it also happans directly at the beginning of the restore, I created a new
backup and upon restore without even one file extracted...
On Tuesday, August 15, 2023 at 9:36:35 AM UTC+2 Konrad wrote:
> Hi Andreas,
>
> i`ve spent the last two weeks making quite a lot tests, unfortunetly
> without success.
>
> The setting of the minimum block size was already there when i recorded
> the backup initially. Nevertheless I excluded the miniumum statement and
> increased the maximum one. I always get the same error. What I forgot to
> mention, this happens always when the tapes get changed. I also tried to
> record a new backup without minimum/maximum or just a maximum blocksize.
> Nothing is changed, I get always the memory error.
> Any more hints what can be checked?
>
> Best Regards
>
> Konrad
>
> On Thursday, August 3, 2023 at 5:17:56 PM UTC+2 Andreas Rogge wrote:
>
>> Hi Konrad,
>>
>> I would remove the "Minimum Block Size" setting, it usually doesn't help
>> unless you require fixed block sizes (which you don't on an LTO drive).
>>
>> Your current setting for Maximum Block Size limits the buffer size to
>> 524288 bytes. Apparently your backup was written with a larger block
>> size, so reading the block fails.
>> While there is an automatic workaround being implemented in PR #1496
>> right now it will probably help to simply increase Maximum Block Size.
>> Maybe start with "Maximum Block Size = 1048576".
>>
>> Also, please note that in Bareos 23 the default block size will change
>> in a backwards-compatible manner so that there is no need to configure
>> block sizes anymore.
>>
>> Best Regards,
>> Andreas
>>
>> Am 03.08.23 um 14:58 schrieb 'Konrad' via bareos-users:
>> > Dear Andreas,
>> >
>> > this is the tape part of my config:
>> >
>> >
>> >
>> /----------------------------------------------------------------------------------------------------------------------------------------------------------------------/
>>
>>
>> > SD /etc/bareos/bareos-sd.d/device/FileStorage.conf
>> >
>> > /Device {/
>> > / Name = Ultrium3000/
>> > / Media Type = Tape/
>> > / Archive Device = /dev/nst0/
>> > / LabelMedia = no; # lets Bareos label unlabeled
>> media/
>> > / Random Access = no;/
>> > / AutomaticMount = yes; # when device opened, read it/
>> > / RemovableMedia = yes;/
>> > / AlwaysOpen = yes;/
>> > / Description = "Tape device. A connecting Director must have the same
>> > Name and MediaType."/
>> > / Maximum File Size = 50 G /
>> > / Maximum Spool Size = 500 G/
>> > / Minimum Block Size = 524288/
>> > / Maximum Block Size = 524288/
>> > / Spool Directory = /media/spool/
>> > /}/
>> > /
>> > /
>> > Director: /etc/bareos/bareos-dir.d/storage/File.conf
>> >
>> > /Storage {
>> > Name = Tape
>> > Address = localhost
>> > Password = "i won't tell"
>> > Device = Ultrium 3000
>> > Media Type = Tape
>> > Autochanger = no
>> > Maximum Concurrent Jobs =1
>> > }/
>> >
>> /----------------------------------------------------------------------------------------------------------------------------------------------------------------------/
>>
>>
>> > BTW: I am using Bareos 22, all services are located in a Proxmox
>> > VM, Ubuntu 22.04.2 LTS, PCIE passthrough of SAS card
>> >
>> > I added the last five lines of the device config to deal with
>> > performance issues according
>> > to https://www.bareos.com/whitepapers/optimizing-the-tape-speed.pdf
>> > /media/spool is a ramdisk, during that backup mounted with 20GB.
>> >
>> > Kind Regards
>> >
>> > Konrad
>> >
>> > On Saturday, July 29, 2023 at 4:48:57 PM UTC+2 Konrad wrote:
>> >
>> > Hi,
>> >
>> > i recently moved from disc to tape backup with bareos, so my
>> > experiences regarding restore are limited to testwise restoring some
>> > files and directories.
>> > Moving to another raid, I am trying to restore the whole backup to
>> > the new set of discs. Some folders restore ok, but when I want to
>> > restore the whole set, I encounter the following error:
>> > "bareos-sd JobId 18: Error: stored/block.cc:981 Read error on fd=5
>> > at file:blk 0:1 on device "Ultrium3000" (/dev/nst0). ERR=Nicht
>> > genügend Hauptspeicher verfügbar."
>> >
>> > I tried to research and think this is because of mismatching block
>> > size, but the block size is fixed in bareos. I use the same install
>> > to restore, that was used for backup.
>> >
>> > FileStorage.conf:
>> > /Minimum Block Size = 524288
>> > Maximum Block Size = 524288/
>> >
>> > I would appreciate to get some hints on how to get on. I am loosing
>> > faith in my backup :-(
>> >
>> > Konrad
>> >
>> > --
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>>
>> <
>> https://groups.google.com/d/msgid/bareos-users/ee777a79-9b58-498c-874d-33eb53f7bbb2n%40googlegroups.com?utm_medium=email&utm_source=footer>.
>>
>>
>>
>> --
>> Andreas Rogge [email protected]
>> Bareos GmbH & Co. KG Phone: +49 221-630693-86 <+49%20221%2063069386>
>> http://www.bareos.com
>>
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>>
>
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