How to resize main filesystem Announcing the arrival of Valued Associate #679: Cesar Manara ...

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How to resize main filesystem



Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 23, 2019 at 23:30 UTC (7:30pm US/Eastern)
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on my centos server I mounted a new volume /dev/sdb. I would like to add space to root filesystem /dev/vda1.



[user@prod current]$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/vda1 30G 11G 18G 37% /
devtmpfs 488M 0 488M 0% /dev
tmpfs 497M 0 497M 0% /dev/shm
tmpfs 497M 50M 447M 11% /run
tmpfs 497M 0 497M 0% /sys/fs/cgroup
tmpfs 100M 0 100M 0% /run/user/1000
/dev/sdb 50G 53M 47G 1% /mnt/volume_nyc3_01



Is there any way to decrease /dev/sdb and increase /dev/vda1? If possible without losing data on /dev/vda1.










share|improve this question





























    2















    on my centos server I mounted a new volume /dev/sdb. I would like to add space to root filesystem /dev/vda1.



    [user@prod current]$ df -h
    Filesystem Size Used Avail Use% Mounted on
    /dev/vda1 30G 11G 18G 37% /
    devtmpfs 488M 0 488M 0% /dev
    tmpfs 497M 0 497M 0% /dev/shm
    tmpfs 497M 50M 447M 11% /run
    tmpfs 497M 0 497M 0% /sys/fs/cgroup
    tmpfs 100M 0 100M 0% /run/user/1000
    /dev/sdb 50G 53M 47G 1% /mnt/volume_nyc3_01



    Is there any way to decrease /dev/sdb and increase /dev/vda1? If possible without losing data on /dev/vda1.










    share|improve this question

























      2












      2








      2








      on my centos server I mounted a new volume /dev/sdb. I would like to add space to root filesystem /dev/vda1.



      [user@prod current]$ df -h
      Filesystem Size Used Avail Use% Mounted on
      /dev/vda1 30G 11G 18G 37% /
      devtmpfs 488M 0 488M 0% /dev
      tmpfs 497M 0 497M 0% /dev/shm
      tmpfs 497M 50M 447M 11% /run
      tmpfs 497M 0 497M 0% /sys/fs/cgroup
      tmpfs 100M 0 100M 0% /run/user/1000
      /dev/sdb 50G 53M 47G 1% /mnt/volume_nyc3_01



      Is there any way to decrease /dev/sdb and increase /dev/vda1? If possible without losing data on /dev/vda1.










      share|improve this question














      on my centos server I mounted a new volume /dev/sdb. I would like to add space to root filesystem /dev/vda1.



      [user@prod current]$ df -h
      Filesystem Size Used Avail Use% Mounted on
      /dev/vda1 30G 11G 18G 37% /
      devtmpfs 488M 0 488M 0% /dev
      tmpfs 497M 0 497M 0% /dev/shm
      tmpfs 497M 50M 447M 11% /run
      tmpfs 497M 0 497M 0% /sys/fs/cgroup
      tmpfs 100M 0 100M 0% /run/user/1000
      /dev/sdb 50G 53M 47G 1% /mnt/volume_nyc3_01



      Is there any way to decrease /dev/sdb and increase /dev/vda1? If possible without losing data on /dev/vda1.







      linux filesystems






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked 6 hours ago









      mike927mike927

      1111




      1111






















          1 Answer
          1






          active

          oldest

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          5














          If we consider /dev/vda and /dev/sdb as different (physical) disks, this is not easily achievable, to the point that it would be much easier to reinstall the server from scratch and put / into a LVM volume from the start.



          If absolutely necessary, this could be done with a lengthy downtime and lots of knowledge about what you need to do. It would be quite error-prone though and I would not recommend to even try.



          /dev/vda suggests this is some kind of virtual system. Depending on what the underlying system allows, it might be possible to resize the disk image providing /dev/vda (and if necessary, delete/shrink the image providing /dev/sdb). Talk to your admin/provider. In that case, after the system picks of the larger size of /dev/vda, you could extend /dev/vda1 and then grow the / file system.






          share|improve this answer
























          • Thank you for your reply. Not sure if you are familiar with digitalocean hosting but /dev/sdb it is just an additional volume I bought to my app. As it is an separate space I need to pass it to my root filesystem. Not sure if it is possible at all.

            – mike927
            2 hours ago












          Your Answer








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          1 Answer
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          1 Answer
          1






          active

          oldest

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          active

          oldest

          votes






          active

          oldest

          votes









          5














          If we consider /dev/vda and /dev/sdb as different (physical) disks, this is not easily achievable, to the point that it would be much easier to reinstall the server from scratch and put / into a LVM volume from the start.



          If absolutely necessary, this could be done with a lengthy downtime and lots of knowledge about what you need to do. It would be quite error-prone though and I would not recommend to even try.



          /dev/vda suggests this is some kind of virtual system. Depending on what the underlying system allows, it might be possible to resize the disk image providing /dev/vda (and if necessary, delete/shrink the image providing /dev/sdb). Talk to your admin/provider. In that case, after the system picks of the larger size of /dev/vda, you could extend /dev/vda1 and then grow the / file system.






          share|improve this answer
























          • Thank you for your reply. Not sure if you are familiar with digitalocean hosting but /dev/sdb it is just an additional volume I bought to my app. As it is an separate space I need to pass it to my root filesystem. Not sure if it is possible at all.

            – mike927
            2 hours ago
















          5














          If we consider /dev/vda and /dev/sdb as different (physical) disks, this is not easily achievable, to the point that it would be much easier to reinstall the server from scratch and put / into a LVM volume from the start.



          If absolutely necessary, this could be done with a lengthy downtime and lots of knowledge about what you need to do. It would be quite error-prone though and I would not recommend to even try.



          /dev/vda suggests this is some kind of virtual system. Depending on what the underlying system allows, it might be possible to resize the disk image providing /dev/vda (and if necessary, delete/shrink the image providing /dev/sdb). Talk to your admin/provider. In that case, after the system picks of the larger size of /dev/vda, you could extend /dev/vda1 and then grow the / file system.






          share|improve this answer
























          • Thank you for your reply. Not sure if you are familiar with digitalocean hosting but /dev/sdb it is just an additional volume I bought to my app. As it is an separate space I need to pass it to my root filesystem. Not sure if it is possible at all.

            – mike927
            2 hours ago














          5












          5








          5







          If we consider /dev/vda and /dev/sdb as different (physical) disks, this is not easily achievable, to the point that it would be much easier to reinstall the server from scratch and put / into a LVM volume from the start.



          If absolutely necessary, this could be done with a lengthy downtime and lots of knowledge about what you need to do. It would be quite error-prone though and I would not recommend to even try.



          /dev/vda suggests this is some kind of virtual system. Depending on what the underlying system allows, it might be possible to resize the disk image providing /dev/vda (and if necessary, delete/shrink the image providing /dev/sdb). Talk to your admin/provider. In that case, after the system picks of the larger size of /dev/vda, you could extend /dev/vda1 and then grow the / file system.






          share|improve this answer













          If we consider /dev/vda and /dev/sdb as different (physical) disks, this is not easily achievable, to the point that it would be much easier to reinstall the server from scratch and put / into a LVM volume from the start.



          If absolutely necessary, this could be done with a lengthy downtime and lots of knowledge about what you need to do. It would be quite error-prone though and I would not recommend to even try.



          /dev/vda suggests this is some kind of virtual system. Depending on what the underlying system allows, it might be possible to resize the disk image providing /dev/vda (and if necessary, delete/shrink the image providing /dev/sdb). Talk to your admin/provider. In that case, after the system picks of the larger size of /dev/vda, you could extend /dev/vda1 and then grow the / file system.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 4 hours ago









          SvenSven

          87.8k10148200




          87.8k10148200













          • Thank you for your reply. Not sure if you are familiar with digitalocean hosting but /dev/sdb it is just an additional volume I bought to my app. As it is an separate space I need to pass it to my root filesystem. Not sure if it is possible at all.

            – mike927
            2 hours ago



















          • Thank you for your reply. Not sure if you are familiar with digitalocean hosting but /dev/sdb it is just an additional volume I bought to my app. As it is an separate space I need to pass it to my root filesystem. Not sure if it is possible at all.

            – mike927
            2 hours ago

















          Thank you for your reply. Not sure if you are familiar with digitalocean hosting but /dev/sdb it is just an additional volume I bought to my app. As it is an separate space I need to pass it to my root filesystem. Not sure if it is possible at all.

          – mike927
          2 hours ago





          Thank you for your reply. Not sure if you are familiar with digitalocean hosting but /dev/sdb it is just an additional volume I bought to my app. As it is an separate space I need to pass it to my root filesystem. Not sure if it is possible at all.

          – mike927
          2 hours ago


















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