On Oct 7, 2014, at 9:33 PM, Marc Eshel <eshel@xxxxxxxxxx> wrote:
> I see that NFS4_PNFS_MAX_STRIPE_CNT is 4096 but when give the client a cnt
> that is bigger than 1024 it fails, is that the limitation of kcalloc() ?
>
> 366341.304362] <-- _nfs4_proc_getdeviceinfo status=0
> [366341.304364] filelayout_get_device_info getdevice info returns 0
> [366341.304368] decode_device stripe count 1512
> [366341.304370] decode_device ERROR: returning NULL
> [366341.304372] NFS: decode_and_add_device: Could not decode or add device
> [366341.304428] <-- filelayout_get_device_info dsaddr (null)
> [366341.304430] --> filelayout_check_layout returns -22
> [366341.304433] pnfs_layout_process: Could not allocate layout: error -12
>
> decode_device()
>
> ...
> dprintk("%s stripe count %d\n", __func__, cnt);
> if (cnt > NFS4_PNFS_MAX_STRIPE_CNT) {
> printk(KERN_WARNING "NFS: %s: stripe count %d greater than
> "
> "supported maximum %d\n", __func__,
> cnt, NFS4_PNFS_MAX_STRIPE_CNT);
> goto out_err_free_scratch;
> }
>
> /* read stripe indices */
> stripe_indices = kcalloc(cnt, sizeof(u8), gfp_flags);
> if (!stripe_indices)
> goto out_err_free_scratch;
>
>
> Thanks, Marc.
Hi Marc,
You are asking for 1512 bytes of memory. That would be looking for a 2k slab.
What flags are being passed down in gfp_flags?
Are you experiencing any other memory issues?
Tom
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