Dell equallogis PS4100e (Missing Pages)

Question

Hi i was directed here by dell support as my equallogic is out of warranty. Currently i have 3 of 6 volumes that are offline due to 'missing pages". Are you able to guide me as to how i can force these volumes back online long enough to migrate my virtual machines to my EMC storage.

Thanks in Advance

dwilliam62 · Answer

Hello, I sent you a Private message. Please reply to that message when you can. Regards, Don

dwilliam62 · Answer

Hello, Since you are running a newer version of firmware In the GUI, on the volumes that are offline, There is an option to clear them or set them return an error when those blocks are accessed. I do it at the CLI. There are two options. Grpname>volume select VOLUMENAME lost+blocks mark-valid Grpname>volume select VOLUMENAME lost+blocks return-error Support-Production(VOLUMNAME> lost-blocks ? mark-valid - Marks lost cached blocks as valid. return-error - Sets the volume online but retains the lost blocks. If a n application attempts to read a lost block, an error wi ll occur. If a lost block is written, the block is marke d valid, and subsequent reads of the block will not caus e an error. I found with VMFS Datastores setting 'return-error' generally prevents VMware from mounting the volumes. Mark-valid will clear out those blocks. So once volume is online, you will need to check your VMs. chkdsk, fsck, etc.. Regards, Don

Yukonka · Answer

Hey there, 2025 here running some PS6210s. I have had a volume go offline with (pages missing) during a restore process. That said I have tried:

volume select VOLUMENAME
lost-blocks mark-valid
online
exit
volume show VOLUMENAME

as well as:
volume select VOLUMENAME
lost-blocks return-error
online
exit
volume show VOLUMENAME

IT doesn't appear to force the status to online. Any help would be appreciated.

DELL-Chris H · Answer

Yukonka,

Unfortunatly there isn't a lot we can do to help, as we don't have enough details to definitively state the issue. As well, due to the age and that the system is out of warranty, we can't analyze it either. Here are a few suggestions you can look at.

Check RAID Configuration: Ensure that the RAID configuration is intact and there are no failed disks. Use the show member command to check the status of each disk

Verify Network Connectivity: Sometimes, network issues can cause volumes to go offline. Make sure all network connections are stable and there are no interruptions

Review System Logs: Check the system logs for any errors or warnings that might give you more insight into why the volume is not coming online

Reboot the Array: As a last resort, try rebooting the storage array. This can sometimes resolve issues that are not fixed by other methods

Let me know if this helps.

Yukonka · Answer

Hi there thank you for the fast response. Right now I am restoring most of the vms that were on that DataStore, but I would like to some how force this volume back online to see if i can get 1 VM that was not caught in backups.

EQLHQ> volume show VOLUME
_____________________________ Volume Information ______________________________
Name: VOLUME Size: 1.3TB
VolReserve: 1.3TB VolReserveInUse: 515.38GB
ReplReserveInUse: 0MB iSCSI Alias: VOLUME
iSCSI Name: ActualMembers: 2
iqn.2001-05.com.equallogic:0-fe83b6- Snap-Warn: 100%
20968d5d9-21cbc3cb1a364291-Volme Snap-Depletion: delete-oldest
Description:
Snap-Reserve: 0% Snap-Reserve-Avail: 0% (0MB)
Permission: read-write DesiredStatus: online
Status: offline-missing-pages Connections: 0
Snapshots: 0 Bind:
Type: not-replicated ReplicationReserveSpace: 0MB
Replicas: 0 ReplicationPartner:
Pool: SSD Transmitted-Data: 22.96TB
Received-Data: 27.95TB Pref-Raid-Policy: none
Pref-Raid-Policy-Status: none Thin-Provision: disabled
Thin-Min-Reserve: 0% (0MB) Thin-Growth-Warn: 0% (0MB)
Thin-Growth-Max: 0% (0MB) ReplicationTxData: 0MB
MultiHostAccess: enabled iSNS-Discovery: disabled
Replica-Volume-Reserve: 0MB Thin-Clone: N
Template: N NAS Container: N
Administrator: SyncReplStatus:
SyncReplTxData: 0MB Thin-Warn-Mode: offline
Snap-space Borrowing: enabled Space Borrowed: 0MB
Folder: SectorSize: 512
ExpandedSnapDataSize: 0MB CompressedSnapDataSize: 0MB
CompressionSavings: 0MB

the status "Status: offline-missing-pages " Is what i need to some how clear off this volume. I am not concerned at this point about data loss as any data is better than no data.

EqualLogic

Dell equallogis PS4100e (Missing Pages)

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