Disk errors in SD-WAN edges
Article ID: 381027
Updated On:
Products
Issue/Introduction
This article shows how to identify disk errors in SD-WAN edges and how to request a hardware replacement.
Environment
VMware SD-WAN
VMware SD-WAN by VeloCloud
Resolution
You can identify disk hardware issues in SD-WAN edges by checking the logs and console messages errors:
These are some examples:
- Console errors:
[507316.780223] EXT4-fs: 303954 callbacks suppressed[507316.780225] EXT4-fs (sda5): previous I/O error to superblock detected[507316.791489] EXT4-fs (sda5): I/O error while writing superblock[507316.791490] EXT4-fs (sda5): I/O error while writing superblock[507316.791500] EXT4-fs (sda5): I/O error while writing superblock[507316.791543] EXT4-fs (sda5): previous I/O error to superblock detected[507316.791549] EXT4-fs (sda5): I/O error while writing superblock[507316.791604] EXT4-fs (sda5): I/O error while writing superblock[507316.791622] EXT4-fs (sda5): I/O error while writing superblock[507316.791641] EXT4-fs (sda5): I/O error while writing superblock[507316.791655] EXT4-fs (sda5): I/O error while writing superblock[507317.297948] EXT4-fs error (device sda7): __ext4_find_entry:1585: inode #2: comm vc_procmon: reading directory lblock 0[507317.308783] EXT4-fs (sda7): I/O error while writing superblock[507320.962202] scsi_io_completion_action: 1127010 callbacks suppressed[507320.999251] print_req_error: 1423784 callbacks suppressed[507320.999253] blk_update_request: I/O error, dev sda, sector 4242688 op 0x0:(READ) flags 0x80700 phys_seg 2 prio class 0[507320.999263] blk_update_request: I/O error, dev sda, sector 4274888 op 0x0:(READ) flags 0x3000 phys_seg 1 prio class 0[507320.999286] blk_update_request: I/O error, dev sda, sector 4242432 op 0x0:(READ) flags 0x80700 phys_seg 31 prio class 0[507320.999290] blk_update_request: I/O error, dev sda, sector 4242680 op 0x0:(READ) flags 0x3000 phys_seg 1 prio class 0
2. VCO events errors:
Look for: "EDGE_DISK_IO_ERROR" or "Remounting filesystem read-only":
| Event | User | Segment | Edge | Severity | Time | Message |
| EDGE_DISK_IO_ERROR | EDGE1 | Warning | Aug 29, 2024, 10:32:17 AM | kernel:[ 1196.490094] blk_update_request: I/0 error, dev sda, sector 15557120 op Ox1:(WRITE) flags OxO phys_seg 2 prio class O | ||
| EDGE_DISK_READONLY | EDGE1 | Critical | Aug 20, 2024, 12:17:44 PM | kernel:[615467.550536] EXT4-fs (sda6): Remounting filesystem read-only | ||
| EDGE_DISK_READONLY | EDGE1 | Critical | Aug 20, 2024, 12:17:44 PM | kernel:[615467.539156] EXT4-fs (sda6): Remounting filesystem read-only | ||
| EDGE_DISK_IO_ERROR | EDGE1 | Warning | Aug 20, 2024, 12:17:41 PM | kernel:[615464.400825] blk_update_request: I/0 error, dev sda, sector 14863472 op Ox1:(WRITE) flags 0x4000 phys_seg 21 prio class O | ||
| EDGE_DISK_IO_ERROR | EDGE1 | Warning | Aug 20, 2024, 8:20:30 AM | kernel:[601233.132565] blk_update_request: I/0 error, dev sda, sector 14790344 op Ox1:(WRITE) flags 0x4000 phys_seg 21 prio class O |
If an edge presents any of those errors, this means there's a hardware disk issue and a replacement should be sent.
Please proceed to raise an RMA request with the support team and provide:
VCO URL and customer name
Model of device
Serial number of failed device
Onsite contact details:
Full name
Email
Phone number
Shipping address:
Company name
Street address
Suite/office number (if any)
City
State
Postal Code
Country
Additional Information
For a list of different known issues with SD-WAN edges please consult:
Hardware troubleshooting guides for VMware SD-WAN
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