Replace the faulted device, or use zpool clear to mark the device repaired. Unavail devices may also report as faulted in some scenarios. Aug 29, 2019 zpool add or zpool replace fails with cannot open. We have 2x zpools, one of which is made up of several disks. Looks like after the initial temporary failure, you may only have needed to do a zpool clear to clear the errors if you want to pretend that its a drive replacement, you probably need to clear the data off the drive first before you try readding it to the pool. Run the driver verifier against any new or suspect drivers. This section describes how to determine device failure types, clear transient. If a device cannot be opened, it displays the unavail state in the zpool status output. A faulted pool has corrupted metadata, or one or more faulted devices, and. Aug 18, 2017 repeat this for each missing device and increment the number. The zpool remove command would complete but would not remove the device. Check to make sure any new hardware or software is properly installed. This state means that zfs was unable to open the device when the pool was first accessed, or the. The existing device cannot be part of a raidz configuration.
Once zfs does hit the mutated data, it im guessing might fault the drive again. Recently the disk that my syspool sits on started to lock up on my nexenta ncp server. Zfs on linux what to do when resilver takes very long. Thankfully, replacing a failed disk in a zfs zpool is remarkably simple if you know how.
After a fresh boot, zpool status now lists the pool as online but the faulted drive is reporting a cksum value of 2. Reads are not guaranteed to hit all mutations unless a scrub is done. I either need to be walked through what to or point in the right direction to find out on my own. If the loss of a device causes the pool to become faulted, or the device contains too many data errors in an nonredundant configuration, then the device cannot safely be. But if i want to import the existing, unavailable pool with zpool import dte dte was the name of the pool, i get the following error.
Either restore the affected device s and run zpool online, or ignore the intent log records by running zpool clear. After a disk is in the pool, that disk can then be configured as a quorum device. Online the device using zpool online or replace the device with zpool replace. Recently we had one of our proxmox machines suffer a failed disk drive. Removing disk from zfs pool permanently stack overflow. There are insufficient replicas for the pool to continue functioning. Seems that during several failover tests im left with a faultedunavailable zpool. Determine if the device needs to be replaced, and clear the errors using zpool clear or fmadm repaired, or replace the device with zpool replace. Replacing failed drive in zfs zpool on proxmox dec 12, 2016 5 minute read category. Manually marking the device repaired using zpool clear may allow some data to be recovered. A degraded pool is one in which one or more devices have failed, but. If this is a new installation, ask your hardware or software manufacturer for any windows updates you might need.
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 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. I would definitely recommend you glabel8 and create the zpool zdevs using the glabel devices instead to circumvent any future problems associated with device numbering. An attempt will be made to activate a hot spare if available. The first step is to examine the error counts in the zpool status output as follows. I normally shut down the server, turn off the enclosure, then turn it back on, and turn the server back on. Zfs zpool cache and log devices administration unixarena.
Sufficient replicas exist for the pool to continue functioning in a degraded state. I frequently experience random issues with my pool where one drive will be listed as faulted and the pool is degraded. Solved identify failed disk in freenas data storage. You will need to go with jlliagre suggestion or add two more disk in zpool as mirrors of two devices currently present. Destroy and recreate the pool from a backup source. Waiting for adminstrator intervention to fix the faulted pool.
Solaris operating system version 10 305 and later solaris x64x86 operating system version 10 305 and later opensolaris operating system version 2008. So i just rebooted the server, and the ad12 showed up. Spares are used in raid protected setup raid1,raidz etc. To clear error counters for raidz or mirrored devices, use the zpool clear. Use fmadm faulty to provide a more detailed view of this event. This was a bad place to be in, because the device was no longer usable, could not be removed, and would most likely prevent the pool from ever being exported and reimported again. My issue is were running solaris 10 on a hp dl380 g5 and i suspect the non native hardware is confusing things. Future errors may cause zfs to automatically fault the device. For example, if two disks in a fourway mirror are faulted, then either disk can be. The pool cannot be imported due to damaged devices or data.
Hot spare will not protect your data in case of of the disk in raid 0 zpool fails. How do i recover from a faulted zpool where one device is. Using zpool labelclear and sgdisk zapall was not sufficient to clear the disk entirely of zfs metadata. I decided to take this opportunity to set up a mirror to migrate the syspool rpool to another disk. The device has been offlined and marked as faulted. Once it integrates, you will be able to run zpool remove on any toplevel vdev, which will migrate its storage to a different device in the pool and add indirect mappings from the old location to the new one.
Find further repair instructions by using the zpool status x command. Jul 27, 20 oracle recommends to spread the zpool across the multiple disks to get the better performance and also its better to maintain the zpool under 80% usage. Do not add a disk that is currently configured as a quorum device to a zpool. Hardware maintenance to replace a hard drive with another device, run. If the zpool usage exceed more than 80%,then you can see the performance degradation on that zpool. Replace the faulted device, or use zpool clear to mark the device. Another check to ensure that zfs is following device changes before or after a hardware change even if the pool is exported is with zdb. Its not great if the vdev youre removing is already very full of data because then accesses to any of that data have to go through the. If the log shows a large number of scsi or fibre channel driver messages, then. A degraded pool is one in which one or more devices have failed, but the.
For some day one pool on one of my servers go in faulted state. I ran into a troublesome zfs bug several months ago where a pool with a log device became stuck. If that doesnt reveal the corrupting driver, try enabling special pool. Otherwise, disk drivers on platforms of different endianness will not recognize. Restoring the faulted configuration or corrupted data from a backup. After setting up the zpool again, the system failed to boot complaining that there was 2 zfs things forgot what the word was. One or more devices are faulted in response to io failures. Serverware 3 cluster mirror edition storage pool faulty. However, when i run zpool status l rpool it just lists a single disk. Now you can call zpool create with all existing devices and append the sparse files. Name state read write cksum test online 0 0 0 raidz20 online 0 0 0 wwn0x50014ee20589576f online 0 0 0 wwn0x50014ee259418099 online 0 0 0 wwn0x50014ee259481bfe online 0 0 0 wwn0x50014ee2594942f9 online 0 0 0.
Make sure the affected devices are connected, then run zpool clear. If a device is faulted, this field indicates whether the device is inaccessible or whether the data on the device is corrupted. If two disks in a fourway mirror are faulted, then either disk can be replaced. Resolving zfs storage device problems oracle solaris zfs.
Replacing or repairing a damaged device oracle solaris zfs. Review the following sections to resolve a missing, removed or faulted device. Zfs troubleshooting and data recovery zfs administration. Otherwise, disk drivers on platforms of different endianness will not recognize the disks. Understanding and resolving zfs disk failure documentation.
Determine if the device needs to be replaced, and clear the errors using zpool clear or replace the device with zpool replace. I also had this but with zfs on usb driver as backup on 6. Note that your device names will change to adax instead of adx. Repair the failures, which involves the following steps. If the output of zpool status shows a different device number from the current number assigned to the drive after it has been physically reconnected, and yet the pool still says its online, i wonder whether the pool will continue to say its online if you physically disconnect the disk again. Replacing the faulted or missing device and bring it online. Verifying the recovery by using the zpool statusx command. The actual pool creation can still fail due to insufficient privileges or device sharing. Each copy is validated against its checksum and corrected if it has become corrupted. To accelerate the zpool performance,zfs also provide options like log devices and cache devices. Solved zfs clear files with permanent errors system.
Apr 02, 20 seems that during several failover tests im left with a faulted unavailable zpool. After that, you should take the sparse files offline to prevent zfs from filling these up. If the device is undergoing resilvering, this field displays the current progress. Either restore the affected devices and run zpool online, or ignore the intent log records by running zpool clear.
Availability best practices using a mirrored zfs pool. The old driver failed with no commited tx,so i can not replace the failed disk. Looks like after the initial temporary failure, you may only have needed to do a zpool clear to clear the errors. This section describes how to determine device failure types, clear transient errors, and replace a device. If the log shows a large number of scsi or fibre channel driver messages, then this. After some digging, i found that zdb l devdevicename listed the guid taking it directly from the device, and not from the pool records, and using that guid enabled me to do the replacement actually i did a zpool offline followed by a zpool remove and then a zpool add, which worked perfectly. One or more devices are faulted in response to persistent errors. Adding a physical disk as a mirror to an existing zpool. Dec 11, 20 if the output of zpool status shows a different device number from the current number assigned to the drive after it has been physically reconnected, and yet the pool still says its online, i wonder whether the pool will continue to say its online if you physically disconnect the disk again. I may have a similar situation, i needed to change the partitions of the disk and basically wanted a fresh start on my disk.