Bugzilla – Bug 1111991
No boot after kernelupdate to 4.12.14-lp150.12.19.1
Last modified: 2019-02-25 04:58:46 UTC
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0 Build Identifier: After Update through zypper, i can´ boot anymore. After starting Grub the error occur something like: btrfs critical btrfs corrupted (sda2) leaf........ then the system try to start services like modem-manager..., but it failled. I dit a rollback and with kernel 4.12.14-lp150.12.16, all went smoothly. Reproducible: Always
Are you using VirtualBox? (bug 1111076) Does 4.12.14-lp150.12.22.1 fix the issue for you?
No i am not using Virtualbox, i use kvm. I haven´t installed any virtualbox package. I also tried to uninstall the nvidia driver, but no change. I wonder how could be btrfs damaged with kernel ...19 but not with .19 and .22. Meanwhile i tried the kernel .22 the same behaviour than with .19.
Then it must be something else. Could you try to get the whole kernel boot messages via serial console with the latest kernel (after backing up the VM)? Since it sounds like a btrfs issue, reassign to Jeff for now.
This looks like the tree checker may be a bit overzealous.
Would you please paste the kernel message? At least full line of the corrupted leaf part. It's indeed tree-checker causing the problem, but normally tree-checker error is really showing something wrong. And in that case, I also recommend to use some rescue usb to boot and run latest btrfs check on the fs. Thanks, Qu
(In reply to Wenruo Qu from comment #5) > Would you please paste the kernel message? At least full line of the > corrupted leaf part. > > It's indeed tree-checker causing the problem, but normally tree-checker > error is really showing something wrong. > > And in that case, I also recommend to use some rescue usb to boot and run > latest btrfs check on the fs. > > Thanks, > Qu I can´t get a kernel message, the system doesn´t boot. Is there a way to get the messages?
You can set up a serial console for VM and pass console=ttyS0 boot option. Also try to remove quiet and splash=xxx boot options, too.
(In reply to Tom Hanker from comment #6) > (In reply to Wenruo Qu from comment #5) > > Would you please paste the kernel message? At least full line of the > > corrupted leaf part. > > > > It's indeed tree-checker causing the problem, but normally tree-checker > > error is really showing something wrong. > > > > And in that case, I also recommend to use some rescue usb to boot and run > > latest btrfs check on the fs. > > I can´t get a kernel message, the system doesn´t boot. Is there a way to get > the messages? You could use rescue USB to boot into some other distro, and run btrfs check on the fs, then try to mount it. It's recommended to use latest upstream kernel and latest btrfs-progs first. You can use Archlinux iso to do it. Thanks, Qu
(In reply to Wenruo Qu from comment #8) > (In reply to Tom Hanker from comment #6) > > (In reply to Wenruo Qu from comment #5) > > > Would you please paste the kernel message? At least full line of the > > > corrupted leaf part. > > > > > > It's indeed tree-checker causing the problem, but normally tree-checker > > > error is really showing something wrong. > > > > > > And in that case, I also recommend to use some rescue usb to boot and run > > > latest btrfs check on the fs. > > > > I can´t get a kernel message, the system doesn´t boot. Is there a way to get > > the messages? > > You could use rescue USB to boot into some other distro, and run btrfs check > on the fs, then try to mount it. > > It's recommended to use latest upstream kernel and latest btrfs-progs first. > You can use Archlinux iso to do it. > > Thanks, > Qu What Distor can i use? Ubuntu? I haven´t Arch Linux but i can download it on Multisystem. Has Ubuntu and ARchlinux the tools to start btrfs check /dev/sda2. Or should i use an Opensuse LiveCD? I will try it tomorrow. But if the filesystem is broken in kerne .19, why not in kernel .16? The Kernel .16 works without Problems. By the way the System isn´t installed on a VirtualMachine.
You don't need to use another distro. The openSUSE Tumbleweed rescue ISO has the latest kernel and tools: http://download.opensuse.org/tumbleweed/iso/openSUSE-Tumbleweed-Rescue-CD-x86_64-Current.iso But before you do that, we'd be interested in the messages the kernel is producing now. Takashi's suggestion to capture the kernel log using the virtual serial console and without 'quiet' is your best bet.
(In reply to Jeff Mahoney from comment #11) > You don't need to use another distro. The openSUSE Tumbleweed rescue ISO > has the latest kernel and tools: > > http://download.opensuse.org/tumbleweed/iso/openSUSE-Tumbleweed-Rescue-CD- > x86_64-Current.iso > > But before you do that, we'd be interested in the messages the kernel is > producing now. Takashi's suggestion to capture the kernel log using the > virtual serial console and without 'quiet' is your best bet. I don´t know anything about a "virtual serial console" I red the command btrfs check --repair could take about 24 hours.
How do you start your VM? If you're using some GUI for managing VM, there must be a configuration menu to allow user to enable a serial-console. After enabling it, start the VM and pass "console=ttyS0" boot option. Then the kernel messages will be output to that serial console. If you start from a command-line, passing "-serial stdio" to qemu-kvm will lead the serial output to stdout, for example.
(In reply to Takashi Iwai from comment #13) > How do you start your VM? If you're using some GUI for managing VM, there > must be a configuration menu to allow user to enable a serial-console. > After enabling it, start the VM and pass "console=ttyS0" boot option. Then > the kernel messages will be output to that serial console. > > If you start from a command-line, passing "-serial stdio" to qemu-kvm will > lead the serial output to stdout, for example. I usw virtmanager. So i add a device. In this case serial (pseudo TTY pty). Or should i add a console pseudo TTY pty typ virt0? I did it then in menu disply textconsole i can see serial1 and of course there isn´t any text. If i put the line GRUB_CMDLINE_LINUX_DEFAULT=”console=ttyS0″ to /etc/default/grub, then ei can read the messages in the textconsole serial1?
Just add console=ttyS0 should work. You can add it temporarily in GRUB menu, or permanently via /etc/default/grub. Please refer to the guide https://doc.opensuse.org/documentation/leap/virtualization/html/book.virt/book.virt.html
The next Problem. i wanted to add in virtualmanager a device. serial - pseudo TTY (pty), then i got this measage. internal error: Kann Qemu-Befehl 'device_add' nicht ausführen: Bus 'isa.0' does not support hotplugging Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/addhardware.py", line 1318, in _add_device self.vm.attach_device(self._dev) File "/usr/share/virt-manager/virtManager/domain.py", line 1093, in attach_device self._backend.attachDevice(devxml) File "/usr/lib64/python3.6/site-packages/libvirt.py", line 570, in attachDevice if ret == -1: raise libvirtError ('virDomainAttachDevice() failed', dom=self) libvirt.libvirtError: internal error: Kann Qemu-Befehl 'device_add' nicht ausführen: Bus 'isa.0' does not support hotplugging
I managed to add a serial console, i edited /etc/boot/default, make a restart and boot with kernel .19. The usual errors occur. Then i restart boot in kernel .16, open the virtmanager, but the serialconsole has no messeges. but i could found messeges in /var/log/boot. [ OK ] Started Check if mainboard battery is Ok. [ OK ] Started Rotate log files. [ OK ] Started Backup /etc/sysconfig directory. Starting Locale Service... [ OK ] Started Apply settings from /etc/sysconfig/keyboard. [ OK ] Started Save/Restore Sound Card State. [ OK ] Started Name Service Cache Daemon. [FAILED] Failed to start Virtual Machine and Container Registration Service. See 'systemctl status systemd-machined.service' for details. [ OK ] Started Machine Check Exception Logging Daemon. [ OK ] Started Update system wide CA certificates. [ OK ] Started Initialize hardware monitoring sensors. [FAILED] Failed to start Modem Manager. See 'systemctl status ModemManager.service' for details. [FAILED] Failed to start wicked AutoIPv4 supplicant service. See 'systemctl status wickedd-auto4.service' for details. [FAILED] Failed to start firewalld - dynamic firewall daemon. See 'systemctl status firewalld.service' for details. [FAILED] Failed to start wicked DHCPv4 supplicant service. See 'systemctl status wickedd-dhcp4.service' for details. [FAILED] Failed to start wicked DHCPv6 supplicant service. See 'systemctl status wickedd-dhcp6.service' for details. [FAILED] Failed to start Avahi mDNS/DNS-SD Stack. See 'systemctl status avahi-daemon.service' for details. [FAILED] Failed to start LSB: Supports the direct execution of binary formats.. See 'systemctl status jexec.service' for details. Thsi are the errors when i boot with kernel .19 But i can´t find the messeges about the btrfs error.
Please remove "quiet" and "splash=xxx" boot options. Then you must see lots of messages in serial console.
(In reply to Takashi Iwai from comment #18) > Please remove "quiet" and "splash=xxx" boot options. Then you must see lots > of messages in serial console. I did, but can´t see any message in the console. I only can see the detailed messeges on the boot. I found a similar output: BTRFS critical (device sda2): corrupt leaf, slot offset bad: block=43231330304,root=1, slot=47 This message comes 3 times, then the it goes on with the message above. I red it could be a hardware crash, but if why not with kernel .16
> BTRFS critical (device sda2): corrupt leaf, slot offset bad: > block=43231330304,root=1, slot=47 > That's what we need. It's a corruption in root tree, so it's really serious. We need some extra info about the corruption. Would you please use the following command to dump that corrupted block? # btrfs ins dump-tree -b 43231330304 /dev/sda2 > This message comes 3 times, then the it goes on with the message above. I > red it could be a hardware crash, but if why not with kernel .16 Because .16 kernel doesn't has such restrict content check. But strangely, the error message doesn't provide enough info, unlike latest upstream. (Normally it should provide more detailed info on which is going wrong). Anyway, that "btrfs ins dump-tree" should tell us if it's just a minor fixable problem or a real corruption. Thanks, Qu
(In reply to Wenruo Qu from comment #20) > > BTRFS critical (device sda2): corrupt leaf, slot offset bad: > > block=43231330304,root=1, slot=47 > > > > That's what we need. > > It's a corruption in root tree, so it's really serious. > > We need some extra info about the corruption. > > Would you please use the following command to dump that corrupted block? > > # btrfs ins dump-tree -b 43231330304 /dev/sda2 > > > This message comes 3 times, then the it goes on with the message above. I > > red it could be a hardware crash, but if why not with kernel .16 > > Because .16 kernel doesn't has such restrict content check. > But strangely, the error message doesn't provide enough info, unlike latest > upstream. > (Normally it should provide more detailed info on which is going wrong). > > Anyway, that "btrfs ins dump-tree" should tell us if it's just a minor > fixable problem or a real corruption. > > Thanks, > Qu Ok. the number 43231330304 was only an example, which i copy from the net. i bootet again and got the right one. this is the output, very long: btrfs ins dump-tree -b 301168066560 /dev/sda2 btrfs-progs v4.15 leaf 301168066560 items 230 free space 1356 generation 362173 owner 2789 leaf 301168066560 flags 0x1(WRITTEN) backref revision 1 fs uuid 922affe3-95d9-49e5-92aa-9fb3c4749279 chunk uuid 858737e2-d8ab-4e61-9ca3-95dc7035c5c5 item 0 key (10550 DIR_ITEM 4272056) itemoff 16248 itemsize 35 location key (8141473 INODE_ITEM 0) type FILE transid 270396 data_len 0 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key (7978683 INODE_ITEM 0) type FILE transid 270380 data_len 0 name_len 3 name: pic item 206 key (10550 DIR_ITEM 284394741) itemoff 8039 itemsize 37 location key (7987980 INODE_ITEM 0) type FILE transid 270381 data_len 0 name_len 7 name: pfbtops item 207 key (10550 DIR_ITEM 287254989) itemoff 8001 itemsize 38 location key (7987885 INODE_ITEM 0) type FILE transid 270381 data_len 0 name_len 8 name: aseqdump item 208 key (10550 DIR_ITEM 287622286) itemoff 7963 itemsize 38 location key (7939221 INODE_ITEM 0) type FILE transid 270378 data_len 0 name_len 8 name: mrftopbm item 209 key (10550 DIR_ITEM 288289702) itemoff 7915 itemsize 48 location key (7939333 INODE_ITEM 0) type FILE transid 270378 data_len 0 name_len 18 name: pbmtomatrixorbital item 210 key (10550 DIR_ITEM 289396669) itemoff 7879 itemsize 36 location key (7976671 INODE_ITEM 0) type FILE transid 270380 data_len 0 name_len 6 name: ld.bfd item 211 key (10550 DIR_ITEM 290169847) itemoff 7827 itemsize 52 location key (9006138 INODE_ITEM 0) type FILE transid 361523 data_len 0 name_len 22 name: nvidia-cuda-mps-server item 212 key (10550 DIR_ITEM 291206685) itemoff 7780 itemsize 47 location key (8100727 INODE_ITEM 0) type FILE transid 270392 data_len 0 name_len 17 name: gwenview_importer item 213 key (10550 DIR_ITEM 291944630) itemoff 7744 itemsize 36 location key (7899796 INODE_ITEM 0) type FILE transid 270375 data_len 0 name_len 6 name: xvinfo item 214 key (10550 DIR_ITEM 292549067) itemoff 7706 itemsize 38 location key (8026788 INODE_ITEM 0) type FILE transid 270385 data_len 0 name_len 8 name: hdisk.pl item 215 key (10550 DIR_ITEM 299125689) itemoff 7660 itemsize 46 location key (7884520 INODE_ITEM 0) type FILE transid 270371 data_len 0 name_len 16 name: dbus-run-session item 216 key (10550 DIR_ITEM 299386369) itemoff 7622 itemsize 38 location key (7899436 INODE_ITEM 0) type FILE transid 270375 data_len 0 name_len 8 name: fipshmac item 217 key (10550 DIR_ITEM 300266558) itemoff 7579 itemsize 43 location key (8375547 INODE_ITEM 0) type FILE transid 298231 data_len 0 name_len 13 name: zipgrep-plain item 218 key (10550 DIR_ITEM 300774940) itemoff 7531 itemsize 48 location key (8783607 INODE_ITEM 0) type FILE transid 336134 data_len 0 name_len 18 name: plasma_waitforname item 219 key (10550 DIR_ITEM 302841040) itemoff 7498 itemsize 33 location key (7866057 INODE_ITEM 0) type FILE transid 270369 data_len 0 name_len 3 name: tgz item 220 key (10550 DIR_ITEM 304579196) itemoff 7461 itemsize 37 location key (7940452 INODE_ITEM 0) type FILE transid 270378 data_len 0 name_len 7 name: lavpipe item 221 key (10550 DIR_ITEM 305503608) itemoff 7422 itemsize 39 location key (7987230 INODE_ITEM 0) type FILE transid 270381 data_len 0 name_len 9 name: splitmail item 222 key (10550 DIR_ITEM 308616482) itemoff 7383 itemsize 39 location key (8114312 INODE_ITEM 0) type FILE transid 270393 data_len 0 name_len 9 name: konqueror item 223 key (10550 DIR_ITEM 309391749) itemoff 7347 itemsize 36 location key (8145072 INODE_ITEM 0) type FILE transid 270396 data_len 0 name_len 6 name: ktrash item 224 key (10550 DIR_ITEM 310183877) itemoff 7311 itemsize 36 location key (7935740 INODE_ITEM 0) type FILE transid 270378 data_len 0 name_len 6 name: sg_ses item 225 key (10550 DIR_ITEM 311147668) itemoff 7274 itemsize 37 location key (7939276 INODE_ITEM 0) type FILE transid 270378 data_len 0 name_len 7 name: pamtilt item 226 key (10550 DIR_ITEM 311778987) itemoff 7236 itemsize 38 location key (7939418 INODE_ITEM 0) type SYMLINK transid 270378 data_len 0 name_len 8 name: pnmscale item 227 key (10550 DIR_ITEM 312520839) itemoff 7195 itemsize 41 location key (8141472 INODE_ITEM 0) type FILE transid 270396 data_len 0 name_len 11 name: kcookiejar4 item 228 key (10550 DIR_ITEM 314757239) itemoff 7156 itemsize 39 location key (7881402 INODE_ITEM 0) type FILE transid 270371 data_len 0 name_len 9 name: clrunimap item 229 key (10550 DIR_ITEM 317231188) itemoff 7106 itemsize 50 location key (8038449 INODE_ITEM 0) type FILE transid 270386 data_len 0 name_len 20 name: akonadi_ews_resource localhost:/home/thekir #
(In reply to Tom Hanker from comment #21) > (In reply to Wenruo Qu from comment #20) > > > BTRFS critical (device sda2): corrupt leaf, slot offset bad: > > > block=43231330304,root=1, slot=47 > > > > > > > That's what we need. > > > > It's a corruption in root tree, so it's really serious. > > > > We need some extra info about the corruption. > > > > Would you please use the following command to dump that corrupted block? > > > > # btrfs ins dump-tree -b 43231330304 /dev/sda2 > > > > > This message comes 3 times, then the it goes on with the message above. I > > > red it could be a hardware crash, but if why not with kernel .16 > > > > Because .16 kernel doesn't has such restrict content check. > > But strangely, the error message doesn't provide enough info, unlike latest > > upstream. > > (Normally it should provide more detailed info on which is going wrong). > > > > Anyway, that "btrfs ins dump-tree" should tell us if it's just a minor > > fixable problem or a real corruption. > > > > Thanks, > > Qu > > Ok. the number 43231330304 was only an example, which i copy from the net. i > bootet again and got the right one. this is the output, very long: When pasting kernel message, please ensure it's pasted as is, without any difference. I want to be sure that the slot number and the error message are also correct. At least from what I see, slot 46/47/48 has nothing wrong, and the tree block owner doesn't even match with the output. If the slot number is not 47, please provide the correct kernel message. If it's slot 47, then it maybe some thing wrong with the backported tree checker. Thanks, Qu > > btrfs ins dump-tree -b 301168066560 /dev/sda2 > btrfs-progs v4.15 > leaf 301168066560 items 230 free space 1356 generation 362173 owner 2789 > leaf 301168066560 flags 0x1(WRITTEN) backref revision 1 > fs uuid 922affe3-95d9-49e5-92aa-9fb3c4749279 > chunk uuid 858737e2-d8ab-4e61-9ca3-95dc7035c5c5 > localhost:/home/thekir #
(In reply to Wenruo Qu from comment #22) > (In reply to Tom Hanker from comment #21) > > (In reply to Wenruo Qu from comment #20) > > > > BTRFS critical (device sda2): corrupt leaf, slot offset bad: > > > > block=43231330304,root=1, slot=47 > > > > > > > > > > That's what we need. > > > > > > It's a corruption in root tree, so it's really serious. > > > > > > We need some extra info about the corruption. > > > > > > Would you please use the following command to dump that corrupted block? > > > > > > # btrfs ins dump-tree -b 43231330304 /dev/sda2 > > > > > > > This message comes 3 times, then the it goes on with the message above. I > > > > red it could be a hardware crash, but if why not with kernel .16 > > > > > > Because .16 kernel doesn't has such restrict content check. > > > But strangely, the error message doesn't provide enough info, unlike latest > > > upstream. > > > (Normally it should provide more detailed info on which is going wrong). > > > > > > Anyway, that "btrfs ins dump-tree" should tell us if it's just a minor > > > fixable problem or a real corruption. > > > > > > Thanks, > > > Qu > > > > Ok. the number 43231330304 was only an example, which i copy from the net. i > > bootet again and got the right one. this is the output, very long: > > When pasting kernel message, please ensure it's pasted as is, without any > difference. > > I want to be sure that the slot number and the error message are also > correct. > At least from what I see, slot 46/47/48 has nothing wrong, and the tree > block owner doesn't > even match with the output. > > If the slot number is not 47, please provide the correct kernel message. > If it's slot 47, then it maybe some thing wrong with the backported tree > checker. > > Thanks, > Qu > > > > > btrfs ins dump-tree -b 301168066560 /dev/sda2 > > btrfs-progs v4.15 > > leaf 301168066560 items 230 free space 1356 generation 362173 owner 2789 > > leaf 301168066560 flags 0x1(WRITTEN) backref revision 1 > > fs uuid 922affe3-95d9-49e5-92aa-9fb3c4749279 > > chunk uuid 858737e2-d8ab-4e61-9ca3-95dc7035c5c5 > > > localhost:/home/thekir # The slotnumber slot=75 ino 10550
> > > localhost:/home/thekir # > > The slotnumber slot=75 ino 10550 This makes sense. It's DIR_ITEM with conflicting hash. I'll check if the kernel has something wrong in the tree checker. Thanks, Qu
(In reply to Wenruo Qu from comment #24) > > > > localhost:/home/thekir # > > > > The slotnumber slot=75 ino 10550 > > This makes sense. It's DIR_ITEM with conflicting hash. > I'll check if the kernel has something wrong in the tree checker. > > Thanks, > Qu O.k thats fine. Thank you!
OK, it turns out that, it's a real corruption here. In slot 75: item 75 key (10550 DIR_ITEM 108382495) itemoff 13225 itemsize 72 location key (74333 INODE_ITEM 0) type FILE transid 58 data_len 0 name_len 6 name: newg location key (8869339 INODE_ITEM 0) type FILE transid 346840 data_len 0 name_len 6 name: newgrp The first DIR_ITEM, name_len 6 with name: "newg\0\0". Its hash won't match with 108382495. And .16 kernel detects such problem, then refuse to read it. (early kernel doesn't has such error detection, so they just let them pass) Considering the transid, it's pretty old, so could be caused by early kernel bugs. In that case, we need to ensure there is only one corruption for the fs. Please run "btrfs check --readonly" on that fs, and attach the result as a file. After that, we can determine how to solve the problem. Thanks, Qu
Created attachment 786498 [details] btrfs --check
I used --forece because i haven´t much time, so the check was within a running system.
Just as the btrfs check shows, your filesystem is indeed corrupted. And the corruption is caused by old kernel, and the corruption is shared between several snapshots. Currently btrfs check can detect it but can't really fix it well. I'll enhance btrfs check repair functionality to fix it. Thanks, Qu
(In reply to Wenruo Qu from comment #29) > Just as the btrfs check shows, your filesystem is indeed corrupted. > > And the corruption is caused by old kernel, and the corruption is shared > between several snapshots. > > Currently btrfs check can detect it but can't really fix it well. > I'll enhance btrfs check repair functionality to fix it. > > Thanks, > Qu Ok. thank you! Could the error caused by an update, dist-upgrade, cloning? I upgraded from 42.3 to 15.0 and later clone it to a new ssd.
(In reply to Tom Hanker from comment #30) > (In reply to Wenruo Qu from comment #29) > > Just as the btrfs check shows, your filesystem is indeed corrupted. > > > > And the corruption is caused by old kernel, and the corruption is shared > > between several snapshots. > > > > Currently btrfs check can detect it but can't really fix it well. > > I'll enhance btrfs check repair functionality to fix it. > > > > Thanks, > > Qu > > Ok. thank you! Could the error caused by an update, dist-upgrade, cloning? I > upgraded from 42.3 to 15.0 and later clone it to a new ssd. So it looks like old kernel caused the problem. I'm not sure if dist-upgrade could cause such problem, but the bug itself looks like something went wrong with rename/overwrite. At least it shouldn't happen for newer kernel. You could still use older kernel to access the files. But it's recommended to try to copy your subvolume contents to a newly created subvolume using reflink. Then delete the following subvolumes: 598 2702 2703 2711 2713 2719 2730 2740 2741 2783 2784 2788 2789 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 With newly created subvolume and copied files, that corrupted item should not go into the new subvolume. And with old subvolumes/snapshots removed, there will be no corruption remain. Thanks, Qu
(In reply to Wenruo Qu from comment #31) > (In reply to Tom Hanker from comment #30) > > (In reply to Wenruo Qu from comment #29) > > > Just as the btrfs check shows, your filesystem is indeed corrupted. > > > > > > And the corruption is caused by old kernel, and the corruption is shared > > > between several snapshots. > > > > > > Currently btrfs check can detect it but can't really fix it well. > > > I'll enhance btrfs check repair functionality to fix it. > > > > > > Thanks, > > > Qu > > > > Ok. thank you! Could the error caused by an update, dist-upgrade, cloning? I > > upgraded from 42.3 to 15.0 and later clone it to a new ssd. > > So it looks like old kernel caused the problem. > > I'm not sure if dist-upgrade could cause such problem, but the bug itself > looks like something went wrong with rename/overwrite. > > At least it shouldn't happen for newer kernel. > > You could still use older kernel to access the files. > But it's recommended to try to copy your subvolume contents to a newly > created subvolume using reflink. Then delete the following subvolumes: > 598 > 2702 > 2703 > 2711 > 2713 > 2719 > 2730 > 2740 > 2741 > 2783 > 2784 > 2788 > 2789 > 2835 > 2836 > 2837 > 2838 > 2839 > 2840 > 2841 > 2842 > 2843 > 2844 > 2845 > 2846 > 2847 > 2848 > 2849 > 2850 > > With newly created subvolume and copied files, that corrupted item should > not go into the new subvolume. > And with old subvolumes/snapshots removed, there will be no corruption > remain. > > Thanks, > Qu Thank you! But which subvolume should i copy? First delete than copy? I got to many? What is a reflink, i only see a command: btrfs subvolume delete do the command need a part or the number, or can i delete it with snapper? this is my list: btrfs subvolume list / ID 257 gen 356300 top level 5 path @ ID 258 gen 363922 top level 257 path @/.snapshots ID 260 gen 363591 top level 257 path @/boot/grub2/i386-pc ID 261 gen 360656 top level 257 path @/boot/grub2/x86_64-efi ID 262 gen 362998 top level 257 path @/opt ID 263 gen 362173 top level 257 path @/srv ID 264 gen 363956 top level 257 path @/tmp ID 265 gen 363823 top level 257 path @/usr/local ID 266 gen 363823 top level 257 path @/var/cache ID 267 gen 350923 top level 257 path @/var/crash ID 268 gen 363702 top level 257 path @/var/lib/libvirt/images ID 269 gen 68 top level 257 path @/var/lib/machines ID 270 gen 277200 top level 257 path @/var/lib/mailman ID 271 gen 277200 top level 257 path @/var/lib/mariadb ID 272 gen 277200 top level 257 path @/var/lib/mysql ID 273 gen 277200 top level 257 path @/var/lib/named ID 274 gen 277200 top level 257 path @/var/lib/pgsql ID 275 gen 363956 top level 257 path @/var/log ID 276 gen 350923 top level 257 path @/var/opt ID 277 gen 363946 top level 257 path @/var/spool ID 278 gen 363624 top level 257 path @/var/tmp ID 540 gen 277200 top level 258 path @/.snapshots/221/snapshot ID 596 gen 350923 top level 258 path @/.snapshots/268/snapshot ID 598 gen 355469 top level 258 path @/.snapshots/270/snapshot ID 2702 gen 356406 top level 258 path @/.snapshots/564/snapshot ID 2703 gen 360656 top level 258 path @/.snapshots/565/snapshot ID 2711 gen 360656 top level 258 path @/.snapshots/566/snapshot ID 2713 gen 360656 top level 258 path @/.snapshots/568/snapshot ID 2719 gen 360656 top level 258 path @/.snapshots/570/snapshot ID 2730 gen 360656 top level 258 path @/.snapshots/579/snapshot ID 2740 gen 360656 top level 258 path @/.snapshots/589/snapshot ID 2741 gen 360663 top level 258 path @/.snapshots/590/snapshot ID 2783 gen 361133 top level 258 path @/.snapshots/629/snapshot ID 2784 gen 361143 top level 258 path @/.snapshots/630/snapshot ID 2788 gen 361232 top level 258 path @/.snapshots/633/snapshot ID 2789 gen 363956 top level 258 path @/.snapshots/634/snapshot ID 2841 gen 363083 top level 258 path @/.snapshots/685/snapshot ID 2842 gen 363085 top level 258 path @/.snapshots/686/snapshot ID 2843 gen 363140 top level 258 path @/.snapshots/687/snapshot ID 2844 gen 363142 top level 258 path @/.snapshots/688/snapshot ID 2845 gen 363552 top level 258 path @/.snapshots/689/snapshot ID 2846 gen 363553 top level 258 path @/.snapshots/690/snapshot ID 2847 gen 363580 top level 258 path @/.snapshots/691/snapshot ID 2848 gen 363587 top level 258 path @/.snapshots/692/snapshot ID 2849 gen 363588 top level 258 path @/.snapshots/693/snapshot ID 2850 gen 363590 top level 258 path @/.snapshots/694/snapshot
> > Thank you! But which subvolume should i copy? I'm not familiar with openSUSE's snapshots/subvolumes layout. Maybe Jeff could provide some suggestion? > First delete than copy? Copy first, then delete. > I got to many? The corruption happens between snapshot 596 and 598. If you coud provide the timestamp of that two snapshots, we could get a basic idea of when the corruption happens (we're just curious when the corruption happens). > What is a reflink, # cp --reflink=always It hugely speedup file copying as it skips real file IO, and only inserts data pointers. And since you're using btrfs for your root, it's recommended to do the copy using rescue ISO. > i only see a command: btrfs subvolume delete do > the command need a part or the number, or can i delete it with snapper? Unfortunately I'm not a expert of snapper and its snapshots/subvolume layout. So you may need help from Jeff. Thanks, Qu
(In reply to Wenruo Qu from comment #33) > > > > Thank you! But which subvolume should i copy? > > I'm not familiar with openSUSE's snapshots/subvolumes layout. > > Maybe Jeff could provide some suggestion? > > > First delete than copy? > > Copy first, then delete. > > > I got to many? > > The corruption happens between snapshot 596 and 598. > If you coud provide the timestamp of that two snapshots, we could get a > basic idea of when the corruption happens (we're just curious when the > corruption happens). > > > What is a reflink, > > # cp --reflink=always > > It hugely speedup file copying as it skips real file IO, and only inserts > data pointers. > > And since you're using btrfs for your root, it's recommended to do the copy > using rescue ISO. > > > i only see a command: btrfs subvolume delete do > > the command need a part or the number, or can i delete it with snapper? > > Unfortunately I'm not a expert of snapper and its snapshots/subvolume layout. > So you may need help from Jeff. > > Thanks, > Qu is there a possibility to show the timestamp? snapper shows the date and the time, but the two numbers aren´t available anymore in snapper. unfortunaltyl i haven´t any idea about filesystems.
> is there a possibility to show the timestamp? snapper shows the date and the > time, but the two numbers aren´t available anymore in snapper. unfortunaltyl > i haven´t any idea about filesystems. You could just use "ls -alhd" to show the mtime of that directory. Thanks, Qu
(In reply to Wenruo Qu from comment #35) > > is there a possibility to show the timestamp? snapper shows the date and the > > time, but the two numbers aren´t available anymore in snapper. unfortunaltyl > > i haven´t any idea about filesystems. > > You could just use "ls -alhd" to show the mtime of that directory. > > Thanks, > Qu ls -alhd 270 drwxr-xr-x 1 root root 16 2. Jun 2017 270 ls -alhd 264 drwxr-xr-x 1 root root 0 2. Jun 2017 264 I assume, that i made an dist-upgrade, maybe with this upgrade there was a change from ext4 to btrfs. I found out by chance, that i have btrfs a few month ago, when my ssd was full because of the snapshots. How can i delete it? Wih the id it doesn´t work: btrfs subvolume delete 2850 ERROR: cannot access subvolume 2850: No such file or directory The same here: btrfs subvolume delete @/.snapshots/694/snapshot ERROR: cannot access subvolume @/.snapshots/694/snapshot: No such file or directory I can delete it with snapper snapper delete 694 But this: D 598 gen 355469 top level 258 path @/.snapshots/270/snapshot snapper delete 270, can´t find the file.
> > How can i delete it? > Wih the id it doesn´t work: > > btrfs subvolume delete 2850 > ERROR: cannot access subvolume 2850: No such file or directory Please refer "btrfs-subvolume"(8) man page. "btrfs subvolume delete" doesn't support subvolumme id. > > The same here: > > btrfs subvolume delete @/.snapshots/694/snapshot > ERROR: cannot access subvolume @/.snapshots/694/snapshot: No such file or > directory That '@' is not a indicator. You should use "btrfs subvolume delete /.snapshots/694/snapshot" Thanks, Qu > > I can delete it with snapper snapper delete 694 > But this: > > D 598 gen 355469 top level 258 path @/.snapshots/270/snapshot > > snapper delete 270, can´t find the file.
During the weekend i found out, that with snapper you can undo changes between two snapshots. But i tried do do it between snapshot 268..270, but snapper can´t found them. snapper -v undochange xxx..xxx https://www.suse.com/documentation/sled11/book_sle_admin/data/sec_snapper_auto.html
I managed to delete the subvolumes, but the error still exists. I can´t boot with kernel .19. Can i try to do btrfs check --repair or is it better to make a new instalation?
(In reply to Tom Hanker from comment #39) > I managed to delete the subvolumes, but the error still exists. I can´t boot > with kernel .19. Can i try to do btrfs check --repair or is it better to > make a new instalation? You have to do the btrfs check --readonly -> delete corrupted subvolumes -> btrfs check --readonly loop until all corrupted filesystems are deleted. However the problem is, your current root fs also contains the corrupted leaf, through all the snapshots. That's why I'm asking you to copy the contents of your root fs to a new subvolume, to avoid inheriting the corrupted leaf. If above workaround is too complex, you could do a new installtion. Thanks, Qu
Created attachment 786911 [details] btrfs check output, in text format. Please upload text in text files instead of open office docs.
As best I can tell, it looks like btrfs check --repair can't deal with this file system yet. We'd view that as a bug since you've encountered corruption it can't handle. Before you remove the broken snapshots, could you do: btrfs-image <srcdev> <some file> while the file system is unmounted and post the results somewhere so we can download it? It won't share any of your data but it will share your filenames. Normally we'd suggest using the "sanitize" option to scrub the filenames but since this is specific to directory entries, it wouldn't work to resolve the issue. <some file> can be a file on a different file system but it could also be "-" such that you could send it to another machine via SSH or something, e.g. btrfs-image <srcdev> - | ssh somehost "cat > btrfs.img" Then, once you've captured that, you can run: # snapper delete 270-694 The btrfs check output shows that the corrupted directory entry exists in those snapshots but not the root volume, so you should be ok without having to rebuild your file system from nothing. It will remove those snapshots.
(In reply to Jeff Mahoney from comment #42) > As best I can tell, it looks like btrfs check --repair can't deal with this > file system yet. We'd view that as a bug since you've encountered > corruption it can't handle. Before you remove the broken snapshots, could > you do: > > btrfs-image <srcdev> <some file> while the file system is unmounted and post > the results somewhere so we can download it? It won't share any of your > data but it will share your filenames. Normally we'd suggest using the > "sanitize" option to scrub the filenames but since this is specific to > directory entries, it wouldn't work to resolve the issue. > > <some file> can be a file on a different file system but it could also be > "-" such that you could send it to another machine via SSH or something, e.g. > > btrfs-image <srcdev> - | ssh somehost "cat > btrfs.img" > > Then, once you've captured that, you can run: > > # snapper delete 270-694 > > The btrfs check output shows that the corrupted directory entry exists in > those snapshots but not the root volume, so you should be ok without having > to rebuild your file system from nothing. It will remove those snapshots. Thank you for your help. I tried it yesterday and someway the whole system crasched. Then i decide to make a clean install. Now all is o.k. The new Kernel is working.
Since no further update, close this bug.