set it to empty and let udev (?) do that. Ha! Neither do I! # ls -la /sbin/hotplug ls: cannot access /sbin/hotplug: No such file or directory I can honestly say that I can't remember filling in this entry when configuring my kernels, but then how did it get there? dunno. Kernel help says about that setting: Before the switch to the netlink-based uevent source, this was │ │ used to hook hotplug scripts into kernel device events. It │ │ usually pointed to a shell script at /sbin/hotplug. │ │ This should not be used today, because usual systems create │ │ many events at bootup or device discovery in a very short time │ │ frame. One forked process per event can create so many processes │ │ that it creates a high system load, or on smaller systems │ │ it is known to create out-of-memory situations during bootup. I also found configs having this: CONFIG_UEVENT_HELPER_PATH=/usr/bin/udevadm That binary would exist here. I am unsure if I should try that. S
Re: [gentoo-user] systemd and lvm
On Sep 12, 2013 8:04 AM, Stefan G. Weichinger li...@xunil.at wrote: Am 12.09.2013 14:43, schrieb Mick: I don't have that binary. And some page on my way said the contrary: set it to empty and let udev (?) do that. Ha! Neither do I! # ls -la /sbin/hotplug ls: cannot access /sbin/hotplug: No such file or directory I can honestly say that I can't remember filling in this entry when configuring my kernels, but then how did it get there? dunno. Kernel help says about that setting: Before the switch to the netlink-based uevent source, this was │ │ used to hook hotplug scripts into kernel device events. It │ │ usually pointed to a shell script at /sbin/hotplug. │ │ This should not be used today, because usual systems create │ │ many events at bootup or device discovery in a very short time │ │ frame. One forked process per event can create so many processes │ │ that it creates a high system load, or on smaller systems │ │ it is known to create out-of-memory situations during bootup. I also found configs having this: CONFIG_UEVENT_HELPER_PATH=/usr/bin/udevadm That binary would exist here. I am unsure if I should try that. Don't, that only will create potential fork bombs. Regards.
Re: [gentoo-user] systemd and lvm
On Thu, Sep 12 2013, Stefan G. Weichinger wrote: Am 12.09.2013 08:50, schrieb Mick: On Wednesday 11 Sep 2013 12:38:23 Stefan G. Weichinger wrote: Am 11.09.2013 13:22, schrieb Stefan G. Weichinger: Failed to set a proper state for notification semaphore identified by cookie value Also found this: http://forums.gentoo.org/viewtopic-t-965446-view-previous.html?sid=5c1f845f 96ca4cf1a9c17d73501e232d I have # zgrep UEV /proc/config.gz CONFIG_UEVENT_HELPER_PATH= CONFIG_DM_UEVENT=y so this is not my solution here ... I wonder if adding CONFIG_UEVENT_HELPER_PATH=/sbin/hotplug would help you here. I don't have that binary. And some page on my way said the contrary: set it to empty and let udev (?) do that. The wiki says to have it blank. I just started working with the systemd-wiki people and this is unsettled. Some are using /sbin/hotplug. I believe there is not much experience to go on. I will be trying to go to systemd with /sbin/hotplug. hth, allan
Re: [gentoo-user] systemd and lvm
On Thu, Sep 12, 2013 at 11:10 AM, gottl...@nyu.edu wrote: On Thu, Sep 12 2013, Stefan G. Weichinger wrote: Am 12.09.2013 08:50, schrieb Mick: On Wednesday 11 Sep 2013 12:38:23 Stefan G. Weichinger wrote: Am 11.09.2013 13:22, schrieb Stefan G. Weichinger: Failed to set a proper state for notification semaphore identified by cookie value Also found this: http://forums.gentoo.org/viewtopic-t-965446-view-previous.html?sid=5c1f845f 96ca4cf1a9c17d73501e232d I have # zgrep UEV /proc/config.gz CONFIG_UEVENT_HELPER_PATH= CONFIG_DM_UEVENT=y so this is not my solution here ... I wonder if adding CONFIG_UEVENT_HELPER_PATH=/sbin/hotplug would help you here. I don't have that binary. And some page on my way said the contrary: set it to empty and let udev (?) do that. The wiki says to have it blank. I just started working with the systemd-wiki people and this is unsettled. Some are using /sbin/hotplug. I believe there is not much experience to go on. I will be trying to go to systemd with /sbin/hotplug. Do you even have /sbin/hotplug? I don't, in any of my machines, and I don't even remember when was the last time I saw it. From the git live systemd README [1]: Legacy hotplug slows down the system and confuses udev: CONFIG_UEVENT_HELPER_PATH= From the kernel own help file: config UEVENT_HELPER_PATH string path to uevent helper default help Path to uevent helper program forked by the kernel for every uevent. Before the switch to the netlink-based uevent source, this was used to hook hotplug scripts into kernel device events. It usually pointed to a shell script at /sbin/hotplug. This should not be used today, because usual systems create many events at bootup or device discovery in a very short time frame. One forked process per event can create so many processes that it creates a high system load, or on smaller systems it is known to create out-of-memory situations during bootup. To disable user space helper program execution at early boot time specify an empty string here. This setting can be altered via /proc/sys/kernel/hotplug or via /sys/kernel/uevent_helper later at runtime. Really, whomever is recommending to set CONFIG_UEVENT_HELPER_PATH is probably wrong. I can't find *one* place where it is recommended, and several where they explicitly say to leave the option in blank. Regards. [1] http://cgit.freedesktop.org/systemd/systemd/tree/README -- Canek Peláez Valdés Posgrado en Ciencia e Ingeniería de la Computación Universidad Nacional Autónoma de México
Re: [gentoo-user] systemd and lvm
Am 12.09.2013 18:22, schrieb Canek Peláez Valdés: Really, whomever is recommending to set CONFIG_UEVENT_HELPER_PATH is probably wrong. I can't find *one* place where it is recommended, and several where they explicitly say to leave the option in blank. So ... I agree with this. What to do about the initial problem then? With openrc lvcreate is no problem, with systemd it is ... (for me, on 2 machines). Stefan
Re: [gentoo-user] systemd and lvm
On Thu, Sep 12, 2013 at 12:35 PM, Stefan G. Weichinger li...@xunil.at wrote: Am 12.09.2013 18:22, schrieb Canek Peláez Valdés: Really, whomever is recommending to set CONFIG_UEVENT_HELPER_PATH is probably wrong. I can't find *one* place where it is recommended, and several where they explicitly say to leave the option in blank. So ... I agree with this. What to do about the initial problem then? With openrc lvcreate is no problem, with systemd it is ... (for me, on 2 machines). Stefan, what initramfs are you using? I don't have much experience with LVM; I just installed a Qemu virtual machine with it, and it gave me no problems. But it was a dead simple setup. Your setup, however, seems to be rather complicated: you have LVM, LUKS and (if I remember correctly) software RAID? In my virtual machine I didn't had to do anything. There are no services for LVM, and there are no scripts doing nothing LVM related. There are a couple of udev rules, which I never touched, and systemd together with that seems to handle everything by itself. I have everything in LVM, including / and /boot (which is inside /). Could you please explain how is exactly your layout? From drives to partitions to PVs, VGs and LVs? And throw in there also the LUKS and RAID (if used) setup. I will try to replicate that in a VM. Next week, since we have a holiday weekend coming. When I installed my LVM setup, I was surprised to find how easy it was. The only problem I got was to install GRUB2 in /dev/vda, and even that wasn't that difficult, and only qemu related. So perhaps the problem is *moving* LVM machines to systemd, with the cruft from previous OpenRC installations. Perhaps you don't need to *add* anything, but to *remove* things that are not necessary anymore since systemd+dracut handles everything. Please explain to me your drive layout, so I can try to replicate it. Regards. -- Canek Peláez Valdés Posgrado en Ciencia e Ingeniería de la Computación Universidad Nacional Autónoma de México
Re: [gentoo-user] systemd and lvm
On Thu, Sep 12 2013, Canek Peláez Valdés wrote: Really, whomever is recommending to set CONFIG_UEVENT_HELPER_PATH is probably wrong. I can't find *one* place where it is recommended, and several where they explicitly say to leave the option in blank. OK. The wiki will continue to say it should be blank. allan
[gentoo-user] systemd and lvm
systemd-204 lvm2-2.0.2.99-r2 (lvm2 patched as mentioned in https://bugs.gentoo.org/show_bug.cgi?id=480066 this should only matter for activation) - See what happens here: # lvcreate -n mlp-tmpl -L 11G VG02 /dev/VG02/mlp-tmpl: not found: device not cleared Aborting. Failed to wipe start of new LV. device-mapper: remove ioctl on failed: Das Gerät oder die Ressource ist belegt semid 163841: semop failed for cookie 0xd4d92b7: incorrect semaphore state Failed to set a proper state for notification semaphore identified by cookie value 223187639 (0xd4d92b7) to initialize waiting for incoming notifications. # lvcreate -n mlp-tmpl -L 11G -Zn VG02 WARNING: mlp-tmpl not zeroed Logical volume mlp-tmpl created semid 196609: semop failed for cookie 0xd4d74cd: incorrect semaphore state Failed to set a proper state for notification semaphore identified by cookie value 223179981 (0xd4d74cd) to initialize waiting for incoming notifications. https://bugzilla.redhat.com/show_bug.cgi?id=727925 talks of udev_sync=1 ... checked that, is there ... CONFIG_NET_NS=y (whatever that is ... do I need it?) ... Does anyone know what to do? I wanted to ask here before I file a bug at bgo ... Would be nice to solve this before I set up my shiny new KVM host where I heavily want to use LVM-snapshots for backups. Sure, I could also stay with openrc, correct! (didn't mention: had that semaphore stuff on my main workstation as well, only when booting via systemd) Thanks, Stefan
Re: [gentoo-user] systemd and lvm
Am 11.09.2013 13:22, schrieb Stefan G. Weichinger: Failed to set a proper state for notification semaphore identified by cookie value Also found this: http://forums.gentoo.org/viewtopic-t-965446-view-previous.html?sid=5c1f845f96ca4cf1a9c17d73501e232d I have # zgrep UEV /proc/config.gz CONFIG_UEVENT_HELPER_PATH= CONFIG_DM_UEVENT=y so this is not my solution here ...
Re: [gentoo-user] Systemd and lvm
On Sunday 06 January 2013, Canek Peláez Valdés wrote: On Sat, Jan 5, 2013 at 7:36 AM, Robin Atwood robin.atw...@attglobal.net wrote: On Friday 04 Jan 2013, Canek Peláez Valdés wrote: On Fri, Jan 4, 2013 at 10:11 AM, Robin Atwood robin.atw...@attglobal.net wrote: Having observed all the ranting, I thought I would try systemd on a laptop. It actually seems to work quite well and it is a lot faster. However I am having trouble getting my LVM partitions mounted. I installed the LVM service unit from the Gentoo Wiki but it never completes, timing-out on a job that mounts /var. The VG is actually created by an initramfs and when systemd dumps you out to the emergency shell you can use lvs to see the volumes, /dev/mapper has all the correct devices and dmsetup ls shows the LVs. In fact, everything appears as it should, the partitions just don't get mounted. I circumvented this by putting mount -a in the lvm.service unit, which then completes and the mount jobs time-out. Everything seems to be OK but it is a bit of a kludge. One thing I notice is: # udevadm info -p /dev/mapper/vg00-rootfs -q all syspath not found Udev seems not to know about the LVs. Any ideas? How did you create your initramfs? Have you tried dracut, with DRACUT_MODULES=lvm? Regards. I always use genkernel with LVM=YES in genkernel.conf. There is a thread about the udev issue at http://forums.gentoo.org/viewtopic-p-6837888.html . I tried the suggested work-around but it made no difference, I must still use mount - a. I've never used genkernel. You could try dracut; its mandatory dependencies are minimal, and it's actually designed to create an initramfs, not like genkernel, where the functionality was added as an afterthought. Another option is to roll your own initramfs, like the first responder in the forums thread. Good luck. Maybe I will try dracut but I suspect the problem lies with systemd. -Robin -- -- Robin Atwood. Ship me somewheres east of Suez, where the best is like the worst, Where there ain't no Ten Commandments an' a man can raise a thirst from Mandalay by Rudyard Kipling --
Re: [gentoo-user] Systemd and lvm
On Friday 04 Jan 2013, Canek Peláez Valdés wrote: On Fri, Jan 4, 2013 at 10:11 AM, Robin Atwood robin.atw...@attglobal.net wrote: Having observed all the ranting, I thought I would try systemd on a laptop. It actually seems to work quite well and it is a lot faster. However I am having trouble getting my LVM partitions mounted. I installed the LVM service unit from the Gentoo Wiki but it never completes, timing-out on a job that mounts /var. The VG is actually created by an initramfs and when systemd dumps you out to the emergency shell you can use lvs to see the volumes, /dev/mapper has all the correct devices and dmsetup ls shows the LVs. In fact, everything appears as it should, the partitions just don't get mounted. I circumvented this by putting mount -a in the lvm.service unit, which then completes and the mount jobs time-out. Everything seems to be OK but it is a bit of a kludge. One thing I notice is: # udevadm info -p /dev/mapper/vg00-rootfs -q all syspath not found Udev seems not to know about the LVs. Any ideas? How did you create your initramfs? Have you tried dracut, with DRACUT_MODULES=lvm? Regards. I always use genkernel with LVM=YES in genkernel.conf. There is a thread about the udev issue at http://forums.gentoo.org/viewtopic-p-6837888.html . I tried the suggested work-around but it made no difference, I must still use mount - a. -Robin -- -- Robin Atwood. Ship me somewheres east of Suez, where the best is like the worst, Where there ain't no Ten Commandments an' a man can raise a thirst from Mandalay by Rudyard Kipling --
Re: [gentoo-user] Systemd and lvm
On Sat, Jan 5, 2013 at 7:36 AM, Robin Atwood robin.atw...@attglobal.net wrote: On Friday 04 Jan 2013, Canek Peláez Valdés wrote: On Fri, Jan 4, 2013 at 10:11 AM, Robin Atwood robin.atw...@attglobal.net wrote: Having observed all the ranting, I thought I would try systemd on a laptop. It actually seems to work quite well and it is a lot faster. However I am having trouble getting my LVM partitions mounted. I installed the LVM service unit from the Gentoo Wiki but it never completes, timing-out on a job that mounts /var. The VG is actually created by an initramfs and when systemd dumps you out to the emergency shell you can use lvs to see the volumes, /dev/mapper has all the correct devices and dmsetup ls shows the LVs. In fact, everything appears as it should, the partitions just don't get mounted. I circumvented this by putting mount -a in the lvm.service unit, which then completes and the mount jobs time-out. Everything seems to be OK but it is a bit of a kludge. One thing I notice is: # udevadm info -p /dev/mapper/vg00-rootfs -q all syspath not found Udev seems not to know about the LVs. Any ideas? How did you create your initramfs? Have you tried dracut, with DRACUT_MODULES=lvm? Regards. I always use genkernel with LVM=YES in genkernel.conf. There is a thread about the udev issue at http://forums.gentoo.org/viewtopic-p-6837888.html . I tried the suggested work-around but it made no difference, I must still use mount - a. I've never used genkernel. You could try dracut; its mandatory dependencies are minimal, and it's actually designed to create an initramfs, not like genkernel, where the functionality was added as an afterthought. Another option is to roll your own initramfs, like the first responder in the forums thread. Good luck. -- Canek Peláez Valdés Posgrado en Ciencia e Ingeniería de la Computación Universidad Nacional Autónoma de México
[gentoo-user] Systemd and lvm
Having observed all the ranting, I thought I would try systemd on a laptop. It actually seems to work quite well and it is a lot faster. However I am having trouble getting my LVM partitions mounted. I installed the LVM service unit from the Gentoo Wiki but it never completes, timing-out on a job that mounts /var. The VG is actually created by an initramfs and when systemd dumps you out to the emergency shell you can use lvs to see the volumes, /dev/mapper has all the correct devices and dmsetup ls shows the LVs. In fact, everything appears as it should, the partitions just don't get mounted. I circumvented this by putting mount -a in the lvm.service unit, which then completes and the mount jobs time-out. Everything seems to be OK but it is a bit of a kludge. One thing I notice is: # udevadm info -p /dev/mapper/vg00-rootfs -q all syspath not found Udev seems not to know about the LVs. Any ideas? TIA -Robin -- -- Robin Atwood. Ship me somewheres east of Suez, where the best is like the worst, Where there ain't no Ten Commandments an' a man can raise a thirst from Mandalay by Rudyard Kipling --
Re: [gentoo-user] Systemd and lvm
On Fri, Jan 4, 2013 at 10:11 AM, Robin Atwood robin.atw...@attglobal.net wrote: Having observed all the ranting, I thought I would try systemd on a laptop. It actually seems to work quite well and it is a lot faster. However I am having trouble getting my LVM partitions mounted. I installed the LVM service unit from the Gentoo Wiki but it never completes, timing-out on a job that mounts /var. The VG is actually created by an initramfs and when systemd dumps you out to the emergency shell you can use lvs to see the volumes, /dev/mapper has all the correct devices and dmsetup ls shows the LVs. In fact, everything appears as it should, the partitions just don't get mounted. I circumvented this by putting mount -a in the lvm.service unit, which then completes and the mount jobs time-out. Everything seems to be OK but it is a bit of a kludge. One thing I notice is: # udevadm info -p /dev/mapper/vg00-rootfs -q all syspath not found Udev seems not to know about the LVs. Any ideas? How did you create your initramfs? Have you tried dracut, with DRACUT_MODULES=lvm? Regards. -- Canek Peláez Valdés Posgrado en Ciencia e Ingeniería de la Computación Universidad Nacional Autónoma de México
