The pool can still be used, but some features are unavailable. The pool will continue to function, possibly in a degraded state. The post describes steps to replace a failed disk in rpool for x86 based systems. Online the device using zpool online or replace the device with zpool replace. Zfs block size error on single disk in a mirror0 pool. To add the two new disks to the pool, you can use zpool add tank mirror sdb sdc but this will add the new pair as a mirror, and stripe it with the existing disk.
Splitting a mirrored zfs pool in zfs on linux utcc. Example 11 managing hot spares the following command creates a new pool with an available hot spare. Originally, zfs was proprietary, closedsource software developed internally by sun. Use fdisk to see partition of c0d0 and after cretae same on c0d1. Attach a second disk to configure a mirrored root pool. Adding a physical disk as a mirror to an existing zpool. First present a new disk to the server and rescan for the disk. I have two hard disks in ma server, but after installation i have only one. I want to add a disk to create a mirror, but it fails. To summarize, if you need to remove a disk from a pool and later add it back without requiring a full resilvering then the approach id recommend is. Attach the missing device and online it using zpool online. Or detach one of mirror disks, repartition with slice 0, attach. This operation is identical to attaching a device in a unmirrored storage pool. Iirc when i started playing with zfs, zpool create wouldnt work unless the disk had a gpt label.
The failed disks is automatically replaced by the spare device and administrator can replace the failed disks at later time. For information about replacing a disk in root pool, see how to replace a disk in the zfs root pool. This is shown in the below example, where you are replacing disk c1t1d0 in the pool named datapool with disk c1t2d0. For zfs, multiple disks will be configured as mirrors, so the disk you choose. Name state read write cksum geekpool degraded 0 0 0 mirror degraded 0 0 0 c1t12d0s1 online 0 0 0 c3t21d0s1 unavail 0 29 0 cannot open. I have a zpool consisting of 4 hard drives of which one died yesterday and now is not being recognized by the os or the bios anymore. I too had this problem and created a new lun and added to the zpool safe way and it works. Clonezilla is a free disk mirroring software which can be used for disk imaging and cloning. How to create a mirrored root pool post installation.
If you are attaching a disk to create a mirrored root pool, see how to create a mirrored root pool post installation. It comes in two types and can ensure that all your data remains safe even if the hard disk fails to boot. Check, that everything went well and wait until the resilvering is finished. Short term, you could mirror that last disk to remove it as a spof. Instead of using the zfs add command to add a second stripe to the pool, i could have instead used the attach option to create a two way mirror from the existing device. Breaking a zfs mirror solaris 11 notes of a systems.
If i did, i would have either made a 7tb pool of two mirrors, or put 4 disks in one mirror, then removed the old disk. If zfs is already telling you its a 4k disk, you shouldnt even need to set that sysctl, it should use 4k automatically. Log devices can be removed by using the zpool remove command. All is now good, so lets attach mirror our system disks.
Rightclick the primary drive with data on it, and select add mirror. By adding a disk to a pool, we mean expanding the pool size in the sense of striping in another disk or sets of mirroredraidz disks. Cannot create zpool using links in devdiskbyid issue. With solaris 11, oracle introduces the new zpool split command to split the zfs pool sparc x86. This comes in handy to increase the size of the rpool. Im trying to write some software that will work generically across different oss and systems running zfs, and using the wwn id to specify the drives is the best way to accomplish that. Name state read write cksum rpool online 0 0 0 c0t0d0s0 online 0 0 0 zpool attach wont work. Similarly, you cannot modify an exiting raidzraidz2 vdev. By attaching a disk to an existing disk, we mean attaching it to its mirror you can attach more than one disk to a mirror. How to increase rpool size on solaris 11 requires a reboot.
The mirrored log device in the previous example can be removed by specifying the mirror1 argument. Below is how i was able to mirror the os and migrate to a new syspool disk with out taking any downtime. You should also use diskgptlabels whenever possible. Once the pool is created, check zpool status just to make sure you dont see the same warning. Feb 16, 2012 i then wanted to mirror each disk to create a raid10 like pool however this is what i got when trying to attach the first mirror. If you did not create a mirrored zfs root pool during installation, you can easily create one after the installation. As shown in the output below, c0t1d0 need to be replaced as it is having a lot of errors.
Designating a device as a hot spare means that the device is not an active device in a pool, but if an active device in the pool fails, the. The correct disk labeling and the boot blocks are applied. Then you can use zfs sendrecv to migrate the data over. Can i create virtual disk from zpool on solaris 11. Adding devices to a storage pool oracle help center. You can use the zpool split command to detach disks from a mirrored zfs storage pool to create a new pool with one of the detached disks. Click yes to convert the basic disks to dynamic disks, which. Zfs didnt automatically pick it up and add to the zpool. Data will be copied from disk2 to disk3 in this case. You would need to use the zpool attach command to append the disks to the existing vdev, but you cant use a mirroredpair to back a single disk, you would have to add a new 2tb disk to make it a mirrored pair. Strange is, after this command the new disk sdc is now a zfs member. In addition to the zpool add command, you can use the zpool attach command to add a new device to an existing mirrored or nonmirrored device. So we will need to attach the disk as a mirror of c8t0d0s0. It provides system deployment, recovery, baremetal backup, image encryption and supports many file systems.
You can also add a spare disk to the zfs pool using the below command, by adding a spare device to a zfs pool. We attach disk3 to the existing disk in the mirror. In case x86, you need create solaris partitions on disk d1. Introduction when installing freebsd on a disk the availability of your system hinges on the correct operation of that disk. Attach 10tb drive as a mirror to the 6tb disk, like so. Hi i had detached the mirror c1t1d0s6 from the zpool zones. You have to specify also zpool to which you want to add disk. Adding devices to a storage pool managing zfs file. Because the drive was used previously, it does have partitions on it. Finally destroy the old pool and attach the old disk to the new pool. I tried to dry run zpool add n mypool c0t1d0s7 mirror.
The different was that add created a striped zpool raid0 across all vdevs and attach created a mirrored pool raid1 across all vdevs. This guide describes adding a zfs mirror drive to an existing zfs zpool for improved availability read. Adding a mirror to a device in a zfs pool prefetch. This is a handy command if you want a threeway mirror but dont have all three drives to start with you can get the ball rolling with a 2way mirror and add the third drive down the track. Solaris 11 creating and maintaining zfs pools the urban penguin. Zil zfs intent log drives can be added to a zfs pool to speed up the write capabilities of any level of zfs raid. Its look like you system work in some vrtual environment. The hard drive related project today is setting up a zfs mirror on my desktop which will contain my home directory. Jun 10, 20 attach replacement to the degraded vdev. Does anyone know how to add the device and create mirror to existing pool. Zfs zpool attach no such pool or dataset the freebsd forums. Setting up a zfs mirror 9 minute read lately i have been performing upgrades to the hard drives in my computers.
This will require that you have free space in rpool for such actions. I wanted to replace a disk and ended up detaching one disk in a mirror leaving a single remaining disk. Iirc for a singledisk pool to be converted into a mirror you only specify zpool attach. When i tried to attach it back, the resilvering is done with the below output.
The zfs hot spares feature enables you to identify disks that can be used to replace a failed or faulted device in one or more storage pools. Copy the smi label from c0d0 to c0d1 and use zpool attach f rpool c0d0s0 c0d1s0 instead. Sep 21, 2012 sometimes you may wish to expand a twoway mirror to a threeway mirror, or to make a basic single drive vdev into a mirror to do this we use the zpool attach command. Zfs is a combined file system and logical volume manager designed by sun microsystems. Zfs replacing all disks in a zfs mirror without taking it. The pool is formatted using an older on disk format. By default, a zpool split operation on a mirrored pool detaches the last disk for the newly created pool. The zpool utility controls the operation of the pool and deals with adding, removing.
Zfs zpool attach no such pool or dataset the freebsd. Because you issued zpool attach f rpool c0d0 c0d1 first, zfs would have put an efi label on the c0d1 disk which is why the second command failed. Name state read write cksum mypool online 0 0 0 ada0p3 online 0 0 0 errors. Installing a zfs root file system initial installation. Ive got some old disks id like to create a storage pool with just so i.
The virtual device that you add should have the same level of redundancy as the existing virtual device. You should also use disk gptlabels whenever possible. Formatting disks for zfs on linux servethehome forums. No fsck8 or similar file system consistency check program is required to. How to set up a zfs root pool mirror in oracle solaris 11 express. Hello, how to add mirrored disk to newly installed solaris 10. Mar 29, 2016 similarly, we can use attach command to attach disks to a mirrored or nonmirrored pool and detach command to detach disks from a mirrored pool. You can attach a log device to an existing log device to create a mirrored log device. Then the other disk s0 after rebuildresilver is complete be sure to check eeprom and primary domain for boot device specification. How to add a drive to a zfs mirror switched on tech design. Attaching and detaching devices in a storage pool in addition to the zpool add command, you can use the zpool attach command to add a new device to an existing mirrored or nonmirrored device. How to setup zfs filesystem on linux with zpool command.
However, you can change the level of redundancy by using the f option. Ea14d367371a114c827019c3e3f51c2c device start end sectors size type devsdb1 2048 1953507327. How to replace a disk under zfs in solaris the geek diary. Since cfgadm only knows about hardware, not software slices. You will have to replicate the current zpool devices partition table to the device you want to attach and then randomize the unique guids of the partitions should be two. This disk space is immediately available to all datasets in the pool. Jun 06, 2006 sufficient replicas exist for the pool to continue functioning in a degraded state. This should be possible with the zpool attach and zpool detach command. It writes the metadata for a file to a very fast ssd drive to increase the write throughput of the system.
Upgrade the single disk stripe vdev ada0p3 to a mirror by attaching ada1p3. Zfs software raidz1, raidz2, raidz3 distributed parity based raid. You can only add new vdevs, and you attach detach mirror disks. Name state read write cksum test degraded 0 0 0 mirror degraded 0 0 0 spare degraded 0 0 0. I mean, there mustve been a reason i started creating. The following screens will only allow you to install a zfs root system, not. Disk 1 above is the new disk i need to attach to expand my root pool give exporthome some extra space. A raid array of 2 hard drives and an ssd caching disk is. Once a spare replacement is initiated, a new spare vdev is created within the configuration that will remain there until the original device is replaced. Please note that you can also share the spare device among multiple zfs pools. In your case, it looks like you are creating mirror from 2 different controller disk unit so you have to create 1 lun in each and add to the zpool as mirror. Unfortunately i saw the problem only after the next reboot so now the drive label is missing and i cant replace the disk using the official instructions here and here.
How to remove a device from a zpool oracle community. To add a new virtual device to a pool, use the zpool add command. Attach the second disk as a mirror of the first, wait for resilver, remove the first disk, set the properties to autoexpand. A striped mirrored vdev zpool is very similar to raid10. Creating a new pool by splitting a mirrored zfs storage pool. The attach operation will cause a new top level mirror vdev virtual device to be created, and both devices will then be. It does have the additional feature of having checksuming to prevent silent data corruption, but essentially it is the same as raid10. Assuming c0t0d0 and c0t1d0 are mirrored in the zfs rpool, and c0t1d0 need to be replaced. Attaching a disk as a mirror is normally pretty easy, but this disk did not have any slices on it. How do i create a zpool using uuid or truly unique identifier. A zfs pool can be expanded at any time by adding new vdevs, including.
Zfs root mirroring, unable to attach mirror disk nik jan, 2012 2. Select disks on this screen you must select the disks for installing solaris software. Detach the failing drive from the pool call this drive failing remove failing from the chassis. There are basically two ways of growing a zfs pool. Iirc for a single disk pool to be converted into a mirror you only specify zpool attach. The problem is that c8t1d0 does not have a slice, so we can either create one using partition in format, or we can clone the slice from c8t0d0s0. The following command upgrades all zfs storage pools to the current version of the software.
How i replace a failedfailing hdd in a zfs storage pool. After a standard install of oracle solaris 11 express, well have our. Zfs root mirroring, unable to attach mirror disk oracle. If you are attaching a disk to create a mirrored root pool, see how to create a mirrored. Now, when we run the status subcommand we will see that the mirror has been resilvered or the data copied to the new drive.
Admittedly, i am a complete linux noob and my knowledge pertains to googling and copy and pasting commands into the terminal. Dont forget to setup boot code or anything like that. From posts on the zfs list, work to do this is happening, but i havent seen hopes for a release date. The new pool will have identical contents to the original mirrored zfs storage pool. Its done with zpool add which has basically the same syntax as zpool create does for specifying storage, and it works well for what it does zfs wont rebalance your stored data automatically, but it will start to write any new data to the new vdevs until the new vdev. Thus zpool create pool disk1 created a nonredundant pool with a single nonredundant vdev, and zpool attach pool disk2 would create a mirror pool made up of two nonredundant vdevs. When the disk fails, freebsd fails and your system will go down. Ive used zfs replace to swap drives in mirrors, but now its sdb and the old one was sdb so i dont know how thatd work. Mar 09, 2012 hi i had detached the mirror c1t1d0s6 from the zpool zones. For the replacement operation to be successful, the replacement device must be greater than or equal to the minimum size of all the devices in a mirror or raidz configuration. I have a 1 tb data disk no boot data created in the past, with a snapshot history. I have created zpool using c0t0d0s7 and its working fine i want to add c0t1d0s7 and set a mirror in the pool.
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