fsarchiver taking ages to backup and restore

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0















  • Using Linux Mint 19.1 bootable USB


  • Ext4 filesystem


  • Processor 8600k


  • Ram 16gb


  • By default fsarchiver uses zstd compression


Earlier when I used the following two commands, each command individually took maximum 5 minutes to complete.



fsarchiver -v -j6 savefs /backup/backup-fsa/backup01.fsa /dev/sda2
fsarchiver -v -j6 restfs /backup/backup-fsa/backup01.fsa id=0,dest=/dev/sda2


Now, each command takes couple of hours to complete. I noticed that mainly one core and 20% of my ram is used during the process.



Update 1:



Just to make sure, dd works fine. It makes the image fast. So, I do not think there is a hardware bottleneck. I think I am doing something wrong with the command.










share|improve this question




























    0















    • Using Linux Mint 19.1 bootable USB


    • Ext4 filesystem


    • Processor 8600k


    • Ram 16gb


    • By default fsarchiver uses zstd compression


    Earlier when I used the following two commands, each command individually took maximum 5 minutes to complete.



    fsarchiver -v -j6 savefs /backup/backup-fsa/backup01.fsa /dev/sda2
    fsarchiver -v -j6 restfs /backup/backup-fsa/backup01.fsa id=0,dest=/dev/sda2


    Now, each command takes couple of hours to complete. I noticed that mainly one core and 20% of my ram is used during the process.



    Update 1:



    Just to make sure, dd works fine. It makes the image fast. So, I do not think there is a hardware bottleneck. I think I am doing something wrong with the command.










    share|improve this question


























      0












      0








      0








      • Using Linux Mint 19.1 bootable USB


      • Ext4 filesystem


      • Processor 8600k


      • Ram 16gb


      • By default fsarchiver uses zstd compression


      Earlier when I used the following two commands, each command individually took maximum 5 minutes to complete.



      fsarchiver -v -j6 savefs /backup/backup-fsa/backup01.fsa /dev/sda2
      fsarchiver -v -j6 restfs /backup/backup-fsa/backup01.fsa id=0,dest=/dev/sda2


      Now, each command takes couple of hours to complete. I noticed that mainly one core and 20% of my ram is used during the process.



      Update 1:



      Just to make sure, dd works fine. It makes the image fast. So, I do not think there is a hardware bottleneck. I think I am doing something wrong with the command.










      share|improve this question
















      • Using Linux Mint 19.1 bootable USB


      • Ext4 filesystem


      • Processor 8600k


      • Ram 16gb


      • By default fsarchiver uses zstd compression


      Earlier when I used the following two commands, each command individually took maximum 5 minutes to complete.



      fsarchiver -v -j6 savefs /backup/backup-fsa/backup01.fsa /dev/sda2
      fsarchiver -v -j6 restfs /backup/backup-fsa/backup01.fsa id=0,dest=/dev/sda2


      Now, each command takes couple of hours to complete. I noticed that mainly one core and 20% of my ram is used during the process.



      Update 1:



      Just to make sure, dd works fine. It makes the image fast. So, I do not think there is a hardware bottleneck. I think I am doing something wrong with the command.







      command-line linux-mint compression fsarchiver






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Jan 6 at 7:49







      blueray

















      asked Jan 6 at 3:51









      bluerayblueray

      1336




      1336




















          1 Answer
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          Since neither RAM nor CPU are bottomed out the culprit could be related to



          1. having much more data (so that more stuff has to be copied),

          2. the disks themselves (being nearly full or using the same bus for reads and writes after moving hardware around), or

          3. the connection to /backup (if it's a remote filesystem or an external disk accidentally connected to a USB 2 port).





          share|improve this answer























          • Is there a possibility that there is a bug in fsarchiver? Or, are there any params using which I can speed up the process?

            – blueray
            Jan 6 at 7:21











          • Sure, have a look in the fsarchiver bug tracker, man fsarchiver or fsarchiver --help. I've not even heard of this tool before.

            – l0b0
            Jan 6 at 7:33











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          1 Answer
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          active

          oldest

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          active

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          active

          oldest

          votes









          0














          Since neither RAM nor CPU are bottomed out the culprit could be related to



          1. having much more data (so that more stuff has to be copied),

          2. the disks themselves (being nearly full or using the same bus for reads and writes after moving hardware around), or

          3. the connection to /backup (if it's a remote filesystem or an external disk accidentally connected to a USB 2 port).





          share|improve this answer























          • Is there a possibility that there is a bug in fsarchiver? Or, are there any params using which I can speed up the process?

            – blueray
            Jan 6 at 7:21











          • Sure, have a look in the fsarchiver bug tracker, man fsarchiver or fsarchiver --help. I've not even heard of this tool before.

            – l0b0
            Jan 6 at 7:33
















          0














          Since neither RAM nor CPU are bottomed out the culprit could be related to



          1. having much more data (so that more stuff has to be copied),

          2. the disks themselves (being nearly full or using the same bus for reads and writes after moving hardware around), or

          3. the connection to /backup (if it's a remote filesystem or an external disk accidentally connected to a USB 2 port).





          share|improve this answer























          • Is there a possibility that there is a bug in fsarchiver? Or, are there any params using which I can speed up the process?

            – blueray
            Jan 6 at 7:21











          • Sure, have a look in the fsarchiver bug tracker, man fsarchiver or fsarchiver --help. I've not even heard of this tool before.

            – l0b0
            Jan 6 at 7:33














          0












          0








          0







          Since neither RAM nor CPU are bottomed out the culprit could be related to



          1. having much more data (so that more stuff has to be copied),

          2. the disks themselves (being nearly full or using the same bus for reads and writes after moving hardware around), or

          3. the connection to /backup (if it's a remote filesystem or an external disk accidentally connected to a USB 2 port).





          share|improve this answer













          Since neither RAM nor CPU are bottomed out the culprit could be related to



          1. having much more data (so that more stuff has to be copied),

          2. the disks themselves (being nearly full or using the same bus for reads and writes after moving hardware around), or

          3. the connection to /backup (if it's a remote filesystem or an external disk accidentally connected to a USB 2 port).






          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Jan 6 at 5:32









          l0b0l0b0

          27.9k17118246




          27.9k17118246












          • Is there a possibility that there is a bug in fsarchiver? Or, are there any params using which I can speed up the process?

            – blueray
            Jan 6 at 7:21











          • Sure, have a look in the fsarchiver bug tracker, man fsarchiver or fsarchiver --help. I've not even heard of this tool before.

            – l0b0
            Jan 6 at 7:33


















          • Is there a possibility that there is a bug in fsarchiver? Or, are there any params using which I can speed up the process?

            – blueray
            Jan 6 at 7:21











          • Sure, have a look in the fsarchiver bug tracker, man fsarchiver or fsarchiver --help. I've not even heard of this tool before.

            – l0b0
            Jan 6 at 7:33

















          Is there a possibility that there is a bug in fsarchiver? Or, are there any params using which I can speed up the process?

          – blueray
          Jan 6 at 7:21





          Is there a possibility that there is a bug in fsarchiver? Or, are there any params using which I can speed up the process?

          – blueray
          Jan 6 at 7:21













          Sure, have a look in the fsarchiver bug tracker, man fsarchiver or fsarchiver --help. I've not even heard of this tool before.

          – l0b0
          Jan 6 at 7:33






          Sure, have a look in the fsarchiver bug tracker, man fsarchiver or fsarchiver --help. I've not even heard of this tool before.

          – l0b0
          Jan 6 at 7:33


















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