Hi Libor,
sure, here is the output:
root@signer-0:/tmp/backup/keys/keys# strace -p 9781
strace: Process 9781 attached
restart_syscall(<... resuming interrupted restart_syscall ...>) = 1
accept4(16, NULL, NULL, SOCK_NONBLOCK) = 23
recvmsg(23, {msg_namelen=0}, MSG_DONTWAIT|MSG_NOSIGNAL) = -1 EAGAIN
(Resource temporarily unavailable)
poll([{fd=23, events=POLLIN}], 1, 5000) = 1 ([{fd=23, revents=POLLIN}])
recvmsg(23, {msg_name=NULL, msg_namelen=0,
msg_iov=[{iov_base="\1\20\0\vzone-backup\21\0\0\32\0\v/tmp/backup"...,
iov_len=262144}], msg_iovlen=1, msg_controllen=0, msg_flags=0},
MSG_DONTWAIT|MSG_NOSIGNAL) = 37
write(6, "2020-12-09T13:57:12+0000 info: c"..., 71) = 71
stat("/var/lib/knot/catalog/data.mdb", 0x7ffd0fb9f090) = -1 ENOENT (No
such file or directory)
stat("/var/lib/knot/journal/data.mdb", {st_mode=S_IFREG|0660,
st_size=9936896, ...}) = 0
stat("/var/lib/knot/keys/data.mdb", {st_mode=S_IFREG|0660,
st_size=45056, ...}) = 0
mkdir("/tmp/backup", 0770) = 0
openat(AT_FDCWD, "/tmp/backup/knot.backup.lockfile",
O_RDONLY|O_CREAT|O_EXCL, 0600) = 24
mkdir("/tmp/backup", 0750) = -1 EEXIST (File exists)
stat("/var/lib/knot/catalog/data.mdb", 0x7ffd0fb9efa0) = -1 ENOENT (No
such file or directory)
futex(0x7ffd0fb9f8e0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7ffd0fb9f890, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7ffd0fb9f8e4, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7ffd0fb9f890, FUTEX_WAKE_PRIVATE, 1) = 1
sendmsg(23, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\3",
iov_len=1}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 1
recvmsg(23, {msg_namelen=0}, MSG_DONTWAIT|MSG_NOSIGNAL) = -1 EAGAIN
(Resource temporarily unavailable)
poll([{fd=23, events=POLLIN}], 1, 5000) = 1 ([{fd=23, revents=POLLIN}])
recvmsg(23, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\0",
iov_len=262144}], msg_iovlen=1, msg_controllen=0, msg_flags=0},
MSG_DONTWAIT|MSG_NOSIGNAL) = 1
close(23) = 0
poll([{fd=16, events=POLLIN}], 1, -1
Thomas
On 09.12.20 13:34, libor.peltan wrote:
> Hi Thomas,
>
> would you try attaching `strace` to the running Knot and try the backup
> again, in order to see if some syscall(s) return error codes?
>
> Thanks much!
>
> Libor
>
> Dne 09. 12. 20 v 12:25 Thomas E. napsal(a):
>> Hi Libor,
>>
>>
>> # knotc -V
>> knotc (Knot DNS), version 3.0.2
>>
>>
>> Thomas
>>
>> On 09.12.20 12:16, libor.peltan wrote:
>>> Hi Thomas,
>>>
>>> aren't you using Knot version 3.0.0 (thus lower than 3.0.1) ?
>>>
>>> Libor
>>>
>>> Dne 09. 12. 20 v 11:39 Thomas E. napsal(a):
>>>> Hi Libor,
>>>>
>>>> I deleted the backup directory a few times, but I receive the same
>>>> error
>>>> every time:
>>>>
>>>> 2020-12-09T10:31:52+0000 info: control, received command 'zone-backup'
>>>> 2020-12-09T10:31:52+0000 warning: [xxx.] zone backup failed (not
>>>> exists)
>>>> 2020-12-09T10:31:52+0000 error: [xxx.] zone event 'backup/restore'
>>>> failed (not exists)
>>>> 2020-12-09T10:31:52+0000 warning: [yyy.] zone backup failed (not
>>>> exists)
>>>> 2020-12-09T10:31:52+0000 error: [yyy.] zone event 'backup/restore'
>>>> failed (not exists)
>>>>
>>>>
>>>>
>>>> One of the keys is the ZSK of zone xxx and the oterh the KSKS of zone
>>>> yyy.
>>>>
>>>>
>>>> root@signer-0:/# keymgr xxx list human | grep
>>>> 1fb3900b2e5ac72d30f927016ea4546ca561a5da
>>>>
>>>> 1fb3900b2e5ac72d30f927016ea4546ca561a5da ksk=no zsk=yes tag=39969
>>>> algorithm=7 size=1024 public-only=no pre-active=0
>>>> publish=-1M3D17h49m4s ready=0 active=-1M3D17h49m4s retire-active=0
>>>> retire=0 post-active=0 revoke=0 remove=0
>>>>
>>>>
>>>> root@signer-0:/# keymgr yyy list human | grep
>>>> 087cc573318e070befff1d9cbcf07e3b5cf5444d
>>>>
>>>> 087cc573318e070befff1d9cbcf07e3b5cf5444d ksk=yes zsk=no tag=37419
>>>> algorithm=7 size=2048 public-only=no pre-active=0
>>>> publish=-1M3D18h11m7s ready=-1M3D18h11m7s active=-26D12h49m4s
>>>> retire-active=0 retire=0 post-active=0 revoke=0 remove=0
>>>>
>>>> Best regards,
>>>> Thomas
>>>>
>>>> On 09.12.20 11:15, libor.peltan wrote:
>>>>> Hi Thomas,
>>>>>
>>>>> could you please try if this issue is reproducible: if whenever you
>>>>> attempt the backup (to a fresh empty target directory), it fails with
>>>>> "not exists"?
>>>>>
>>>>> Could you please check if the keys that happen to make it to the
>>>>> backup
>>>>> belong to the same zone, or that it's one from each zone? (You
>>>>> light use
>>>>> `keymgr list` to check which key ID belongs to which zone.)
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Libor
>>>>>
>>>>> Dne 08. 12. 20 v 21:36 Thomas napsal(a):
>>>>>> Hi Libor,
>>>>>>
>>>>>> sorry, I was really too unspecific.
>>>>>>
>>>>>> I'm hosting 2 zones. These 4 keys are on the production machine:
>>>>>>
>>>>>> root@signer-0:/var/lib/knot/keys/keys# ls -alh
>>>>>>
>>>>>>
>>>>>> -rw-r----- 1 knot knot 1,7K Nov 5 16:22
>>>>>> 087cc573318e070befff1d9cbcf07e3b5cf5444d.pem
>>>>>> -rw-r----- 1 knot knot 916 Nov 5 16:44
>>>>>> 1fb3900b2e5ac72d30f927016ea4546ca561a5da.pem
>>>>>> -rw-r----- 1 knot knot 916 Nov 5 16:22
>>>>>> 6ebb8eb3ec2ddaf150119b4bc11b47dcec91621a.pem
>>>>>> -rw-r----- 1 knot knot 1,7K Nov 5 16:44
>>>>>> d7e47e2909f4d5947d8fb8684cb79ed06feb4b0a.pem
>>>>>>
>>>>>>
>>>>>> Performing a backup with the following command:
>>>>>>
>>>>>> # knotc zone-backup +backupdir /tmp/backup
>>>>>>
>>>>>> Backup directory after performing the backup shows:
>>>>>>
>>>>>> root@signer-0:/tmp/backup/keys/keys# ls -ahl
>>>>>>
>>>>>> -rw-r----- 1 knot knot 1,7K Dez 8 20:21
>>>>>> 087cc573318e070befff1d9cbcf07e3b5cf5444d.pem
>>>>>> -rw-r----- 1 knot knot 916 Dez 8 20:21
>>>>>> 1fb3900b2e5ac72d30f927016ea4546ca561a5da.pem
>>>>>>
>>>>>> 2 keys are missing.
>>>>>>
>>>>>> Hhmm ok, there is an error in the log:
>>>>>>
>>>>>> 2020-12-08T20:26:43+0000 info: control, received command
>>>>>> 'zone-backup'
>>>>>> 2020-12-08T20:26:43+0000 warning: [xxx.] zone backup failed (not
>>>>>> exists)
>>>>>> 2020-12-08T20:26:43+0000 error: [xxx.] zone event 'backup/restore'
>>>>>> failed (not exists)
>>>>>> 2020-12-08T20:26:43+0000 warning: [yyy.] zone backup failed (not
>>>>>> exists)
>>>>>> 2020-12-08T20:26:43+0000 error: [yyy.] zone event 'backup/restore'
>>>>>> failed (not exists)
>>>>>>
>>>>>> I'm using the latest knot version.
>>>>>>
>>>>>>
>>>>>> Best regards,
>>>>>>
>>>>>> Thomas
>>>>>>
>>>>>>
>>>>>>
>>>>>> Am 08.12.20 um 16:56 schrieb libor.peltan:
>>>>>>> Hi Thomas,
>>>>>>>
>>>>>>> could you be more specific about "half of private keys were in the
>>>>>>> backup" ? How many were, how many weren't, and was there some
>>>>>>> obvious
>>>>>>> difference between them?
>>>>>>>
>>>>>>> Could you share the log snippets covering the backup and the restore
>>>>>>> procedures?
>>>>>>>
>>>>>>> Thanks,
>>>>>>>
>>>>>>> Libor
>>>>>>>
>>>>>>> Dne 08. 12. 20 v 16:48 Thomas E. napsal(a):
>>>>>>>> Hi (again),
>>>>>>>>
>>>>>>>> I was trying to backup and restore a server with the new knotc
>>>>>>>> zone-backup/restore command.
>>>>>>>>
>>>>>>>> I recognized that only half of the private keys were in the backup,
>>>>>>>> which leads to an error:
>>>>>>>>
>>>>>>>> 2020-12-08T14:44:00+0100 error: [xxx.] DNSSEC, failed to load
>>>>>>>> private
>>>>>>>> keys (not exists)
>>>>>>>> 2020-12-08T14:44:00+0100 error: [xxx.] DNSSEC, failed to load keys
>>>>>>>> (not
>>>>>>>> exists)
>>>>>>>>
>>>>>>>> Shouldn't the backup contain all private keys?
>>>>>>>>
>>>>>>>>
>>>>>>>> Thanks,
>>>>>>>> Thomas
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