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Groups > linux.kernel > #1557552
| From | Christoph Hellwig <hch@lst.de> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [Regression] fstrim hangs on Hyper-V: caused by "block: improve handling of the magic discard payload" |
| Date | 2017-01-12 17:00 +0100 |
| Message-ID | <sYPXc-5KY-13@gated-at.bofh.it> (permalink) |
| References | <sYLgS-2XE-5@gated-at.bofh.it> <sYNVn-4Au-5@gated-at.bofh.it> <sYPDR-5Es-47@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Can you check if this debug printk triggers for the discard commands?
---
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 888e16e..7ab7d08 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1031,6 +1031,10 @@ static void storvsc_command_completion(struct storvsc_cmd_request *cmd_request,
data_transfer_length = 0;
}
+ if (cmd_request->payload->range.len != data_transfer_length)
+ printk_ratelimited("request len: %u, transfer len: %u\n",
+ cmd_request->payload->range.len,
+ data_transfer_length);
scsi_set_resid(scmnd,
cmd_request->payload->range.len - data_transfer_length);
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[Regression] fstrim hangs on Hyper-V: caused by "block: improve handling of the magic discard payload" Dexuan Cui <decui@microsoft.com> - 2017-01-12 12:00 +0100
Re: [Regression] fstrim hangs on Hyper-V: caused by "block: improve handling of the magic discard payload" Christoph Hellwig <hch@lst.de> - 2017-01-12 14:50 +0100
RE: [Regression] fstrim hangs on Hyper-V: caused by "block: improve handling of the magic discard payload" Dexuan Cui <decui@microsoft.com> - 2017-01-12 16:40 +0100
Re: [Regression] fstrim hangs on Hyper-V: caused by "block: improve handling of the magic discard payload" Christoph Hellwig <hch@lst.de> - 2017-01-12 17:00 +0100
RE: [Regression] fstrim hangs on Hyper-V: caused by "block: improve handling of the magic discard payload" Dexuan Cui <decui@microsoft.com> - 2017-01-12 17:40 +0100
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