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ZFS Mirror over one large disk and a RAID0 of two small disks
Announcing the arrival of Valued Associate #679: Cesar Manara
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Why I closed the “Why is Kali so hard” questionZFS Mirror on same drive for redundancy?ZFS: Mirror required on backup system?Software RAID using network shares as drivesCombining SSD + HDD into single fast, large partition?ZFS - two pools, one root.Why ZFS scrub does not complete?btrfs on two physical drives: md raid 10 or btrfs raid 1Ubuntu: RAID 10 degrades to RAID 0 after reboot?How full is my ZFS pool? (not sure how to read command output)mdadm raid10 recovery - is this filesystem corrupted? Is it fixable?
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You have: two disks of size X and one of size 2X.
You want: zpool with mirror-like redundancy of size 2X
Concatenation of the two X drives is straightforward with ZFS. But I found no way to mirror the resulting vdev (size 2X) with another 2X disk with ZFS's in-house means.
These (more or less unelegant) solutions came to my mind:
- Use OS tools (mdadm for Linux, gstripe for FreeBSD) to connect the two X drives to a single physical device that can be mirrored with the 2X one. But I am uneasy with the additional complexity, platform-dependence, and losing bare-metal benefits of ZFS.
- Subdivide the 2X drive into two partitions and create a RAID10 equivalent with four members via
zpool create tank mirror /dev/Xone /dev/2Xpart1 mirror /dev/Xtwo /dev/2Xpart2where the striped partitions are scattered over physically contiguous hardware.
raid zfs
asked 2 hours ago
H. WeirauchH. Weirauch
161
add a comment |
You have: two disks of size X and one of size 2X.
You want: zpool with mirror-like redundancy of size 2X
Concatenation of the two X drives is straightforward with ZFS. But I found no way to mirror the resulting vdev (size 2X) with another 2X disk with ZFS's in-house means.
These (more or less unelegant) solutions came to my mind:
- Use OS tools (mdadm for Linux, gstripe for FreeBSD) to connect the two X drives to a single physical device that can be mirrored with the 2X one. But I am uneasy with the additional complexity, platform-dependence, and losing bare-metal benefits of ZFS.
- Subdivide the 2X drive into two partitions and create a RAID10 equivalent with four members via
zpool create tank mirror /dev/Xone /dev/2Xpart1 mirror /dev/Xtwo /dev/2Xpart2where the striped partitions are scattered over physically contiguous hardware.
raid zfs
asked 2 hours ago
H. WeirauchH. Weirauch
161
add a comment |
You have: two disks of size X and one of size 2X.
You want: zpool with mirror-like redundancy of size 2X
Concatenation of the two X drives is straightforward with ZFS. But I found no way to mirror the resulting vdev (size 2X) with another 2X disk with ZFS's in-house means.
These (more or less unelegant) solutions came to my mind:
- Use OS tools (mdadm for Linux, gstripe for FreeBSD) to connect the two X drives to a single physical device that can be mirrored with the 2X one. But I am uneasy with the additional complexity, platform-dependence, and losing bare-metal benefits of ZFS.
- Subdivide the 2X drive into two partitions and create a RAID10 equivalent with four members via
zpool create tank mirror /dev/Xone /dev/2Xpart1 mirror /dev/Xtwo /dev/2Xpart2where the striped partitions are scattered over physically contiguous hardware.
raid zfs
asked 2 hours ago
H. WeirauchH. Weirauch
161
You have: two disks of size X and one of size 2X.
You want: zpool with mirror-like redundancy of size 2X
Concatenation of the two X drives is straightforward with ZFS. But I found no way to mirror the resulting vdev (size 2X) with another 2X disk with ZFS's in-house means.
These (more or less unelegant) solutions came to my mind:
- Use OS tools (mdadm for Linux, gstripe for FreeBSD) to connect the two X drives to a single physical device that can be mirrored with the 2X one. But I am uneasy with the additional complexity, platform-dependence, and losing bare-metal benefits of ZFS.
- Subdivide the 2X drive into two partitions and create a RAID10 equivalent with four members via
zpool create tank mirror /dev/Xone /dev/2Xpart1 mirror /dev/Xtwo /dev/2Xpart2where the striped partitions are scattered over physically contiguous hardware.
raid zfs
raid zfs
asked 2 hours ago
H. WeirauchH. Weirauch
161
asked 2 hours ago
H. WeirauchH. Weirauch
161
asked 2 hours ago
H. WeirauchH. Weirauch
161
asked 2 hours ago
H. WeirauchH. Weirauch
161
asked 2 hours ago
H. WeirauchH. Weirauch
161
161
add a comment |
add a comment |
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